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Great Falls, Montana Weather Forecast
Great Falls, Montana Weather
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Weather Forecast for Great Falls, Montana : Cascade County
Issued: 9:18 am MST Dec 17, 2025 Latitude: 47.5002354 Longitude: -111.3008083 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
Dust on Today Cloudy on Tonight Partly Sunny on Thursday 40% chance of rain & snow on Friday Mostly Sunny on Saturday Mostly Sunny on Sunday 10% chance of rain & snow on Monday Mostly Sunny on Tuesday
High: 38 °F Low: 26°F High: 47°F High: 49°F High: 41°F High: 42°F High: 42°F High: 42°F
Low: 37°F Low: 22°F Low: 25°F Low: 26°F Low: 24°F  
Dust Cloudy Partly Sunny Rain & Snow Mostly Sunny Mostly Sunny Rain & Snow Mostly Sunny
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Current Conditions at
HELENA - (KHLN)
43°
Feels like 33°F
Cloudy
Light Rain
as of 10:02 AM MST
Rel. Humidity: 75%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.29 in.
Flight Rule: VFR
Wind Data
22 MPH
Gust: 32 MPH
260° West
Cloud Level(s): Broken at 3300ft, Broken at 4900ft, Solid Overcast at 6000ft
Dust on Today Today... Patchy blowing dust. Mostly sunny, with a temperature falling to around 38 by 5pm. Windy, with a west wind 36 to 43 mph, with gusts as high as 60 mph.

Cloudy on Tonight Tonight... Partly cloudy, with a low around 26. Windy, with a west wind 25 to 30 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 48 mph.

Partly Sunny on Thursday Thursday... Partly sunny, with a high near 47. South southwest wind around 16 mph, with gusts as high as 26 mph.

30% chance of rain & snow Thursday Night Thursday Night... A slight chance of rain and snow before 11pm, then a chance of rain. Mostly cloudy, with a low around 37. Breezy, with a southwest wind 13 to 18 mph increasing to 24 to 29 mph after midnight. Winds could gust as high as 46 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

40% chance of rain & snow Friday Friday... A chance of rain and snow before 11am, then a chance of snow. Partly sunny, with a high near 49. Breezy, with a west wind 20 to 28 mph, with gusts as high as 44 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

30% chance of snow Friday Night Friday Night... A 30 percent chance of snow, mainly before 11pm. Partly cloudy, with a low around 22. West southwest wind around 11 mph, with gusts as high as 21 mph. Little or no snow accumulation expected.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 41. West southwest wind 10 to 20 mph, with gusts as high as 32 mph.

Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 25. Southwest wind 13 to 15 mph, with gusts as high as 26 mph.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 42.

10% chance of rain & snow Sunday Night Sunday Night... A slight chance of rain and snow after 11pm. Mostly cloudy, with a low around 26.

10% chance of rain & snow Monday Monday... A slight chance of rain and snow. Partly sunny, with a high near 42.

10% chance of rain & snow Monday Night Monday Night... A slight chance of rain and snow. Partly cloudy, with a low around 24.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 42.

Sun Almanac for Great Falls, Montana
Sunrise: 08:08 AM
Sunset: 4:35 PM
Civil Sunrise:07:32 AM
Civil Sunset: 5:11 PM
Nautical Sunrise: 06:53 AM
Nautical Sunset: 5:50 PM
Astro Sunrise: 06:15 AM
Astro Sunset: 6:28 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.