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

69°F

21°C

Humidity 37%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 02 Jul 02:15 PM MDT
Extended Forecast for

12 Miles ENE Big Sky MT

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 65. West southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    High: 65 °F

    Chance
    T-storms

  • 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 46. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 46 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 66. Light and variable wind becoming west southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.

    High: 66 °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 47. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 47 °F

    Chance
    Showers then
    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 73. West southwest wind 5 to 9 mph, with gusts as high as 18 mph.

    High: 73 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 53. West southwest wind 5 to 8 mph becoming calm.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 76. South wind 5 to 9 mph becoming west in the afternoon. Winds could gust as high as 18 mph.

    High: 76 °F

    Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54. West wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 65. West southwest wind 7 to 9 mph, with gusts as high as 18 mph.
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 46. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
A 40 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 66. Light and variable wind becoming west southwest 5 to 9 mph in the morning. Winds could gust as high as 18 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 47. West northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Independence Day
Sunny, with a high near 73. West southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Saturday Night
Mostly clear, with a low around 53. West southwest wind 5 to 8 mph becoming calm.
Sunday
Sunny, with a high near 76. South wind 5 to 9 mph becoming west in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54. West wind around 6 mph becoming calm in the evening.
Monday
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76.
Monday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 54.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 74.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles ENE Big Sky MT
 45.34°N 111.12°W (Elev. 7717 ft)
Last Update:
12:31 pm MDT Jul 2, 2026
Forecast Valid:
2pm MDT Jul 2, 2026-6pm MDT Jul 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation