National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

Lat: 45.34534°NLon: 111.17261°WElev: 5699.0ft.

unknown precip

46°F

8°C

Humidity 58%
Wind Speed NNE 5 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 16 May 03:00 PM MDT
Extended Forecast for

4 Miles E Big Sky MT

Winter Weather Advisory May 16, 05:00pm until May 17, 06:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Rain, possibly mixed with snow showers, becoming all snow after 4pm. Some thunder is also possible. High near 53. Southwest wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 53 °F

    Rain/Snow

  • Tonight

    Tonight: Snow showers before 9pm, then snow, mainly between 9pm and 5am. Some thunder is also possible. Low around 23. Light and variable wind. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 23 °F

    Snow Showers

  • Sunday

    Sunday: Snow likely, mainly after 5pm. Mostly cloudy, with a high near 34. Calm wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 34 °F

    Snow Likely

  • Sunday Night

    Sunday Night: Snow likely, mainly after 4am. Cloudy, with a low around 24. North northeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 24 °F

    Snow Likely

  • Monday

    Monday: A 50 percent chance of snow. Mostly cloudy, with a high near 45. North wind 3 to 5 mph. New snow accumulation of less than one inch possible.

    High: 45 °F

    Chance Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 23. Light north wind.

    Low: 23 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 57. Calm wind.

    High: 57 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of snow before 9am, then a chance of rain and snow showers between 9am and 3pm, then a chance of rain showers after 3pm. Some thunder is also possible. Mostly sunny, with a high near 59.

    High: 59 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Rain, possibly mixed with snow showers, becoming all snow after 4pm. Some thunder is also possible. High near 53. Southwest wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tonight
Snow showers before 9pm, then snow, mainly between 9pm and 5am. Some thunder is also possible. Low around 23. Light and variable wind. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Sunday
Snow likely, mainly after 5pm. Mostly cloudy, with a high near 34. Calm wind becoming north 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
Snow likely, mainly after 4am. Cloudy, with a low around 24. North northeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Monday
A 50 percent chance of snow. Mostly cloudy, with a high near 45. North wind 3 to 5 mph. New snow accumulation of less than one inch possible.
Monday Night
Partly cloudy, with a low around 23. Light north wind.
Tuesday
Mostly sunny, with a high near 57. Calm wind.
Tuesday Night
Partly cloudy, with a low around 29. Calm wind.
Wednesday
A slight chance of snow before 9am, then a chance of rain and snow showers between 9am and 3pm, then a chance of rain showers after 3pm. Some thunder is also possible. Mostly sunny, with a high near 59.
Wednesday Night
A chance of rain before midnight. Mostly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
A slight chance of rain. Partly cloudy, with a low around 36.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 68.
Friday Night
A chance of rain. Partly cloudy, with a low around 37.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Big Sky MT
 45.26°N 111.26°W (Elev. 5997 ft)
Last Update:
12:32 pm MDT May 16, 2026
Forecast Valid:
3pm MDT May 16, 2026-6pm MDT May 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation