National Weather Service United States Department of Commerce

Hot Weather in the West; Heavy Rainfall and Flooding in the Southwest

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S, with the Pacific Northwest carrying the potential for record-breaking high temperatures. Monsoonal moisture over the Southwest U.S. may lead to heavy rainfall and instances of flash flooding through Wednesday. Read More >

Great Falls, MT

Weather Forecast Office

NWS Forecast Office Great Falls, MT

Weather.gov > Great Falls, MT
Click a location below for detailed forecast.

Last Map Update: Tue, Sep 2, 2025 at 12:00:20 pm MDT

Smoke Moving South Into Montana
A Cool Friday Morning Ahead
Smoke will move southward from Canada into North Central MT today. The smoke will become thicker this afternoon and evening, with visibility reduced at times.
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Cooler air will move into the area later this week. By Friday morning, most areas will have morning low temperatures in the 40s, with 30s possible in some of the colder spots.
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