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Prairie forecast: Cool east, warm west

Forecast issued September 3, covering Sept. 3 to 10, 2025

We start this period with a large upper low over northern Ontario, an area of Arctic high pressure building southwards over Manitoba and strong but narrow upper ridge of high pressure over B.C. This particular setup is going to bring cool temperatures over the eastern Prairies for the next several days. Western regions will stay on the mild side.