Showers and Storms in the East; Dangerously Hot and Dry in the West

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Overcast

79°F

26°C

Humidity 73%
Wind Speed SE 13 mph
Barometer 30.06 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 8 Aug 2:35 am CDT
Extended Forecast for

2 Miles NNW Willis OK

Heat Advisory August 8, 12:00pm until August 8, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: A 10 percent chance of showers and thunderstorms before 4am.  Partly cloudy, with a low around 75. South wind around 6 mph.

    Low: 75 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 10 percent chance of showers and thunderstorms after 4pm.  Sunny and hot, with a high near 99. Heat index values as high as 103. South wind 5 to 7 mph.

    High: 99 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South wind 5 to 7 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 98. Heat index values as high as 102. South southwest wind 5 to 9 mph.

    High: 98 °F

    Hot

  • Sunday Night

    Sunday Night: Clear, with a low around 77. South southeast wind around 8 mph.

    Low: 77 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 77.

    Low: 77 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 78.

    Low: 78 °F

    Clear

Detailed Forecast

Overnight
A 10 percent chance of showers and thunderstorms before 4am. Partly cloudy, with a low around 75. South wind around 6 mph.
Saturday
A 10 percent chance of showers and thunderstorms after 4pm. Sunny and hot, with a high near 99. Heat index values as high as 103. South wind 5 to 7 mph.
Saturday Night
Mostly clear, with a low around 76. South wind 5 to 7 mph.
Sunday
Sunny and hot, with a high near 98. Heat index values as high as 102. South southwest wind 5 to 9 mph.
Sunday Night
Clear, with a low around 77. South southeast wind around 8 mph.
Monday
Sunny and hot, with a high near 97.
Monday Night
Clear, with a low around 77.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Clear, with a low around 78.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Mostly clear, with a low around 78.
Friday
Sunny and hot, with a high near 98.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Willis OK
 33.91°N 96.86°W
1:26 am CDT Aug 8, 2026
2am CDT Aug 8, 2026-6pm CDT Aug 14, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database