National Weather Service United States Department of Commerce

Extreme Heat and Excessive Rainfall This Week

A significant heat wave is underway for the Intermountain West, Northern Plains, and Upper Great Lakes, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. In southwest Texas, excessive rainfall may bring a risk for potentially life-threatening flash and arroyo flooding through Thursday. 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, Jul 14, 2026 at 7:16:42 am MDT

NWS Great Falls Radar Animation
Thunderstorms With Intense Rainfall Today
Flash Flooding From Thunderstorms This Week
NWS Great Falls Radar Animation
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Thunderstorms late this afternoon and evening may produce brief but intense rainfall along with isolated damaging winds and hail. Intense rainfall may create localized flash flooding particularly in steep terrain and near burn scars. Have a way to receive weather alerts this afternoon and evening. #MTwx
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Daily chances for showers and thunderstorms this week will also bring a flash flooding risk to any thunderstorm producing heavy rainfall. Areas that are most at risk will be burn scars and urban areas. Don’t try to travel through flood waters. Turn around don’t drown! #MTwx
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