Thunderstorms & cooler weather for Montreal to start the week - Texas flooding

Horrific flash flooding has claimed over 80 lives in the Texas Hill Country northwest of San Antonio. Several months worth of rain fell in just a few hours Friday morning catching both holiday weekend campers and residents off guard. (Photo: Carter Johnson)

It was a tragic weather weekend in parts of Texas and the Carolinas as significant flash flooding claimed dozens of lives. The event shows just how quickly weather can turn violent, severe or even deadly. Despite the fact that weather warnings or watches often turn up empty, they cannot be ignored. Each situation is unique from the other.

On Sunday in Montreal, severe thunderstorm watches and warnings were posted for cells that turned out to be less than impressive. That happens. Summer storms form and dissipate very quickly, often in less-than an hour. While Sunday's storms were not to bad on the island of Montreal, some parts of the province did have very heavy rain, hail, power outages and wind damage.

Here in Montreal, only a few millimetres of rain fell after a steamy day. The high was 33.2C (92F), just shy of the 2010 record high of 33.6C (93F). The day was unsettled to say the least, warm and humid, a trend that is becoming all too familiar this summer across large parts of North America.

On Monday, a cold front will sag south across the St. Lawrence Valley, with significantly cooler air, along with showers and thunderstorms. Some of the storms may produce heavy rainfall. The high today will be much cooler than Sunday, reaching only 22C (72F), with brisk northeast winds. Sunshine returns Tuesday, with the high warming back up to 26C (79F). The balance of the week will remain highly variable, with temperature and humidity levels creeping back up, and a few isolated showers or thunderstorms at times.

Texas Flood Disaster

The Texas Hill Country northwest of San Antonio and specifically the Guadalupe River Valley was the scene of horrific flash flooding in the pre-dawn hours Friday morning. Several months worth of rain, between 250 and 500mm (10-20 inches) fell in just a few hours during the overnight hours. While weather warnings and updates were numerous by the National Weather Service, most residents were sleeping and caught by surprise. 

A rapidly moving wall of water swept down the Guadalupe River through Kerr County, turning the lazy river into a torrent in less than an hour. The river went from a few feet to major flood stage at over 29 feet. Flood stage is 22 feet. Residents and campers were swept away as homes and trailers were demolished. The death toll is terrible, currently at 82, including 28 children. Many of the victims were from Camp Mystic, an all girls camp on the edge of the Guadalupe. Rescuers continue to search for survivors but hope is diminishing. Resources have been pouring into the region from across Texas and the US.

The flooding occurred as an area of slow-moving thunderstorms tapped into deep Gulf of Mexico moisture producing torrential rain over the central portion of the state. Flooding in ongoing Monday morning in Texas.

Flooding is also occurring in North Carolina, as the remains of Tropical Storm Chantal move inland after making landfall along the South Carolina coast Sunday.

Thunderstorms and muggy weather persist over southern Quebec and Ontario

Mother Nature put on a show in Laval and across the Montreal region on Canada Day, with regional fireworks displays sharing the sky with rainbows and lightning. (Photo T. Tsoukatos)

Severe Thunderstorm Watch for eastern Ontario and southern Quebec through Thursday evening.

Some storms have fired up in the muggy airmass located across southern Quebec on Thursday, but the bulk of the severe weather so far has been across northern New England. Partly cloudy skies will make the atmosphere unstable again Thursday afternoon across the region. The main threat would be gusty winds and heavy rain along with dangerous lightning.

Warm and humid air has prevailed across southern Quebec since the June 24 holiday. Temperatures have been warm, combined with elevated humidity at times. The result has been numerous showers and thunderstorms scattered across portions of Ontario and Quebec, typical summer weather.

Canada Day was extremely muggy across the region, with strong thunderstorms developing during the late afternoon and evening hours. The same was true on Wednesday evening, with thousands of lightning strikes reported between Ile Perrot and the Ontario border during the evening hours. There were reports of several homes being struck by lightning as well as power outages. Small hail was also observed.

More unsettled weather is occurring on Thursday, as a cold front slides across the region. Any thunderstorms will prevail into the early evening hours before dissipating near sunset. As winds turn out of the west, some smoke and haze may drift into southern Quebec from the western Canadian wildfires. Most of the smoke should remain in the upper atmosphere, resulting in hazy conditions.

Friday through the upcoming weekend and into Monday will feature more warm and humid weather. Friday and Saturday look dry, with highs around 27C (81F). Both temperatures and the humidity will be on the rise Sunday and Monday, closing back in on 30C (86F), with an increase risk of showers and thunderstorms from late Sunday into Monday as a frontal boundary sags southward into New York and New England.

Temperatures may cool briefly in Montreal on Monday under clouds and showers, but quickly warm back up again by Tuesday.

Unsettled weather expected for Canada Day in Montreal

Happy Canada Day!
Saturday turned out to be a decent day across Eastern Ontario and Southern Quebec. Montreal managed to slip into the warm sector in the afternoon, with clearing skies and quickly warming temperatures into the upper 20s. We have a warm, muggy and at time thundery week ahead. (Valley Weather Photo)

The heavy rain expected over the weekend managed to fall mainly north of the Montreal region, leaving us in the warm sector of the system on Saturday afternoon. The result was a muggy high of 28C (83F) and a rather pleasant afternoon after the morning thundery rains. In terms of rainfall, between 15 and 20mm fell across the city, bringing the monthly total for June up to 40mm, which is still well-below the long-term average of 83.6mm.

We will end the month of June with plenty of sunshine and very warm temperatures, into the low 30s for many on Monday. The warm and humid air will remain through the evening and into the Canada Day holiday, with lows of only 21C (70F) forecast for Montreal. An advancing frontal boundary will set the stage for more widespread showers and thunderstorms from late this evening into Tuesday. Mother Natures fireworks!

Temperatures will remain warm along with muggy conditions Tuesday, with highs reaching 26C (79F). The balance of the week will be rather unsettled, with temperatures at or slightly above normal for early July, along with the risk of afternoon showers or thunderstorms. Humidity levels will remain moderate, so while conditions will feel muggy, it will not be oppressive like last week. In other words, typical July weather for Montreal. The warm and muggy air will persist into next weekend, with a renewed threat of thunderstorms arriving by Sunday.

Enjoy the Canada Day Holiday!

Heavy rain possible to start the long weekend in Montreal

Heavy rain may produce areas of flash flooding across southern Quebec late Friday into Saturday. 50mm of rain or more is possible for some locations. Weather warnings may be required.

After the searing heat and humidity of this past week, conditions have turned much cooler on this Thursday in Montreal. On Tuesday, Montreal recorded its warmest June day since weather records began at Trudeau Airport, reaching 35.2C (95.4F). This surpassed the previous monthly high of 35.0C (95F) set back on June 9, 1980.

A series of weak disturbances have introduced cloud cover and a few showers Thursday, keeping temperatures much cooler. The forecast high for Montreal is 23C (73F).

Our attention will turn to a significant surge of moisture arriving ahead of the same warm and humid air mass that was present earlier this week. The heat dome will push a warm front north, approaching southern Quebec late in the day Friday.

Currently, forecasters expect a swath of very heavy rain and thunderstorms to set up just north of that front. Copious amounts of rain are forecast, with 25mm to as much as 100mm (1 to 4 inches) possible for some locations. Heavy rain and/or flood watches and warnings may be needed fro some regions as the event draws closer. Stay tuned if you have any weekend outdoor plans.

 The heaviest rain would fall from late Friday into Saturday for southern Quebec.

What is not clear at the moment is where that swath of rain will be. Models have it anywhere from central New York to right over the Montreal region. Where the most persistent heavy rain does occur, flooding will be a real possibility.

The clouds and rain will keep temperatures around the 20C (68F) mark into Sunday. Once the rain ends, a warm and humid air mass will remain into Canada Day, with highs approaching 30C (86F) once again. More unsettled weather in the form of showers and thunderstorms is possible next week.

Heat Warning - Hot and humid weather forecast through Wednesday for Montreal

By the water in Montreal will likely be the best place to be this week, as temperatures soar well into the 30s, combined with high humidity. Widespread heat warnings are in effect across our entire region.

Heat Warning in effect for Montreal and Ottawa.

An area of showers and strong thunderstorms swept across portions of southern Ontario and Quebec overnight. This was the same system that produced deadly tornadoes over parts of the upper Midwest and northern plains on Friday. The worst of the weather passed to the west of Montreal and into upstate New York overnight. Montreal managed a few millimetres of much needed rainfall, along with plenty of thunder and lightning.

This now sets the stage for our first heatwave of the season, that will likely see high temperatures pushing into the middle 30s for many locations, and combined with elevated humidity levels, will push humidex (real feel) temperatures well over 40C (104F).

An expanding heat dome will produce dangerous heat form the central and southern plains, across the Great Lakes and into Quebec and Ontario. The heat will be dangerous. Highs in Montreal will be close to 30C (86F) Sunday and Wednesday, while Monday and Tuesday will likely be the hottest, with highs of 32C to 35C (90-95F). Overnight lows will provide very little relief, remaining in the middle 20s, perhaps above 27C (80F) in downtown Montreal.

Widespread heat warnings and advisories are posted for the eastern two thirds of North America. Take precautions and avoid strenuous outdoor activity during the most intense heat of the day. Stay hydrated, remain in air conditioned spaces if you can. Check on the elderly and the very young, keep your pets indoors, Remember to be extra careful with pets and children in automobiles, which can become unbearably hot in minutes.

Relief will arrive in the form of a cold front late Wednesday, with showers and thunderstorms and cooler weather by Thursday.

Meanwhile summer snow fell across the higher elevations of the Rockies in Western Canada on Saturday, including Elkford, BC shown above. A strong low pressure area produced heavy rain and mountain snow, along with strong winds across much of southern B.C and Alberta. My childhood friend Betty posted theses images on Facebook. (Elizabeth Jones)

Meanwhile while we swelter in the east, a strong storm produced heavy rain and mountain snow in British Columbia and Alberta. Gusty winds and cold temperatures produced several centimetres of snow across the the highest elevations of the Rockies in southeastern B.C. 

Strong thunderstorms possible Thursday - heatwave next week

Strong thunderstorms producing heavy rainfall are possible Thursday afternoon across southern Quebec. Flash flooding will be possible with the strongest storms. (Valley Weather Photo)

Strong thunderstorms possible Thursday afternoon. 

Summer arrives at 10:42PM on Friday, and along with that will be the warmest air of the year to date. First off we have an active weather day across eastern Ontario and southern Quebec. The region has been blanketed by a sultry air mass, with a warm high of 30C (86F) on Wednesday and overnight lows remaining in the low 20s (70F). Along with elevated humidity levels, temperatures felt more like 35C (95F) Wednesday afternoon.

On Thursday, strong low pressure over northern Ontario, will move into central Quebec. Heavy rain will fall north of Montreal, with warnings already posted. A warm front has lifted north of of the city on Thursday morning, setting the stage for strong afternoon thunderstorms. Depending on how much clearing we receive, the storms could be severe locally.

The biggest threat for severe weather Thursday, including strong winds and hail, will be southeast of metro Montreal. (ECCC)

Most of the severe weather should occur south and east of Montreal. The main threat for the city west to the Ontario border, will be torrential rainfall, with the possibility of up to 50mm locally. That amount of rain over a short period of time could produce some flash flooding. Pay attention today to the latest forecast and any potential weather warnings.

After several flash flood events last summer in Montreal, we know which areas are prone to flooding. Try to avoid parking there today. Isolated showers will persist into Friday morning, before skies clear, with slightly cooler, less-humid air.

Over the weekend, the heat and humidity will begin to build back in, with more showers and thunderstorms late saturday and Sunday. Temperatures will start out in the mid 20s Friday, rising into the middle 30s by Tuesday. Dangerous heat, with humidex levels approaching 40C (104F) are possible in metro areas across southern Quebec, Monday and Tuesday.

Heat and humidity increase this week across southern Quebec

The weather was perfect all weekend for the Canadian Grand Prix at Circuit Gilles Villeneuve.

Light winds, low humidity and ideal temperatures greeted race fans in Montreal. More importantly after rain created significant problems for organizers,  fans and drivers in 2024, the weather remained dry for the entire 2025 three-day event. (F1.com photo)

High pressure anchored over southern Quebec managed to keep the clouds and rain to our south over New England and New York all weekend long.

As we move towards the summer solstice this coming Friday, the heat and humidity will start to build this week. The weather looks rather unsettled for the upcoming week, but not a washout by any means. June has been rather dry when compared to the rest of the spring in Montreal, so we could use some rainfall. To date, only 12mm of rain has fallen at Trudeau Airport in June.

The weekend was spectacular, with ideal conditions for the Canadian Grand Prix or any other outdoor activities. So as we start a new week, high pressure will give us one more ideal day, with sunshine and very warm temperatures. The high in Montreal will be near 28C (83F). 

Clouds and humidity will begin increasing tonight into Tuesday, along with higher dew points, making the airmass feel quite muggy. These conditions will prevail for most of the work week. We may see some isolated showers on Tuesday, with the chances for precipitation and even thunderstorms increasing into Thursday. Temperatures will remain warm, around 27C (80F) for highs and remaining warm overnight, in the upper teens to near 20C (68F). Slightly cooler air may arrive by next Friday or Saturday, but it will be short-lived as the heat will increase again by the Fête Saint-Jean here in Québec.

Montreal may have a rain-free weekend for the Canadian Grand Prix

A quick moving thunderstorm dumped torrential rain on Montreal on Tuesday afternoon. Thankfully the storm only lasted a few minutes, with 10mm falling at Trudeau Airport. (Valley Weather)

After a dismal spring that has had rain on just about every weekend, we may be looking at a break, just in time for the Formula F-1 Canadian Grand Prix in Montreal.

Weak high pressure is moving across southern Quebec on Wednesday, to be followed by a quick moving cold front this evening. That front will generate gusty southwest winds in the St. Lawrence Valley, possibly exceeding 50km/h through the overnight hours. There may be a spot shower or two, but no much precipitation is expected.

High pressure builds back in for Thursday and Friday, with brilliant sunshine and cooler, less-humid conditions. The high Wednesday will be close to 27C (81F0, dropping into the low 20s through the weekend. In terms of precipitation, dry weather is expected through late Friday. In the pre-dawn hours of Saturday, a warm front will lift north across New England. A few showers or isolated thunderstorms are likely along it. The question will be how far north will it move before heading back south.

The thinking at this time is that any showers will remain south of Montreal. Sunday at the moment looks ideal for the race, light winds, low humidity, sunshine, and a high of 24C (76F). The hope is that the venue will avoid the major problems they had last year, when over 30mm of rain fell over the course of the event, causing significant water accumulation on Ile Notre Dame.

Environment Canada is predicting a very hot and humid summer for Montreal and southern Quebec. Hot and dry weather expected across the Prairies, may exasperate the western wildfire situation, leading to more hazy and smokey days as well for our region. (ECCC)

HOT SUMMER ON TAP

Environment and Climate Change Canada has released the national forecast for summer 2025. It is simple, above normal temperatures for nearly all of us from June through August and likely persisting into the fall. Here in Montreal, we are expecting a hot and humid summer, with frequent thunderstorm activity. Northing new to see here, as this is quickly becoming the norm for southwestern Quebec of late.

One final note, Tuesday's quick moving thunderstorms dropped around 10mm on Montreal, brining the monthly total to 11.6mm. The same storms produced a small tornado in upstate New York, near Beekmantown, just north of Plattsburgh. The late afternoon EF-0 storm with winds of up to 120km/h, produced only minor damage. 

Air quality slowly improving in southern Quebec

Smoke from wildfires burning across northern Saskatchewan and Manitoba, produced some of the worst air quality on the planet in Montreal on both Friday and Saturday. Conditions began to improve on Sunday, and that trend should continue early in the week, with southwest winds and showers expected to"scrub" the air.

On Friday, southern Quebec and Ontario had some of the worst air quality among major cities on the planet. The hazy, smokey skies were created by high altitude smoke from the western Canadian wildfire, being driven closer to the surface on north winds. The result was a thick haze filtering out the sun and making it difficult on the eyes and respiratory systems. Air quality advisories were in effect for all our regions from Friday into Sunday morning before being lifted.

By no means is the air perfect Monday morning, with readings in Toronto and Montreal just under the unhealthy level on the air quality index at 94 and 93 respectively. That ranks the two cities 14th and 15th in the world Monday morning. Conditions should further improve late Monday as a warm front lifts north into the St. Lawrence Valley, accompanied by showers and southwest winds.

On Tuesday a cold front will generate showers and thunderstorms, with up to 10mm of rain possible. We need the moisture. To date, Montreal has only received 1.2mm of rain in June. The dry conditions have increased the risk of wildfires in the province, with SOPFEU reporting our region as extreme for fire risk. Outdoor burning should not be done under any circumstance in southwestern Quebec, until we receive some moisture. Conditions are expected to improve this week with the forecasted rainfall.

Temperatures this week will be seasonable, with daytime highs in the low to mid 20s and overnight lows in the middle teens. Unsettled weather, with showers and thunderstorms are likely from Monday afternoon into late Tuesday. By mid week, high pressure is expected to build into southern Quebec with plenty of sunshine to end the work week.

Western wildfire smoke drifts into southern Quebec

Filtered sunshine in Montreal due to western Canadian wildfire smoke has resulted in air quality advisories for southern Quebec. (Valley Weather)

A special air quality statement has been issued by Environment Canada regarding the western Canadian wildfire smoke that has drifted into eastern Ontario and southern Quebec on Friday morning. The smoke was present at higher altitudes earlier in the week, but has worked its way down to the surface currently, creating moderately poor air quality. 

Visibility is under 5km in Montreal at 8am, with widespread smoke and haze. There is definitely a smell of fire in the air Friday morning. The smoke and haze should remain through most of the day on light north and northeast winds, as the Montreal region lies to the north of a warm front over southern New England. The day will be hazy and warm, with a high of 25C (77F).

Environment Canada is advising residents to limit or reschedule outdoor activities until the air quality improves. 

Overnight, humidity levels will be on the rise as the warm front nears our region. Overnight lows will be very mild in the upper teens. On Saturday, we can expect another warm, and humid day, with haze and perhaps an isolated afternoon shower or thunderstorm, with a high of 27C (80F).

High pressure will nudge into the region on Sunday, with clearing skies and a warm high of 24C (76F). It should be one of the best weekend weather days we have had so far this year.

Over 60 Quebec firefighters and support staff left earlier this week to help the province of Manitoba battle widespread wildfires. The smoke form those fires arrived in southern Quebec Friday morning. (SOPFEU Photo)

The fires in Manitoba have forced the evacuations of thousands of residents form the central and northern part of that province, including the community of Flin Flon. There have been 111 fires in Manitoba so far in 2025, above the long-term average of 89. Thousands of hectares have burned, along with many structures. sadly there have been to fatalities.

Help as arrived from other Canadian provinces and the US, including 60 firefighters and personal from Quebec. A state of emergency is also in effect in Saskatchewan. The spring has been dry and warm in many locations, and while some rain and cooler temperatures are possible in the short-term, forecasters are expecting a hot dry summer for a large part of western Canada.

Summer weather finally returning to southern Quebec

That was one miserable weather weekend in Montreal, with a cold rain, gusty northwest winds and high temperatures in the low teens. Thankfully high pressure will build into southern Quebec for the upcoming week, with clearing skies and rapidly warming temperatures. By Wednesday, we may see our first 32C (90F) high temperature of the year in Montreal.

After an unseasonable cold and windy weekend, summer will quickly return this week to Montreal. Sunday was downright cold. The high in Montreal was only 13.1C (55F), well-below the normal high of 22C (72F), and just 0.8 degrees warmer than the all-time record low maximum for the date of 12.2C (54F) set back in 2003. Add in a gusty northwest wind, at times close to 60km/h and occasional showers and the day was just miserable, often feeling like the middle single digits.

Nobody could blame you for thinking that spring is getting off to a poor start. The data backs it up. In May, rain fell on 22 of 31 days. That amounted to 118.2mm, above the long-term average of 85.6mm for Montreal. Some form of precipitation has fallen on 12 of the last 14 weekends in Montreal. dating back to March 1st. Believe it or not, the May average temperature was actually very close to normal at 19C (66F). We can thank a few mild nights for shifting of the data.

SUMMER WARMTH

Now for the good news. High pressure is building into the region Monday morning and should prevail into early Thursday. Skies are already clearing out and we can expect sunshine through midweek. The result will be dry air finally, along with rapidly warming temperatures. Monday will see a high of 20C (68F), followed by a very summery 28C (83F) for Tuesday, and hot by Wednesday, with a near-record high of 32C (90F) possible. Overnight lows will start off cool, but warm as well to a muggy 21C (70F) by Wednesday. The only glitch in the weather will be the arrival of some high altitude smoke from the western Canadian wildfires. This will reduce the air quality a touch and provide hazy sunshine by Wednesday over much of southern Quebec and Ontario.

By Thursday, humidity levels will be on the rise ahead of a cold front arriving from the northwest. Showers and thunderstorms will be possible, continuing into Friday. Unfortunately, low pressure travelling along the front may prolong those showers into Saturday once again. The hope is skies should clear out late in the day, providing us with a sunny and seasonably warm Sunday.

Another dreary Saturday on tap for Montreal

A pop-up thunderstorm moves into the Montreal burrough of Saint-Laurent on the afternoon of Monday, May 26. The storm produced torrential rain, hail and lighting. Fortunately the cell was fast moving and as a result the impacts were minimal. Monday was the 11th consecutive day with measurable precipitation at Trudeau Airport. (Valley Weather)

Wednesday may have been the nicest day in May. Widespread sunshine allowed the temperature to rise to 27.4C (81F) at Trudeau Airport in Montreal. It was a rare moment in what has become a dull and wet spring. In May to date, 111.2mm of rain has fallen, that included precipitation on 11 consecutive days up to and including this past Monday. It has rained on 19 of the 28 days so far this month.

On Monday, some decent isolated, pop up thunderstorms put down heavy rain, lots of lightning and even some small hail during the afternoon hours. All the moisture has had at least a positive impact on the fire season in southern Quebec. There are only three active fires in the province at this time. Such is not the case elsewhere in Canada where massive wildfires have resulted in evacuations across parts of Manitoba and Saskatchewan.

The trend of unsettled weekend weather across southern Quebec will continue as we head into June. A weak warm front will lift north on Thursday, introducing some humid air. Spotty showers are possible into Friday. On Saturday, another unseasonably strong Nor'Easter will move north into New England, with abundant Atlantic moisture. At this time, it appears that Montreal and the Ottawa Valley will remain on the western edge of the storm. While heavy rain is expected in Vermont and the Eastern Townships on Saturday, Montreal should only have scattered showers and gusty northeast winds. Sunday should be partly cloudy, with perhaps a shower or two and milder temperatures.

Highs from Thursday into Sunday will drop into the upper teens from Wednesday's summer warmth. Lows will be in the lower teens. Briefly looking ahead to next week, we can expect warmer, but also a more humid airmass to arrive. As a result showers and thunderstorms will remain a real possibility in the St. Lawrence Valley.

Late season nor'easter to bring gusty winds and a cold rain to Montreal

It has been a dull and dismal weather week across Sothern Quebec, with frequent rain, chilly north or northeast winds and low temperatures.

Heat and sweaters have replaced shorts and air conditioners this week across southern Quebec as unseasonable cold air remains stalled over the region along with clouds and occasional rain. 

A late season nor'easter is strengthening off the middle Atlantic coast on Thursday, set to move northeast towards Cape Cod. The storm combined with low pressure spinning over the Great Lakes, will maintain the dismal weather Montreal has been experiencing this week. All across southern Ontario and Quebec, grey skies, occasional showers and a relentless cold north wind have been making May feel more like late March.

Nor'easters are strong ocean storms that develop along the eastern seaboard, and usually bring Montreal some of our larger snowstorms. They are more common during the colder months as opposed to May.

For the near-term, we can expect three more days of showers, along with gusty northeast winds up to 50km/h. Daytime highs will struggle to reach 12C (54F) with cold overnight lows in the 5C to 7C (40 to 45F) range. The normal high should be 21C (70F). The gusty winds will make it feel even colder outdoors.

It could be worse. Closer to the storm center along the southern New England Coast and into Atlantic Canada, heavy rain will fall, with up to 75mm possible. Winds may gust over 90km/h, producing some coastal flooding. Temperatures are so cold, that some of the highest elevations of Vermont, New Hampshire and Maine into the Beauce region southeastern Quebec may see some snow accumulate during the overnight hours.

Conditions will try to improve on Sunday. We may see some clearing and slightly warmer temperatures. Unfortunately long-term trends continue to show wet weather to end the month. To date 77.4mm of rain has fallen this month. Since January 1st, some form of precipitation has fallen on just about every weekend, with the exception of two or three at best. This weekend looks no different at the moment.

Clouds, cool and wet weather to linger in Montreal

A stubborn weather pattern is resulting in dismal weather here in southern Quebec, while producing rounds of severe thunderstorms across the central United States. The damage above occurred with a strong tornado in St. Louis, Missouri on Friday. The storm resulted in significant damage and sadly the loss of 5 lives. The death toll stands at 33 from the weekend storms. (CBS)

Montreal is in the midst of a long stretch of rather dismal weather. It is a very chilly morning in the city, with 8C (48F) here in Ile Perrot. The temperature will not budge today, under persistent clouds and northerly winds, we may see 10C (50F) if we are lucky. Expect a few showers as well.

The forecast does not look good the balance of the week, with a persistent northerly flow of cool, moist air expected. Look for clouds and showers right into next weekend, along with well-below normal temperatures. Daytime highs will rage in the low to middle teens, with overnight lows from 7C to 10C (45-50F). Warm weather is expected to return to southern Quebec for the last week of May.

As far as precipitation is concerned, another 10-20mm of rain is possible by the weekend. I measured 33.2mm here on Ile Perrot since Friday afternoon. The bulk of that occurred during thunderstorms Saturday morning. May is definitely been wet, with 77mm falling as of Sunday at Trudeau Airport, with 69.2mm here on Ile Perrot. 

The culprit has been a strong upper level low slowly drifting from the central Great Lakes Friday into northern New England on Monday morning. The result has been waves of rain and much colder temperatures. In advance of the low, we managed a muggy 29C (85F) on Friday before strong thunderstorms arrived on Saturday. Those storms produced mostly heavy rain here in the Montreal region, with plenty of lightning. Other parts of southern Quebec reported hail and there was flash flooding in Sherbrooke after 50-70mm of rain fell in just a few hours.

A submitted photo to The Weather Network from a resident of Howick, Quebec, showing the potential tornado on Saturday evening. Environment Canada is investigating. (TWN)

South of Montreal near Howick, there was report of a weak tornado around 7:30pm Saturday evening, There was no damage observed, and Environment Canada is investigating to determine the strength of the storm. The strong storms also produced widespread severe weather in Vermont, with flash flooding, downed trees and large hail.

The same weather setup is delivering rounds of severe weather across the central portion of the United States. The weekend death toll stands at 33 from persistent and long lasting tornadoes across several states. The hardest hit region stretched from Missouri to Kentucky. A powerful storm killed 5 in St. Louis on Friday, while London, Kentucky was leveled on Saturday. In Kentucky, 19 deaths have been reported so far, with scores of injuries and widespread damage.

Another round of strong storms is forecast on Monday for parts of the southern plains from Colorado and Kansas into Texas and Oklahoma.

Thunderstorms - cooler weather on tap for Montreal

Day turns to night as a 3000 hectare wildfire burns out of control south of Wendigo Beach in Manitoba on Wednesday. Unseasonably hot weather has fuelled the massive wildfire near Lac Du Bonnet in the eastern part of the province. Some relief is sight as rain and much colder weather arrives late this week. (Photo: Manitoba Hydro)

The warm weather will continue in Montreal for a few more days, with a noticeable increase in humidity levels as we head into Friday. A large upper level low spinning across the northern plain states, will move across the Great Lakes and slowly into Quebec this long Victoria Day holiday weekend.

In advance of the low, a warm southerly fetch of moist air form the Gulf of Mexico will push high temperatures once again into the upper 20s across southern Quebec. On Wednesday, Quebec and New Brunswick were the warmest spots in Canada. Montreal reached 27.4C (82F), the normal high for mid May should be around 20C (68F). Other parts of the region were even warmer, close to 30C. Roberval in central Quebec reached 31C (88F). In New Brunswick, six record highs were established for the date, including 31.8C (89F) at Edmunston.

The warmer more humid air on Friday will lead to the development of widespread afternoon showers and thunderstorms, with some locations receiving as much as 25mm (1 inch) of rain. The moisture will be welcome.

The aforementioned upper level low will result in much colder weather arriving in Montreal by Sunday. After the thunderstorms and warm weather on Friday, Saturday will be a transition day, with rain and windy conditions expected. Highs in the 20s, will drop by Sunday and Monday into the middle teens along with gusty west and northwest winds.

Manitoba Wildfires

The unseasonable heatwave that has been impacting southern Manitoba and Saskatchewan has lead to significant and early start to the wildfire season. The Lac Du Bonnet fire in eastern Manitoba has reached 3000 hectares, one of 24 burning in that province. The fire has resulted in the evacuation of over 1000 residents, destruction of property and sadly two fatalities. The fire has been fuelled by days of record-breaking heat, reaching 37C (100F) at times. Dry weather and strong winds have moved the fires along quickly. Relief is in sight as much colder weather and rain are forecast over the next 48 hours. Unfortunately strong winds are expected as well, gusting up to 80km/h.

Summery weather week ahead for Montreal

Sunshine returned to Montreal on Sunday after 24mm of rain fell Friday and Saturday in the city. The warming temperatures and precipitation have finally allowed the trees to begin leafing out in southwestern Quebec. Unfortunately along with that comes pollen and seasonal allergies.

Skies are clearing Monday morning across southern Quebec, as a weak warm front lifts north of the St. Lawrence Valley. This will set the stage for a very warm week ahead, with temperatures reaching summery levels for the first time this season.

We can expect mostly dry weather through Thursday, but we can't rule out an isolated sprinkle or rumble of thunder, especially mid week. The best change should remain southwest of Montreal over upstate New York and eastern Ontario.

High temperatures will start in the lower 20s Monday, 21C (70F) here in Montreal, and gradually rise into the upper 20's (lower 80s). Overnight lows will remain very mild for early May, in the middle teens.

Unfortunately there will be some changes in the weather by the long Victoria Day weekend. Low pressure will move across the Great Lakes by Friday, with a more humid fetch of air moving northeast from the Gulf of Mexico. This will likely lead to some decent showers and thunderstorms by Friday, persisting into the weekend.

By Saturday, we can also expect some cooler air to move into Montreal on the back side of the aforementioned low pressure, as it moves into central Québec. Temperatures will lower into the upper teens for daytime highs by Sunday.

HEATWAVE

Central portions of the United States from the high plains into extreme southern Manitoba are experiencing an unprecedented early season heatwave. On Sunday, the temperature reached 37.8C (100.4F) at Emerson and Dominion City, Manitoba, shattering the previous record of 30.9C (87F) set just last year. The normal high for early May is only 20C (68F). Another indication that we are seeing some significant early season warming in Canada in recent years. This was one of 9 new temperature records established in the province. Southern Saskatchewan also reported record breaking heat. Heat warnings are in effect again Monday, with another round of mid to upper 30s forecast. Winnipeg is expecting a high of 35C (95F) on Monday.

Flood concerns on the rise across southern Quebec

Several municipalities in southwestern Quebec are monitoring area rives for potential spring flooding. At this time, only minor impacts are expected. If you live in a flood-prone area, remain vigilant. (Valley Weather Photo)

Some rivers in southwestern Quebec have reached minor flood stage, but the threat is relatively low at the time, with any flooding confined to the immediate shoreline and low-lying areas.

Several waterways in the region are being observed for minor flooding as runoff from the upper Ottawa Valley makes it's way into southwestern Quebec. They include the Ottawa, Rigaud, des Milles Iles and des Prairies Rivers.The good news is that it has been a relatively dry spring, void of any big storms. Rain is forecast Friday and Saturday, but the heaviest precipitation should remain over New England.

At this time several municipalities, including Pierrefonds, Senneville and Ile Bizard have started to prepare in the event of flooding. This includes preparing sandbags, pumps, flood gates and temporary muscle walls. The Village of Senneville has moved into Intervention 2 mode. They have made sandbags available to residents and have established a call centre.

Most computer models have the heaviest rain from this weekend's storm remaining over New England. The GFS is forecasting 18mm for Montreal by 1pm Saturday, with more over the Townships. (Ventusky)

In the province, 12 waterways are under surveillance by Sécurité Publique Québec, with 10 additional waterways in minor flood stage. They include the Ottawa and Rigaud Rivers, as well as Lac des Deux Montagnes. In the latter caae, the level is now at 23.37 metres, minor flood stage is reached at 23.30 metres. In all cases, water levels are fairly stable and well below the historic spring flooding in 2017 and 2019.

Developing low pressure Friday east of the middle Atlantic will move along the eastern seaboard into Maritimes over the weekend. A chilly rain and gusty northeast winds will develop in Montreal Friday, with 10-20mm possible by late Saturday. Much heavier accumulations, in the order of 25-50mm (1-2 inches) are likely in the Eastern Townships, with amounts reaching 75mm (3 inches) over Vermont. A flood watch is in effect in southern Vermont.

The good news for our region is that the Ottawa River basin will be on the far western edge of this storm system, with very little precipitation expected in those locations. Additionally, high pressure will build into the region starting Sunday, with warm and dry weather forecast next week through Wednesday. This will allow water levels to stabilize and even lower in most cases.

Remember, if you live in areas prone to river and spring flooding, remain vigilant and listen to what local authorities and municipalities are advising. Many municipal websites have sections dedicated to spring flooding, with information and contact numbers.

Summer warmth on the horizon for Montreal

Like a mountain range in the sky, dark clouds loom on the western horizon Wednesday morning, as an upper level low over Ontario moves into southern Québec. So far most of the chilly weather and heavy rain has remained in eastern and central Ontario. (Valley Weather Photo)

I must admit, I was wrong on the chilly weather forecast so far, as temperatures this week have over performed to this point. Montreal recorded a high of 24C (76F) on Tuesday, as skies cleared from morning rain, and the bulk of the afternoon thunderstorm activity remained to our west over Ontario. An upper level low, part of a larger omega block, has been stuck over the Great Lakes all week. Areas that have been receiving rain, have received quite a bit, in the order of 50mm. Here in Montreal, close to 15mm fell, but it was less than I expected, and temperatures have been warmer.

Radar Wednesday morning showing heavy precipitation from an upper level low spinning over parts of southern Ontario. The bulk of the rain has missed Montreal so far, with only 15.4mm falling so far this month, most of that occurring in the pre-dawn hours Tuesday morning.

As I write, the clouds are playing with the sun, in advance of the low pulling across southern Quebec and dragging a cold front along. Showers, with perhaps a rumble of thunder are likely Wednesday afternoon, before precipitation ends this evening and temperatures fall.

Thursday through Saturday will be partly to mostly cloudy, but fairly dry for southern Quebec. There is a risk of a few spotty showers and temperatures will be much cooler. Morning lows Thursday will drop into the upper single digits, with highs struggling to reach 13C (55F).

The good news is that much warmer, more summer-like weather is on the immediate horizon. High pressure will slowly drift across the region starting Sunday into next week. Highs will be in the lower 20s, Sunday but warming up to 28C (83F) for Monday and Tuesday. Some much needed sunshine is expected.

First Quebec Tornado for 2025

The Northern Tornadoes Project from Western University in London, Ontario finished their survey of damage caused by severe weather on April 29. They determined that outside of straight line winds here in the Montreal region, the first tornado of the season in Quebec occurred north of the St. Lawrence Valley at Saint-Zénon. The EF-1 tornado, capable of winds of up to 165km/h, moved along a 600 metre-wide path for 6.74 kilometres. The storm flattened trees, damaged barns and tore the roof from a home. It was the third tornado reported in Canada so far during this very young severe weather season. Thankfully there have been no injuries reported.

Unsettled, chilly weather week ahead for Montreal

A Hydro-Québec team repairs significant damage to utility lines on May 1st, after last Tuesday's thunderstorms caused widespread power outages across the Montreal region. Rumbles of thunder are possible this Tuesday and Wednesday from a cold upper level low, but outside of perhaps some small hail, no severe weather is expected at this time. (Hydro-Québec Photo)

The weather will not feel like May this week as a series of frontal boundaries and an upper level low combine to bring us a chilly damp week. Monday will be mostly cloudy, but with some breaks of sun, allowing temperatures to reach into the upper teens, perhaps 20C (68F). It will likely be the best weather day of the work week. 

Clouds thicken this afternoon and showers arrive Monday night into Tuesday, along with a few rumbles of thunder. Temperatures will remain mild through Tuesday evening, dropping to 11C (52F) and perhaps reaching 21C (70F) Tuesday. By Wednesday, and upper level low over the Great Lakes will move towards Quebec City, keeping a damp, chilly airmass in place over the St. Lawrence Valley. Temperatures will drop into the lower teens for daytime highs, along with cloud cover and occasional showers. Overnight lows will be in the single digits.

The aforementioned low will slowly drift into Atlantic Canada by the weekend, but may be replaced by another area of low pressure. While the week will not be a complete washout, the weather will certainly not feel very springlike. However as we have seen in the last week or so, it does not take much sunshine to push temperatures up quickly. We can only hope those breaks of sun will be more numerous than the forecast predicts.

Strong thunderstorms cut power to thousands of Quebec homes - injure one

Lightning strikes the ground in Saint Laurent as strong afternoon thunderstorms moved across the Montreal region. An even stronger cell along a cold front produced significant damage and power outages during the evening hours. Wednesday will be the calm after the storm, with a blustery, chilly high of 12C expected. (Valley Weather Photo)

As forecast, a series of strong thunderstorms swept across southern Quebec Tuesday afternoon and evening, producing widespread damage and power outages. It was the second set of storms for the day that occurred between 7:30pm and 9pm that did the most damage. Trees and power lines were knocked down from the central portion of the Island of Montreal north into Laval and southeast including some south shore communities. The West Island and off-island communities to the west were largely spared. 

At the height of the storm, Hydro-Quebec reported nearly 150,000 customers without power. That number is down to 88,000 as of 8am Wednesday morning. This includes nearly 12,000 clients on the island of Montreal. Hydro has over 500 teams repairing the outages, but is indicating that it could take some time to restore power, as there are over 700 induvial breaks in the grid.

The storms delivered wind gusts of 87km/h at Trudeau Airport, but well over 100km/h in other parts of the region, including Laval. Several trees fell on homes and cars, and in one case critically injured a teenager in Ahuntsic, when he became pinned under a fallen tree on Grand-Allee Boulevard.

Highway 19 in Laval at the junction of Highway 440 remains closed do to fallen power lines across the road surface.

Significant damage and minor injuries were reported at the Maisonneuve Rosemont Hospital after several windows were shattered by the wind.

The first severe weather of the season also produced damage and power outages in many locations across central and eastern Ontario into upstate New York.

Here on Ile Perrot, the storms missed my location, producing only gusty winds, lightning and around 1mm of rainfall. The weather was very warm and humid on Tuesday, reaching a high of 24.3C (76F) at Trudeau Airport, with 27.1C (80F) here on Ile Perrot. We have however gone form air conditioning to heat in Montreal over the last 12 hours or so, dropping from a high of 18C (65F) at midnight down to 1C (34F) early Wednesday morning. The cold air will remain for 24 hours, with a blustery, chilly high of 12C (54F) Wednesday in Montreal. 

Strong thunderstorms Tuesday evening knocked down trees and power lines, several onto homes and cars, including this one in Laval (Photo via Laval Neighbourhood Watch/Facebook)

Frost Advisory

A frost advisory is in effect through Thursday morning for most of southern Quebec, with morning lows close to the freezing point expected. Clouds will increase Thursday, with another round of showers and thunderstorms forecast by Friday, along with moderating temperatures. 

Moderate risk of strong thunderstorms Tuesday for parts of our region

ECCC map showing the risk level for thunderstorms today in southern and western Québec. (Double click for larger image. Courtesy ECCC)

Environment Canada has a portion of our region under a moderate risk for strong to severe thunderstorms on Tuesday. A warm front has lifted north of Montreal early Tuesday morning, with gusty southwest winds developing, brining in warm and humid air from the central portion of the US. High temperatures will push into the middle and in some cases upper 20s today. Humidex values will rise to near 30C for many. The forecast high for Montreal is 24C (76F), the warmest of the year so far.

This afternoon, a strong cold front will move southeast across Ontario and into Quebec this evening. A wide area of southern Ontario from Windsor to the Nation's Capital is under a moderate risk for severe thunderstorms, including large hail, strong winds and isolated tornadoes.

That risk area extends into western Quebec and the Outaouais. Here in southwestern Quebec we can expect thunderstorms this afternoon. The risk for severe storms here is minor, with the main threat being gusty winds, dangerous lightning and small hail.

The front should clear the region late this evening followed by gusty northwest winds up to 50km/h and rapidly falling temperatures down to 1C (34F).

Wednesday will partly sunny, windy and much colder, with a high of only 12C (52F).

Vote Today! The weather will be perfect in Quebec

Unlike many previous election days, the weather will be perfect on Monday to cast your vote in the 2025 Federal Election. Expect a sunny, warm day in Montreal, with a high close to 20C. (Elections Canada Photo)

Ideal weather in Montreal today to cast your vote in the Federal election.

Strong to severe thunderstorms possible Tuesday afternoon.

Unsettled weather week ahead.

You certainly can't blame the weather for not getting out to vote today, Monday, April 28, Election Day in Canada. We have had some miserable weather during voting days in the past, but such will not be the case today. Strong high pressure has moved into southern Quebec, producing a wide area of sunshine and warm temperatures. The ideal weather will stretch across much of eastern, southern and central Ontario to the west and east into portions of Atlantic Canada. 

In Montreal, look for sunshine, breezy conditions at times, and a warm high of 20C (68F).

A heavy wet snow fell for a few hours on Sunday morning in parts of southern Quebec, with over 10cm reported in Sherbrooke. By afternoon, the warm April sun had sent temperature quickly back into the teens at most locations. Sherbrooke remained chilly, with the fresh snow down, only reaching 5.5C (42F) for a high temperature. (MétéoMédia Image)

Over the weekend, strong low pressure moved across southern Quebec, producing a cold rain Saturday, and in some cases wet snow on Sunday morning. Just enough cold air filtered in behind the storm system to produce several centimetres of wet snow at higher elevations across the lower Laurentians and into the Eastern Townships. Sherbrooke reported and incredible 12cm of snow Sunday morning, falling in just a few hours.

Oddly, even a trace of snow fell at Trudeau Airport, with a Sunday morning low of 2C (36F). But, by the afternoon, the warm April sun had pushed temperature quickly up to 18.5C (66F) for a high in Montreal. Trudeau Airport measured 19.2mm of rain over the weekend, well under the rainfall warning threshold.

We have a very active weather week ahead for eastern Canada. A strong frontal boundary will produce showers and gusty thunderstorms on Tuesday afternoon. Strong southwest winds of up to 60km/h, will drive temperatures into the low and middle 20s on Tuesday. A strong cold front will arrive in the afternoon across Ontario and early evening here in Montreal. There is a chance for some severe thunderstorms for our region, with the main threat being strong winds. An isolated tornado over parts of eastern and central Ontario cannot be ruled out. Temperatures will fall significantly behind the front down into the low single digits by Wednesday morning.

More rain and thunderstorms are possible by late Thursday into next weekend.

Spring slowly arriving across southern Quebec

For the second year in a row, snow fell on the day I was removing my winter tires. Perhaps this was the last snow of the season last Wednesday, April 16, with 1cm reported at Trudeau Airport. Accumulations ranged from 1-3cm across most locations, confined mostly to grassy and cool surfaces. To date 7cm has fallen this April at Trudeau, with 58.2mm of rain. My feeling is that we are now done with the snow until next fall. (Valley Weather)  

The warm weather has been slow to arrive across Southern Quebec this Spring. The grass is slowly showing signs of growth and the buds are appearing on the trees finally. It has been the same across most of the country this April. On this Easter Monday, Montreal dropped below freezing, with scattered frost reported. Snow is falling across portions of northern Ontario around Thunder Bay and Lake Superior, as well as strong storm is expected to drop 10 to 20cm on parts of northwestern Newfoundland.

Here in Montreal, this morning and Sunday's chill were in stark contrast to the warm and dare I say humid conditions on Saturday. Many locations across the region had there warmest day of the year Saturday, with the official high reaching 20.5C (69F) at Trudeau Airport. Some South Shore locations, including Saint Anicet, surpassed the 21C (70F) mark. A windy cold front produced showers and thunderstorms, resulting in Sunday temperatures being as much as 15 degrees colder.

Sunshine will prevail Monday for Montreal, but another frontal boundary associated with low pressure over the Great Lakes, will lift across the St. Lawrence Valley this evening and into the overnight hours. Expect clouds to thicken quickly late Monday, followed by a few hours of rain. The rain will taper to showers early Tuesday morning, followed by clearing. Sunshine returns through Friday morning.

Temperatures will remain close to the long-term average this week, with highs in the middle teens (55F) and morning lows between 3C and 5C (39 to 41F). The work week will be mainly dry after Tuesday, with the next chance for rain and warmer weather arriving by next weekend.

Perfect Monday - but unsettled weather week ahead

High clouds from a late-season Atlantic coastal storm stream northward on Friday evening, making for a spectacular April sunset in the St. Lawrence Valley. (Valley Weather Photo)

April has always been a month of transition and extremes in southern Quebec, as the seasons battle. Ultimately spring will win  out, but it may take a couple of more weeks for that to happen this year.

High pressure will dominate the weather on Monday across southern Québec, with abundant sunshine and warm temperatures into the middle and upper teens. Enjoy today, as the balance of the week looks rather unsettled and cool.

Over the weekend, a late season coastal storm moved along the Atlantic coast, bringing snow to portions of southern and central New England. Montreal was on the extreme northern edge of the system, with clouds on Saturday, and light rain as far north as the south shore. The city remained dry. Sunday was near-perfect, with sunshine an a warm high of 15C (59F). 

April has been a rather cloudy, cool and breezy month to date. Winds have gusted over 30km/h each day, often chilly from the northeast. We have managed 484mm of rain and 6cm of snow as of Sunday. I am hopeful the snow is done for the season, but we may see a few flurries midweek.

Clouds will increase Monday night as a frontal boundary lifts into the St. Lawrence Valley. Showers are likely, and will continue into Tuesday. Temperatures will be mild for the next 24 hours. Strengthening  low pressure will lift northeast towards Quebec City by Wednesday, dragging a cold front across the region.

Look for much colder weather Wednesday and Thursday, with highs only in the single digits and lows near freezing. The front will also produce a mix of rain and snow, with any snow accumulation confined to the highest elevations, especially across the eastern Townships and Green Mountains of Vermont. In Montreal, only a few flurries or wet snow showers are possible.

By Good Friday, skies should clear for the day, along with seasonable temperatures. The good weather will not last as another system is forecast to bring rain for to begin the Easter long weekend.

Late season storm results in dozens of accidents in Montreal

Leftover ice and snow from Tuesday's storm along with cold morning lows resulted in many more accidents on Wednesday morning, including this one in Sainte-Anne-de-Bellevue. (Valley Weather)

I was one of many Montreal motorists surprised by the heavy snow and rapidly dropping temperatures that occurred during the Tuesday evening commute. A stubborn area of low pressure slowly moved along the international border, dragging down unseasonably cold air behind it, and just enough moisture for some decent afternoon snow.

The storm came in two waves. The snow early in the morning was along a cold front. That precipitation largely fell north of Montreal, with just a dusting here in the city. Meanwhile, the bulk of the moisture with the area of low pressure was across the Ottawa Valley. In Ottawa, just under 15cm of snow fell on Tuesday, accompanied by unseasonably cold temperatures and strong winds. 

As the system pulled east, it dragged any leftover moisture across the Montreal region, just in time for the afternoon commute. The snow fell heavy at times, and as temperatures dropped quickly with the loss of daytime heating, ice began to form on elevated surfaces. Gusty winds reduced visibilities in blowing snow.

Rapidly falling temperatures along with bursts of heavy snow, created ideal conditions for ice to form on elevated surfaces during the Tuesday evening commute in Montreal. The result was dozens of accidents and major delays for motorists returning home.

The result was a rash of serious accidents, including one involving at least 20 vehicles that closed the southbound lanes of Highway 13 along and just south of the bridge connecting Laval. Another rash of accidents closed both inbound and outbound lanes of the Mercier Bridge. The closure stranded motorists for hours as First Responders cleaned up the mess. Ontario Provincial Police reported over 40 collisions across their portion of eastern Ontario, including Ottawa and Cornwall.

There were dozens of other accidents reported across the region, many involving single vehicles hitting the ditch. Snowfall accumulations were highly variable, often depending on elevation. The Montreal area had 5-10cm, with 15-30cm falling from Laval north into the Laurentians.

The 6cm of snow that officially fell at Trudeau Airport Tuesday, was enough to push Montreal over the 200cm mark for the season, to 204.9cm (80.7 inches)

Overnight temperatures were very cold, dropping to -8C here on Ile Perrot, into the minus teens north and west of the city. Another round of accidents occurred on very ice roads during the morning commute. The temperature has slowly warmed above freezing Wednesday afternoon, allowing for most of the ice and snow to melt off area roads.

That may have been winters parting shot, as much milder air in now forecast beginning Thursday and persisting to the end of April. May snow, while not impossible, is very rare in Montreal!

Over 20 vehicles were involved in a serious accident on Highway 13 southbound between Laval and Montreal on Tuesday evening. The highway remained closed for several hours while First Responders cleared the scene.
Photo: Association des Pompiers de Laval

Winter's parting shot?

Grey skies and a light dusting of snow are greeting Montreal early Tuesday morning, as low pressure moves along the US border. What could be the last snow of the season today, will accumulate a few centimetres in the city, up to as much as 15cm north and west of Montreal and across parts of the Eastern Townships. (Valley Weather Photo)

Low pressure moving along the International border early Tuesday morning, is spreading a mix of wintry precipitation across southern Quebec. Roads in many cases are slick, so expect slow travel today. Strong west winds behind a cold front early this morning, are dropping temperatures and changing any mixed precipitation to snow, which will persist in various intensities throughout the day.

Light snow is falling Tuesday morning across a wide swath of our area from eastern Ontario into western Quebec and northern New England. Depending on where you are located in the region, you have a dusting up to several centimetres of fresh snow on the ground. The highest elevations of the Eastern Townships and northern Vermont could see up to 25cm of snow by Wednesday morning.

In Montreal, it took most of the overnight hours for temperatures to fall to the freezing point, and snow to begin. Most of the accumulating snow has fallen north and west of Montreal, including Ottawa. Here in Montreal, there is just a dusting on grassy surfaces as well as your car. However snowfall warnings have been issued for Ottawa and parts of eastern Ontario, with 10-15cm expected. Keep this in mind if your travels today take you along Highways 401, 416 or 417.

Drive carefully today, as temperatures are falling and will remain below freezing for the entire day. Any further precipitation will be in the form of snow, with an additional 5cm possible for most locations. Winds will be gusty, out of the northwest 40-60km/h. Our high will actually drop to -4C (25F), and fall further to a vey chilly April low of -8C (18F). On Wednesday, we can expect partly cloudy skies, with a blustery high of 1C (34F). The normal high for mid-April in Montreal should be close to 10C (50F).

Mild and wet weather returns for the weekend, as low pressure moves along the eastern seaboard.