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

48°F

9°C

Humidity 35%
Wind Speed SE 9 MPH
Barometer NA
Dewpoint 21°F (-6°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 18 Apr 03:30 PM MDT
Extended Forecast for

6 Miles ESE Big Sky MT

  • Tonight

    Tonight: Mostly clear, with a low around 24. South southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 24 °F

    Mostly Clear

  • 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 35. South wind 3 to 5 mph.

    Low: 35 °F

    Partly Cloudy

  • Monday

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

    High: 61 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. South wind 3 to 6 mph.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly 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 23 mph.

    High: 64 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41. South wind 5 to 10 mph, with gusts as high as 24 mph.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Rain likely before 3pm, then rain and snow likely. Partly sunny, with a high near 54. South southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 54 °F

    Slight Chance
    Rain then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Rain and snow, becoming all snow after midnight. Cloudy, with a low around 29.

    Low: 29 °F

    Rain/Snow
    then Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 24. South southwest wind 5 to 7 mph becoming calm in the evening.
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 35. South wind 3 to 5 mph.
Monday
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 39. South wind 3 to 6 mph.
Tuesday
Mostly 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 23 mph.
Tuesday Night
Partly cloudy, with a low around 41. South wind 5 to 10 mph, with gusts as high as 24 mph.
Wednesday
Rain likely before 3pm, then rain and snow likely. Partly sunny, with a high near 54. South southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 29 mph.
Wednesday Night
Rain and snow, becoming all snow after midnight. Cloudy, with a low around 29.
Thursday
Snow. Mostly cloudy, with a high near 36.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 19.
Friday
A chance of snow. Partly sunny, with a high near 39.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 21.
Saturday
A slight chance of snow. Partly sunny, with a high near 42.
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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:
2:12 pm MDT Apr 18, 2026
Forecast Valid:
3pm MDT Apr 18, 2026-6pm MDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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