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

72°F

22°C

Humidity 50%
Wind Speed E 8 mph
Barometer 30.09 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 23 Mar 7:35 pm CDT
Extended Forecast for

Grayson County Airport TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. East wind around 10 mph.

    Low: 54 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 79. Southeast wind around 10 mph.

    High: 79 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 61. East southeast wind around 10 mph.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 87. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 87 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 65. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 88. South wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 61. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 61 °F

    Clear

  • Friday

    Friday: Mostly sunny, with a high near 78. Breezy, with a south wind 15 to 25 mph becoming north northwest in the morning. Winds could gust as high as 30 mph.

    High: 78 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48. Breezy, with a north northeast wind 15 to 25 mph, with gusts as high as 30 mph.

    Low: 48 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 54. East wind around 10 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 79. Southeast wind around 10 mph.
Tuesday Night
Partly cloudy, with a low around 61. East southeast wind around 10 mph.
Wednesday
Sunny, with a high near 87. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Clear, with a low around 65. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 88. South wind 15 to 20 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 61. South wind around 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 78. Breezy, with a south wind 15 to 25 mph becoming north northwest in the morning. Winds could gust as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 48. Breezy, with a north northeast wind 15 to 25 mph, with gusts as high as 30 mph.
Saturday
Partly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grayson County Airport TX
 33.71°N 96.66°W (Elev. 797 ft)
Last Update:
6:07 pm CDT Mar 23, 2026
Forecast Valid:
7pm CDT Mar 23, 2026-6pm CDT Mar 30, 2026
 
Forecast Discussion
 
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