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

Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Northern Plains and Upper Midwest

Dangerous heat will remain across portions of the southern U.S. through the weekend. 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 will produce damaging winds and heavy rainfall over portions of the northern/central Plains into the mid/upper-Mississippi Valleys today. Read More >

Hazardous Weather Conditions

Current conditions at

Mesquite, Mesquite Metro Airport (KHQZ)

Lat: 32.75°NLon: 96.53°WElev: 446ft.

Mostly Cloudy

97°F

36°C

Humidity 42%
Wind Speed S 9 mph
Barometer 29.95 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 30 Jul 1:48 pm CDT
Extended Forecast for

Sunnyvale TX

Heat Advisory July 30, 02:51pm until July 31, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 30, 02:51pm until July 31, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • This Afternoon

    High: 99 °F

    Hot

  • Tonight

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

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 100. Heat index values as high as 107. Southwest wind around 10 mph.

    High: 100 °F

    Hot

  • Friday Night

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

    Low: 79 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 97. Southwest wind 5 to 10 mph becoming north in the afternoon. Winds could gust 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.

    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 73. North northeast wind 5 to 10 mph becoming light and variable after midnight.

    Low: 73 °F

    Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 99. Heat index values as high as 107. South wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 78. South wind 5 to 10 mph.
Friday
Sunny and hot, with a high near 100. Heat index values as high as 107. Southwest wind around 10 mph.
Friday Night
Mostly clear, with a low around 79. South southwest wind 5 to 10 mph.
Saturday
Sunny, with a high near 97. Southwest wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 74. North northeast wind 5 to 10 mph.
Sunday
Sunny, with a high near 95. North wind 5 to 10 mph.
Sunday Night
Clear, with a low around 73. North northeast wind 5 to 10 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 97. Calm wind becoming northeast around 5 mph in the afternoon.
Monday Night
Clear, with a low around 75.
Tuesday
Sunny and hot, with a high near 100.
Tuesday Night
Mostly clear, with a low around 77.
Wednesday
Sunny and hot, with a high near 99.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sunnyvale TX
 32.8°N 96.56°W (Elev. 449 ft)
Last Update:
1:26 pm CDT Jul 30, 2026
Forecast Valid:
2pm CDT Jul 30, 2026-6pm CDT Aug 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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