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

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

91°F

33°C

Humidity 46%
Wind Speed SW 6 mph
Barometer 30.21 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 16 Sep 10:50 am CDT
Extended Forecast for

4 Miles S Willis OK

Heat Advisory September 16, 11:45am until September 16, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 16, 11:45am until September 16, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • Today

    High: 100 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 78. Southeast wind around 5 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

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

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. Southeast wind around 5 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 97. South wind around 5 mph.

    High: 97 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 77. South southeast wind around 5 mph.

    Low: 77 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 98. South southwest wind 5 to 10 mph.

    High: 98 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Today
Sunny and hot, with a high near 100. Southeast wind around 5 mph.
Tonight
Mostly clear, with a low around 78. Southeast wind around 5 mph.
Thursday
Mostly sunny and hot, with a high near 99. Southeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 77. Southeast wind around 5 mph.
Friday
Sunny, with a high near 97. South wind around 5 mph.
Friday Night
Mostly clear, with a low around 77. South southeast wind around 5 mph.
Saturday
Sunny, with a high near 98. South southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 76. South wind 5 to 10 mph.
Sunday
Sunny, with a high near 97. South wind around 10 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 75.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 71.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Willis OK
 33.84°N 96.82°W (Elev. 656 ft)
Last Update:
6:06 am CDT Sep 16, 2026
Forecast Valid:
11am CDT Sep 16, 2026-6pm CDT Sep 22, 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