The following forecast is for Canada. Click here to see the U.S. forecast.
Fall officially begins this week (Wednesday, September 22, at 11:09 p.m., for those of you keeping score at home). After a summer of sizzling heat throughout most of Canada (sorry, West Coast), the cool-down that accompanies autumn will be a welcome relief to some and a source of sadness for others.
The closing weeks of September should cool things down, with fair skies, but chilly temperatures. Moving into October, seasonable temperatures and precipitation are predicted, with pockets of clear, warm weather sandwiched between frequent rain showers.
Expect a cold snap, accompanied by mostly fair skies, to hit much of the country over the Thanksgiving holiday, with showers alternating with squally conditions throughout the rest of the month.
As fall deepens, November will bring wet, chilly weather, with the possibility of early snowfall for Newfoundland, Labrador, and Ontario during the opening days of the month. Once the snow starts, it will continue throughout much of the rest of the month and into December.
Elsewhere, look for fairer, more pleasant conditions through much of November, punctuated by occasional cold, blustery periods. Expect snowfall in the Rockies toward the middle of the month, with a possibility of heavy accumulation.
In the opening days of December, snow will continue to fall over much of the country. Only the lowland areas of British Columbia will see dryer, warmer weather through much of the first half of the month.
Want a more detailed forecast for your region? Be sure to check out our famous long-range forecast!