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

HARLEM (HRLM)

Lat: 48.54333°NLon: 108.83472°WElev: 2358.0ft.

NA

0°F

-18°C

Humidity 61%
Wind Speed WNW 14 MPH
Barometer NA
Dewpoint -10°F (-23°C)
Visibility NA
Wind Chill-19°F (-28°C)
Last update 27 Dec 04:00 PM MST
Extended Forecast for

Chinook MT

Extreme Cold Warning December 27, 05:29pm until December 28, 11:00am
Click here for hazard details and duration
Extreme Cold Warning
  •  
    Extreme Cold Warning December 27, 05:29pm until December 28, 11:00am

    NOW until 11:00am Sun

    Extreme Cold Warning

  • Tonight

    Low: -15 °F

    Patchy
    Blowing Snow
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny and cold, with a high near -1. Wind chill values as low as -30. West wind around 6 mph becoming calm  in the morning.

    High: -1 °F

    Cold

  • Sunday Night

    Sunday Night: Partly cloudy, with a temperature rising to around 2 by 5am. Light and variable wind.

    Low: -5 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 30. Wind chill values as low as -10. West wind 6 to 10 mph.

    High: 30 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 19. West wind around 10 mph.

    Low: 19 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37. West wind 7 to 10 mph.

    High: 37 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20. Southwest wind 6 to 8 mph.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 31. West wind 8 to 10 mph.

    High: 31 °F

    Partly Sunny

Detailed Forecast

Tonight
Patchy blowing snow before 8pm. Mostly cloudy, with a low around -15. Wind chill values as low as -35. West northwest wind 10 to 20 mph, with gusts as high as 29 mph.
Sunday
Sunny and cold, with a high near -1. Wind chill values as low as -30. West wind around 6 mph becoming calm in the morning.
Sunday Night
Partly cloudy, with a temperature rising to around 2 by 5am. Light and variable wind.
Monday
Mostly sunny, with a high near 30. Wind chill values as low as -10. West wind 6 to 10 mph.
Monday Night
Mostly cloudy, with a low around 19. West wind around 10 mph.
Tuesday
Mostly sunny, with a high near 37. West wind 7 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 20. Southwest wind 6 to 8 mph.
Wednesday
Partly sunny, with a high near 31. West wind 8 to 10 mph.
Wednesday Night
Mostly cloudy, with a low around 13.
New Year's Day
Partly sunny, with a high near 29.
Thursday Night
Mostly cloudy, with a low around 16.
Friday
Mostly cloudy, with a high near 37.
Friday Night
Mostly cloudy, with a low around 12.
Saturday
Partly sunny, with a high near 28.
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ABOUT THIS FORECAST

 
Point Forecast:
Chinook MT
 48.59°N 109.26°W (Elev. 2408 ft)
4:21 pm MST Dec 27, 2025
5pm MST Dec 27, 2025-6pm MST Jan 3, 2026
 
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Additional Resources

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