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

27°F

-3°C

Humidity 95%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 29 Jan 09:15 PM MST
Extended Forecast for

4 Miles E Big Sky MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 19. Calm wind.

    Low: 19 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of snow after 11am, mixing with rain after 3pm. Mostly cloudy, with a high near 41. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 41 °F

    Slight Chance
    Snow then
    Slight Chance
    Rain/Snow

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 24. South wind 3 to 5 mph.

    Low: 24 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 47. Light southwest wind.

    High: 47 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 23. Calm wind.

    Low: 23 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 50. Light south wind.

    High: 50 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 25. Light south wind.

    Low: 25 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of snow. Mostly sunny, with a high near 43. Light west wind.

    High: 43 °F

    Slight Chance
    Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 20.

    Low: 20 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 19. Calm wind.
Friday
A slight chance of snow after 11am, mixing with rain after 3pm. Mostly cloudy, with a high near 41. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 24. South wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 47. Light southwest wind.
Saturday Night
Mostly cloudy, with a low around 23. Calm wind.
Sunday
Partly sunny, with a high near 50. Light south wind.
Sunday Night
Mostly cloudy, with a low around 25. Light south wind.
Monday
A slight chance of snow. Mostly sunny, with a high near 43. Light west wind.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
Mostly sunny, with a high near 48.
Wednesday Night
Partly cloudy, with a low around 24.
Thursday
Sunny, with a high near 53.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Big Sky MT
 45.26°N 111.26°W (Elev. 5997 ft)
Last Update:
7:57 pm MST Jan 29, 2026
Forecast Valid:
9pm MST Jan 29, 2026-6pm MST Feb 5, 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