Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

Current conditions at

ST. MARY (SRYM8)

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

NA

67°F

19°C

Humidity 44%
Wind Speed S 7 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 27 Aug 12:11 AM MDT
Extended Forecast for

St Mary MT

  • Overnight

    Overnight: Patchy smoke after 5am. Mostly cloudy, with a low around 55. South southwest wind around 5 mph.

    Low: 55 °F

    Patchy Smoke

  • Thursday

    Thursday: A slight chance of showers and thunderstorms between 4pm and 5pm.  Patchy smoke before noon. Mostly cloudy, with a high near 83. South southwest wind 5 to 10 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.

    High: 83 °F

    Patchy Smoke
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Patchy smoke between 8pm and midnight. Mostly clear, with a low around 50. South southwest wind 6 to 9 mph, with gusts as high as 22 mph.

    Low: 50 °F

    Patchy Smoke
    then Mostly
    Clear

  • Friday

    Friday: Patchy smoke after 9am. Sunny, with a high near 72. Southwest wind 6 to 11 mph, with gusts as high as 25 mph.

    High: 72 °F

    Patchy Smoke

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45. West southwest wind 5 to 10 mph becoming light southwest  after midnight. Winds could gust as high as 23 mph.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 67. Light west southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after midnight.  Partly cloudy, with a low around 41. West southwest wind 6 to 9 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers.  Partly sunny, with a high near 60. West southwest wind 7 to 13 mph, with gusts as high as 25 mph.

    High: 60 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers before midnight.  Partly cloudy, with a low around 39.

    Low: 39 °F

    Slight Chance
    Showers then
    Mostly Clear

Detailed Forecast

Overnight
Patchy smoke after 5am. Mostly cloudy, with a low around 55. South southwest wind around 5 mph.
Thursday
A slight chance of showers and thunderstorms between 4pm and 5pm. Patchy smoke before noon. Mostly cloudy, with a high near 83. South southwest wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Thursday Night
Patchy smoke between 8pm and midnight. Mostly clear, with a low around 50. South southwest wind 6 to 9 mph, with gusts as high as 22 mph.
Friday
Patchy smoke after 9am. Sunny, with a high near 72. Southwest wind 6 to 11 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 45. West southwest wind 5 to 10 mph becoming light southwest after midnight. Winds could gust as high as 23 mph.
Saturday
Mostly sunny, with a high near 67. Light west southwest wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 23 mph.
Saturday Night
A 30 percent chance of showers, mainly after midnight. Partly cloudy, with a low around 41. West southwest wind 6 to 9 mph, with gusts as high as 21 mph.
Sunday
A chance of showers. Partly sunny, with a high near 60. West southwest wind 7 to 13 mph, with gusts as high as 25 mph.
Sunday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 39.
Monday
Sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
St Mary MT
 48.74°N 113.44°W (Elev. 4554 ft)
11:51 pm MDT Aug 26, 2026
12am MDT Aug 27, 2026-6pm MDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database