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

36°F

2°C

Humidity 88%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 18 Apr 07:45 PM MDT
Extended Forecast for

12 Miles NE Big Sky MT

  • Tonight

    Tonight: Mostly clear, with a low around 24. South southeast wind 3 to 5 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 56. Light and variable wind.

    High: 56 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34. Light south wind.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 64. Calm wind becoming west 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 5 to 9 mph, with gusts as high as 22 mph.

    High: 67 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41. South wind 6 to 9 mph, with gusts as high as 23 mph.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after noon. Partly sunny, with a high near 57. South wind 7 to 14 mph, with gusts as high as 30 mph.

    High: 57 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain before 9pm, then rain and snow between 9pm and 3am, then snow after 3am. Cloudy, with a low around 28.

    Low: 28 °F

    Rain/Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 24. South southeast wind 3 to 5 mph.
Sunday
Sunny, with a high near 56. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 34. Light south wind.
Monday
Sunny, with a high near 64. Calm wind becoming west 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 5 to 9 mph, with gusts as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 41. South wind 6 to 9 mph, with gusts as high as 23 mph.
Wednesday
Rain likely, mainly after noon. Partly sunny, with a high near 57. South wind 7 to 14 mph, with gusts as high as 30 mph.
Wednesday Night
Rain before 9pm, then rain and snow between 9pm and 3am, then snow after 3am. Cloudy, with a low around 28.
Thursday
Snow. Mostly cloudy, with a high near 37.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 18.
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 20.
Saturday
A slight chance of snow. Partly sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NE Big Sky MT
 45.39°N 111.19°W (Elev. 6998 ft)
Last Update:
2:12 pm MDT Apr 18, 2026
Forecast Valid:
8pm MDT Apr 18, 2026-6pm MDT Apr 25, 2026
 
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Additional Resources

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Chance of Precipitation