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

36°F

2°C

Humidity 94%
Wind Speed S 1 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 12 Apr 06:30 AM MDT
Extended Forecast for

13 Miles ESE Big Sky MT

  • Today

    Today: Snow showers likely, mainly after 3pm. Some thunder is also possible. Partly sunny, with a high near 41. South southwest wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 41 °F

    Mostly Sunny
    then Snow
    Showers
    Likely

  • Tonight

    Tonight: A 40 percent chance of snow, mainly before 3am. Partly cloudy, with a low around 24. Breezy, with a southwest wind 22 to 25 mph, with gusts as high as 32 mph. New snow accumulation of less than one inch possible.

    Low: 24 °F

    Chance Snow
    and Breezy

  • Monday

    Monday: Snow likely, mainly after noon. Mostly cloudy, with a high near 33. Breezy, with a southwest wind 22 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 33 °F

    Breezy.
    Chance Snow
    then Snow
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 25. Southwest wind 13 to 20 mph, with gusts as high as 29 mph. New snow accumulation of less than one inch possible.

    Low: 25 °F

    Chance Snow
    then Partly
    Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 37. Breezy, with a southwest wind 14 to 23 mph, with gusts as high as 33 mph.

    High: 37 °F

    Mostly Sunny
    then Slight
    Chance Snow
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28. Breezy, with a south southwest wind 24 to 28 mph, with gusts as high as 34 mph.

    Low: 28 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Snow, mainly after noon. High near 34. Windy, with a south southwest wind 29 to 31 mph, with gusts as high as 47 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 34 °F

    Windy. Chance
    Snow then
    Snow

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Cloudy, with a low around 21. Breezy, with a south southwest wind 18 to 26 mph, with gusts as high as 48 mph.

    Low: 21 °F

    Heavy Snow
    and Breezy

  • Thursday

    Thursday: Snow. The snow could be heavy at times. Cloudy, with a high near 23.

    High: 23 °F

    Heavy Snow

Detailed Forecast

Today
Snow showers likely, mainly after 3pm. Some thunder is also possible. Partly sunny, with a high near 41. South southwest wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
A 40 percent chance of snow, mainly before 3am. Partly cloudy, with a low around 24. Breezy, with a southwest wind 22 to 25 mph, with gusts as high as 32 mph. New snow accumulation of less than one inch possible.
Monday
Snow likely, mainly after noon. Mostly cloudy, with a high near 33. Breezy, with a southwest wind 22 to 25 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Monday Night
A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 25. Southwest wind 13 to 20 mph, with gusts as high as 29 mph. New snow accumulation of less than one inch possible.
Tuesday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 37. Breezy, with a southwest wind 14 to 23 mph, with gusts as high as 33 mph.
Tuesday Night
Mostly cloudy, with a low around 28. Breezy, with a south southwest wind 24 to 28 mph, with gusts as high as 34 mph.
Wednesday
Snow, mainly after noon. High near 34. Windy, with a south southwest wind 29 to 31 mph, with gusts as high as 47 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow. The snow could be heavy at times. Cloudy, with a low around 21. Breezy, with a south southwest wind 18 to 26 mph, with gusts as high as 48 mph.
Thursday
Snow. The snow could be heavy at times. Cloudy, with a high near 23.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 12.
Friday
A chance of snow. Partly sunny, with a high near 25.
Friday Night
A slight chance of snow. Partly cloudy, with a low around 13.
Saturday
A slight chance of snow. Mostly sunny, with a high near 32.
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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:
3:26 am MDT Apr 12, 2026
Forecast Valid:
6am MDT Apr 12, 2026-6pm MDT Apr 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation