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

Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

Ravalli County Airport (KHRF)

Lat: 46.25463°NLon: 114.1246°WElev: 3644.0ft.

Mostly Cloudy

16°F

-9°C

Humidity 66%
Wind Speed SE 8 MPH
Barometer 30.25 in (1024.38 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill5°F (-15°C)
Last update 27 Dec 09:55 PM MST
Extended Forecast for

Corvallis MT

  • Tonight

    Tonight: Partly cloudy, with a low around 4. South southeast wind 3 to 5 mph.

    Low: 4 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 28. Wind chill values as low as zero. Light south southeast wind.

    High: 28 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 8. Light south wind.

    Low: 8 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 36. Light south wind.

    High: 36 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 20. Light south wind.

    Low: 20 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 40.

    High: 40 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 4. South southeast wind 3 to 5 mph.
Sunday
Sunny, with a high near 28. Wind chill values as low as zero. Light south southeast wind.
Sunday Night
Mostly clear, with a low around 8. Light south wind.
Monday
Mostly sunny, with a high near 36. Light south wind.
Monday Night
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 20. Light south wind.
Tuesday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
Mostly sunny, with a high near 44.
Wednesday Night
Partly cloudy, with a low around 27.
New Year's Day
Partly sunny, with a high near 45.
Thursday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 29.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 42.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 25.
Saturday
A chance of snow. Mostly cloudy, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Corvallis MT
 46.31°N 114.1°W (Elev. 3566 ft)
Last Update:
1:02 pm MST Dec 27, 2025
Forecast Valid:
10pm MST Dec 27, 2025-6pm MST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation