Atmospheric River to Begin to Impact the Northwest U.S.; Gusty Winds in the Northeast U.S.

A strong atmospheric river moving into northern California later Tuesday will bring a threat for moderate to heavy rainfall and flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. through at least Wednesday. Gusty winds and isolated rain and snow showers will continue in the Northeast U.S. Tuesday behind a cold front. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

34°F

1°C

Humidity 69%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Last update 03 Nov 06:45 PM MST
Extended Forecast for

Garrison MT

  • Tonight

    Tonight: Rain, mainly after 1am.  Low around 31. Light and variable wind.  Chance of precipitation is 80%.

    Low: 31 °F

    Chance Rain
    then Rain

  • Tuesday

    Tuesday: A chance of rain before 8am, then a chance of rain after 11am.  Cloudy, then gradually becoming mostly sunny, with a high near 51. Light and variable wind becoming west 5 to 7 mph in the morning.  Chance of precipitation is 30%.

    High: 51 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow after 11pm.  Patchy fog between 8pm and 11pm.  Otherwise, mostly cloudy, with a low around 29. Calm wind.  Chance of precipitation is 20%.

    Low: 29 °F

    Slight Chance
    Rain/Snow and
    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of rain after 11am.  Mostly cloudy, with a high near 59. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 18 mph.

    High: 59 °F

    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely.  Mostly cloudy, with a low around 31. West southwest wind 9 to 11 mph, with gusts as high as 28 mph.  Chance of precipitation is 60%.

    Low: 31 °F

    Rain Likely

  • Thursday

    Thursday: A 30 percent chance of rain, mainly before 11am.  Partly sunny, with a high near 48.

    High: 48 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Snow likely, possibly mixed with rain, mainly after 5am.  Mostly cloudy, with a low around 27. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 27 °F

    Chance
    Rain/Snow
    then
    Rain/Snow
    Likely

  • Friday

    Friday: Rain and snow likely before 8am, then rain.  Mostly cloudy, with a high near 49.

    High: 49 °F

    Rain/Snow
    then Rain

  • Friday Night

    Friday Night: A chance of rain before 8pm, then a chance of rain and snow between 8pm and 2am, then a slight chance of snow after 2am.  Snow level 5600 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Rain, mainly after 1am. Low around 31. Light and variable wind. Chance of precipitation is 80%.
Tuesday
A chance of rain before 8am, then a chance of rain after 11am. Cloudy, then gradually becoming mostly sunny, with a high near 51. Light and variable wind becoming west 5 to 7 mph in the morning. Chance of precipitation is 30%.
Tuesday Night
A slight chance of rain and snow after 11pm. Patchy fog between 8pm and 11pm. Otherwise, mostly cloudy, with a low around 29. Calm wind. Chance of precipitation is 20%.
Wednesday
A 20 percent chance of rain after 11am. Mostly cloudy, with a high near 59. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 18 mph.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 31. West southwest wind 9 to 11 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Thursday
A 30 percent chance of rain, mainly before 11am. Partly sunny, with a high near 48.
Thursday Night
Snow likely, possibly mixed with rain, mainly after 5am. Mostly cloudy, with a low around 27. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday
Rain and snow likely before 8am, then rain. Mostly cloudy, with a high near 49.
Friday Night
A chance of rain before 8pm, then a chance of rain and snow between 8pm and 2am, then a slight chance of snow after 2am. Snow level 5600 feet lowering to 4400 feet after midnight . Mostly cloudy, with a low around 22.
Saturday
Widespread frost before 11am. Otherwise, partly sunny, with a high near 43.
Saturday Night
Widespread frost. Otherwise, mostly cloudy, with a low around 20.
Sunday
Widespread frost. Otherwise, partly sunny, with a high near 51.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 27.
Monday
A chance of rain and snow. Partly sunny, with a high near 54.
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ABOUT THIS FORECAST

 
Point Forecast:
Garrison MT
 46.52°N 112.78°W (Elev. 4396 ft)
1:02 pm MST Nov 3, 2025
7pm MST Nov 3, 2025-6pm MST Nov 10, 2025
 
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Additional Resources

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