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 >

Hazardous Weather Conditions

Current conditions at

Ravalli County Airport (KHRF)

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

Clear

23°F

-5°C

Humidity 35%
Wind Speed NNW 10 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 27 Dec 06:55 PM MST
Extended Forecast for

10 Miles E Corvallis MT

Winter Weather Advisory December 27, 07:22pm until December 27, 08:00pm
Click here for hazard details and duration
...
  •  
    Winter Weather Advisory December 27, 07:22pm until December 27, 08:00pm

    NOW until 8:00pm Sat

    Winter Weather Advisory

  • Tonight

    Low: 0 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 13. Wind chill values as low as -12. South wind 6 to 8 mph.

    High: 13 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 10. Wind chill values as low as -1. South southwest wind 6 to 8 mph.

    Low: 10 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 23. South southwest wind 6 to 8 mph.

    High: 23 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 18. West southwest wind 6 to 8 mph.

    Low: 18 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 27.

    High: 27 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 0. Wind chill values as low as -14. West northwest wind 7 to 10 mph becoming southwest after midnight.
Sunday
Sunny, with a high near 13. Wind chill values as low as -12. South wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 10. Wind chill values as low as -1. South southwest wind 6 to 8 mph.
Monday
Mostly sunny, with a high near 23. South southwest wind 6 to 8 mph.
Monday Night
Mostly cloudy, with a low around 18. West southwest wind 6 to 8 mph.
Tuesday
Partly sunny, with a high near 27.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
Mostly sunny, with a high near 32.
Wednesday Night
Partly cloudy, with a low around 23.
New Year's Day
Mostly cloudy, with a high near 31.
Thursday Night
A slight chance of snow. Mostly cloudy, with a low around 23.
Friday
A chance of snow. Mostly cloudy, with a high near 28.
Friday Night
A chance of snow. Mostly cloudy, with a low around 18.
Saturday
A chance of snow. Mostly cloudy, with a high near 23.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
10 Miles E Corvallis MT
 46.32°N 113.91°W (Elev. 7799 ft)
Last Update:
1:02 pm MST Dec 27, 2025
Forecast Valid:
7pm MST Dec 27, 2025-6pm MST Jan 3, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation