Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

88°F

31°C

Humidity 46%
Wind Speed SE 9 mph
Barometer 29.94 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 26 Jul 9:35 pm CDT
Extended Forecast for

5 Miles SSE Willis OK

Heat Advisory July 26, 09:52pm until July 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 26, 09:52pm until July 27, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Tonight

    Low: 79 °F

    Mostly Clear

  • Monday

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

    High: 100 °F

    Hot

  • Monday Night

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

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 103. Heat index values as high as 107. South southwest wind 5 to 10 mph.

    High: 103 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 80. South wind around 5 mph.

    Low: 80 °F

    Mostly Clear

  • Wednesday

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

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 80. South southeast wind around 5 mph.

    Low: 80 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny and hot, with a high near 99. South wind around 5 mph.

    High: 99 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 79. South wind around 10 mph.
Monday
Sunny and hot, with a high near 100. South southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 103. Heat index values as high as 107. South southwest wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 80. South wind around 5 mph.
Wednesday
Sunny and hot, with a high near 99. South southeast wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 80. South southeast wind around 5 mph.
Thursday
Mostly sunny and hot, with a high near 99. South wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 81. South southeast wind 5 to 10 mph.
Friday
Mostly sunny and hot, with a high near 101.
Friday Night
Mostly clear, with a low around 80.
Saturday
Mostly sunny, with a high near 97.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Willis OK
 33.82°N 96.79°W (Elev. 646 ft)
6:11 pm CDT Jul 26, 2026
9pm CDT Jul 26, 2026-6pm CDT Aug 2, 2026
 
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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