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

Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Rockwall Municipal Airport (KF46)

Lat: 32.93°NLon: 96.43°WElev: 564ft.

Fair

80°F

27°C

Humidity 77%
Wind Speed S 8 mph
Barometer 29.98 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 31 Jul 7:35 am CDT
Extended Forecast for

Sachse TX

Heat Advisory July 31, 07:50am until July 31, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 31, 07:50am until July 31, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Today

    High: 103 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 80. South southwest wind around 5 mph.

    Low: 80 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 97. Heat index values as high as 100. North wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 97 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. North wind 5 to 10 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 74. North northeast wind 5 to 10 mph becoming light and variable in the evening.

    Low: 74 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 97. Calm wind becoming east around 5 mph in the afternoon.

    High: 97 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 75. East wind around 5 mph becoming south southeast after midnight.

    Low: 75 °F

    Clear

Detailed Forecast

Today
Sunny and hot, with a high near 103. Heat index values as high as 110. South southwest wind around 10 mph.
Tonight
Partly cloudy, with a low around 80. South southwest wind around 5 mph.
Saturday
Sunny, with a high near 97. Heat index values as high as 100. North wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 74. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 95. North wind 5 to 10 mph.
Sunday Night
Clear, with a low around 74. North northeast wind 5 to 10 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 97. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Clear, with a low around 75. East wind around 5 mph becoming south southeast after midnight.
Tuesday
Sunny and hot, with a high near 99. South wind 5 to 10 mph.
Tuesday Night
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, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sachse TX
 32.99°N 96.59°W (Elev. 548 ft)
Last Update:
6:06 am CDT Jul 31, 2026
Forecast Valid:
7am CDT Jul 31, 2026-6pm CDT Aug 6, 2026
 
Forecast Discussion
 
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Additional Resources

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