Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Rockwall Municipal Airport (KF46)

Lat: 32.93°NLon: 96.43°WElev: 564ft.

Fair

98°F

37°C

Humidity 32%
Wind Speed NE 9 G 16 mph
Barometer 29.92 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 27 Aug 5:55 pm CDT
Extended Forecast for

2 Miles NNW Lavon TX

Heat Advisory August 27, 06:05pm until August 27, 08:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory August 27, 06:05pm until August 27, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Tonight

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 98. Heat index values as high as 102. East northeast wind around 5 mph.

    High: 98 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. East wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 98. Heat index values as high as 103. South southeast wind around 5 mph.

    High: 98 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 98. South wind around 10 mph.

    High: 98 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 77. Southeast wind 5 to 10 mph.

    Low: 77 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 97. South wind around 10 mph.

    High: 97 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 76. East northeast wind 5 to 10 mph becoming southeast after midnight.
Friday
Sunny, with a high near 98. Heat index values as high as 102. East northeast wind around 5 mph.
Friday Night
Mostly clear, with a low around 76. East wind around 5 mph.
Saturday
Sunny, with a high near 98. Heat index values as high as 103. South southeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 98. South wind around 10 mph.
Sunday Night
Clear, with a low around 77. Southeast wind 5 to 10 mph.
Monday
Sunny, with a high near 97. South wind around 10 mph.
Monday Night
Mostly clear, with a low around 78. South southeast wind around 10 mph.
Tuesday
Sunny, with a high near 97.
Tuesday Night
Clear, with a low around 77.
Wednesday
Sunny, with a high near 98.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
Sunny, with a high near 98.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Lavon TX
 33.05°N 96.46°W (Elev. 499 ft)
5:16 pm CDT Aug 27, 2026
6pm CDT Aug 27, 2026-6pm CDT Sep 3, 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