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 Weather Advisory in effect from December 1, 11:00 PM MST until December 3, 05:00 AM MST

Current conditions at

Karst US-191 MP 55.3 (MTKAR)

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

unknown precip

26°F

-3°C

Humidity	57%
Wind Speed	NW 8 MPH
Barometer	NA
Dewpoint	13°F (-11°C)
Visibility	NA
Wind Chill	18°F (-8°C)
Last update	30 Nov 01:00 PM MST

More Information:

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

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

This Afternoon
High: 33 °F
Sunny
Tonight
Low: 9 °F
Partly Cloudy
Monday
High: 36 °F
Increasing
Clouds
Monday Night
Low: 20 °F
Chance Snow
Tuesday
High: 36 °F
Snow
Tuesday Night
Low: 15 °F
Chance Snow
then Slight
Chance Snow
Wednesday
High: 33 °F
Mostly Sunny
Wednesday Night
Low: 13 °F
Partly Cloudy
Thursday
High: 36 °F
Partly Sunny

Detailed Forecast

This Afternoon

Sunny, with a high near 33. Calm wind.

Tonight

Partly cloudy, with a low around 9. Calm wind.

Monday

Increasing clouds, with a high near 36. Calm wind becoming west southwest 5 to 7 mph in the afternoon.

Monday Night

A 40 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 20. South wind 6 to 8 mph, with gusts as high as 21 mph. New snow accumulation of around an inch possible.

Tuesday

Snow. High near 36. South wind around 6 mph becoming light and variable. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Tuesday Night

A 50 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 15. Calm wind. New snow accumulation of less than one inch possible.

Wednesday

Mostly sunny, with a high near 33. Calm wind.

Wednesday Night

Partly cloudy, with a low around 13. Calm wind becoming south southwest around 5 mph.

Thursday

Partly sunny, with a high near 36.

Thursday Night

A chance of snow. Mostly cloudy, with a low around 20.

Friday

A chance of snow. Mostly cloudy, with a high near 38.

Friday Night

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