Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Rockwall Municipal Airport (KF46)

Lat: 32.93°NLon: 96.43°WElev: 564ft.

Fair

84°F

29°C

Humidity 59%
Wind Speed SW 9 mph
Barometer 29.94 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 20 Aug 4:15 am CDT
Extended Forecast for

2 Miles SE Rockwall TX

Extreme Heat Warning August 20, 04:25am until August 20, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 20, 04:25am until August 20, 08:00pm

    NOW until 8:00pm Thu

    Extreme Heat Warning

  • Today

    High: 105 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 80. South southeast wind around 5 mph.

    Low: 80 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny and hot, with a high near 105. Heat index values as high as 112. South wind around 5 mph becoming west southwest in the afternoon.

    High: 105 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 10 percent chance of showers and thunderstorms before 10pm.  Mostly clear, with a low around 79. South wind around 5 mph.

    Low: 79 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 105. Southwest wind around 5 mph.

    High: 105 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78. South wind around 5 mph.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 105. Southwest wind around 5 mph.

    High: 105 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 80. Southeast wind around 10 mph.

    Low: 80 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 105. Heat index values as high as 111. Southwest wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 80. South southeast wind around 5 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 105. Heat index values as high as 112. South wind around 5 mph becoming west southwest in the afternoon.
Friday Night
A 10 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 79. South wind around 5 mph.
Saturday
Sunny and hot, with a high near 105. Southwest wind around 5 mph.
Saturday Night
Mostly clear, with a low around 78. South wind around 5 mph.
Sunday
Sunny and hot, with a high near 105. Southwest wind around 5 mph.
Sunday Night
Mostly clear, with a low around 80. Southeast wind around 10 mph.
Monday
Sunny and hot, with a high near 104. South southwest wind around 10 mph.
Monday Night
Mostly clear, with a low around 80.
Tuesday
Sunny and hot, with a high near 104.
Tuesday Night
Mostly clear, with a low around 79.
Wednesday
Sunny and hot, with a high near 103.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Rockwall TX
 32.9°N 96.43°W (Elev. 577 ft)
1:26 am CDT Aug 20, 2026
4am CDT Aug 20, 2026-6pm CDT Aug 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database