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

57°F

14°C

Humidity 44%
Wind Speed NNW 4 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 18 Oct 05:30 PM MDT
Extended Forecast for

11 Miles NE Big Sky MT

  • Tonight

    Tonight: Mostly clear, with a low around 31. Calm wind becoming south around 6 mph in the evening.

    Low: 31 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 65. South wind 3 to 6 mph.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. South wind 3 to 7 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 63. Light and variable wind.

    High: 63 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 65. Calm wind becoming south around 5 mph in the afternoon.

    High: 65 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 34. Calm wind becoming south 5 to 7 mph.

    Low: 34 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 64. Calm wind becoming south 5 to 7 mph in the morning. Winds could gust as high as 18 mph.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 33.

    Low: 33 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 31. Calm wind becoming south around 6 mph in the evening.
Monday
Sunny, with a high near 65. South wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 32. South wind 3 to 7 mph.
Tuesday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 63. Light and variable wind.
Tuesday Night
Partly cloudy, with a low around 32. Calm wind.
Wednesday
Mostly sunny, with a high near 65. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 34. Calm wind becoming south 5 to 7 mph.
Thursday
Mostly sunny, with a high near 64. Calm wind becoming south 5 to 7 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 33.
Friday
Rain before noon, then rain and snow. Cloudy, with a high near 45.
Friday Night
Rain and snow likely. Mostly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
A slight chance of rain and snow. Partly cloudy, with a low around 25.
Sunday
A slight chance of rain and snow. Mostly sunny, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NE Big Sky MT
 45.37°N 111.18°W (Elev. 6453 ft)
Last Update:
12:31 pm MDT Oct 18, 2026
Forecast Valid:
5pm MDT Oct 18, 2026-6pm MDT Oct 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation