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

Sieben I-15 MP 216 (MTSBN)

Lat: 46.88748267°NLon: 112.1111196°WElev: 4199.0ft.

NA

0°F

-18°C

Humidity 69%
Wind Speed S 2 MPH
Barometer NA
Dewpoint -8°F (-22°C)
Visibility NA
Last update 28 Dec 01:45 AM MST
Extended Forecast for

8 Miles WSW Marysville MT

  • Overnight

    Overnight: Mostly clear, with a low around -8. Wind chill values as low as -25. West wind around 11 mph, with gusts as high as 18 mph.

    Low: -8 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 14. Wind chill values as low as -25. West wind around 14 mph, with gusts as high as 24 mph.

    High: 14 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 13. Wind chill values as low as -5. West southwest wind 14 to 16 mph, with gusts as high as 24 mph.

    Low: 13 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 23. West southwest wind around 15 mph, with gusts as high as 23 mph.

    High: 23 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 20. West southwest wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 20 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 29. West southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 29 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24. West southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34. West southwest wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around -8. Wind chill values as low as -25. West wind around 11 mph, with gusts as high as 18 mph.
Sunday
Sunny, with a high near 14. Wind chill values as low as -25. West wind around 14 mph, with gusts as high as 24 mph.
Sunday Night
Partly cloudy, with a low around 13. Wind chill values as low as -5. West southwest wind 14 to 16 mph, with gusts as high as 24 mph.
Monday
Mostly sunny, with a high near 23. West southwest wind around 15 mph, with gusts as high as 23 mph.
Monday Night
Mostly cloudy, with a low around 20. West southwest wind 11 to 13 mph, with gusts as high as 23 mph.
Tuesday
Partly sunny, with a high near 29. West southwest wind around 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 24. West southwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 34. West southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly cloudy, with a low around 24.
New Year's Day
Partly sunny, with a high near 34.
Thursday Night
Mostly cloudy, with a low around 25.
Friday
A chance of snow. Mostly cloudy, with a high near 33.
Friday Night
A chance of snow. Mostly cloudy, with a low around 21.
Saturday
A chance of snow. Partly sunny, with a high near 27.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles WSW Marysville MT
 46.72°N 112.44°W (Elev. 6440 ft)
1:02 am MST Dec 28, 2025
2am 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