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Summary

Canada's new summer forecast says these parts of the country will get 'extreme heat'

Heat waves, thunderstorms, and more!

river in calgary with towers in the background. right: person crossing a street in toronto as it rains

River in Calgary. Right: Person crossing a rainy Toronto street.

Senior Writer

Get ready because Canada's weather is going to be warmer than normal soon!

A new summer forecast revealed which parts of the country are in for "extreme heat," thunderstorms, torrential downpours, and humid temperatures.

The Weather Network just put out the 2025 summer forecast with details about what the season will be like after Canada's "long winter" and "sporadic spring."

It's expected that most of Canada will get warmer-than-normal temperatures during June, July, and August.

That includes all of Alberta, Saskatchewan, Manitoba, Ontario, Quebec, New Brunswick, P.E.I. and Nova Scotia, along with parts of B.C. and Newfoundland and Labrador.

Also, temperatures could be "much warmer than normal" from the Rockies to northwestern Ontario, especially in July and August.

Those places are at risk of extended heat waves and even a few days of "extreme heat," according to The Weather Network.

It's expected that the heat could occasionally push into B.C., but it won't be persistent.

From the Great Lakes in Ontario to the Maritime provinces, The Weather Network has forecast "a warm and humid summer."

Some heat waves are possible in those areas, but persistent extreme heat isn't likely.

Daytime temperatures should be near normal or slightly above normal, with nighttime temperatures warmer than normal because of muggy conditions.

According to The Weather Network, a heat dome is expected over the central U.S. in July and August that could lead to drought conditions in Canada, especially across the southern Prairies.

Places north of the drought are expected to get frequent thunderstorms, including severe storms with torrential rain.

Despite the rain from these storms, it's not likely that it will be enough to reduce the threat of wildfires this summer.

The Weather Network said there is also a risk of wildfires across most of B.C. and northwestern Ontario.

Eastern parts of Canada could be dry at times this summer, but widespread and prolonged drought isn't expected.

It's forecast that southern Ontario, southern Quebec, New Brunswick, P.E.I. and parts of Nova Scotia will have above normal rainfall during the season.

That includes more frequent showers and thunderstorms, with a risk of torrential downpours from strong and severe storms.

So, if you've been hoping for warmer weather this summer, you're going to get it no matter where you are in Canada!

But you'll need an umbrella or a raincoat if you're in the eastern parts of the country.

Explore this list   👀

    • Senior Writer

      Lisa Belmonte (she/her) is a Senior Writer with Narcity Media. After graduating with a Bachelor of Journalism from Toronto Metropolitan University (formerly Ryerson University), she joined the Narcity team. Lisa covers news and notices from across the country from a Canada-wide perspective. Her early coverage of the COVID-19 pandemic earned Narcity its first-ever national journalism award nomination.

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