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

26°F

-3°C

Humidity 67%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Last update 28 Mar 05:00 AM MDT
Extended Forecast for

13 Miles ESE Big Sky MT

  • Today

    Today: Mostly sunny, with a high near 47. Breezy, with a west southwest wind 17 to 23 mph, with gusts as high as 33 mph.

    High: 47 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. Breezy, with a west wind 17 to 23 mph, with gusts as high as 32 mph.

    Low: 32 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 45. Windy, with a southwest wind 20 to 25 mph increasing to 26 to 31 mph in the afternoon. Winds could gust as high as 41 mph.

    High: 45 °F

    Mostly Sunny
    then Partly
    Sunny and
    Windy

  • Sunday Night

    Sunday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 32. Windy, with a southwest wind 25 to 32 mph, with gusts as high as 41 mph. Little or no snow accumulation expected.

    Low: 32 °F

    Chance Snow
    and Windy

  • Monday

    Monday: Snow. High near 35. Windy, with a southwest wind 26 to 30 mph, with gusts as high as 44 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 35 °F

    Snow and
    Windy

  • Monday Night

    Monday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 14. Blustery, with a west northwest wind 19 to 24 mph decreasing to 13 to 18 mph after midnight. Winds could gust as high as 34 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 32. South wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 32 °F

    Slight Chance
    Snow then
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24. South southwest wind 11 to 13 mph, with gusts as high as 28 mph.

    Low: 24 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of snow, mainly after noon. Partly sunny, with a high near 39. Breezy.

    High: 39 °F

    Chance Snow
    and Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 47. Breezy, with a west southwest wind 17 to 23 mph, with gusts as high as 33 mph.
Tonight
Mostly cloudy, with a low around 32. Breezy, with a west wind 17 to 23 mph, with gusts as high as 32 mph.
Sunday
Partly sunny, with a high near 45. Windy, with a southwest wind 20 to 25 mph increasing to 26 to 31 mph in the afternoon. Winds could gust as high as 41 mph.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 32. Windy, with a southwest wind 25 to 32 mph, with gusts as high as 41 mph. Little or no snow accumulation expected.
Monday
Snow. High near 35. Windy, with a southwest wind 26 to 30 mph, with gusts as high as 44 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 19 to 24 mph decreasing to 13 to 18 mph after midnight. Winds could gust as high as 34 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 32. South wind 10 to 17 mph, with gusts as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 24. South southwest wind 11 to 13 mph, with gusts as high as 28 mph.
Wednesday
A chance of snow, mainly after noon. Partly sunny, with a high near 39. Breezy.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 28. Breezy.
Thursday
Snow. The snow could be heavy at times. Cloudy, with a high near 30. Breezy.
Thursday Night
Snow likely. Mostly cloudy, with a low around 16.
Friday
Snow likely. Mostly cloudy, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles ESE Big Sky MT
 45.23°N 111.07°W (Elev. 9354 ft)
Last Update:
3:17 am MDT Mar 28, 2026
Forecast Valid:
5am MDT Mar 28, 2026-6pm MDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation