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.

A Few Clouds

83°F

28°C

Humidity 57%
Wind Speed E 5 mph
Barometer 30.00 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 22 Aug 1:15 am CDT
Extended Forecast for

Willis OK

  • Overnight

    Overnight: Mostly clear, with a low around 79. East southeast wind 3 to 5 mph.

    Low: 79 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 4pm.  Mostly sunny and hot, with a high near 103. Heat index values as high as 107. Calm wind becoming southeast 5 to 8 mph in the morning.  Chance of precipitation is 20%.

    High: 103 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 10pm.  Partly cloudy, with a low around 77. South southeast wind 5 to 7 mph becoming light and variable  after midnight.  Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 106. Heat index values as high as 110. Light and variable wind becoming south 5 to 8 mph in the morning.

    High: 106 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 81. South southeast wind around 8 mph.

    Low: 81 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 109.

    High: 109 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 82.

    Low: 82 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 108.

    High: 108 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 79.

    Low: 79 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 79. East southeast wind 3 to 5 mph.
Saturday
A slight chance of showers, with thunderstorms also possible after 4pm. Mostly sunny and hot, with a high near 103. Heat index values as high as 107. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms before 7pm, then a chance of showers between 7pm and 10pm. Partly cloudy, with a low around 77. South southeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 30%.
Sunday
Mostly sunny and hot, with a high near 106. Heat index values as high as 110. Light and variable wind becoming south 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 81. South southeast wind around 8 mph.
Monday
Sunny and hot, with a high near 109.
Monday Night
Mostly clear, with a low around 82.
Tuesday
Sunny and hot, with a high near 108.
Tuesday Night
Mostly clear, with a low around 79.
Wednesday
Mostly sunny and hot, with a high near 104.
Wednesday Night
Partly cloudy, with a low around 75.
Thursday
Sunny and hot, with a high near 102.
Thursday Night
Mostly clear, with a low around 75.
Friday
Sunny and hot, with a high near 103.
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ABOUT THIS FORECAST

 
Point Forecast:
Willis OK
 33.91°N 96.83°W
1:27 am CDT Aug 22, 2026
1am CDT Aug 22, 2026-6pm CDT Aug 28, 2026
 
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