Another warm fall weekend for Montreal - changes on the way

Montreal can expect another warm weekend before much cooler air returns on Monday. (AccuWeather)

The temperature was a little closer to normal this past week in Montreal. The weather actually felt like October. This morning, I recorded 3.3C (37F) on L'Ile Perrot for the morning low. Some locations away from the city even had a light frost the last few mornings, but not here in Montreal. The average date for our first frost is October 7. However, in recent years, this has been more like October 15. It looks like a pattern change is in store over the next week or so, but not before another warm weekend in southern Quebec.

Enjoy the warm temperatures and beautiful fall foliage in Montreal this weekend. Changes are coming!

Low pressure is expected to move from Colorado, across the Great Lakes and north of Montreal on Saturday. Along the path of the storm, heavy rain is expected. Here in southern Quebec, a warm front will produce scattered showers tonight and early Saturday, before gusty southerly winds arrive and warmer temperatures. The high on Saturday will be near 20C (68F), with 22C (73F) expected Sunday. The record high for Sunday of 26.1C set in 1954, is in reach, but with expected cloud cover, it is unlikely we will get there. A cold front arrives on Sunday with showers and perhaps a thunderstorm. Much cooler air arrives for next week, with the likelihood of our first widespread frost by Tuesday morning. Morning lows will be at or just below 0C (32F) by next Tuesday.

There is plenty of cold air gathering across far northern Canada. The temperature was -22C (-8F) this morning in Mould Bay, Nunavut. It is just a matter time before pockets of this begin to impact eastern Canada. Parts of the Prairies were well below freezing this morning as well, with Regina at -10C (14F). Temperature trends in Montreal have been well above normal since the start of September. However, look for a dramatic pattern change prior to Halloween in southern Quebec. At this time, it is looking like an early start to winter during November. Now is the time to start getting ready, while the weather is good.