National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 >

Hazardous Weather Conditions

Current conditions at

Mexia Limestone County Airport (KLXY)

Lat: 31.64°NLon: 96.51°WElev: 545ft.

Fair

102°F

39°C

Humidity 29%
Wind Speed SW 5 mph
Barometer 30.00 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index105°F (41°C)
Last update 22 Aug 3:15 pm CDT
Extended Forecast for

7 Miles WNW Thornton TX

Heat Advisory August 22, 03:29pm until August 22, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 22, 03:29pm until August 22, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 103 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 79. Calm wind becoming south southwest around 5 mph after midnight.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 104. South southwest wind around 5 mph.

    High: 104 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 78. South wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 104. South southwest wind 5 to 10 mph.

    High: 104 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 77. South wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 103. South southwest wind 5 to 10 mph.

    High: 103 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 77. South wind 5 to 10 mph.

    Low: 77 °F

    Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 103. Heat index values as high as 106. Calm wind.
Tonight
Mostly clear, with a low around 79. Calm wind becoming south southwest around 5 mph after midnight.
Sunday
Mostly sunny and hot, with a high near 104. South southwest wind around 5 mph.
Sunday Night
Mostly clear, with a low around 78. South wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 104. South southwest wind 5 to 10 mph.
Monday Night
Clear, with a low around 77. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 103. South southwest wind 5 to 10 mph.
Tuesday Night
Clear, with a low around 77. South wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 103. Southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Mostly sunny and hot, with a high near 101.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Friday
Mostly sunny and hot, with a high near 99.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles WNW Thornton TX
 31.47°N 96.68°W (Elev. 499 ft)
Last Update:
2:47 pm CDT Aug 22, 2026
Forecast Valid:
3pm CDT Aug 22, 2026-6pm CDT Aug 28, 2026
 
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