National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

We are hiring an entry level meteorologist! Applications will be accepted through January 29.

Read More >

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

Lat: 45.34534°NLon: 111.17261°WElev: 5699.0ft.

unknown precip

0°F

-18°C

Humidity 76%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint -6°F (-21°C)
Visibility NA
Last update 24 Jan 10:15 AM MST
Extended Forecast for

12 Miles NE Big Sky MT

  • Today

    Today: Snow likely, mainly after 5pm. Mostly cloudy, with a high near 18. Calm wind becoming northwest around 5 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 18 °F

    Snow Likely

  • Tonight

    Tonight: Snow likely. Mostly cloudy, with a low around 2. Calm wind. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.

    Low: 2 °F

    Snow Likely

  • Sunday

    Sunday: A 20 percent chance of snow before 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 19. Calm wind.

    High: 19 °F

    Slight Chance
    Snow then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 6. Wind chill values as low as -5. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 6 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 33. South wind around 7 mph, with gusts as high as 18 mph.

    High: 33 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17. South southwest wind around 6 mph.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34. South southwest wind around 6 mph.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 15. Light south wind.

    Low: 15 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

Detailed Forecast

Today
Snow likely, mainly after 5pm. Mostly cloudy, with a high near 18. Calm wind becoming northwest around 5 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow likely. Mostly cloudy, with a low around 2. Calm wind. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.
Sunday
A 20 percent chance of snow before 11am. Mostly cloudy through mid morning, then gradual clearing, with a high near 19. Calm wind.
Sunday Night
Mostly clear, with a low around 6. Wind chill values as low as -5. Calm wind becoming south southwest around 6 mph after midnight.
Monday
Sunny, with a high near 33. South wind around 7 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 17. South southwest wind around 6 mph.
Tuesday
Mostly sunny, with a high near 34. South southwest wind around 6 mph.
Tuesday Night
Mostly clear, with a low around 15. Light south wind.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Partly cloudy, with a low around 19.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Partly cloudy, with a low around 19.
Friday
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:
12 Miles NE Big Sky MT
 45.39°N 111.19°W (Elev. 6998 ft)
Last Update:
9:23 am MST Jan 24, 2026
Forecast Valid:
10am MST Jan 24, 2026-6pm MST Jan 30, 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