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 59%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 19 Apr 07:45 PM MDT
Extended Forecast for

15 Miles ENE Big Sky MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. Southwest wind 14 to 16 mph, with gusts as high as 22 mph.

    Low: 32 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 50. West southwest wind 13 to 16 mph, with gusts as high as 26 mph.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 36. South southwest wind 16 to 18 mph, with gusts as high as 26 mph.

    Low: 36 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 53. South southwest wind 16 to 21 mph, with gusts as high as 33 mph.

    High: 53 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34. South wind 17 to 20 mph, with gusts as high as 32 mph.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Snow, mainly after noon. High near 41. Breezy, with a south wind 21 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 41 °F

    Breezy.
    Chance Snow
    then Snow

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Low around 23. Southwest wind 14 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.

    Low: 23 °F

    Heavy Snow

  • Thursday

    Thursday: Snow. Mostly cloudy, with a high near 24. Northwest wind around 17 mph, with gusts as high as 32 mph.

    High: 24 °F

    Snow

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 14.

    Low: 14 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 32. Southwest wind 14 to 16 mph, with gusts as high as 22 mph.
Monday
Sunny, with a high near 50. West southwest wind 13 to 16 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 36. South southwest wind 16 to 18 mph, with gusts as high as 26 mph.
Tuesday
Mostly sunny, with a high near 53. South southwest wind 16 to 21 mph, with gusts as high as 33 mph.
Tuesday Night
Mostly cloudy, with a low around 34. South wind 17 to 20 mph, with gusts as high as 32 mph.
Wednesday
Snow, mainly after noon. High near 41. Breezy, with a south wind 21 to 25 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 23. Southwest wind 14 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.
Thursday
Snow. Mostly cloudy, with a high near 24. Northwest wind around 17 mph, with gusts as high as 32 mph.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 14.
Friday
Snow likely, mainly after noon. Partly sunny, with a high near 25.
Friday Night
A chance of snow. Mostly cloudy, with a low around 12.
Saturday
A chance of snow. Partly sunny, with a high near 28.
Saturday Night
A slight chance of snow. Mostly cloudy, with a low around 14.
Sunday
A chance of snow. Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
15 Miles ENE Big Sky MT
 45.32°N 111.05°W (Elev. 8901 ft)
Last Update:
12:31 pm MDT Apr 19, 2026
Forecast Valid:
8pm MDT Apr 19, 2026-6pm MDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation