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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Rockwall Municipal Airport (KF46)

Lat: 32.93°NLon: 96.43°WElev: 564ft.

Partly Cloudy

99°F

37°C

Humidity 31%
Wind Speed E 6 mph
Barometer 30.03 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index101°F (38°C)
Last update 28 Aug 2:55 pm CDT
Extended Forecast for

Sachse TX

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 99. Heat index values as high as 103. East northeast wind around 5 mph.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 76. East wind around 5 mph.

    Low: 76 °F

    Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Heat index values as high as 104. Southeast wind around 5 mph.

    High: 100 °F

    Hot

  • Saturday Night

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

    Low: 77 °F

    Mostly Clear

  • Sunday

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

    High: 100 °F

    Hot

  • Sunday Night

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

    Low: 77 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 99. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Monday Night

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

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 98. South wind 5 to 10 mph.

    High: 98 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 99. Heat index values as high as 103. East northeast wind around 5 mph.
Tonight
Clear, with a low around 76. East wind around 5 mph.
Saturday
Sunny and hot, with a high near 100. Heat index values as high as 104. Southeast wind around 5 mph.
Saturday Night
Mostly clear, with a low around 77. South southeast wind around 5 mph.
Sunday
Sunny and hot, with a high near 100. South wind 5 to 10 mph.
Sunday Night
Clear, with a low around 77. South southeast wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 99. South wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 77. Southeast wind 5 to 10 mph.
Tuesday
Sunny, with a high near 98. South wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 77.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny and hot, with a high near 99.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sachse TX
 32.99°N 96.59°W (Elev. 548 ft)
Last Update:
2:36 pm CDT Aug 28, 2026
Forecast Valid:
3pm CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation