Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Current conditions at

Mount Pleasant, Mount Pleasant Regional Airport (KOSA)

Lat: 33.1°NLon: 94.96°WElev: 364ft.

Fair

93°F

34°C

Humidity 48%
Wind Speed E 15 G 22 mph
Barometer 29.94 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 24 Aug 4:10 pm CDT
Extended Forecast for

4 Miles NW Marietta TX

Heat Advisory August 24, 04:36pm until August 24, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory August 24, 04:36pm until August 24, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Tonight

    Low: 77 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms before 10am.  Partly sunny and hot, with a high near 101. Heat index values as high as 106. Southeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 101 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 78. South wind around 5 mph.

    Low: 78 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 100. Heat index values as high as 106. West wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am.  Partly cloudy, with a low around 75. West wind around 5 mph becoming calm.

    Low: 75 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny and hot, with a high near 97.

    High: 97 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 72. Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers before 1pm.  Sunny and hot, with a high near 97.

    High: 97 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 77. South wind 5 to 10 mph.
Tuesday
A 20 percent chance of showers and thunderstorms before 10am. Partly sunny and hot, with a high near 101. Heat index values as high as 106. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Tuesday Night
Increasing clouds, with a low around 78. South wind around 5 mph.
Wednesday
Mostly sunny and hot, with a high near 100. Heat index values as high as 106. West wind 5 to 10 mph.
Wednesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 75. West wind around 5 mph becoming calm.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 97.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Friday
A 20 percent chance of showers before 1pm. Sunny and hot, with a high near 97.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny and hot, with a high near 98.
Saturday Night
Clear, with a low around 73.
Sunday
Sunny and hot, with a high near 98.
Sunday Night
Clear, with a low around 75.
Monday
Sunny and hot, with a high near 98.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Marietta TX
 33.2°N 94.6°W (Elev. 397 ft)
2:06 pm CDT Aug 24, 2026
4pm CDT Aug 24, 2026-6pm CDT Aug 31, 2026
 
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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