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

39°F

4°C

Humidity 82%
Wind Speed ESE 5 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Wind Chill35°F (2°C)
Last update 13 Mar 12:30 AM MDT
Extended Forecast for

13 Miles ESE Big Sky MT

  • Overnight

    Overnight: A 50 percent chance of snow. Mostly cloudy, with a low around 27. Windy, with a west southwest wind around 33 mph, with gusts as high as 47 mph. Total nighttime snow accumulation of less than one inch possible.

    Low: 27 °F

    Chance Snow
    and Windy

  • Friday

    Friday: Snow likely, mainly after 2pm. Areas of blowing snow before noon, then areas of blowing snow after 2pm. Mostly cloudy, with a high near 34. Windy, with a west southwest wind 33 to 36 mph, with gusts as high as 55 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 34 °F

    Snow Likely
    and Areas
    Blowing Snow

  • Friday Night

    Friday Night: Snow likely. Cloudy, with a low around 28. Windy, with a west southwest wind 28 to 33 mph, with gusts as high as 47 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 28 °F

    Snow Likely
    and Windy

  • Saturday

    Saturday: Snow. The snow could be heavy at times. High near 30. Windy, with a west southwest wind 30 to 32 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

    High: 30 °F

    Heavy Snow
    and Windy

  • Saturday Night

    Saturday Night: Snow, mainly before midnight. Low around 5. Windy, with a northwest wind 27 to 37 mph decreasing to 17 to 27 mph after midnight. Winds could gust as high as 48 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 5 °F

    Snow and
    Windy then
    Chance Snow

  • Sunday

    Sunday: A 30 percent chance of snow, mainly before noon. Partly sunny, with a high near 18. West wind 14 to 17 mph, with gusts as high as 28 mph. New snow accumulation of less than a half inch possible.

    High: 18 °F

    Chance Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 15. South southwest wind 17 to 21 mph, with gusts as high as 26 mph. New snow accumulation of less than one inch possible.

    Low: 15 °F

    Chance Snow

  • Monday

    Monday: Snow likely, mainly before noon. Mostly cloudy, with a high near 33. Breezy, with a south southwest wind around 24 mph, with gusts as high as 34 mph.

    High: 33 °F

    Snow Likely
    and Breezy

  • Monday Night

    Monday Night: A chance of snow. Mostly cloudy, with a low around 32. Breezy.

    Low: 32 °F

    Chance Snow
    and Breezy

Detailed Forecast

Overnight
A 50 percent chance of snow. Mostly cloudy, with a low around 27. Windy, with a west southwest wind around 33 mph, with gusts as high as 47 mph. Total nighttime snow accumulation of less than one inch possible.
Friday
Snow likely, mainly after 2pm. Areas of blowing snow before noon, then areas of blowing snow after 2pm. Mostly cloudy, with a high near 34. Windy, with a west southwest wind 33 to 36 mph, with gusts as high as 55 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Friday Night
Snow likely. Cloudy, with a low around 28. Windy, with a west southwest wind 28 to 33 mph, with gusts as high as 47 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Saturday
Snow. The snow could be heavy at times. High near 30. Windy, with a west southwest wind 30 to 32 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.
Saturday Night
Snow, mainly before midnight. Low around 5. Windy, with a northwest wind 27 to 37 mph decreasing to 17 to 27 mph after midnight. Winds could gust as high as 48 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Sunday
A 30 percent chance of snow, mainly before noon. Partly sunny, with a high near 18. West wind 14 to 17 mph, with gusts as high as 28 mph. New snow accumulation of less than a half inch possible.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 15. South southwest wind 17 to 21 mph, with gusts as high as 26 mph. New snow accumulation of less than one inch possible.
Monday
Snow likely, mainly before noon. Mostly cloudy, with a high near 33. Breezy, with a south southwest wind around 24 mph, with gusts as high as 34 mph.
Monday Night
A chance of snow. Mostly cloudy, with a low around 32. Breezy.
Tuesday
A slight chance of snow before noon. Mostly cloudy, with a high near 42. Breezy.
Tuesday Night
Mostly cloudy, with a low around 33. Breezy.
Wednesday
Partly sunny, with a high near 47. Breezy.
Wednesday Night
Partly cloudy, with a low around 35. Breezy.
Thursday
Mostly sunny, with a high near 51. Breezy.
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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:
12:32 am MDT Mar 13, 2026
Forecast Valid:
12am MDT Mar 13, 2026-6pm MDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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