Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

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

NA

76°F

24°C

Humidity 40%
Wind Speed NA 3 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Heat Index78°F (26°C)
Last update 22 Aug 01:10 PM MDT
Extended Forecast for

10 Miles SSW St Mary MT

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms before 3pm.  Mostly sunny, with a high near 71. West southwest wind around 7 mph.

    High: 71 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms, then a chance of showers after 2am.  Partly cloudy, with a low around 54. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.

    Low: 54 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 7am.  Patchy smoke between 2pm and 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 60. Breezy, with a west southwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 60 °F

    Slight Chance
    Showers then
    Patchy Smoke
    and Breezy

  • Sunday Night

    Sunday Night: Patchy smoke after 1am. Mostly clear, with a low around 46. Breezy, with a west southwest wind 14 to 24 mph, with gusts as high as 40 mph.

    Low: 46 °F

    Mostly Clear
    and Breezy
    then Patchy
    Smoke

  • Monday

    Monday: Patchy smoke before 7am. Sunny, with a high near 62. West southwest wind around 10 mph, with gusts as high as 18 mph.

    High: 62 °F

    Patchy Smoke
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46. West wind 5 to 8 mph becoming northeast after midnight.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68. Light and variable wind becoming southwest 5 to 7 mph in the morning.

    High: 68 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51. Southwest wind 5 to 8 mph becoming east southeast in the evening.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms before 3pm. Mostly sunny, with a high near 71. West southwest wind around 7 mph.
Tonight
A slight chance of showers and thunderstorms, then a chance of showers after 2am. Partly cloudy, with a low around 54. South southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday
A 20 percent chance of showers before 7am. Patchy smoke between 2pm and 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 60. Breezy, with a west southwest wind 13 to 18 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph.
Sunday Night
Patchy smoke after 1am. Mostly clear, with a low around 46. Breezy, with a west southwest wind 14 to 24 mph, with gusts as high as 40 mph.
Monday
Patchy smoke before 7am. Sunny, with a high near 62. West southwest wind around 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 46. West wind 5 to 8 mph becoming northeast after midnight.
Tuesday
Sunny, with a high near 68. Light and variable wind becoming southwest 5 to 7 mph in the morning.
Tuesday Night
Mostly clear, with a low around 51. Southwest wind 5 to 8 mph becoming east southeast in the evening.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Mostly clear, with a low around 46.
Friday
Sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles SSW St Mary MT
 48.61°N 113.51°W (Elev. 6673 ft)
12:31 pm MDT Aug 22, 2026
2pm MDT Aug 22, 2026-6pm MDT Aug 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database