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 Watch in effect from December 12, 12:00 AM MST until December 13, 05:00 AM MST
Winter Weather Advisory in effect from December 11, 09:00 AM MST until December 11, 11:00 PM MST

Current conditions at

USCRN SITE NEAR LEWISTOWN 42WSW (JRWM8)

Lat: 46.88472°NLon: 110.28944°WElev: 5045.0ft.

52°F

11°C

Humidity	43%
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	30°F (-1°C)
Visibility	NA
Last update	10 Dec 10:00 PM MST

More Information:

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

Extended Forecast for

7 Miles SW Windham MT

Winter Storm Watch December 12, 12:00am until December 13, 05:00am

Winter Weather Advisory December 11, 09:00am until December 11, 11:00pm

Click here for hazard details and duration

Winter Storm Watch

Winter Weather Advisory

Tonight
Low: 50 °F
Slight Chance
Rain and
Windy
Thursday
High: 49 °F⇓
Rain and
Windy then
Rain/Snow and
Breezy
Thursday Night
Low: 14 °F
Snow
Friday
High: 31 °F
Snow
Friday Night
Low: 14 °F
Chance Snow
Saturday
High: 42 °F
Slight Chance
Snow then
Partly Sunny
Saturday Night
Low: 31 °F
Partly Cloudy
Sunday
High: 51 °F
Partly Sunny
Sunday Night
Low: 35 °F
Mostly Cloudy

Detailed Forecast

Tonight

A 20 percent chance of rain. Mostly cloudy, with a steady temperature around 50. Windy, with a west wind 37 to 39 mph, with gusts as high as 60 mph.

Thursday

Rain before 2pm, then snow. Temperature falling to around 30 by 5pm. Windy, with a west wind 29 to 34 mph becoming north northwest 18 to 23 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Thursday Night

Snow. Low around 14. Northeast wind 5 to 8 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Friday

Snow. High near 31. Light and variable wind becoming east southeast 5 to 10 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

Friday Night

A 50 percent chance of snow. Mostly cloudy, with a low around 14. Southwest wind 9 to 13 mph becoming west northwest after midnight. Winds could gust as high as 24 mph. New snow accumulation of less than one inch possible.

Saturday

A 20 percent chance of snow before 11am. Partly sunny, with a high near 42. Northwest wind 9 to 13 mph becoming south southwest in the morning. Winds could gust as high as 22 mph.

Saturday Night

Partly cloudy, with a low around 31. Southwest wind 13 to 16 mph, with gusts as high as 24 mph.

Sunday

Partly sunny, with a high near 51. Southwest wind 14 to 16 mph, with gusts as high as 25 mph.

Sunday Night

Mostly cloudy, with a low around 35.

Monday

Partly sunny, with a high near 51.

Monday Night

Mostly cloudy, with a low around 37. Breezy.

Tuesday

A slight chance of rain and snow. Mostly sunny, with a high near 47. Breezy.