National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

24°F

-4°C

Humidity 74%
Wind Speed SSE 0 MPH
Barometer NA
Dewpoint 17°F (-8°C)
Visibility NA
Last update 28 Mar 07:15 AM MDT
Extended Forecast for

14 Miles ESE Big Sky MT

  • Today

    Today: Mostly sunny, with a high near 46. Southwest wind 16 to 21 mph, with gusts as high as 32 mph.

    High: 46 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. West wind 15 to 21 mph, with gusts as high as 31 mph.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 43. Breezy, with a southwest wind 17 to 22 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 43 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 31. Breezy, with a southwest wind 22 to 29 mph, with gusts as high as 38 mph. Little or no snow accumulation expected.

    Low: 31 °F

    Chance Snow
    and Breezy

  • Monday

    Monday: Snow. High near 34. Breezy, with a southwest wind 23 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 34 °F

    Snow and
    Breezy

  • Monday Night

    Monday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 14. Blustery, with a west northwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 31 mph. New snow accumulation of less than one inch possible.

    Low: 14 °F

    Chance Snow
    and Blustery

  • Tuesday

    Tuesday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 31. South wind 9 to 16 mph, with gusts as high as 28 mph.

    High: 31 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23. South wind around 17 mph, with gusts as high as 26 mph.

    Low: 23 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of snow, mainly after noon. Partly sunny, with a high near 37. Breezy.

    High: 37 °F

    Chance Snow
    and Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 46. Southwest wind 16 to 21 mph, with gusts as high as 32 mph.
Tonight
Mostly cloudy, with a low around 31. West wind 15 to 21 mph, with gusts as high as 31 mph.
Sunday
Partly sunny, with a high near 43. Breezy, with a southwest wind 17 to 22 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 40 mph.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 31. Breezy, with a southwest wind 22 to 29 mph, with gusts as high as 38 mph. Little or no snow accumulation expected.
Monday
Snow. High near 34. Breezy, with a southwest wind 23 to 28 mph, with gusts as high as 43 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 14. Blustery, with a west northwest wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 31 mph. New snow accumulation of less than one inch possible.
Tuesday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 31. South wind 9 to 16 mph, with gusts as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 23. South wind around 17 mph, with gusts as high as 26 mph.
Wednesday
A chance of snow, mainly after noon. Partly sunny, with a high near 37. Breezy.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 27. Breezy.
Thursday
Snow. Cloudy, with a high near 29. Breezy.
Thursday Night
Snow likely. Mostly cloudy, with a low around 16. Breezy.
Friday
Snow likely. Mostly cloudy, with a high near 25.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
14 Miles ESE Big Sky MT
 45.17°N 111.09°W (Elev. 9400 ft)
Last Update:
3:17 am MDT Mar 28, 2026
Forecast Valid:
7am MDT Mar 28, 2026-6pm MDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation