Published on Sep. 1, 2025, 3:30 PM
A cold front is sweeping across the Prairies Monday and could trigger severe thunderstorms for parts of the region and northwestern Ontario
A blast of autumn weather is about to change up the start of the week on the Prairies, bringing a mix of severe thunderstorms and a dramatic drop in temperature.
The clash of warm, late-summer air with an approaching cold front is anticipated to fuel stormy skies Monday, with conditions heading east into Tuesday.
CHECK OUT: Why do leaves change colour in the fall?
Storm risk spreads east
Southern Manitoba, including Winnipeg, is in a severe weather hot spot, with gusty winds, hail and frequent lightning all possible.
Northern Ontario, in particular around Red Lake, may also experience stronger storms by Monday night.
Farther west, isolated thunderstorms remain possible in Alberta and B.C., particularly around the foothills and interior regions. While Calgary is less likely to be affected, forecasters say storm chances are improving to the west.
From summer heat to sweater weather
DON’T MISS: Five pro tips to help you prep the garden for fall
As the storms pass, cooler air will settle in behind them. Winnipeg will drop from 28ºC on Monday to 19ºC on Tuesday, while Regina will fall from 30ºC to 20ºC.
