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.

NA

68°F

20°C

Humidity 15%
Wind Speed SSE 13 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Last update 17 Oct 03:00 PM MDT
Extended Forecast for

9 Miles NNE Big Sky MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. South southwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 34 mph.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 54. South southwest wind 5 to 8 mph becoming calm in the afternoon.

    High: 54 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 38. South wind 5 to 15 mph, with gusts as high as 24 mph.

    Low: 38 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 56. South wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. South wind 6 to 14 mph, with gusts as high as 24 mph.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 55. South wind 5 to 10 mph becoming light.

    High: 55 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38. Calm wind becoming south around 6 mph in the evening.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 56. South wind 5 to 9 mph becoming light. Winds could gust as high as 18 mph.

    High: 56 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 36. South southwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 34 mph.
Sunday
Mostly sunny, with a high near 54. South southwest wind 5 to 8 mph becoming calm in the afternoon.
Sunday Night
Partly cloudy, with a low around 38. South wind 5 to 15 mph, with gusts as high as 24 mph.
Monday
Sunny, with a high near 56. South wind 7 to 14 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 40. South wind 6 to 14 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 55. South wind 5 to 10 mph becoming light.
Tuesday Night
Partly cloudy, with a low around 38. Calm wind becoming south around 6 mph in the evening.
Wednesday
Mostly sunny, with a high near 56. South wind 5 to 9 mph becoming light. Winds could gust as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
A slight chance of rain after noon. Mostly sunny, with a high near 56.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40.
Friday
Rain and snow. Cloudy, with a high near 45.
Friday Night
Rain and snow likely. Mostly cloudy, with a low around 32.
Saturday
A chance of snow. Partly 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:
9 Miles NNE Big Sky MT
 45.37°N 111.24°W (Elev. 7198 ft)
Last Update:
12:31 pm MDT Oct 17, 2026
Forecast Valid:
3pm MDT Oct 17, 2026-6pm MDT Oct 24, 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