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

70°F

21°C

Humidity 39%
Wind Speed S 8 mph
Barometer 29.91 in
Dewpoint 44°F (7°C)
Visibility 9.00 mi
Last update 13 Mar 7:15 pm CDT
Extended Forecast for

Grayson County Airport TX

  • Tonight

    Tonight: Clear, with a low around 52. Southeast wind 5 to 10 mph.

    Low: 52 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 78. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61. South wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 77. Windy, with a south wind 20 to 30 mph becoming north northwest in the afternoon. Winds could gust as high as 40 mph.

    High: 77 °F

    Decreasing
    Clouds and
    Windy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 29. Windy, with a north northwest wind 25 to 30 mph decreasing to 20 to 25 mph after midnight. Winds could gust as high as 40 mph.

    Low: 29 °F

    Partly Cloudy
    and Windy

  • Monday

    Monday: Sunny, with a high near 51. North northwest wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. North northwest wind around 5 mph becoming south southeast after midnight.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 64. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 64 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 47. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 52. Southeast wind 5 to 10 mph.
Saturday
Sunny, with a high near 78. South wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 61. South wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 77. Windy, with a south wind 20 to 30 mph becoming north northwest in the afternoon. Winds could gust as high as 40 mph.
Sunday Night
Partly cloudy, with a low around 29. Windy, with a north northwest wind 25 to 30 mph decreasing to 20 to 25 mph after midnight. Winds could gust as high as 40 mph.
Monday
Sunny, with a high near 51. North northwest wind 15 to 20 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 34. North northwest wind around 5 mph becoming south southeast after midnight.
Tuesday
Mostly sunny, with a high near 64. South southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 47. South wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 84.
Thursday Night
Clear, with a low around 58.
Friday
Sunny, with a high near 88.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grayson County Airport TX
 33.71°N 96.66°W (Elev. 797 ft)
Last Update:
6:06 pm CDT Mar 13, 2026
Forecast Valid:
7pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation