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

59°F

15°C

Humidity 21%
Wind Speed WNW 3 MPH
Barometer NA
Dewpoint 19°F (-7°C)
Visibility NA
Last update 01 May 12:30 PM MDT
Extended Forecast for

6 Miles ESE Big Sky MT

  • This Afternoon

    This Afternoon: Sunny, with a high near 58. Calm wind becoming west northwest around 5 mph.

    High: 58 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 33. Light and variable wind becoming south around 6 mph after midnight.

    Low: 33 °F

    Clear

  • Saturday

    Saturday: A 20 percent chance of rain after 3pm. Increasing clouds, with a high near 60. South wind around 5 mph becoming calm in the afternoon.

    High: 60 °F

    Sunny then
    Slight Chance
    Rain

  • Saturday Night

    Saturday Night: A 30 percent chance of rain before 9pm. Mostly cloudy, with a low around 37. Light and variable wind.

    Low: 37 °F

    Chance Rain
    then Mostly
    Cloudy

  • Sunday

    Sunday: A 30 percent chance of rain after noon. Partly sunny, with a high near 61. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 61 °F

    Partly Sunny
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 37. North northwest wind around 5 mph becoming calm in the evening.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of rain before 9am, then a slight chance of rain and snow between 9am and noon, then a chance of rain after noon. Mostly sunny, with a high near 55. Calm wind becoming north 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 55 °F

    Slight Chance
    Rain/Snow
    then Chance
    Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 31. North wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 21 mph.

    Low: 31 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of snow, mainly after noon. Mostly sunny, with a high near 49.

    High: 49 °F

    Chance Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 58. Calm wind becoming west northwest around 5 mph.
Tonight
Clear, with a low around 33. Light and variable wind becoming south around 6 mph after midnight.
Saturday
A 20 percent chance of rain after 3pm. Increasing clouds, with a high near 60. South wind around 5 mph becoming calm in the afternoon.
Saturday Night
A 30 percent chance of rain before 9pm. Mostly cloudy, with a low around 37. Light and variable wind.
Sunday
A 30 percent chance of rain after noon. Partly sunny, with a high near 61. Calm wind becoming northwest around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 37. North northwest wind around 5 mph becoming calm in the evening.
Monday
A slight chance of rain before 9am, then a slight chance of rain and snow between 9am and noon, then a chance of rain after noon. Mostly sunny, with a high near 55. Calm wind becoming north 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Monday Night
Partly cloudy, with a low around 31. North wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 21 mph.
Tuesday
A chance of snow, mainly after noon. Mostly sunny, with a high near 49.
Tuesday Night
Partly cloudy, with a low around 31.
Wednesday
Sunny, with a high near 56.
Wednesday Night
Mostly clear, with a low around 37.
Thursday
Sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Big Sky MT
 45.24°N 111.22°W (Elev. 7129 ft)
Last Update:
12:32 pm MDT May 1, 2026
Forecast Valid:
12pm MDT May 1, 2026-6pm MDT May 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation