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

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

86°F

30°C

Humidity 66%
Wind Speed S 13 mph
Barometer 29.97 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 25 Jun 12:50 pm CDT
Extended Forecast for

3 Miles SW Knollwood TX

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 91 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Increasing clouds, with a low around 75. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 75 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 92. Heat index values as high as 99. South southwest wind around 15 mph, with gusts as high as 25 mph.

    High: 92 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 93. South wind around 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 76. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 76 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. South wind around 15 mph, with gusts as high as 25 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95. South wind around 15 mph, with gusts as high as 25 mph.

    High: 95 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 91. South wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 75. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 92. Heat index values as high as 99. South southwest wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 93. South wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 76. South wind around 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 95. South wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 77. South wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 95. South wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 77.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Clear, with a low around 78.
Wednesday
Sunny, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Knollwood TX
 33.66°N 96.65°W (Elev. 807 ft)
Last Update:
1:26 pm CDT Jun 25, 2026
Forecast Valid:
1pm CDT Jun 25, 2026-6pm CDT Jul 1, 2026
 
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