An extended pause in Canada’s turbulent transition from summer to winter

The Weather Network’s 2025 Fall Forecast

OAKVILLE, Ontario, Sept. 10, 2025 (GLOBE NEWSWIRE) -- The transition from summer to early fall has featured a dramatic contrast in temperatures across Canada. Autumnal conditions have already made early appearances across central Canada, including record breaking cold temperatures. However, we have also seen record shattering heat, especially in western Canada. Will the upcoming fall season continue to be a season of extremes?

“Fall is typically a turbulent and changeable season as we make the transition from summer to winter,” said Doug Gillham, Senior Meteorologist with The Weather Network. “However, during the heart of the fall season, from mid September through October, we expect an extended stretch of more consistent mild weather with fewer than the typical number of fall storms for most of Canada.”

The Weather Network’s Fall Forecast predicts that warmer than normal temperatures will dominate through at least October across most of our country. This should provide periods of pleasant conditions for getting outside and enjoying Canada’s amazing fall foliage.

However, the relatively mild conditions are expected to come to an end during November with a return to a more active and changeable pattern, which is typical for late fall. This could include a rather abrupt transition into early winter for parts of Canada.

Below is a more detailed look at the conditions expected across Canada this fall:

Ontario & Quebec – After a chilly start to the season, warmer than normal temperatures are forecast to dominate during the heart of the fall season, including the second half of September and October. We also expect more sunshine and fewer than the typical number of fall storms through October. However, a more active pattern is expected to develop during November and we are closely watching the potential for a more abrupt transition into early winter.

British Columbia – Warmer than normal temperatures will dominate early in the season, but the heat will quickly fade as we progress through September and as we get deeper into the season we expect that temperatures will trend back to near seasonal. The fall storm season is forecast to arrive on schedule with a typical number of fall storms and rainy days. However, due to much warmer than normal water temperatures in the north Pacific we expect that precipitation totals will be above normal and we are concerned about the risk for excessive rain at times. At this point we expect that the ski season will be able to start close to on schedule.

The Prairies – Warmer than normal temperatures are expected to dominate through October. There will be some interruptions with shots of colder weather at times, but the heart of the fall season will feature extended periods of pleasant fall weather. However, we expect a flip in the pattern late in the season with a much colder and more active pattern developing for November. A strong start to winter is expected across the region.

Atlantic Canada – Fall is typically a tumultuous and changeable season, but this year we expect a more mild season, especially through October. Above normal temperatures are forecast to dominate with fewer than the typical number of fall storms. However, we will continue to keep a close eye on the Atlantic hurricane season as the one wild card to the season is the risk for the region to be impacted by the remnants of a tropical system. As the fall season comes to a close, we will be watching the potential for a more abrupt transition into early winter.

Northern Canada – Above normal temperatures are forecast to dominate, especially during the first half of the season, as we make the inevitable transition from summer to winter across the region. However, a more active pattern is expected to develop with near normal or above normal precipitation totals, and that will mean substantial snow and ice as we get deeper into the season.

Canadians can check daily forecasts by visiting www.theweathernetwork.com or by downloading The Weather Network App available on iOS and Android, and creating an account for personalized and up-to-the minute forecasts.

Complete fall forecast details, including regional breakdowns, maps and charts are available on our seasonal page at theweathernetwork.com/fall.

Interview opportunities: The Weather Network meteorologists are available for interviews between September 10-12 to provide additional details and localized insights about this year’s fall forecast.

To arrange an interview with a meteorologist, please contact:

Madelaine Lapointe
mediainquiry@pelmorex.com

About Pelmorex

Pelmorex is renowned for its consumer weather brands, including The Weather Network, MétéoMédia, Eltiempo (Spain), Otempo (Portugal) and Clima (for Spanish-speaking audiences). The company also owns Pelmorex Weather Source, its B2B division, which provides businesses with hyper-local weather and climate data and insights. Additionally, Pelmorex operates Canada’s National Alert Aggregation and Dissemination System, an integral part of the Alert Ready emergency alert system.

Driven by an unwavering commitment to innovation and a vibrant entrepreneurial spirit, Pelmorex has established itself as a global leader in delivering precise global weather forecasts, personalization and insights to keep communities safe and empower people and businesses to make informed, smart and confident decisions amidst the changing and volatile weather.

Through its relentless pursuit of excellence and groundbreaking advancements, Pelmorex continues to redefine the landscape of weather information services, solidifying its status as a trailblazer in the field. To learn more, visit Pelmorex.com and follow us on LinkedIn.

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/835d54d9-e399-433e-8809-6f4c5d9fc5c3

The Weather Network's 2025 Fall Forecast

The Weather Network's 2025 Fall Forecast is here. Find out what to expect from the season below.

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