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

27°F

-3°C

Humidity 85%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Last update 29 Mar 07:15 AM MDT
Extended Forecast for

14 Miles ESE Big Sky MT

  • Today

    Today: Mostly sunny, with a high near 45. Breezy, with a southwest wind 17 to 26 mph, with gusts as high as 39 mph.

    High: 45 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. Breezy, with a southwest wind 21 to 26 mph, with gusts as high as 38 mph.

    Low: 31 °F

    Mostly Cloudy
    and Breezy

  • Monday

    Monday: Snow, mainly after noon. Temperature rising to near 36 by 11am, then falling to around 29 during the remainder of the day. Windy, with a southwest wind 24 to 32 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 36 °F⇓

    Chance Snow
    and Breezy
    then Snow and
    Windy

  • Monday Night

    Monday Night: A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 15. Blustery, with a west northwest wind 17 to 22 mph becoming north 10 to 15 mph after midnight. Winds could gust as high as 30 mph. New snow accumulation of 1 to 3 inches possible.

    Low: 15 °F

    Chance Snow
    and Blustery
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 34. Northeast wind 8 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.

    High: 34 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 24. South wind 14 to 17 mph, with gusts as high as 24 mph.

    Low: 24 °F

    Slight Chance
    Snow

  • Wednesday

    Wednesday: Snow likely, mainly after noon. Partly sunny, with a high near 36. South southwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Slight Chance
    Snow then
    Snow Likely

  • Wednesday Night

    Wednesday Night: Snow. Cloudy, with a low around 28. Breezy, with a south southwest wind 21 to 23 mph, with gusts as high as 31 mph.

    Low: 28 °F

    Snow and
    Breezy

  • Thursday

    Thursday: Snow. The snow could be heavy at times. Cloudy, with a high near 29. Breezy.

    High: 29 °F

    Heavy Snow
    and Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 45. Breezy, with a southwest wind 17 to 26 mph, with gusts as high as 39 mph.
Tonight
Mostly cloudy, with a low around 31. Breezy, with a southwest wind 21 to 26 mph, with gusts as high as 38 mph.
Monday
Snow, mainly after noon. Temperature rising to near 36 by 11am, then falling to around 29 during the remainder of the day. Windy, with a southwest wind 24 to 32 mph, with gusts as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Monday Night
A 50 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 15. Blustery, with a west northwest wind 17 to 22 mph becoming north 10 to 15 mph after midnight. Winds could gust as high as 30 mph. New snow accumulation of 1 to 3 inches possible.
Tuesday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 34. Northeast wind 8 to 16 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 24. South wind 14 to 17 mph, with gusts as high as 24 mph.
Wednesday
Snow likely, mainly after noon. Partly sunny, with a high near 36. South southwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Wednesday Night
Snow. Cloudy, with a low around 28. Breezy, with a south southwest wind 21 to 23 mph, with gusts as high as 31 mph.
Thursday
Snow. The snow could be heavy at times. Cloudy, with a high near 29. Breezy.
Thursday Night
Snow, mainly before midnight. The snow could be heavy at times. Mostly cloudy, with a low around 16. Breezy.
Friday
Snow likely. Mostly cloudy, with a high near 24.
Friday Night
A chance of snow. Mostly cloudy, with a low around 15.
Saturday
A slight chance of snow. Mostly sunny, with a high near 33.
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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:
3:46 am MDT Mar 29, 2026
Forecast Valid:
7am MDT Mar 29, 2026-6pm MDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation