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

54°F

12°C

Humidity 38%
Wind Speed N 18 mph
Barometer 30.26 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 21 Feb 1:50 pm CST
Extended Forecast for

Grayson County Airport TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 57. North wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 57 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 33. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 54. North wind 10 to 15 mph.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 29. North wind 5 to 10 mph.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 56. North northeast wind around 5 mph becoming southeast in the afternoon.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37. South southeast wind 5 to 10 mph.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 69. South southwest wind 10 to 20 mph, with gusts as high as 25 mph.

    High: 69 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 53. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 53 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 79. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 79 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 57. North wind 15 to 20 mph, with gusts as high as 25 mph.
Tonight
Clear, with a low around 33. North wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 54. North wind 10 to 15 mph.
Sunday Night
Mostly clear, with a low around 29. North wind 5 to 10 mph.
Monday
Sunny, with a high near 56. North northeast wind around 5 mph becoming southeast in the afternoon.
Monday Night
Mostly clear, with a low around 37. South southeast wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 69. South southwest wind 10 to 20 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 53. South wind around 15 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 79. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 43.
Friday
Sunny, with a high near 74.
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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:
12:26 pm CST Feb 21, 2026
Forecast Valid:
2pm CST Feb 21, 2026-6pm CST Feb 27, 2026
 
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