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

Rockwall Municipal Airport (KF46)

Lat: 32.93°NLon: 96.43°WElev: 564ft.

Fair

92°F

33°C

Humidity 46%
Wind Speed E 6 mph
Barometer 29.97 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 21 Aug 8:55 pm CDT
Extended Forecast for

6 Miles SSE Royse City TX

Extreme Heat Warning August 21, 09:03pm until August 22, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 21, 09:03pm until August 22, 08:00pm

    NOW until 8:00pm Sat

    Extreme Heat Warning

  • Tonight

    Low: 78 °F

    Partly Cloudy

  • Saturday

    Saturday: A 10 percent chance of showers and thunderstorms after 4pm.  Mostly sunny and hot, with a high near 106. South wind around 5 mph becoming west northwest in the afternoon.

    High: 106 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 10pm.  Partly cloudy, with a low around 79. South southeast wind around 5 mph.

    Low: 79 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 106. Heat index values as high as 112. South southwest wind 5 to 10 mph.

    High: 106 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 81. South southeast wind 5 to 10 mph.

    Low: 81 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 106. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 106 °F

    Hot

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am.  Mostly clear, with a low around 80. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 80 °F

    Clear then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: Sunny and hot, with a high near 106. South southwest wind 10 to 15 mph.

    High: 106 °F

    Hot

Detailed Forecast

Tonight
Partly cloudy, with a low around 78. Southeast wind around 5 mph.
Saturday
A 10 percent chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 106. South wind around 5 mph becoming west northwest in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 79. South southeast wind around 5 mph.
Sunday
Sunny and hot, with a high near 106. Heat index values as high as 112. South southwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 81. South southeast wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 106. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 80. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
Sunny and hot, with a high near 106. South southwest wind 10 to 15 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 80. South wind around 10 mph.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny and hot, with a high near 104. Chance of precipitation is 20%.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 77.
Thursday
Sunny and hot, with a high near 102.
Thursday Night
Mostly clear, with a low around 76.
Friday
Sunny and hot, with a high near 102.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSE Royse City TX
 32.9°N 96.29°W (Elev. 502 ft)
6:27 pm CDT Aug 21, 2026
9pm CDT Aug 21, 2026-6pm CDT Aug 28, 2026
 
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Additional Resources

Radar & Satellite Image

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