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The Regional Temperatures and Precipitation Product for the State of Montana (RTPMT) will be discontinued on May 6, 2026.

Hazardous Weather Conditions

Winter Weather Advisory until April 3, 06:00 AM MDT

Current conditions at

ST. MARY (SRYM8)

Lat: 48.74108°NLon: 113.43289°WElev: 4557.0ft.

28°F

-2°C

Humidity	92%
Wind Speed	NNE 2 MPH
Barometer	NA
Dewpoint	26°F (-3°C)
Visibility	NA
Last update	03 Apr 01:11 AM MDT

More Information:

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

Extended Forecast for

7 Miles S St Mary MT

Winter Weather Advisory April 3, 02:12am until April 3, 06:00am

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory April 3, 02:12am until April 3, 06:00am
NOW until 6:00am Fri
Winter Weather Advisory
Overnight
Low: 18 °F
Patchy
Blowing Snow
Friday
High: 27 °F
Patchy
Blowing Snow
and Breezy
then Mostly
Sunny and
Windy
Friday Night
Low: 21 °F
Partly Cloudy
and Windy
Saturday
High: 31 °F
Mostly Sunny
and Breezy
Saturday Night
Low: 21 °F
Partly Cloudy
and Breezy
then Slight
Chance Snow
Sunday
High: 32 °F
Slight Chance
Snow then
Partly Sunny
Sunday Night
Low: 21 °F
Mostly Cloudy
Monday
High: 37 °F
Partly Sunny

Detailed Forecast

Overnight

Patchy blowing snow after 3am. Mostly cloudy, with a low around 18. West northwest wind 15 to 17 mph, with gusts as high as 22 mph.

Friday

Patchy blowing snow before 9am. Mostly sunny, with a high near 27. Windy, with a west wind 20 to 30 mph, with gusts as high as 38 mph.

Friday Night

Partly cloudy, with a low around 21. Windy, with a west southwest wind 29 to 31 mph, with gusts as high as 39 mph.

Saturday

Mostly sunny, with a high near 31. Breezy, with a west wind 25 to 29 mph, with gusts as high as 34 mph.

Saturday Night

A 20 percent chance of snow after midnight. Partly cloudy, with a low around 21. Breezy, with a west wind 20 to 25 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 32 mph.

Sunday

A 20 percent chance of snow before noon. Mostly cloudy, with a high near 32. Southeast wind 13 to 15 mph, with gusts as high as 21 mph.

Sunday Night

Mostly cloudy, with a low around 21. East southeast wind 15 to 17 mph, with gusts as high as 22 mph.

Monday

Partly sunny, with a high near 37. South southeast wind 14 to 20 mph, with gusts as high as 26 mph.

Monday Night

Mostly cloudy, with a low around 30. Breezy.

Tuesday

A slight chance of rain and snow between noon and 3pm, then a slight chance of snow after 3pm. Mostly sunny, with a high near 36. Windy.

Tuesday Night

A chance of snow. Mostly cloudy, with a low around 16. Windy.