Critical Fire Weather in the High Plains and Midwest; Heavy Snow in the Western Mountains and Northern Plains

Gusty winds and low relative humidity will bring critical fire weather to the central/southern High Plains and portions of the Midwest. Two Pacific storms will continue to bring heavy mountain snow and gusty winds to the western U.S. through Thursday. A swath of wintry weather, including heavy snow and a wintry mix, is expected from the Northern Plains to New England. Read More >

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

20°F

-7°C

Humidity 90%
Wind Speed W 0 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Last update 18 Feb 06:45 AM MST
Extended Forecast for

12 Miles NE Big Sky MT

Winter Weather Advisory until February 18, 11:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until February 18, 11:00pm

    NOW until 11:00pm Wed

    Winter Weather Advisory

  • Today

    High: 22 °F

    Chance Snow
    then Snow
    Likely

  • Tonight

    Tonight: Snow likely, mainly before 11pm.  Mostly cloudy, with a low around 2. Northwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 2 °F

    Snow Likely
    then Chance
    Snow

  • Thursday

    Thursday: A 40 percent chance of snow.  Partly sunny, with a high near 22. Calm wind.  New snow accumulation of less than a half inch possible.

    High: 22 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A 20 percent chance of snow before 11pm.  Partly cloudy, with a low around 4. Calm wind.

    Low: 4 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of snow after 11am.  Partly sunny, with a high near 24. Calm wind becoming west around 5 mph in the afternoon.  Little or no snow accumulation expected.

    High: 24 °F

    Chance Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow before 11pm.  Partly cloudy, with a low around 6. Light and variable wind.

    Low: 6 °F

    Slight Chance
    Snow then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 30. South southwest wind around 5 mph.

    High: 30 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 10. Light south wind.

    Low: 10 °F

    Partly Cloudy

Detailed Forecast

Today
Snow likely, mainly after noon. Mostly cloudy, with a high near 22. Light and variable wind becoming north northwest 5 to 7 mph in the morning. Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow likely, mainly before 11pm. Mostly cloudy, with a low around 2. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Thursday
A 40 percent chance of snow. Partly sunny, with a high near 22. Calm wind. New snow accumulation of less than a half inch possible.
Thursday Night
A 20 percent chance of snow before 11pm. Partly cloudy, with a low around 4. Calm wind.
Friday
A 30 percent chance of snow after 11am. Partly sunny, with a high near 24. Calm wind becoming west around 5 mph in the afternoon. Little or no snow accumulation expected.
Friday Night
A 20 percent chance of snow before 11pm. Partly cloudy, with a low around 6. Light and variable wind.
Saturday
Sunny, with a high near 30. South southwest wind around 5 mph.
Saturday Night
Partly cloudy, with a low around 10. Light south wind.
Sunday
Partly sunny, with a high near 37.
Sunday Night
Partly cloudy, with a low around 21.
Monday
A chance of snow. Mostly sunny, with a high near 42.
Monday Night
A chance of snow. Mostly cloudy, with a low around 24.
Tuesday
Snow likely. Mostly cloudy, with a high near 37.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NE Big Sky MT
 45.39°N 111.19°W (Elev. 6998 ft)
4:27 am MST Feb 18, 2026
7am MST Feb 18, 2026-6pm MST Feb 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

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