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

65°F

18°C

Humidity 66%
Wind Speed SSW 0 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Last update 02 Jul 07:00 PM MDT
Extended Forecast for

15 Miles ESE Big Sky MT

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Partly cloudy, with a low around 40. Southwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 60. Southwest wind 7 to 14 mph, with gusts as high as 23 mph.

    High: 60 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 42. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 42 °F

    Chance
    Showers then
    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 65. West southwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 47. South southwest wind 8 to 13 mph, with gusts as high as 23 mph.

    Low: 47 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 68. South wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49. West wind 6 to 9 mph becoming north in the evening. Winds could gust as high as 20 mph.

    Low: 49 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Southeast wind 5 to 8 mph.

    High: 69 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

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

    Low: 50 °F

    Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 11pm. Partly cloudy, with a low around 40. Southwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 60. Southwest wind 7 to 14 mph, with gusts as high as 23 mph.
Friday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Partly cloudy, with a low around 42. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Independence Day
Sunny, with a high near 65. West southwest wind 8 to 13 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 47. South southwest wind 8 to 13 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 68. South wind 8 to 11 mph, with gusts as high as 22 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49. West wind 6 to 9 mph becoming north in the evening. Winds could gust as high as 20 mph.
Monday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Southeast wind 5 to 8 mph.
Monday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 50.
Tuesday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 67.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 67.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 49.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 67.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles ESE Big Sky MT
 45.17°N 111.06°W (Elev. 8999 ft)
Last Update:
4:32 pm MDT Jul 2, 2026
Forecast Valid:
7pm MDT Jul 2, 2026-6pm MDT Jul 9, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation