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

74°F

23°C

Humidity 25%
Wind Speed WSW 2 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 03 Jul 04:30 PM MDT
Extended Forecast for

12 Miles NE Big Sky MT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 73. West southwest wind around 6 mph.

    High: 73 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 44. West wind around 5 mph becoming calm in the evening.

    Low: 44 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 80. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50. West wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 49. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 49 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 80. Calm wind becoming north around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 50. Light and variable wind.

    Low: 50 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 78.

    High: 78 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 73. West southwest wind around 6 mph.
Tonight
Mostly clear, with a low around 44. West wind around 5 mph becoming calm in the evening.
Independence Day
Sunny, with a high near 80. Calm wind becoming west 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 50. West wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 82. Calm wind becoming west 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 49. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 80. Calm wind becoming north around 5 mph in the afternoon.
Monday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Mostly cloudy, with a low around 50. Light and variable wind.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 78.
Tuesday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 49.
Thursday
Sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 48.
Friday
Sunny, with a high near 79.
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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:
12:31 pm MDT Jul 3, 2026
Forecast Valid:
4pm MDT Jul 3, 2026-6pm MDT Jul 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation