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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

82°F

28°C

Humidity 68%
Wind Speed S 9 mph
Barometer 29.90 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 30 Jul 3:15 am CDT
Extended Forecast for

4 Miles SSE Gordonville TX

Heat Advisory July 30, 03:26am until July 30, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 30, 03:26am until July 30, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Overnight

    Low: 80 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. Heat index values as high as 106. South wind around 5 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 79. South wind around 5 mph.

    Low: 79 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and hot, with a high near 102. Heat index values as high as 109. Southwest wind 5 to 10 mph.

    High: 102 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 78. South southwest wind around 5 mph becoming north after midnight.

    Low: 78 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 94. North wind 5 to 10 mph.

    High: 94 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 71. North wind 5 to 10 mph.

    Low: 71 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 91. North northeast wind around 5 mph.

    High: 91 °F

    Sunny

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 80. South wind around 5 mph.
Thursday
Sunny and hot, with a high near 100. Heat index values as high as 106. South wind around 5 mph.
Thursday Night
Mostly clear, with a low around 79. South wind around 5 mph.
Friday
Mostly sunny and hot, with a high near 102. Heat index values as high as 109. Southwest wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around 78. South southwest wind around 5 mph becoming north after midnight.
Saturday
Mostly sunny, with a high near 94. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 71. North wind 5 to 10 mph.
Sunday
Sunny, with a high near 91. North northeast wind around 5 mph.
Sunday Night
Clear, with a low around 71. Northeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 93.
Monday Night
Clear, with a low around 73.
Tuesday
Sunny, with a high near 96.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny, with a high near 97.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Gordonville TX
 33.8°N 96.85°W (Elev. 699 ft)
Last Update:
1:26 am CDT Jul 30, 2026
Forecast Valid:
3am CDT Jul 30, 2026-6pm CDT Aug 5, 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