A blast of autumn weather is about to change up the start of the week in the Prairies and Ontario, 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.

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[Prairies, Manitoba, Thunderstorm, West, September 1, 2025, (The Weather Network/Nicole Karkic)] Prairies, Manitoba, Thunderstorm, West, September 1, 2025, (The Weather Network/Nicole Karkic)

STORM RISK SPREADS EAST

Southern Manitoba, including Winnipeg, is in a severe weather hotspot, with gusty winds, hail and frequent lightning all possible.

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