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.

NA

39°F

4°C

Humidity 43%
Wind Speed NW 3 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Last update 08 Apr 01:45 AM MDT
Extended Forecast for

4 Miles NW Garrison MT

  • Overnight

    Overnight: Mostly clear, with a low around 26. West wind 8 to 13 mph becoming light northwest. Winds could gust as high as 29 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 56. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 28. West northwest wind 5 to 9 mph becoming calm in the evening.

    Low: 28 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 58. Calm wind.

    High: 58 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 28. North wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Clear

  • Friday

    Friday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Saturday

    Saturday: Rain likely, mainly after noon. Partly sunny, with a high near 68.

    High: 68 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Rain Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 26. West wind 8 to 13 mph becoming light northwest. Winds could gust as high as 29 mph.
Wednesday
Sunny, with a high near 56. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 28. West northwest wind 5 to 9 mph becoming calm in the evening.
Thursday
Sunny, with a high near 58. Calm wind.
Thursday Night
Clear, with a low around 28. North wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 67.
Friday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 38.
Saturday
Rain likely, mainly after noon. Partly sunny, with a high near 68.
Saturday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 35.
Sunday
A chance of rain before 9am, then a chance of rain and snow between 9am and noon, then rain likely after noon. Mostly cloudy, with a high near 52.
Sunday Night
Rain and snow likely. Snow level 6800 feet lowering to 5400 feet after midnight . Mostly cloudy, with a low around 29.
Monday
Rain and snow likely. Snow level 5000 feet rising to 5500 feet in the afternoon. Mostly cloudy, with a high near 47.
Monday Night
A chance of rain and snow. Snow level 5700 feet lowering to 4900 feet after midnight . Mostly cloudy, with a low around 25.
Tuesday
A slight chance of rain and snow. Snow level 4700 feet rising to 6000 feet in the afternoon. Partly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Garrison MT
 46.57°N 112.88°W (Elev. 4626 ft)
Last Update:
2:01 am MDT Apr 8, 2026
Forecast Valid:
2am MDT Apr 8, 2026-6pm MDT Apr 14, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation