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

Storm Impacting the Southwest U.S.; Above Normal Temperatures Further East

A storm system will shift across the southwest U.S. through Thursday with widespread showers and isolated thunderstorms. Isolated flooding is possible. High-elevation snow is also expected in parts of Nevada and the southern Sierra Nevada range. East of this storm, above average temperatures will challenge or break daily record high temperatures this week in the southern Plains and southeast U.S. Read More >

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

38°F

3°C

Humidity 84%
Wind Speed SE 5 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Wind Chill34°F (1°C)
Last update 18 Nov 09:30 AM MST
Extended Forecast for

12 Miles NE Big Sky MT

  • Today

    Today: Partly sunny, with a high near 42. South southwest wind around 7 mph.

    High: 42 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. South wind 3 to 5 mph.

    Low: 30 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of snow. Mostly cloudy, with a high near 39. Light and variable wind. Little or no snow accumulation expected.

    High: 39 °F

    Chance Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 43. Light and variable wind.

    High: 43 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 43. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

    High: 43 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27. South southwest wind around 6 mph.

    Low: 27 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 42. South southwest wind around 7 mph.
Tonight
Mostly cloudy, with a low around 30. South wind 3 to 5 mph.
Wednesday
A 30 percent chance of snow. Mostly cloudy, with a high near 39. Light and variable wind. Little or no snow accumulation expected.
Wednesday Night
Partly cloudy, with a low around 27. Calm wind.
Thursday
Sunny, with a high near 43. Light and variable wind.
Thursday Night
Mostly clear, with a low around 27. Calm wind.
Friday
Sunny, with a high near 43. Calm wind becoming west southwest 5 to 7 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 27. South southwest wind around 6 mph.
Saturday
Mostly sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 41.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 28.
Monday
A chance of rain and snow. Partly sunny, with a high near 38.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NE Big Sky MT
 45.36°N 111.12°W (Elev. 7451 ft)
Last Update:
8:27 am MST Nov 18, 2025
Forecast Valid:
9am MST Nov 18, 2025-6pm MST Nov 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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