National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms and Heavy Rain in the Central Plains to Upper Midwest; Extreme Heat in Parts of the South

Thunderstorms with severe wind gusts and hail will be possible today across parts of the central Plains, and from the Missouri Valley into the upper Mississippi Valley. Heavy rain associated with the thunderstorms may also produce flash/urban flooding. Critical fire weather conditions expected in the Great Basin and interior Northwest. Dangerous heat continues across the Southwest and Southeast. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

A Few Clouds

99°F

37°C

Humidity 39%
Wind Speed S 8 mph
Barometer 30.02 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index106°F (41°C)
Last update 8 Jul 2:50 pm CDT
Extended Forecast for

Sherman TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 98. Heat index values as high as 104. Southwest wind around 5 mph.

    High: 98 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 79. South wind 5 to 10 mph.

    Low: 79 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99. Heat index values as high as 104. South southwest wind around 10 mph.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 79. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 97. South southwest wind around 10 mph.

    High: 97 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 79. South wind around 10 mph.

    Low: 79 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 97. South southwest wind 5 to 10 mph.

    High: 97 °F

    Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 76. South southeast wind around 5 mph.

    Low: 76 °F

    Mostly Clear
    then Chance
    T-storms

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. South wind around 5 mph.

    High: 92 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 98. Heat index values as high as 104. Southwest wind around 5 mph.
Tonight
Mostly clear, with a low around 79. South wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 99. Heat index values as high as 104. South southwest wind around 10 mph.
Thursday Night
Mostly clear, with a low around 79. South wind around 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 97. South southwest wind around 10 mph.
Friday Night
Mostly clear, with a low around 79. South wind around 10 mph.
Saturday
Sunny, with a high near 97. South southwest wind 5 to 10 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 76. South southeast wind around 5 mph.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92. South wind around 5 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Monday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Tuesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sherman TX
 33.64°N 96.6°W (Elev. 732 ft)
Last Update:
1:26 pm CDT Jul 8, 2026
Forecast Valid:
3pm CDT Jul 8, 2026-6pm CDT Jul 14, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation