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.

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

40°F

4°C

Humidity	53%
Wind Speed	NA NA MPH
Barometer	NA
Dewpoint	24°F (-4°C)
Visibility	NA
Last update	20 Nov 09:10 PM MST

More Information:

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

Extended Forecast for

St Mary MT

Tonight
Low: 32 °F
Partly Cloudy
Friday
High: 40 °F
Mostly Sunny
Friday Night
Low: 32 °F
Mostly Cloudy
and Breezy
then Mostly
Cloudy
Saturday
High: 43 °F
Partly Sunny
Saturday Night
Low: 34 °F
Mostly Cloudy
Sunday
High: 45 °F
Slight Chance
Rain/Snow
Sunday Night
Low: 27 °F
Chance
Rain/Snow
Monday
High: 36 °F
Snow Likely
Monday Night
Low: 19 °F
Snow Likely

Detailed Forecast

Tonight

Partly cloudy, with a low around 32. Southwest wind 14 to 17 mph, with gusts as high as 39 mph.

Friday

Mostly sunny, with a high near 40. Southwest wind 18 to 21 mph, with gusts as high as 46 mph.

Friday Night

Mostly cloudy, with a low around 32. Breezy, with a west southwest wind 17 to 22 mph, with gusts as high as 47 mph.

Saturday

Partly sunny, with a high near 43. West southwest wind around 15 mph, with gusts as high as 36 mph.

Saturday Night

Mostly cloudy, with a low around 34. Southwest wind around 14 mph, with gusts as high as 31 mph.

Sunday

A slight chance of rain and snow between 11am and 2pm, then a slight chance of rain after 2pm. Mostly sunny, with a high near 45. West southwest wind 11 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

Sunday Night

A chance of rain before 8pm, then a chance of rain and snow between 8pm and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 27. West southwest wind 10 to 13 mph, with gusts as high as 34 mph. Chance of precipitation is 50%. New snow accumulation of around an inch possible.

Monday

Snow likely. Mostly cloudy, with a high near 36. West southwest wind around 15 mph, with gusts as high as 38 mph.

Monday Night

Snow likely, mainly before 11pm. Mostly cloudy, with a low around 19.

Tuesday

A chance of snow, mainly before 11am. Partly sunny, with a high near 31.

Tuesday Night

Mostly cloudy, with a low around 17.

Wednesday

A slight chance of snow. Partly sunny, with a high near 31.

Wednesday Night

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