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

60°F

16°C

Humidity 28%
Wind Speed SSE 14 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Last update 11 Apr 11:45 AM MDT
Extended Forecast for

12 Miles NE Big Sky MT

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 59. South wind around 10 mph, with gusts as high as 26 mph.

    High: 59 °F

    Chance
    Showers

  • Tonight

    Tonight: Rain likely, possibly mixed with snow showers, mainly before 10pm. Some thunder is also possible. Mostly cloudy, with a low around 33. South wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 33 °F

    Rain/Snow
    Likely then
    Partly Cloudy

  • Sunday

    Sunday: Rain showers likely before 5pm, then rain and snow showers likely. Some thunder is also possible. Partly sunny, with a high near 54. Calm wind becoming south 5 to 7 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 54 °F

    Partly Sunny
    then
    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: A chance of rain showers before 9pm, then a chance of rain and snow between 9pm and midnight, then a chance of snow after midnight. Some thunder is also possible. Mostly cloudy, with a low around 31. South wind around 6 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Monday

    Monday: Snow, mainly between noon and 3pm, then snow showers after 3pm. Some thunder is also possible. High near 47. South southwest wind 5 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 47 °F

    Chance Snow
    then Snow

  • Monday Night

    Monday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 28. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 28 °F

    Snow Likely
    then Chance
    Snow

  • Tuesday

    Tuesday: A 40 percent chance of snow. Partly sunny, with a high near 48. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 22 mph. New snow accumulation of less than a half inch possible.

    High: 48 °F

    Chance Snow

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 30. South wind 5 to 8 mph, with gusts as high as 22 mph.

    Low: 30 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of snow before 9am, then rain and snow likely. Mostly cloudy, with a high near 47.

    High: 47 °F

    Rain/Snow
    Likely

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 59. South wind around 10 mph, with gusts as high as 26 mph.
Tonight
Rain likely, possibly mixed with snow showers, mainly before 10pm. Some thunder is also possible. Mostly cloudy, with a low around 33. South wind 5 to 8 mph becoming calm in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday
Rain showers likely before 5pm, then rain and snow showers likely. Some thunder is also possible. Partly sunny, with a high near 54. Calm wind becoming south 5 to 7 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday Night
A chance of rain showers before 9pm, then a chance of rain and snow between 9pm and midnight, then a chance of snow after midnight. Some thunder is also possible. Mostly cloudy, with a low around 31. South wind around 6 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Monday
Snow, mainly between noon and 3pm, then snow showers after 3pm. Some thunder is also possible. High near 47. South southwest wind 5 to 8 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 28. West southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Tuesday
A 40 percent chance of snow. Partly sunny, with a high near 48. Calm wind becoming west southwest 5 to 9 mph in the afternoon. Winds could gust as high as 22 mph. New snow accumulation of less than a half inch possible.
Tuesday Night
Partly cloudy, with a low around 30. South wind 5 to 8 mph, with gusts as high as 22 mph.
Wednesday
A chance of snow before 9am, then rain and snow likely. Mostly cloudy, with a high near 47.
Wednesday Night
Rain and snow, becoming all snow after midnight. Cloudy, with a low around 24.
Thursday
Snow. Cloudy, with a high near 36.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 16.
Friday
A chance of snow. Partly sunny, with a high near 37.
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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:
10:22 am MDT Apr 11, 2026
Forecast Valid:
12pm MDT Apr 11, 2026-6pm MDT Apr 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation