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

14°F

-10°C

Humidity 91%
Wind Speed N 1 MPH
Barometer NA
Dewpoint 12°F (-11°C)
Visibility NA
Last update 18 Apr 07:30 AM MDT
Extended Forecast for

6 Miles ESE Big Sky MT

  • Today

    Today: Sunny, with a high near 45. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 24. South southeast wind 3 to 7 mph.

    Low: 24 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 54. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34. Southwest wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 61. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38. South wind 3 to 6 mph.

    Low: 38 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 64. Light south wind becoming south southwest 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 40. South wind 5 to 9 mph, with gusts as high as 21 mph.

    Low: 40 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Rain likely before 3pm, then rain and snow likely. Partly sunny, with a high near 53.

    High: 53 °F

    Slight Chance
    Rain then
    Rain/Snow
    Likely

Detailed Forecast

Today
Sunny, with a high near 45. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 18 mph.
Tonight
Partly cloudy, with a low around 24. South southeast wind 3 to 7 mph.
Sunday
Sunny, with a high near 54. Calm wind becoming southwest around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 34. Southwest wind around 5 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 61. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 38. South wind 3 to 6 mph.
Tuesday
Sunny, with a high near 64. Light south wind becoming south southwest 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 40. South wind 5 to 9 mph, with gusts as high as 21 mph.
Wednesday
Rain likely before 3pm, then rain and snow likely. Partly sunny, with a high near 53.
Wednesday Night
Rain and snow likely before midnight, then snow. Mostly cloudy, with a low around 31.
Thursday
Snow. Mostly cloudy, with a high near 39.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 21.
Friday
A chance of snow. Partly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Big Sky MT
 45.24°N 111.22°W (Elev. 7129 ft)
Last Update:
3:47 am MDT Apr 18, 2026
Forecast Valid:
7am MDT Apr 18, 2026-6pm MDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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