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

45°F

7°C

Humidity 39%
Wind Speed S 7 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Wind Chill41°F (5°C)
Last update 13 Apr 01:45 PM MDT
Extended Forecast for

13 Miles ESE Big Sky MT

  • This Afternoon

    This Afternoon: A 50 percent chance of snow, mainly after 3pm. Mostly cloudy, with a high near 32. Breezy, with a southwest wind 24 to 26 mph, with gusts as high as 39 mph. Total daytime snow accumulation of less than a half inch possible.

    High: 32 °F

    Chance Snow
    and Breezy

  • Tonight

    Tonight: A 30 percent chance of snow, mainly before 7pm. Mostly cloudy, with a low around 23. Breezy, with a west southwest wind 14 to 23 mph, with gusts as high as 32 mph. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Chance Snow
    and Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. Breezy, with a west southwest wind 14 to 19 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 36 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 26. Breezy, with a south southwest wind around 26 mph, with gusts as high as 38 mph.

    Low: 26 °F

    Partly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Snow, mainly after noon. High near 35. Windy, with a south southwest wind 26 to 33 mph, with gusts as high as 49 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 35 °F

    Windy. Chance
    Snow then
    Snow

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Low around 21. Windy, with a south southwest wind 30 to 36 mph, with gusts as high as 49 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 21 °F

    Heavy Snow
    and Windy

  • Thursday

    Thursday: Snow. The snow could be heavy at times. High near 22. West 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 11. Northwest wind 13 to 16 mph, with gusts as high as 30 mph.

    Low: 11 °F

    Snow

  • Friday

    Friday: Snow likely, mainly after noon. Mostly cloudy, with a high near 23.

    High: 23 °F

    Snow Likely

Detailed Forecast

This Afternoon
A 50 percent chance of snow, mainly after 3pm. Mostly cloudy, with a high near 32. Breezy, with a southwest wind 24 to 26 mph, with gusts as high as 39 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
A 30 percent chance of snow, mainly before 7pm. Mostly cloudy, with a low around 23. Breezy, with a west southwest wind 14 to 23 mph, with gusts as high as 32 mph. New snow accumulation of less than a half inch possible.
Tuesday
Mostly sunny, with a high near 36. Breezy, with a west southwest wind 14 to 19 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 37 mph.
Tuesday Night
Partly cloudy, with a low around 26. Breezy, with a south southwest wind around 26 mph, with gusts as high as 38 mph.
Wednesday
Snow, mainly after noon. High near 35. Windy, with a south southwest wind 26 to 33 mph, with gusts as high as 49 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 21. Windy, with a south southwest wind 30 to 36 mph, with gusts as high as 49 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 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 11. Northwest wind 13 to 16 mph, with gusts as high as 30 mph.
Friday
Snow likely, mainly after noon. Mostly cloudy, with a high near 23.
Friday Night
A chance of snow before midnight. Mostly cloudy, with a low around 11.
Saturday
Sunny, with a high near 33.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 40.
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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:
12:31 pm MDT Apr 13, 2026
Forecast Valid:
2pm MDT Apr 13, 2026-6pm MDT Apr 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation