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

Heavy Snow in the Sierra Nevada; Heavy Rainfall in Texas Sunday

Heavy snow is expected in the Sierra Nevada mountain ranges into Saturday causing hazardous travel conditions. Winter Storm Warnings have been issued. Thunderstorms and moderate to heavy rainfall are expected across portions of eastern Texas into Louisiana on Sunday. Read More >

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

NA

53°F

12°C

Humidity 47%
Wind Speed SE 9 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 14 Nov 01:30 PM MST
Extended Forecast for

15 Miles ESE Big Sky MT

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 36. South southwest wind around 13 mph, with gusts as high as 22 mph.

    High: 36 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 28. Breezy, with a south southwest wind 15 to 20 mph increasing to 24 to 29 mph after midnight. Winds could gust as high as 40 mph.

    Low: 28 °F

    Partly Cloudy
    and Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 33. Breezy, with a south southwest wind 16 to 24 mph, with gusts as high as 33 mph.

    High: 33 °F

    Mostly Sunny
    and Breezy
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 28. South southwest wind 18 to 21 mph, with gusts as high as 31 mph.

    Low: 28 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, with a high near 35. South wind 16 to 18 mph, with gusts as high as 28 mph.

    High: 35 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 29. South wind 10 to 16 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance Snow

  • Tuesday

    Tuesday: Snow. High near 31. South southeast wind 6 to 10 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

    High: 31 °F

    Snow

  • Tuesday Night

    Tuesday Night: Snow. Mostly cloudy, with a low around 22. South southwest wind 6 to 8 mph.

    Low: 22 °F

    Snow

  • Wednesday

    Wednesday: A slight chance of snow before 11am. Mostly sunny, with a high near 24.

    High: 24 °F

    Slight Chance
    Snow then
    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 36. South southwest wind around 13 mph, with gusts as high as 22 mph.
Tonight
Partly cloudy, with a low around 28. Breezy, with a south southwest wind 15 to 20 mph increasing to 24 to 29 mph after midnight. Winds could gust as high as 40 mph.
Sunday
Mostly sunny, with a high near 33. Breezy, with a south southwest wind 16 to 24 mph, with gusts as high as 33 mph.
Sunday Night
Increasing clouds, with a low around 28. South southwest wind 18 to 21 mph, with gusts as high as 31 mph.
Monday
Partly sunny, with a high near 35. South wind 16 to 18 mph, with gusts as high as 28 mph.
Monday Night
A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 29. South wind 10 to 16 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.
Tuesday
Snow. High near 31. South southeast wind 6 to 10 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Tuesday Night
Snow. Mostly cloudy, with a low around 22. South southwest wind 6 to 8 mph.
Wednesday
A slight chance of snow before 11am. Mostly sunny, with a high near 24.
Wednesday Night
A slight chance of snow after 11pm. Mostly cloudy, with a low around 19.
Thursday
A chance of snow. Mostly cloudy, with a high near 27.
Thursday Night
Snow likely. Mostly cloudy, with a low around 21.
Friday
Snow likely. Mostly cloudy, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
15 Miles ESE Big Sky MT
 45.17°N 111.06°W (Elev. 8999 ft)
Last Update:
11:31 am MST Nov 14, 2026
Forecast Valid:
1pm MST Nov 14, 2026-6pm MST Nov 20, 2026
 
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Additional Resources

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Chance of Precipitation