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

Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Hazardous Weather Conditions

Current conditions at

Rockwall Municipal Airport (KF46)

Lat: 32.93°NLon: 96.43°WElev: 564ft.

Fair

100°F

38°C

Humidity 25%
Wind Speed SW 6 mph
Barometer 29.92 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 18 Aug 7:35 pm CDT
Extended Forecast for

Royse City TX

Extreme Heat Warning August 18, 07:43pm until August 19, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 18, 07:43pm until August 19, 08:00pm

    NOW until 8:00pm Wed

    Extreme Heat Warning

  • Tonight

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 103. Heat index values as high as 107. Southwest wind around 10 mph.

    High: 103 °F

    Hot

  • Wednesday Night

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

    Low: 78 °F

    Mostly Clear

  • Thursday

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

    High: 103 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. South wind around 5 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 102. South southwest wind around 5 mph.

    High: 102 °F

    Hot

  • Friday Night

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

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 102. South southwest wind around 5 mph.

    High: 102 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 78. South wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 103. Heat index values as high as 107. Southwest wind around 10 mph.
Wednesday Night
Mostly clear, with a low around 78. South wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 103. South southwest wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 77. South wind around 5 mph.
Friday
Sunny and hot, with a high near 102. South southwest wind around 5 mph.
Friday Night
Mostly clear, with a low around 76. South southeast wind around 5 mph.
Saturday
Sunny and hot, with a high near 102. South southwest wind around 5 mph.
Saturday Night
Mostly clear, with a low around 77. South wind around 5 mph.
Sunday
Sunny and hot, with a high near 103.
Sunday Night
Mostly clear, with a low around 78.
Monday
Sunny and hot, with a high near 102.
Monday Night
Mostly clear, with a low around 78.
Tuesday
Sunny and hot, with a high near 101.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Royse City TX
 32.99°N 96.32°W (Elev. 548 ft)
Last Update:
6:12 pm CDT Aug 18, 2026
Forecast Valid:
7pm CDT Aug 18, 2026-6pm CDT Aug 25, 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