National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

Lat: 46.52361°NLon: 112.80843°WElev: 4327.0ft.

unknown precip

39°F

4°C

Humidity 91%
Wind Speed NW 8 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Wind Chill33°F (1°C)
Last update 09 Mar 02:15 AM MDT
Extended Forecast for

6 Miles NNW Garrison MT

  • Overnight

    Overnight: A chance of rain and snow before 4am, then a chance of snow. Mostly cloudy, with a low around 28. Breezy, with a west wind 21 to 24 mph, with gusts as high as 41 mph. Chance of precipitation is 50%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance
    Rain/Snow and
    Breezy

  • Monday

    Monday: A 50 percent chance of snow after 4pm. Partly sunny, with a high near 36. Breezy, with a west wind 18 to 28 mph, with gusts as high as 39 mph. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Chance Snow
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 17. Breezy, with a west wind 17 to 22 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 34 mph.

    Low: 17 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Snow likely, mainly after noon. Partly sunny, with a high near 31. West wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 31 °F

    Chance Snow
    then Snow
    Likely

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 13. Southwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.

    Low: 13 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of snow, mainly after noon. Partly sunny, with a high near 41. Little or no snow accumulation expected.

    High: 41 °F

    Slight Chance
    Snow then
    Chance Snow

  • Wednesday Night

    Wednesday Night: Rain and snow, becoming all rain after 3am. Snow level 4900 feet rising to 5600 feet after midnight. Low around 34. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain/Snow

  • Thursday

    Thursday: Rain before noon, then rain and snow. Snow level 5700 feet. Cloudy, with a high near 44. Breezy.

    High: 44 °F

    Breezy. Rain
    then
    Rain/Snow

  • Thursday Night

    Thursday Night: Rain and snow. Snow level 5300 feet. Cloudy, with a low around 35. Breezy.

    Low: 35 °F

    Rain/Snow and
    Breezy

Detailed Forecast

Overnight
A chance of rain and snow before 4am, then a chance of snow. Mostly cloudy, with a low around 28. Breezy, with a west wind 21 to 24 mph, with gusts as high as 41 mph. Chance of precipitation is 50%. Total nighttime snow accumulation of less than a half inch possible.
Monday
A 50 percent chance of snow after 4pm. Partly sunny, with a high near 36. Breezy, with a west wind 18 to 28 mph, with gusts as high as 39 mph. New snow accumulation of less than a half inch possible.
Monday Night
Partly cloudy, with a low around 17. Breezy, with a west wind 17 to 22 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 34 mph.
Tuesday
Snow likely, mainly after noon. Partly sunny, with a high near 31. West wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Tuesday Night
Partly cloudy, with a low around 13. Southwest wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Wednesday
A 50 percent chance of snow, mainly after noon. Partly sunny, with a high near 41. Little or no snow accumulation expected.
Wednesday Night
Rain and snow, becoming all rain after 3am. Snow level 4900 feet rising to 5600 feet after midnight. Low around 34. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday
Rain before noon, then rain and snow. Snow level 5700 feet. Cloudy, with a high near 44. Breezy.
Thursday Night
Rain and snow. Snow level 5300 feet. Cloudy, with a low around 35. Breezy.
Friday
Rain and snow, becoming all rain after noon. Snow level 5300 feet. Cloudy, with a high near 44.
Friday Night
Rain and snow. Snow level 5500 feet. Cloudy, with a low around 34.
Saturday
Rain and snow. Snow level 5200 feet. Cloudy, with a high near 44. Breezy.
Saturday Night
Snow likely. Mostly cloudy, with a low around 24. Breezy.
Sunday
A chance of snow. Mostly cloudy, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles NNW Garrison MT
 46.6°N 112.85°W (Elev. 4767 ft)
Last Update:
2:01 am MDT Mar 9, 2026
Forecast Valid:
2am MDT Mar 9, 2026-6pm MDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation