National Weather Service

News Headlines

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 16, 12:00 PM MDT

Current conditions at

ST. MARY (SRYM8)

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

38°F

3°C

Humidity	85%
Wind Speed	S 9 MPH
Barometer	NA
Dewpoint	34°F (1°C)
Visibility	NA
Wind Chill	32°F (0°C)
Last update	15 Apr 05:11 PM 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 15, 05:53pm until April 16, 12:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory April 15, 05:53pm until April 16, 12:00pm
NOW until 12:00pm Thu
Winter Weather Advisory
This Afternoon
High: 28 °F
Heavy Snow
and Windy
Tonight
Low: 9 °F
Snow Showers
and Blowing
Snow
Thursday
High: 16 °F
Snow and
Areas Blowing
Snow
Thursday Night
Low: 13 °F
Chance Snow
Showers and
Patchy
Blowing Snow
Friday
High: 24 °F
Chance Snow
Friday Night
Low: 18 °F
Partly Cloudy
Saturday
High: 31 °F
Sunny and
Breezy
Saturday Night
Low: 24 °F
Partly Cloudy

Detailed Forecast

This Afternoon

Snow showers likely. The snow could be heavy at times. Mostly cloudy, with a high near 28. Windy, with a west wind around 31 mph, with gusts as high as 40 mph. Chance of precipitation is 70%. Total daytime snow accumulation of 2 to 4 inches possible.

Tonight

Snow showers, mainly before 8pm, then snow after midnight. Widespread blowing snow, mainly before 4am. Low around 9. Wind chill values as low as -10. Windy, with a west southwest wind 25 to 33 mph, with gusts as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Thursday

Snow before noon, then snow showers likely, mainly between noon and 2pm. Areas of blowing snow. High near 16. Wind chill values as low as -10. Blustery, with a northwest wind 22 to 25 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Thursday Night

A chance of snow showers before midnight, then a slight chance of snow after midnight. Patchy blowing snow before 9pm. Mostly cloudy, with a low around 13. Wind chill values as low as -5. West southwest wind 16 to 21 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

Friday

A 50 percent chance of snow. Partly sunny, with a high near 24. Northwest wind around 17 mph, with gusts as high as 24 mph. New snow accumulation of around an inch possible.

Friday Night

Partly cloudy, with a low around 18. West southwest wind 17 to 21 mph, with gusts as high as 24 mph.

Saturday

Sunny, with a high near 31. Breezy, with a west southwest wind 23 to 25 mph, with gusts as high as 34 mph.

Saturday Night

Partly cloudy, with a low around 24. West southwest wind 15 to 20 mph, with gusts as high as 32 mph.

Sunday

Mostly sunny, with a high near 40.

Sunday Night

Partly cloudy, with a low around 31.

Monday

Mostly sunny, with a high near 46.