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

99°F

37°C

Humidity 35%
Wind Speed S 9 mph
Barometer 29.95 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 26 Jul 5:50 pm CDT
Extended Forecast for

5 Miles W Cartwright OK

Heat Advisory July 26, 06:09pm until July 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 26, 06:09pm 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 81. South wind 5 to 10 mph.

    Low: 81 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 102. Heat index values as high as 105. South southwest wind 5 to 10 mph.

    High: 102 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 82. South wind 5 to 10 mph.

    Low: 82 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 97. South southwest wind around 5 mph.

    High: 97 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 82. South southeast wind around 5 mph.

    Low: 82 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 97. South wind around 5 mph.

    High: 97 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 79. South wind 5 to 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 81. South wind 5 to 10 mph.
Tuesday
Sunny and hot, with a high near 102. Heat index values as high as 105. South southwest wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 82. South wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 97. South southwest wind around 5 mph.
Wednesday Night
Partly cloudy, with a low around 82. South southeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 97. South wind around 5 mph.
Thursday Night
Partly cloudy, with a low around 82. South southeast wind around 10 mph.
Friday
Mostly sunny, with a high near 98.
Friday Night
Mostly clear, with a low around 81.
Saturday
Mostly sunny, with a high near 95.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny, with a high near 93.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Cartwright OK
 33.87°N 96.66°W (Elev. 617 ft)
5:41 pm CDT Jul 26, 2026
6pm CDT Jul 26, 2026-6pm CDT Aug 2, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database