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Garrison, Montana Weather Forecast
Garrison, Montana Weather
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Weather Forecast for Garrison, Montana : Powell County
Issued: 1:01 am MST Dec 17, 2025 Latitude: 46.5232622 Longitude: -112.81171 View on Google Maps

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Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
20% chance of snow on Today 10% chance of snow on Tonight 20% chance of snow on Thursday 20% chance of snow on Friday 20% chance of snow on Saturday 10% chance of snow on Sunday 10% chance of snow on Monday 10% chance of snow on Tuesday
High: 30 °F Low: 21°F High: 41°F High: 43°F High: 34°F High: 37°F High: 41°F High: 39°F
Low: 31°F Low: 19°F Low: 17°F Low: 22°F Low: 19°F  
Snow Snow Snow Snow Snow Snow Snow Snow
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Current Conditions at
HELENA - (KHLN)
52°
Mostly Clear
as of 5:53 AM MST
Rel. Humidity: 43%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.29 in.
Flight Rule: VFR
Wind Data
21 MPH
Gust: 36 MPH
200° South
Cloud Level(s): Few at 12000ft
Current Conditions at
BUTTE - (KBTM)
41°
Feels like 31°F
Mostly Clear
as of 5:53 AM MST
Rel. Humidity: 75%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.41 in.
Flight Rule: VFR
Wind Data
20 MPH
Gust: 33 MPH
190° South
Cloud Level(s): Few at 3900ft
Current Conditions at
MISSOULA - (KMSO)
48°
Feels like 42°F
Cloudy
as of 5:53 AM MST
Rel. Humidity: 70%
Dew Point: 39°F
Visibility: 10 Miles
Pressure: 29.20 in.
Flight Rule: VFR
Wind Data
13 MPH
150° Southeast
Cloud Level(s): Few at 5500ft, Broken at 7000ft, Solid Overcast at 9000ft
Current Conditions at
DILLON - (KDLN)
45°
Feels like 35°F
Mostly Cloudy
as of 5:53 AM MST
Rel. Humidity: 61%
Dew Point: 32°F
Visibility: 10 Miles
Pressure: 29.48 in.
Flight Rule: VFR
Wind Data
23 MPH
Gust: 39 MPH
190° South
Cloud Level(s): Broken at 4500ft
20% chance of snow Today Today... A 20 percent chance of snow. Cloudy through mid morning, then becoming mostly sunny, with a temperature falling to around 30 by 5pm. Windy, with a west wind 18 to 23 mph increasing to 31 to 36 mph in the afternoon. Winds could gust as high as 55 mph.
10% chance of snow Tonight Tonight... A 10 percent chance of snow. Mostly cloudy, with a low around 21. Windy, with a west wind 21 to 31 mph becoming south southwest 6 to 11 mph. Winds could gust as high as 44 mph.
20% chance of snow Thursday Thursday... A 20 percent chance of snow. Mostly cloudy, with a high near 41. South wind 5 to 7 mph.
20% chance of snow Thursday Night Thursday Night... A 20 percent chance of snow. Snow level 4700 feet rising to 6300 feet. Cloudy, with a low around 31. Southwest wind 8 to 13 mph, with gusts as high as 31 mph.
20% chance of snow Friday Friday... A 20 percent chance of snow. Snow level 5400 feet lowering to 4400 feet in the afternoon . Cloudy, with a high near 43. West wind around 11 mph, with gusts as high as 29 mph.
20% chance of snow Friday Night Friday Night... A 20 percent chance of snow. Mostly cloudy, with a low around 19.
20% chance of snow Saturday Saturday... A 20 percent chance of snow. Partly sunny, with a high near 34.
10% chance of snow Saturday Night Saturday Night... A slight chance of snow. Partly cloudy, with a low around 17.
10% chance of snow Sunday Sunday... A slight chance of snow. Partly sunny, with a high near 37.
10% chance of snow Sunday Night Sunday Night... A slight chance of snow. Snow level 5000 feet. Mostly cloudy, with a low around 22.
10% chance of snow Monday Monday... A slight chance of snow. Snow level 5900 feet lowering to 5200 feet. Mostly cloudy, with a high near 41.
10% chance of snow Monday Night Monday Night... A slight chance of snow. Mostly cloudy, with a low around 19.
10% chance of snow Tuesday Tuesday... A slight chance of snow. Partly sunny, with a high near 39.
Current Radar Image


Sun Almanac for Garrison, Montana
Sunrise: 08:10 AM
Sunset: 4:45 PM
Civil Sunrise:07:35 AM
Civil Sunset: 5:20 PM
Nautical Sunrise: 06:57 AM
Nautical Sunset: 5:58 PM
Astro Sunrise: 06:20 AM
Astro Sunset: 6:35 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.