Severe Weather and Heavy Rainfall from the High Plains to the Ohio Valley; Heat Continuing in the Central Plains and Southeast

A stationary front will be the focus for daily showers and thunderstorms capable of widely scattered flash flooding and severe weather from the High Plains to the Ohio Valley. Monsoonal thunderstorms could cause local flash flooding across the Southwest and the Great Basin. Dangerous heat continues across the Central Plains and Southeast. Many areas will see their hottest temperatures of the year. Read More >

Current conditions at

ST. MARY (SRYM8)

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

NA

52°F

11°C

Humidity 99%
Wind Speed N 5 MPH
Barometer NA
Dewpoint 52°F (11°C)
Visibility NA
Last update 12 Aug 11:11 AM MDT
Extended Forecast for

8 Miles SSW St Mary MT

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm.  Patchy smoke. High near 49. East northeast wind 10 to 13 mph, with gusts as high as 18 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 49 °F

    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm.  Low around 42. East northeast wind 10 to 15 mph, with gusts as high as 22 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 42 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm.  High near 46. East northeast wind 9 to 11 mph, with gusts as high as 18 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 46 °F

    Showers

  • Thursday Night

    Thursday Night: Showers.  Low around 40. North northeast wind 8 to 14 mph, with gusts as high as 21 mph.  Chance of precipitation is 80%.

    Low: 40 °F

    Showers

  • Friday

    Friday: A 50 percent chance of showers.  Mostly cloudy, with a high near 49. Northeast wind around 8 mph.

    High: 49 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight.  Mostly cloudy, with a low around 40. North wind 5 to 8 mph.  Chance of precipitation is 20%.

    Low: 40 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 60. Light and variable wind becoming west 5 to 8 mph in the afternoon.

    High: 60 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 46. Southwest wind 5 to 7 mph becoming light and variable  in the evening.

    Low: 46 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Patchy smoke. High near 49. East northeast wind 10 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm. Low around 42. East northeast wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm. High near 46. East northeast wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers. Low around 40. North northeast wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 49. Northeast wind around 8 mph.
Friday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Mostly cloudy, with a low around 40. North wind 5 to 8 mph. Chance of precipitation is 20%.
Saturday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 60. Light and variable wind becoming west 5 to 8 mph in the afternoon.
Saturday Night
Mostly cloudy, with a low around 46. Southwest wind 5 to 7 mph becoming light and variable in the evening.
Sunday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 49.
Monday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 63.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 48.
Tuesday
A slight chance of showers. Partly sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SSW St Mary MT
 48.63°N 113.48°W (Elev. 6801 ft)
10:07 am MDT Aug 12, 2026
12pm MDT Aug 12, 2026-6pm MDT Aug 18, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database