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.

Fair

90°F

32°C

Humidity 55%
Wind Speed SW 9 mph
Barometer 30.07 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 8 Jul 10:50 am CDT
Extended Forecast for

Sherman TX

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 4pm.  Sunny, with a high near 98. Heat index values as high as 103. South southwest wind around 5 mph.

    High: 98 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. Heat index values as high as 103. South southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 78. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 98. South southwest wind around 10 mph, with gusts as high as 20 mph.

    High: 98 °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 96. South southwest wind 5 to 10 mph.

    High: 96 °F

    Sunny

  • Saturday Night

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

    Low: 76 °F

    Partly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 94. South southwest wind around 5 mph.

    High: 94 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 98. Heat index values as high as 103. South southwest wind around 5 mph.
Tonight
Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.
Thursday
Sunny and hot, with a high near 100. Heat index values as high as 103. South southwest wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 78. South wind around 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 98. South southwest wind around 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 79. South wind around 10 mph.
Saturday
Sunny, with a high near 96. 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 wind around 5 mph.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. South southwest wind around 5 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny, with a high near 94.
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ABOUT THIS FORECAST

 
Point Forecast:
Sherman TX
 33.64°N 96.6°W (Elev. 732 ft)
6:06 am CDT Jul 8, 2026
11am CDT Jul 8, 2026-6pm CDT Jul 14, 2026
 
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