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

Lewistown Divide MT-200 MP 90.3 (MTLEW)

Lat: 47.07579°NLon: 109.26247°WElev: 4723.0ft.

NA

-1°F

-18°C

Humidity 74%
Wind Speed SSE 13 MPH
Barometer NA
Dewpoint -7°F (-22°C)
Visibility NA
Wind Chill-19°F (-28°C)
Last update 28 Dec 03:00 AM MST
Extended Forecast for

9 Miles ENE Lewistown MT

Cold Weather Advisory December 28, 03:26am until December 28, 11:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory December 28, 03:26am until December 28, 11:00am

    NOW until 11:00am Sun

    Cold Weather Advisory

  • Overnight

    Low: -12 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 18. Wind chill values as low as -30. West wind 7 to 10 mph.

    High: 18 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a temperature rising to around 20 by 5am. West wind 7 to 10 mph.

    Low: 13 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 33. West wind 10 to 15 mph, with gusts as high as 21 mph.

    High: 33 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27. West wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39. West wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 39 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 31. West southwest wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 44. West wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 44 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around -12. Wind chill values as low as -35. West northwest wind around 15 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 18. Wind chill values as low as -30. West wind 7 to 10 mph.
Sunday Night
Mostly clear, with a temperature rising to around 20 by 5am. West wind 7 to 10 mph.
Monday
Mostly sunny, with a high near 33. West wind 10 to 15 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, with a low around 27. West wind 9 to 11 mph, with gusts as high as 21 mph.
Tuesday
Mostly sunny, with a high near 39. West wind 6 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
Partly cloudy, with a low around 31. West southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Wednesday
Mostly sunny, with a high near 44. West wind 7 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 30.
New Year's Day
Partly sunny, with a high near 44.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Mostly cloudy, with a high near 43.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 24.
Saturday
A slight chance of snow. Partly sunny, with a high near 34.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles ENE Lewistown MT
 47.1°N 109.25°W (Elev. 5325 ft)
2:52 am MST Dec 28, 2025
3am MST Dec 28, 2025-6pm MST Jan 3, 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