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

46°F

8°C

Humidity 38%
Wind Speed SE 5 MPH
Barometer NA
Dewpoint 22°F (-6°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 19 Apr 10:45 AM MDT
Extended Forecast for

14 Miles ESE Big Sky MT

  • Today

    Today: Sunny, with a high near 42. South southwest wind around 14 mph, with gusts as high as 22 mph.

    High: 42 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 30. Southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 30 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 49. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.

    High: 49 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 32. South southwest wind around 17 mph, with gusts as high as 25 mph.

    Low: 32 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 51. South wind 15 to 20 mph, with gusts as high as 32 mph.

    High: 51 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 35. South wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 35 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A slight chance of snow before noon, then snow showers likely after noon. Some thunder is also possible. Partly sunny, with a high near 40. Breezy, with a south wind 18 to 24 mph, with gusts as high as 38 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Breezy.
    Slight Chance
    Snow then
    Snow Showers
    Likely

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Cloudy, with a low around 23. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 34 mph.

    Low: 23 °F

    Heavy Snow
    and Breezy

  • Thursday

    Thursday: Snow. Mostly cloudy, with a high near 26. Blustery.

    High: 26 °F

    Snow and
    Blustery

Detailed Forecast

Today
Sunny, with a high near 42. South southwest wind around 14 mph, with gusts as high as 22 mph.
Tonight
Increasing clouds, with a low around 30. Southwest wind around 15 mph, with gusts as high as 20 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 49. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 32. South southwest wind around 17 mph, with gusts as high as 25 mph.
Tuesday
Mostly sunny, with a high near 51. South wind 15 to 20 mph, with gusts as high as 32 mph.
Tuesday Night
A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 35. South wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of snow before noon, then snow showers likely after noon. Some thunder is also possible. Partly sunny, with a high near 40. Breezy, with a south wind 18 to 24 mph, with gusts as high as 38 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow. The snow could be heavy at times. Cloudy, with a low around 23. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 34 mph.
Thursday
Snow. Mostly cloudy, with a high near 26. Blustery.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 14.
Friday
A chance of snow. Partly sunny, with a high near 26.
Friday Night
A chance of snow. Partly cloudy, with a low around 15.
Saturday
A chance of snow. Partly sunny, with a high near 30.
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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:
3:32 am MDT Apr 19, 2026
Forecast Valid:
11am MDT Apr 19, 2026-6pm MDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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