Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

A Few Clouds

80°F

27°C

Humidity 81%
Wind Speed SE 8 mph
Barometer 29.94 in
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Heat Index84°F (29°C)
Last update 26 Jul 3:55 am CDT
Extended Forecast for

2 Miles E Gainesville TX

Heat Advisory July 26, 04:18am until July 26, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 26, 04:18am until July 26, 09:00pm

    NOW until 9:00pm Sat

    Heat Advisory

  • Today

    High: 96 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 95. Heat index values as high as 105. South wind 5 to 10 mph.

    High: 95 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 77 °F

    Partly Cloudy

  • Monday

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

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 75. South wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 101. South southwest wind around 5 mph.

    High: 101 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. South southeast wind around 5 mph becoming calm  in the evening.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 96. Heat index values as high as 102. Southeast wind around 5 mph.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 77. South southeast wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 95. Heat index values as high as 105. South wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 77. South wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 99. South wind around 5 mph.
Monday Night
Mostly clear, with a low around 75. South wind around 5 mph.
Tuesday
Sunny and hot, with a high near 101. South southwest wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 76. South southeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 102. Calm wind becoming south southwest around 5 mph.
Wednesday Night
Mostly clear, with a low around 77.
Thursday
Sunny and hot, with a high near 101.
Thursday Night
Partly cloudy, with a low around 77.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 97.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Gainesville TX
 33.63°N 97.12°W (Elev. 781 ft)
12:25 am CDT Jul 26, 2025
4am CDT Jul 26, 2025-6pm CDT Aug 1, 2025
 
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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