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

58°F

14°C

Humidity 94%
Wind Speed E 5 mph
Barometer 30.16 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 12 May 4:15 am CDT
Extended Forecast for

Grayson County Airport TX

  • Today

    Today: Sunny, with a high near 81. Calm wind becoming south around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 59. South southeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming southwest around 5 mph.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64. Southeast wind around 5 mph.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 87. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 87 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 70. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 70 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 88. South wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 88 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 70. South wind around 15 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 86. South wind around 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 81. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Clear, with a low around 59. South southeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 86. Calm wind becoming southwest around 5 mph.
Wednesday Night
Mostly clear, with a low around 64. Southeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 87. South wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 70. South wind around 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 88. South wind 15 to 20 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 70. South wind around 15 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 86. South wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73.
Sunday
Partly sunny, with a high near 88.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grayson County Airport TX
 33.71°N 96.68°W (Elev. 751 ft)
Last Update:
1:26 am CDT May 12, 2026
Forecast Valid:
4am CDT May 12, 2026-6pm CDT May 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation