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

Karst US-191 MP 55.3 (MTKAR)

Lat: 45.34534°NLon: 111.17261°WElev: 5699.0ft.

unknown precip

17°F

-8°C

Humidity 83%
Wind Speed N 4 MPH
Barometer NA
Dewpoint 13°F (-11°C)
Visibility NA
Wind Chill11°F (-12°C)
Last update 27 Dec 07:00 PM MST
Extended Forecast for

4 Miles E Big Sky MT

  • Tonight

    Tonight: A 40 percent chance of snow before 11pm.  Partly cloudy, with a low around 2. Light and variable wind.  Total nighttime snow accumulation of less than a half inch possible.

    Low: 2 °F

    Chance Snow
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 23. Calm wind.

    High: 23 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 6. Calm wind.

    Low: 6 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 37. Calm wind.

    High: 37 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 17. Calm wind.

    Low: 17 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 42. Calm wind.

    High: 42 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 21. Calm wind.

    Low: 21 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 46. Light south wind.

    High: 46 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 40 percent chance of snow before 11pm. Partly cloudy, with a low around 2. Light and variable wind. Total nighttime snow accumulation of less than a half inch possible.
Sunday
Sunny, with a high near 23. Calm wind.
Sunday Night
Mostly clear, with a low around 6. Calm wind.
Monday
Sunny, with a high near 37. Calm wind.
Monday Night
Partly cloudy, with a low around 17. Calm wind.
Tuesday
Mostly sunny, with a high near 42. Calm wind.
Tuesday Night
Partly cloudy, with a low around 21. Calm wind.
Wednesday
Mostly sunny, with a high near 46. Light south wind.
Wednesday Night
Partly cloudy, with a low around 25.
New Year's Day
Partly sunny, with a high near 47.
Thursday Night
Mostly cloudy, with a low around 27.
Friday
A chance of snow. Mostly cloudy, with a high near 44.
Friday Night
A chance of snow. Mostly cloudy, with a low around 21.
Saturday
A chance of snow. Partly sunny, with a high near 38.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Big Sky MT
 45.26°N 111.26°W (Elev. 5997 ft)
6:12 pm MST Dec 27, 2025
7pm MST Dec 27, 2025-6pm MST Jan 3, 2026
 
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Additional Resources

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