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

44°F

7°C

Humidity 39%
Wind Speed SW 1 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Last update 13 Apr 12:15 PM MDT
Extended Forecast for

14 Miles ESE Big Sky MT

  • This Afternoon

    This Afternoon: Snow likely, mainly after 4pm. Mostly cloudy, with a high near 31. Breezy, with a southwest wind 22 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 31 °F

    Snow Likely
    and Breezy

  • Tonight

    Tonight: A 40 percent chance of snow, mainly before 7pm. The snow could be heavy at times. Mostly cloudy, with a low around 23. Southwest wind 11 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. New snow accumulation of less than one inch possible.

    Low: 23 °F

    Heavy Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. Southwest wind 13 to 21 mph, with gusts as high as 32 mph.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 26. Breezy, with a south southwest wind around 22 mph, with gusts as high as 32 mph.

    Low: 26 °F

    Partly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Snow likely, mainly after noon. Mostly cloudy, with a high near 33. Windy, with a south southwest wind 22 to 30 mph, with gusts as high as 46 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 33 °F

    Chance Snow
    and Breezy
    then Snow
    Likely and
    Windy

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Low around 20. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 20 °F

    Heavy Snow
    and Windy

  • Thursday

    Thursday: Snow. The snow could be heavy at times. High near 22. West southwest wind 18 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    High: 22 °F

    Heavy Snow

  • Thursday Night

    Thursday Night: Snow, mainly before midnight. Mostly cloudy, with a low around 8. Northwest wind 17 to 20 mph, with gusts as high as 29 mph.

    Low: 8 °F

    Snow

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 22.

    High: 22 °F

    Chance Snow

Detailed Forecast

This Afternoon
Snow likely, mainly after 4pm. Mostly cloudy, with a high near 31. Breezy, with a southwest wind 22 to 24 mph, with gusts as high as 39 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A 40 percent chance of snow, mainly before 7pm. The snow could be heavy at times. Mostly cloudy, with a low around 23. Southwest wind 11 to 20 mph becoming west northwest after midnight. Winds could gust as high as 30 mph. New snow accumulation of less than one inch possible.
Tuesday
Mostly sunny, with a high near 35. Southwest wind 13 to 21 mph, with gusts as high as 32 mph.
Tuesday Night
Partly cloudy, with a low around 26. Breezy, with a south southwest wind around 22 mph, with gusts as high as 32 mph.
Wednesday
Snow likely, mainly after noon. Mostly cloudy, with a high near 33. Windy, with a south southwest wind 22 to 30 mph, with gusts as high as 46 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 20. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Thursday
Snow. The snow could be heavy at times. High near 22. West southwest wind 18 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Thursday Night
Snow, mainly before midnight. Mostly cloudy, with a low around 8. Northwest wind 17 to 20 mph, with gusts as high as 29 mph.
Friday
A chance of snow. Mostly cloudy, with a high near 22.
Friday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 11. Blustery.
Saturday
Sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
A slight chance of snow. Mostly sunny, with a high near 40.
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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:
10:02 am MDT Apr 13, 2026
Forecast Valid:
12pm MDT Apr 13, 2026-6pm MDT Apr 19, 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