Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

95°F

35°C

Humidity 34%
Wind Speed SE 8 mph
Barometer 30.02 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 22 Aug 2:50 pm CDT
Extended Forecast for

2 Miles SSE Cartwright OK

Heat Advisory August 22, 03:02pm until August 22, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 22, 03:02pm until August 22, 08:00pm

    NOW until 8:00pm Sat

    Heat Advisory

  • This Afternoon

    High: 100 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am.  Partly cloudy, with a low around 78. South southwest wind around 5 mph becoming north northeast in the evening.  Chance of precipitation is 20%.

    Low: 78 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 107. Heat index values as high as 111. Calm wind becoming southwest around 5 mph in the morning.

    High: 107 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 83. South wind 5 to 10 mph.

    Low: 83 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 109. Southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 109 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 83. South wind around 10 mph.

    Low: 83 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 109. Southwest wind around 10 mph.

    High: 109 °F

    Hot

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 78. East southeast wind 5 to 10 mph becoming south southwest after midnight.

    Low: 78 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

This Afternoon
A 10 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 100. South wind around 5 mph.
Tonight
A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am. Partly cloudy, with a low around 78. South southwest wind around 5 mph becoming north northeast in the evening. Chance of precipitation is 20%.
Sunday
Mostly sunny and hot, with a high near 107. Heat index values as high as 111. Calm wind becoming southwest around 5 mph in the morning.
Sunday Night
Partly cloudy, with a low around 83. South wind 5 to 10 mph.
Monday
Mostly sunny and hot, with a high near 109. Southwest wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 83. South wind around 10 mph.
Tuesday
Sunny and hot, with a high near 109. Southwest wind around 10 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 78. East southeast wind 5 to 10 mph becoming south southwest after midnight.
Wednesday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 104. South southwest wind around 5 mph becoming north in the afternoon.
Wednesday Night
Partly cloudy, with a low around 75.
Thursday
Sunny and hot, with a high near 102.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 75.
Friday
Sunny and hot, with a high near 102.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Cartwright OK
 33.82°N 96.55°W (Elev. 515 ft)
2:47 pm CDT Aug 22, 2026
3pm CDT Aug 22, 2026-6pm CDT Aug 28, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database