National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

16°C

60°F

Humidity 49%
Wind Speed NA 13 MPH
Barometer NA
Dewpoint 5°C (41°F)
Visibility NA
Last update 09 Sep 01:10 PM MDT
Extended Forecast for

St Mary MT

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 17. West southwest wind around 26 km/h, with gusts as high as 55 km/h.

    High: 17 °C

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 9. Southwest wind 24 to 27 km/h, with gusts as high as 60 km/h.

    Low: 9 °C

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 19. Breezy, with a west southwest wind 26 to 35 km/h, with gusts as high as 75 km/h.

    High: 19 °C

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Showers likely, mainly after 3am. Cloudy, with a low around 3. West wind 18 to 23 km/h becoming light and variable after midnight. Winds could gust as high as 42 km/h. Chance of precipitation is 60%.

    Low: 3 °C

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 10. North northeast wind 3 to 8 km/h. Chance of precipitation is 90%.

    High: 10 °C

    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after midnight. Cloudy, with a low around 1. Northeast wind 5 to 8 km/h. Chance of precipitation is 70%.

    Low: 1 °C

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers. High near 8. East northeast wind 8 to 11 km/h. Chance of precipitation is 80%.

    High: 8 °C

    Showers

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 0. East northeast wind around 10 km/h.

    Low: 0 °C

    Showers
    Likely

  • Sunday

    Sunday: Showers likely. Cloudy, with a high near 8.

    High: 8 °C

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 17. West southwest wind around 26 km/h, with gusts as high as 55 km/h.
Tonight
Mostly cloudy, with a low around 9. Southwest wind 24 to 27 km/h, with gusts as high as 60 km/h.
Thursday
Mostly sunny, with a high near 19. Breezy, with a west southwest wind 26 to 35 km/h, with gusts as high as 75 km/h.
Thursday Night
Showers likely, mainly after 3am. Cloudy, with a low around 3. West wind 18 to 23 km/h becoming light and variable after midnight. Winds could gust as high as 42 km/h. Chance of precipitation is 60%.
Friday
Showers and possibly a thunderstorm. High near 10. North northeast wind 3 to 8 km/h. Chance of precipitation is 90%.
Friday Night
Showers likely, mainly after midnight. Cloudy, with a low around 1. Northeast wind 5 to 8 km/h. Chance of precipitation is 70%.
Saturday
Showers. High near 8. East northeast wind 8 to 11 km/h. Chance of precipitation is 80%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 0. East northeast wind around 10 km/h.
Sunday
Showers likely. Cloudy, with a high near 8.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 0.
Monday
A slight chance of showers. Mostly sunny, with a high near 11.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 1.
Tuesday
A chance of showers. Partly sunny, with a high near 11.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 m)
Last Update:
12:31 pm MDT Sep 9, 2026
Forecast Valid:
1pm MDT Sep 9, 2026-6pm MDT Sep 15, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation