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 10, 12:00 AM MST until December 10, 11:00 AM MST
Winter Storm Watch in effect from December 11, 02:00 PM MST until December 13, 05:00 AM MST

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

Lat: 48.74111°NLon: 113.43306°WElev: 4550.0ft.

36°F

2°C

Humidity	49%
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	18°F (-8°C)
Visibility	NA
Last update	09 Dec 06:10 PM MST

More Information:

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

Extended Forecast for

4 Miles SW St Mary MT

Winter Storm Watch December 11, 02:00pm until December 13, 05:00am

Winter Weather Advisory December 10, 12:00am until December 10, 11:00am

Click here for hazard details and duration

Winter Storm Watch

Winter Weather Advisory

Tonight
Low: 29 °F
Chance Snow
then Snow
Wednesday
High: 44 °F
Breezy.
Rain/Snow
then Rain
Wednesday Night
Low: 35 °F
Breezy. Rain
then
Rain/Snow
Thursday
High: 41 °F
Rain/Snow and
Breezy then
Snow
Thursday Night
Low: 14 °F
Snow Likely
Friday
High: 29 °F
Snow
Friday Night
Low: 12 °F
Heavy Snow
Saturday
High: 32 °F
Chance Snow
Saturday Night
Low: 28 °F
Chance Snow

Detailed Forecast

Tonight

Snow, mainly after 3am. Low around 29. Southwest wind 13 to 18 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.

Wednesday

Rain and snow, becoming all rain after 10am. High near 44. Breezy, with a west southwest wind 26 to 29 mph, with gusts as high as 60 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

Wednesday Night

Rain before 2am, then rain, possibly mixed with snow. Low around 35. Breezy, with a west southwest wind 22 to 24 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday

Rain and snow, becoming all snow after 11am. High near 41. Breezy, with a west northwest wind 18 to 23 mph decreasing to 11 to 16 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

Thursday Night

Snow likely, mainly before 11pm. Mostly cloudy, with a low around 14. Northwest wind 6 to 8 mph becoming east northeast after midnight. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

Friday

Snow. High near 29. East southeast wind 5 to 9 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.

Friday Night

Snow likely. The snow could be heavy at times. Mostly cloudy, with a low around 12. West wind 9 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of 3 to 5 inches possible.

Saturday

A chance of snow. Partly sunny, with a high near 32. West southwest wind 7 to 11 mph, with gusts as high as 22 mph.

Saturday Night

A chance of snow, mainly after 11pm. Mostly cloudy, with a low around 28.

Sunday

A chance of snow before 11am, then a chance of rain and snow. Partly sunny, with a high near 40.

Sunday Night

A chance of rain and snow. Mostly cloudy, with a low around 31.

Monday

A chance of rain and snow. Partly sunny, with a high near 39.

Monday Night

A chance of rain and snow. Mostly cloudy, with a low around 31. Breezy.