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

59°F

15°C

Humidity 23%
Wind Speed ESE 13 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Last update 29 Mar 12:00 PM MDT
Extended Forecast for

14 Miles ESE Big Sky MT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 45. Breezy, with a southwest wind 22 to 24 mph, with gusts as high as 38 mph.

    High: 45 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. Breezy, with a southwest wind 21 to 23 mph, with gusts as high as 36 mph.

    Low: 31 °F

    Mostly Cloudy
    and Breezy

  • Monday

    Monday: Snow likely, mainly after 3pm. The snow could be heavy at times. Increasing clouds, with a temperature rising to near 36 by 11am, then falling to around 29 during the remainder of the day. Breezy, with a southwest wind 20 to 26 mph becoming west northwest in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 36 °F⇓

    Breezy.
    Slight Chance
    Snow then
    Heavy Snow

  • Monday Night

    Monday Night: Snow likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 15. North wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 15 °F

    Snow Likely
    then 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

This Afternoon
Mostly sunny, with a high near 45. Breezy, with a southwest wind 22 to 24 mph, with gusts as high as 38 mph.
Tonight
Mostly cloudy, with a low around 31. Breezy, with a southwest wind 21 to 23 mph, with gusts as high as 36 mph.
Monday
Snow likely, mainly after 3pm. The snow could be heavy at times. Increasing clouds, with a temperature rising to near 36 by 11am, then falling to around 29 during the remainder of the day. Breezy, with a southwest wind 20 to 26 mph becoming west northwest in the afternoon. Winds could gust as high as 41 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Monday Night
Snow likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 15. North wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. 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:
10:22 am MDT Mar 29, 2026
Forecast Valid:
12pm MDT Mar 29, 2026-6pm MDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation