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

28°F

-2°C

Humidity	67%
Wind Speed	SE 8 MPH
Barometer	NA
Dewpoint	18°F (-8°C)
Visibility	NA
Wind Chill	20°F (-7°C)
Last update	02 Dec 01:00 AM 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 until December 3, 05:00am

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory until December 3, 05:00am
NOW until 5:00am Wed
Winter Weather Advisory
Overnight
Low: 21 °F
Snow Likely
Tuesday
High: 36 °F
Snow
Tuesday Night
Low: 13 °F
Snow Likely
Wednesday
High: 35 °F
Decreasing
Clouds
Wednesday Night
Low: 15 °F
Partly Cloudy
Thursday
High: 35 °F
Chance Snow
Thursday Night
Low: 21 °F
Chance Snow
Friday
High: 39 °F
Snow Likely

Detailed Forecast

Overnight

Snow likely, mainly between 2am and 5am. Mostly cloudy, with a low around 21. South southeast wind around 6 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 2 inches possible.

Tuesday

Snow, mainly after 8am. High near 36. South wind around 6 mph becoming light and variable in the morning. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Tuesday Night

Snow likely, mainly after 11pm. Mostly cloudy, with a low around 13. Calm wind. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

Wednesday

Mostly cloudy, then gradually becoming sunny, with a high near 35. Calm wind.

Wednesday Night

Partly cloudy, with a low around 15. South southwest wind 3 to 5 mph.

Thursday

A 30 percent chance of snow after 11am. Partly sunny, with a high near 35. South southwest wind 5 to 7 mph. New snow accumulation of less than one inch possible.

Thursday Night

A 50 percent chance of snow. Mostly cloudy, with a low around 21. South southwest wind 5 to 7 mph. New snow accumulation of 1 to 2 inches possible.

Friday

Snow likely, mainly after 11am. Mostly cloudy, with a high near 39. South southwest wind 5 to 9 mph, with gusts as high as 21 mph.

Friday Night

Snow likely. Mostly cloudy, with a low around 25.

Saturday

Snow likely. Mostly cloudy, with a high near 41.

Saturday Night

A slight chance of snow. Mostly cloudy, with a low around 17.

Sunday

A chance of snow. Mostly cloudy, with a high near 40.