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

33°F

1°C

Humidity 66%
Wind Speed SW 1 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Last update 19 Apr 01:15 AM MDT
Extended Forecast for

12 Miles NE Big Sky MT

  • Overnight

    Overnight: Mostly clear, with a low around 24. Light south southeast wind.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57. Light and variable wind.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 34. Light and variable wind.

    Low: 34 °F

    Increasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 64. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 64 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. South wind around 5 mph.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 67. South wind 3 to 8 mph. Winds could gust as high as 21 mph.

    High: 67 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41. South wind around 6 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 56. South southwest wind 5 to 11 mph, with gusts as high as 26 mph.

    High: 56 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain before 9pm, then rain and snow between 9pm and 3am, then snow after 3am. The snow could be heavy at times. Cloudy, with a low around 28.

    Low: 28 °F

    Rain/Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 24. Light south southeast wind.
Sunday
Sunny, with a high near 57. Light and variable wind.
Sunday Night
Increasing clouds, with a low around 34. Light and variable wind.
Monday
Sunny, with a high near 64. Calm wind becoming southwest around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 39. South wind around 5 mph.
Tuesday
Mostly sunny, with a high near 67. South wind 3 to 8 mph. Winds could gust as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 41. South wind around 6 mph, with gusts as high as 21 mph.
Wednesday
A slight chance of rain, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 56. South southwest wind 5 to 11 mph, with gusts as high as 26 mph.
Wednesday Night
Rain before 9pm, then rain and snow between 9pm and 3am, then snow after 3am. The snow could be heavy at times. Cloudy, with a low around 28.
Thursday
Snow, mainly before noon. Mostly cloudy, with a high near 38.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 19.
Friday
A chance of snow. Partly sunny, with a high near 38.
Friday Night
A chance of snow. Mostly cloudy, with a low around 19.
Saturday
A chance of snow. Partly sunny, with a high near 41.
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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:
12:31 am MDT Apr 19, 2026
Forecast Valid:
1am MDT Apr 19, 2026-6pm MDT Apr 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation