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

32°F

0°C

Humidity NA
Wind Speed W 0 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Last update NA
Extended Forecast for

15 Miles ENE Big Sky MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 24. South wind around 21 mph, with gusts as high as 30 mph.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of snow between 9am and 1pm, then snow showers likely after 1pm. Some thunder is also possible. Increasing clouds, with a high near 32. Breezy, with a southwest wind 20 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 32 °F

    Breezy.
    Chance Snow
    then Snow
    Showers
    Likely

  • Monday Night

    Monday Night: A 50 percent chance of snow before midnight. Mostly cloudy, with a low around 24. West southwest wind 11 to 18 mph, with gusts as high as 30 mph. New snow accumulation of 1 to 3 inches possible.

    Low: 24 °F

    Chance Snow
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 36. Southwest wind 11 to 20 mph, with gusts as high as 32 mph.

    High: 36 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 27. Breezy, with a south southwest wind around 22 mph, with gusts as high as 33 mph.

    Low: 27 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Snow, mainly after noon. High near 35. Breezy, with a south southwest wind 22 to 29 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 35 °F

    Breezy.
    Chance Snow
    then Snow

  • Wednesday Night

    Wednesday Night: Snow. The snow could be heavy at times. Low around 19. Breezy, with a south southwest wind 15 to 24 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    Low: 19 °F

    Heavy Snow
    and Breezy

  • Thursday

    Thursday: Snow. The snow could be heavy at times. Cloudy, with a high near 21. West northwest wind 13 to 17 mph, with gusts as high as 31 mph.

    High: 21 °F

    Heavy Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 11.

    Low: 11 °F

    Snow Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 24. South wind around 21 mph, with gusts as high as 30 mph.
Monday
A chance of snow between 9am and 1pm, then snow showers likely after 1pm. Some thunder is also possible. Increasing clouds, with a high near 32. Breezy, with a southwest wind 20 to 23 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Monday Night
A 50 percent chance of snow before midnight. Mostly cloudy, with a low around 24. West southwest wind 11 to 18 mph, with gusts as high as 30 mph. New snow accumulation of 1 to 3 inches possible.
Tuesday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 36. Southwest wind 11 to 20 mph, with gusts as high as 32 mph.
Tuesday Night
Mostly cloudy, with a low around 27. Breezy, with a south southwest wind around 22 mph, with gusts as high as 33 mph.
Wednesday
Snow, mainly after noon. High near 35. Breezy, with a south southwest wind 22 to 29 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Wednesday Night
Snow. The snow could be heavy at times. Low around 19. Breezy, with a south southwest wind 15 to 24 mph, with gusts as high as 44 mph. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Thursday
Snow. The snow could be heavy at times. Cloudy, with a high near 21. West northwest wind 13 to 17 mph, with gusts as high as 31 mph.
Thursday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 11.
Friday
A chance of snow. Partly sunny, with a high near 23.
Friday Night
A slight chance of snow. Partly cloudy, with a low around 12.
Saturday
A slight chance of snow. Mostly sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 39.
Basemap Options
Click map to change the forecast location
Loading map...
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:
9:37 pm MDT Apr 12, 2026
Forecast Valid:
11pm MDT Apr 12, 2026-6pm MDT Apr 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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