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

51°F

11°C

Humidity 32%
Wind Speed ESE 9 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Last update 30 Mar 09:15 AM MDT
Extended Forecast for

14 Miles ESE Big Sky MT

  • Today

    Today: Snow likely, mainly after 4pm. Increasing clouds, with a high near 39. Windy, with a southwest wind 23 to 33 mph, with gusts as high as 50 mph. Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.

    High: 39 °F

    Windy. Partly
    Sunny then
    Snow Likely

  • Tonight

    Tonight: Snow, mainly before 10pm. Low around 16. Breezy, with a west wind 17 to 22 mph becoming southeast 9 to 14 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 16 °F

    Snow and
    Breezy then
    Chance Snow

  • Tuesday

    Tuesday: Snow likely, mainly after noon. Mostly cloudy, with a high near 33. South southeast wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 33 °F

    Chance Snow
    then Snow
    Likely

  • Tuesday Night

    Tuesday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 26. South southwest wind 9 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 26 °F

    Snow Likely
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow, mainly after noon. High near 34. Southwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 34 °F

    Chance Snow
    then Snow

  • Wednesday Night

    Wednesday Night: Snow. Low around 27. Breezy, with a south wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 27 °F

    Snow and
    Breezy

  • Thursday

    Thursday: Snow. The snow could be heavy at times. High near 28. Breezy, with a south wind 22 to 25 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    High: 28 °F

    Heavy Snow
    and Breezy

  • Thursday Night

    Thursday Night: Snow. The snow could be heavy at times. Mostly cloudy, with a low around 18. Breezy, with a west southwest wind 18 to 24 mph, with gusts as high as 33 mph.

    Low: 18 °F

    Heavy Snow
    and Breezy

  • Friday

    Friday: Snow likely, mainly before noon. Mostly cloudy, with a high near 25.

    High: 25 °F

    Snow Likely

Detailed Forecast

Today
Snow likely, mainly after 4pm. Increasing clouds, with a high near 39. Windy, with a southwest wind 23 to 33 mph, with gusts as high as 50 mph. Chance of precipitation is 70%. Total daytime snow accumulation of around an inch possible.
Tonight
Snow, mainly before 10pm. Low around 16. Breezy, with a west wind 17 to 22 mph becoming southeast 9 to 14 mph after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Snow likely, mainly after noon. Mostly cloudy, with a high near 33. South southeast wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Tuesday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 26. South southwest wind 9 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Wednesday
Snow, mainly after noon. High near 34. Southwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow. Low around 27. Breezy, with a south wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday
Snow. The snow could be heavy at times. High near 28. Breezy, with a south wind 22 to 25 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Thursday Night
Snow. The snow could be heavy at times. Mostly cloudy, with a low around 18. Breezy, with a west southwest wind 18 to 24 mph, with gusts as high as 33 mph.
Friday
Snow likely, mainly before noon. Mostly cloudy, with a high near 25.
Friday Night
A slight chance of snow before midnight. Partly cloudy, with a low around 17.
Saturday
Sunny, with a high near 35.
Saturday Night
Mostly clear, with a low around 22.
Sunday
Mostly sunny, with a high near 41.
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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:
3:46 am MDT Mar 30, 2026
Forecast Valid:
9am MDT Mar 30, 2026-6pm MDT Apr 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation