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.

Hazardous Weather Conditions

Winter Storm Warning until December 6, 09:00 PM MST

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

34°F

1°C

Humidity	83%
Wind Speed	ESE 3 MPH
Barometer	NA
Dewpoint	29°F (-2°C)
Visibility	NA
Last update	06 Dec 12:15 PM MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

14 Miles NE Big Sky MT

Winter Storm Warning December 6, 12:35pm until December 6, 09:00pm

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning December 6, 12:35pm until December 6, 09:00pm
NOW until 9:00pm Sat
Winter Storm Warning
This Afternoon
High: 30 °F⇓
Snow
Tonight
Low: 18 °F
Chance Snow
Sunday
High: 30 °F
Slight Chance
Snow
Sunday Night
Low: 24 °F
Chance Snow
then Slight
Chance Snow
Monday
High: 34 °F
Slight Chance
Snow
Monday Night
Low: 30 °F
Chance Snow
Tuesday
High: 39 °F
Snow
Tuesday Night
Low: 29 °F
Snow Likely

Detailed Forecast

This Afternoon

Snow, mainly before 5pm. Temperature falling to around 25 by 5pm. West wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. Total daytime snow accumulation of around an inch possible.

Tonight

A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 18. West southwest wind around 10 mph, with gusts as high as 21 mph. New snow accumulation of less than a half inch possible.

Sunday

A 20 percent chance of snow after 11am. Partly sunny, with a high near 30. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.

Sunday Night

A 50 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 24. Southwest wind 11 to 14 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.

Monday

A 20 percent chance of snow after 11am. Mostly cloudy, with a high near 34. Southwest wind around 11 mph, with gusts as high as 22 mph.

Monday Night

A 40 percent chance of snow. Cloudy, with a low around 30. South southwest wind 14 to 17 mph, with gusts as high as 28 mph. New snow accumulation of less than a half inch possible.

Tuesday

Snow. High near 39. West wind 14 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Tuesday Night

Snow likely. Cloudy, with a low around 29. Southwest wind 9 to 13 mph, with gusts as high as 24 mph.

Wednesday

Snow. Mostly cloudy, with a high near 40.

Wednesday Night

Snow likely, mainly before 11pm. Mostly cloudy, with a low around 29.

Thursday

A chance of snow. Mostly cloudy, with a high near 35.

Thursday Night

A chance of snow. Mostly cloudy, with a low around 22.

Friday

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