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.

Overcast

82°F

28°C

Humidity 84%
Wind Speed S 14 mph
Barometer 30.15 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 23 Jun 9:50 am CDT
Extended Forecast for

2 Miles ENE Knollwood TX

  • Today

    Today: A 40 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91. Heat index values as high as 102. South wind 5 to 10 mph.

    High: 91 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between 10pm and 1am. Increasing clouds, with a low around 76. South wind around 5 mph.

    Low: 76 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 92. Heat index values as high as 101. South wind 5 to 10 mph.

    High: 92 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 92. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 92 °F

    Mostly Sunny

  • Thursday Night

    Thursday 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

  • Friday

    Friday: Mostly sunny, with a high near 94. South wind around 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 77. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 77 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 96. South wind around 15 mph, with gusts as high as 25 mph.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91. Heat index values as high as 102. South wind 5 to 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly between 10pm and 1am. Increasing clouds, with a low around 76. South wind around 5 mph.
Wednesday
Mostly sunny, with a high near 92. Heat index values as high as 101. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 92. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 94. South wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 77. South wind around 15 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 96. South wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny, with a high near 97.
Sunday Night
Mostly clear, with a low around 79.
Monday
Sunny, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Knollwood TX
 33.71°N 96.57°W (Elev. 673 ft)
Last Update:
6:06 am CDT Jun 23, 2026
Forecast Valid:
9am CDT Jun 23, 2026-6pm CDT Jun 29, 2026
 
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Additional Resources

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