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

36°F

2°C

Humidity 43%
Wind Speed ESE 0 MPH
Barometer NA
Dewpoint 15°F (-9°C)
Visibility NA
Last update 28 Mar 10:30 AM MDT
Extended Forecast for

6 Miles ESE Big Sky MT

  • Today

    Today: Mostly sunny, with a high near 58. Light and variable wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 58 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. South southwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 37 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 54. Light south wind becoming southwest 11 to 16 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 54 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain before 3am, then a chance of rain and snow. Mostly cloudy, with a low around 36. Southwest wind 6 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 36 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Monday

    Monday: Snow. High near 44. Southwest wind 6 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Snow

  • Monday Night

    Monday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 17. West northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Chance Snow

  • Tuesday

    Tuesday: A 20 percent chance of snow before noon. Mostly sunny, with a high near 42. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 42 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 27. South wind 3 to 6 mph.

    Low: 27 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of snow before 3pm, then a chance of rain. Partly sunny, with a high near 49.

    High: 49 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

Detailed Forecast

Today
Mostly sunny, with a high near 58. Light and variable wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 23 mph.
Tonight
Mostly cloudy, with a low around 37. South southwest wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Sunday
Partly sunny, with a high near 54. Light south wind becoming southwest 11 to 16 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
A chance of rain before 3am, then a chance of rain and snow. Mostly cloudy, with a low around 36. Southwest wind 6 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Monday
Snow. High near 44. Southwest wind 6 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 17. West northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 21 mph. New snow accumulation of less than a half inch possible.
Tuesday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 42. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 27. South wind 3 to 6 mph.
Wednesday
A chance of snow before 3pm, then a chance of rain. Partly sunny, with a high near 49.
Wednesday Night
Rain and snow likely, becoming all snow after midnight. Mostly cloudy, with a low around 32.
Thursday
Snow. Cloudy, with a high near 40.
Thursday Night
Snow likely. Mostly cloudy, with a low around 21.
Friday
A chance of snow. Mostly cloudy, with a high near 35.
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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:
3:17 am MDT Mar 28, 2026
Forecast Valid:
10am MDT Mar 28, 2026-6pm MDT Apr 3, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation