Windy, wet and chilly Halloween in Montreal

It is looking like a wet, dark and chilly Halloween night in Montreal, along with blustery winds up to 60km/h. We may see a break in the heavier rain for the kids to trick or treat, but I think conditions will still be wet and cold throughout the evening. Warm costumes, umbrellas and bright colours are in order, stay safe and have fun!

Happy Halloween

Heavy rainfall warning remains in effect for southern Quebec.

The weather will be damp, windy and chilly for Trick or Treating in Montreal this Halloween.

Deep low pressure moving across upstate New York along with a second storm system developing along the Atlantic coast, will produce lots of rain across southern Quebec for Halloween. Waves of moisture have brought 30 to 40mm to Montreal already since Thursday morning, with another 20 to 30mm expected Friday. 

The rain will be heavy at times, as it has been during the Friday morning commute in Montreal. Visibility is down to a few kilometres at best in heavy rain, making for slow travel, along with numerous accidents on rain slicked roads. Some minor flooding has been reported as well, especially in areas with poor drainage or leaves blocking the sewers.

As the low pressure moves to our east, the gusty northeast winds will back to the west and increase 40-70km/h at times. Temperatures will drop from our current highs near 9C (48F), down into the low single digits, around 3C (38F) tonight. The steady rain will taper to showers this evening. 

As colder air moves into the region, the rain may change to a period of snow across the higher elevations, with perhaps a flake or two in the valley locations by Saturday morning. On Saturday, expect a chilly high of 6C (43F), along with blustery northwest winds of 30-50km/h and cloudy skies. High pressure will try to clear the skies out for Municipal Election Day Sunday, but I think partly to mostly cloudy skies should prevail, along with a high of only 6C (43F).