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.

Mostly Cloudy

79°F

26°C

Humidity 89%
Wind Speed SW 9 mph
Barometer 30.08 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 24 Jun 10:50 am CDT
Extended Forecast for

5 Miles W Grayson County Airport TX

  • Today

    Today: A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 92. Heat index values as high as 101. South wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 76. Southeast wind around 5 mph.

    Low: 76 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 92. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 92 °F

    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 93. South wind around 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 78. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 78 °F

    Partly Cloudy

  • Saturday

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

    High: 95 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 78. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 78 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 97. South wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 97 °F

    Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 92. Heat index values as high as 101. South wind 5 to 10 mph. Chance of precipitation is 20%.
Tonight
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 76. Southeast wind around 5 mph.
Thursday
Sunny, with a high near 92. South wind 5 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 93. South wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 78. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 95. South wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 78. South wind around 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 97. South wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 79.
Monday
Sunny, with a high near 98.
Monday Night
Mostly clear, with a low around 79.
Tuesday
Sunny, with a high near 98.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles W Grayson County Airport TX
 33.73°N 96.76°W (Elev. 646 ft)
Last Update:
11:11 am CDT Jun 24, 2026
Forecast Valid:
11am CDT Jun 24, 2026-6pm CDT Jun 30, 2026
 
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Additional Resources

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