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SCN26-50: Discontinuation of the State Forecast Product (SFP) for all NWS Central Region, Southern Region, and Western Region Offices: Effective June 29, 2026
The Regional Temperatures and Precipitation Product for the State of Montana (RTPMT) will now be discontinued on July 7, 2026.

Hazardous Weather Conditions

Short Term Forecast

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

59°F

15°C

Humidity	40%
Wind Speed	NA 2 MPH
Barometer	NA
Dewpoint	34°F (1°C)
Visibility	NA
Last update	17 Jun 12:10 PM MDT

More Information:

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

Extended Forecast for

4 Miles W St Mary MT

This Afternoon
High: 52 °F
Chance
Showers
Tonight
Low: 38 °F
Chance
Showers
Thursday
High: 50 °F
Chance
Showers then
Showers
Likely
Thursday Night
Low: 36 °F
Slight Chance
Showers then
Partly Cloudy
Juneteenth
High: 57 °F
Sunny
Friday Night
Low: 42 °F
Partly Cloudy
Saturday
High: 59 °F
Sunny
Saturday Night
Low: 39 °F
Chance
Showers and
Breezy
Sunday
High: 47 °F
Chance
Showers

Detailed Forecast

This Afternoon

A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 52. West northwest wind 8 to 10 mph.

Tonight

A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. North wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 30%.

Thursday

Showers and thunderstorms likely, mainly before 3pm. Increasing clouds, with a high near 50. West wind 5 to 8 mph becoming north northeast in the afternoon. Chance of precipitation is 60%.

Thursday Night

A 20 percent chance of showers before 7pm. Partly cloudy, with a low around 36. North northeast wind 5 to 9 mph becoming south after midnight. Winds could gust as high as 18 mph.

Juneteenth

Sunny, with a high near 57. South southeast wind 6 to 8 mph.

Friday Night

Partly cloudy, with a low around 42. South southeast wind 7 to 9 mph becoming southwest after midnight.

Saturday

Sunny, with a high near 59. West southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 33 mph.

Saturday Night

A chance of showers, mainly before midnight. Mostly cloudy, with a low around 39. Breezy, with a north northwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 34 mph.

Sunday

A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 47.

Sunday Night

A chance of showers before midnight. Mostly cloudy, with a low around 36.

Monday

A chance of showers. Mostly sunny, with a high near 52.

Monday Night

Partly cloudy, with a low around 39.

Tuesday

Sunny, with a high near 60.