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Hot Temperatures in the Northwest U.S.; Tropical Rainfall Potential in the Southwest U.S.

Hot to extremely hot temperatures are in place again Thursday across the interior northwest U.S. A combination of monsoonal moisture and tropical moisture ahead of tropical cyclone Lorena will bring a marginal to slight risk of excessive rainfall across the southwest U.S. through Saturday which may bring areas of flooding. Read More >

Hazardous Weather Conditions

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

45°F

7°C

Humidity 72%
Wind Speed NA NA MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 04 Sep 04:10 AM MDT
Extended Forecast for

St Mary MT

  • Today

    Today: A chance of showers between 7am and noon. Widespread haze between 9am and 11am. Areas of smoke before 9am. Partly sunny, with a high near 63. North wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    High: 63 °F

    Chance
    Showers then
    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 37. North northeast wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 73. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. East wind around 6 mph becoming calm in the evening.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77. Calm wind becoming east southeast 5 to 7 mph in the afternoon.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47. East southeast wind 5 to 7 mph becoming light and variable after midnight.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 80. Southwest wind 3 to 7 mph.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 50. West southwest wind around 6 mph.

    Low: 50 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers after noon. Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

Detailed Forecast

Today
A chance of showers between 7am and noon. Widespread haze between 9am and 11am. Areas of smoke before 9am. Partly sunny, with a high near 63. North wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Tonight
Mostly clear, with a low around 37. North northeast wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Friday
Sunny, with a high near 73. Calm wind becoming east southeast around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 42. East wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 77. Calm wind becoming east southeast 5 to 7 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 47. East southeast wind 5 to 7 mph becoming light and variable after midnight.
Sunday
Mostly sunny, with a high near 80. Southwest wind 3 to 7 mph.
Sunday Night
Mostly cloudy, with a low around 50. West southwest wind around 6 mph.
Monday
A slight chance of showers after noon. Mostly sunny, with a high near 76.
Monday Night
A slight chance of showers. Mostly cloudy, with a low around 47.
Tuesday
A chance of showers. Partly sunny, with a high near 69.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 44.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 67.
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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 ft)
Last Update:
2:13 am MDT Sep 4, 2025
Forecast Valid:
5am MDT Sep 4, 2025-6pm MDT Sep 10, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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