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

39°F

4°C

Humidity 61%
Wind Speed N 2 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Last update 15 Apr 01:00 AM MDT
Extended Forecast for

12 Miles NE Big Sky MT

Winter Storm Watch April 15, 06:00pm until April 17, 12:00am
Click here for hazard details and duration
Winter Storm Watch

  • Overnight

    Overnight: Mostly cloudy, with a low around 31. South wind around 6 mph.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of snow before noon, then rain and snow likely between noon and 3pm, then rain likely after 3pm. Partly sunny, with a high near 49. South southeast wind 6 to 15 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 49 °F

    Slight Chance
    Snow then
    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Snow showers likely, possibly mixed with rain before 10pm, then snow. The snow could be heavy at times. Some thunder is also possible. Low around 21. South southwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    Low: 21 °F

    Rain/Snow
    then Heavy
    Snow

  • Thursday

    Thursday: Snow. High near 30. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 30 °F

    Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 15. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 15 °F

    Snow Likely
    then Slight
    Chance Snow

  • Friday

    Friday: Snow likely, mainly after noon. Mostly cloudy, with a high near 34. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 34 °F

    Snow Likely

  • Friday Night

    Friday Night: A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 16. North northwest wind around 5 mph becoming calm in the evening. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Chance Snow
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 45. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 45 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 31. South wind around 6 mph.
Wednesday
A slight chance of snow before noon, then rain and snow likely between noon and 3pm, then rain likely after 3pm. Partly sunny, with a high near 49. South southeast wind 6 to 15 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday Night
Snow showers likely, possibly mixed with rain before 10pm, then snow. The snow could be heavy at times. Some thunder is also possible. Low around 21. South southwest wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Thursday
Snow. High near 30. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Thursday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 15. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Friday
Snow likely, mainly after noon. Mostly cloudy, with a high near 34. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Friday Night
A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 16. North northwest wind around 5 mph becoming calm in the evening. New snow accumulation of less than a half inch possible.
Saturday
Sunny, with a high near 45. Calm wind becoming west southwest around 6 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 60.
Monday Night
A slight chance of rain. Partly cloudy, with a low around 35.
Tuesday
A chance of rain and snow. Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NE Big Sky MT
 45.39°N 111.19°W (Elev. 6998 ft)
Last Update:
12:31 am MDT Apr 15, 2026
Forecast Valid:
1am MDT Apr 15, 2026-6pm MDT Apr 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation