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Severe Thunderstorm and Tropical Storm Bertha Impacts

Numerous severe thunderstorms are expected across a broad region from the Ohio Valley to the Mid-Atlantic and Northeast States today into tonight. Swaths of damaging wind gusts are expected and some tornadoes are possible. Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the Florida Panhandle westward to southeastern Louisiana later today and 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, Jul 21, 2026 at 2:02:27 pm MDT

Locally Heavy Thunderstorm Rains Wednesday
Increased Shower & Thunderstorm Activity
Late Week Heat
Scattered to numerous showers and thunderstorms move in Wednesday afternoon and evening. Some storms may produce heavy rainfall capable of localized flash flooding of burn scars, urban areas, and other flood prone locations. Beware of your surroundings and and have multiple ways to receive warnings. #MTwx.
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Increasing heat and humidity will bring multiple rounds of showers and thunderstorms today thru Friday. Some of the storms will be strong to severe with strong, gusty winds, torrential downpours, and hail in addition to dangerous lightning, especially Wednesday and Thursday. Have multiple ways to receive warnings. #MTwx
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Temperatures warm significantly during the second half of the week. Plan for a return to hot conditions and exercise precaution to avoid heat related illnesses. #MTwx
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