Thunderstorms and Heavy Rainfall in the Plains; Hazardous Heat in the South and Southeast

Severe thunderstorms will be possible across the northern/central Plains through Tuesday afternoon and from the central Plains to the Mid-Mississippi Valley Tuesday evening through Wednesday morning. Storms may produce large hail and damaging wind gusts, and heavy rainfall may lead to scattered instances of flash flooding. Meanwhile, hazardous heat persists across the South and Southeast. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

90°F

32°C

Humidity 37%
Wind Speed S 9 mph
Barometer 30.00 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 17 Aug 11:35 pm CDT
Extended Forecast for

3 Miles SW Cartwright OK

Heat Advisory August 17, 11:49pm until August 18, 12:00pm
Extreme Heat Warning August 18, 12:00pm until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning
  •  
    Heat Advisory August 17, 11:49pm until August 18, 12:00pm

    NOW until 12:00pm Tue

    Heat Advisory

  • Tonight

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 106. South southwest wind around 5 mph becoming west in the afternoon.

    High: 106 °F

    Hot

  • Tuesday Night

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

    Low: 82 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 100. South southwest wind around 10 mph.

    High: 100 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 82. South wind 5 to 10 mph.

    Low: 82 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 102. Southwest wind 5 to 10 mph.

    High: 102 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 79. Southeast wind around 5 mph.

    Low: 79 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and hot, with a high near 101. Southeast wind around 5 mph becoming northwest in the morning.

    High: 101 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 79. East wind around 5 mph.
Tuesday
Sunny and hot, with a high near 106. South southwest wind around 5 mph becoming west in the afternoon.
Tuesday Night
Mostly clear, with a low around 82. South wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 100. South southwest wind around 10 mph.
Wednesday Night
Mostly clear, with a low around 82. South wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 102. Southwest wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 79. Southeast wind around 5 mph.
Friday
Sunny and hot, with a high near 101. Southeast wind around 5 mph becoming northwest in the morning.
Friday Night
Mostly clear, with a low around 78. Northeast wind around 5 mph becoming south after midnight.
Saturday
Sunny and hot, with a high near 101.
Saturday Night
Mostly clear, with a low around 79.
Sunday
Sunny and hot, with a high near 101.
Sunday Night
Mostly clear, with a low around 80.
Monday
Sunny and hot, with a high near 102.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Cartwright OK
 33.82°N 96.6°W (Elev. 617 ft)
6:12 pm CDT Aug 17, 2026
11pm CDT Aug 17, 2026-6pm CDT Aug 24, 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