PNS25-72: Soliciting Comments through December 19, 2025 on the Discontinuation of the Max/Min Temperature and Precipitation Table Product (RTP) for all NWS Alaska Region, Eastern Region, and Western Region Offices.

Read More >

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

20°F

-7°C

Humidity 69%
Wind Speed NW 2 MPH
Barometer NA
Dewpoint 11°F (-12°C)
Visibility NA
Last update 01 Dec 10:30 AM MST
Extended Forecast for

4 Miles E Big Sky MT

Winter Weather Advisory December 1, 11:00pm until December 3, 05:00am
Click here for hazard details and duration
Winter Weather Advisory
  • Today

    Today: A 30 percent chance of snow after 5pm.  Partly sunny, with a high near 36. South wind 3 to 8 mph.  Total daytime snow accumulation of less than a half inch possible.

    High: 36 °F

    Mostly Sunny
    then Chance
    Snow

  • Tonight

    Tonight: Snow likely, mainly after 4am.  Mostly cloudy, with a low around 21. South southeast wind around 7 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 21 °F

    Snow Likely

  • Tuesday

    Tuesday: Snow.  High near 36. Southwest wind 3 to 6 mph.  Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 36 °F

    Snow

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow before 11pm.  Mostly cloudy, with a low around 13. Calm wind.  New snow accumulation of less than one inch possible.

    Low: 13 °F

    Chance Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34. Calm wind.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 14. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 14 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after 11am.  Partly sunny, with a high near 36. South southwest wind around 6 mph.

    High: 36 °F

    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A chance of snow.  Mostly cloudy, with a low around 20. South southwest wind 3 to 6 mph.

    Low: 20 °F

    Chance Snow

  • Friday

    Friday: A chance of snow.  Mostly cloudy, with a high near 39.

    High: 39 °F

    Chance Snow

Detailed Forecast

Today
A 30 percent chance of snow after 5pm. Partly sunny, with a high near 36. South wind 3 to 8 mph. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow likely, mainly after 4am. Mostly cloudy, with a low around 21. South southeast wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Snow. High near 36. Southwest wind 3 to 6 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Tuesday Night
A 50 percent chance of snow before 11pm. Mostly cloudy, with a low around 13. Calm wind. New snow accumulation of less than one inch possible.
Wednesday
Mostly sunny, with a high near 34. Calm wind.
Wednesday Night
Partly cloudy, with a low around 14. Calm wind becoming south southwest around 5 mph after midnight.
Thursday
A 20 percent chance of snow after 11am. Partly sunny, with a high near 36. South southwest wind around 6 mph.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 20. South southwest wind 3 to 6 mph.
Friday
A chance of snow. Mostly cloudy, with a high near 39.
Friday Night
A chance of snow. Mostly cloudy, with a low around 24.
Saturday
Snow likely. Mostly cloudy, with a high near 39.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 20.
Sunday
A slight chance of snow. Partly sunny, with a high near 38.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Big Sky MT
 45.26°N 111.26°W (Elev. 5997 ft)
10:12 am MST Dec 1, 2025
10am MST Dec 1, 2025-6pm MST Dec 7, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database