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

69°F

21°C

Humidity 13%
Wind Speed SSE 13 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Last update 17 Oct 03:45 PM MDT
Extended Forecast for

5 Miles NNE Big Sky MT

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. Southwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 31 mph.

    Low: 32 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 49. Southwest wind 5 to 8 mph.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. South southwest wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 33 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 51. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. South wind 8 to 14 mph, with gusts as high as 22 mph.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 50. South southeast wind 5 to 9 mph.

    High: 50 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35. Calm wind becoming south southeast around 5 mph after midnight.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 51. South southeast wind 6 to 8 mph.

    High: 51 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 32. Southwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 31 mph.
Sunday
Mostly sunny, with a high near 49. Southwest wind 5 to 8 mph.
Sunday Night
Partly cloudy, with a low around 33. South southwest wind 6 to 11 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 51. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Monday Night
Partly cloudy, with a low around 35. South wind 8 to 14 mph, with gusts as high as 22 mph.
Tuesday
Mostly sunny, with a high near 50. South southeast wind 5 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 35. Calm wind becoming south southeast around 5 mph after midnight.
Wednesday
Mostly sunny, with a high near 51. South southeast wind 6 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
A chance of rain after noon. Mostly sunny, with a high near 51.
Thursday Night
Rain likely. Mostly cloudy, with a low around 36.
Friday
Rain and snow. Cloudy, with a high near 41.
Friday Night
Rain and snow likely. Mostly cloudy, with a low around 30.
Saturday
A chance of snow. Partly sunny, with a high near 37.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNE Big Sky MT
 45.32°N 111.27°W (Elev. 8399 ft)
Last Update:
12:31 pm MDT Oct 17, 2026
Forecast Valid:
4pm MDT Oct 17, 2026-6pm MDT Oct 24, 2026
 
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