Two Pacific Storms to Impact the Western U.S. This Week

Two Pacific storms will impact the western U.S. this week with low elevation rain, mountain snow, and gusty winds. The second storm arriving Tuesday night into Wednesday may bring heavy to excessive rainfall and possible flooding for coastal central and southern California, while heavy mountain snow is possible across the Sierra Nevada mountains. Read More >

Current conditions at

Garrison I-90 MP 174.4 (MTGAR)

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

NA

53°F

12°C

Humidity 32%
Wind Speed W 5 MPH
Barometer NA
Dewpoint 24°F (-4°C)
Visibility NA
Last update 15 Nov 03:30 PM MST
Extended Forecast for

6 Miles WNW Garrison MT

  • Tonight

    Tonight: Patchy fog after 3am.  Otherwise, mostly cloudy, with a low around 27. South wind around 6 mph becoming calm  after midnight.

    Low: 27 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: A 30 percent chance of rain, mainly between 3pm and 5pm.  Patchy fog before noon, then patchy fog after 5pm. Snow level 5400 feet rising to 6700 feet in the afternoon.  Otherwise, mostly cloudy, with a high near 45. Calm wind.

    High: 45 °F

    Patchy Fog
    then Chance
    Rain and
    Patchy Fog

  • Monday Night

    Monday Night: Rain and snow likely before 4am, then snow.  Patchy fog. Snow level 6100 feet lowering to 5000 feet after midnight . Low around 27. Calm wind.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 27 °F

    Chance
    Rain/Snow and
    Patchy Fog
    then
    Rain/Snow and
    Areas Fog

  • Tuesday

    Tuesday: Snow before 11am, then rain and snow.  Areas of fog before 11am. Snow level 4800 feet lowering to 4400 feet. High near 32. Light northwest wind.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    High: 32 °F

    Rain/Snow and
    Areas Fog

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before 11pm.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 21. West northwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 21 °F

    Snow Likely
    then Chance
    Snow and
    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog.  Otherwise, mostly sunny, with a high near 33.

    High: 33 °F

    Areas Fog

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of snow, mainly after 11am.  Mostly cloudy, with a high near 33.

    High: 33 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow.  Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 27. South wind around 6 mph becoming calm after midnight.
Monday
A 30 percent chance of rain, mainly between 3pm and 5pm. Patchy fog before noon, then patchy fog after 5pm. Snow level 5400 feet rising to 6700 feet in the afternoon. Otherwise, mostly cloudy, with a high near 45. Calm wind.
Monday Night
Rain and snow likely before 4am, then snow. Patchy fog. Snow level 6100 feet lowering to 5000 feet after midnight . Low around 27. Calm wind. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Tuesday
Snow before 11am, then rain and snow. Areas of fog before 11am. Snow level 4800 feet lowering to 4400 feet. High near 32. Light northwest wind. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
Snow likely, mainly before 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 21. West northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Wednesday
Areas of fog. Otherwise, mostly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 18.
Thursday
A chance of snow, mainly after 11am. Mostly cloudy, with a high near 33.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 19.
Friday
A chance of snow, mainly before 11am. Mostly cloudy, with a high near 32.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 33.
Saturday Night
Mostly cloudy, with a low around 16.
Sunday
A slight chance of snow. Partly sunny, with a high near 35.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WNW Garrison MT
 46.55°N 112.94°W (Elev. 4449 ft)
1:01 pm MST Nov 15, 2026
3pm MST Nov 15, 2026-6pm MST Nov 22, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database