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

33°F

1°C

Humidity 99%
Wind Speed S 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 03 Apr 08:30 PM MDT
Extended Forecast for

15 Miles ENE Big Sky MT

  • Tonight

    Tonight: Partly cloudy, with a low around 18. West wind 13 to 15 mph, with gusts as high as 21 mph.

    Low: 18 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 36. West wind around 15 mph, with gusts as high as 25 mph.

    High: 36 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 23. West southwest wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 23 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 42. South southwest wind 9 to 13 mph, with gusts as high as 18 mph.

    High: 42 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 26. West wind around 10 mph becoming south southwest after midnight.

    Low: 26 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 44. Southwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 44 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 29. Southwest wind around 11 mph, with gusts as high as 22 mph.

    Low: 29 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of snow after noon. Mostly sunny, with a high near 44. Breezy, with a southwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 43 mph.

    High: 44 °F

    Mostly Sunny
    then Slight
    Chance Snow
    and Breezy

  • Tuesday Night

    Tuesday Night: A chance of snow. Mostly cloudy, with a low around 23. Breezy.

    Low: 23 °F

    Chance Snow
    and Breezy

Detailed Forecast

Tonight
Partly cloudy, with a low around 18. West wind 13 to 15 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 36. West wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 23. West southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 42. South southwest wind 9 to 13 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 26. West wind around 10 mph becoming south southwest after midnight.
Monday
Partly sunny, with a high near 44. Southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 29. Southwest wind around 11 mph, with gusts as high as 22 mph.
Tuesday
A slight chance of snow after noon. Mostly sunny, with a high near 44. Breezy, with a southwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 43 mph.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 23. Breezy.
Wednesday
Snow likely, mainly after noon. Partly sunny, with a high near 32.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 18.
Thursday
Snow likely. Mostly cloudy, with a high near 28.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 17.
Friday
A chance of snow. Partly sunny, with a high near 34.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles ENE Big Sky MT
 45.32°N 111.05°W (Elev. 8901 ft)
Last Update:
6:36 pm MDT Apr 3, 2026
Forecast Valid:
8pm MDT Apr 3, 2026-6pm MDT Apr 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation