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Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Hazardous Weather Conditions

Current conditions at

Rockwall Municipal Airport (KF46)

Lat: 32.93°NLon: 96.43°WElev: 564ft.

Fair

84°F

29°C

Humidity 66%
Wind Speed S 9 mph
Barometer 30.03 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 25 Jul 12:55 am CDT
Extended Forecast for

Lavon TX

Heat Advisory July 25, 12:00pm until July 25, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around 78. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 97. Heat index values as high as 106. South southwest wind around 10 mph.

    High: 97 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 78. South wind 5 to 10 mph.

    Low: 78 °F

    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 99. Heat index values as high as 107. South southwest wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 79. South wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. South southwest wind around 10 mph.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 79. South wind 5 to 10 mph.

    Low: 79 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 79. South wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 78. South wind around 10 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 97. Heat index values as high as 106. South southwest wind around 10 mph.
Saturday Night
Clear, with a low around 78. South wind 5 to 10 mph.
Sunday
Sunny and hot, with a high near 99. Heat index values as high as 107. South southwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 99. South southwest wind around 10 mph.
Monday Night
Clear, with a low around 79. South wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 100.
Wednesday Night
Mostly clear, with a low around 80.
Thursday
Mostly sunny and hot, with a high near 101.
Thursday Night
Mostly clear, with a low around 80.
Friday
Mostly sunny and hot, with a high near 100.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lavon TX
 33.03°N 96.43°W (Elev. 525 ft)
Last Update:
12:26 am CDT Jul 25, 2026
Forecast Valid:
1am CDT Jul 25, 2026-6pm CDT Jul 31, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation