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

63°F

17°C

Humidity 68%
Wind Speed NE 9 mph
Barometer 30.08 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 1 May 10:50 am CDT
Extended Forecast for

Grayson County Airport TX

  • Today

    Today: A 40 percent chance of showers. Cloudy, with a high near 62. East northeast wind 10 to 15 mph.

    High: 62 °F

    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm. Cloudy during the early evening, then gradual clearing, with a low around 48. Northeast wind 5 to 10 mph becoming northwest after midnight.

    Low: 48 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 72. North northwest wind around 5 mph.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50. North northwest wind around 5 mph becoming south in the evening.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. South southwest wind 5 to 15 mph.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. South wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 67. South wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 67 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 83. West southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 83 °F

    Mostly Cloudy

Detailed Forecast

Today
A 40 percent chance of showers. Cloudy, with a high near 62. East northeast wind 10 to 15 mph.
Tonight
A 20 percent chance of showers before 10pm. Cloudy during the early evening, then gradual clearing, with a low around 48. Northeast wind 5 to 10 mph becoming northwest after midnight.
Saturday
Sunny, with a high near 72. North northwest wind around 5 mph.
Saturday Night
Mostly clear, with a low around 50. North northwest wind around 5 mph becoming south in the evening.
Sunday
Sunny, with a high near 78. South southwest wind 5 to 15 mph.
Sunday Night
Partly cloudy, with a low around 58. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 80. South wind 15 to 20 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 67. South wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday
Mostly cloudy, with a high near 83. West southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 59.
Wednesday
Partly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grayson County Airport TX
 33.71°N 96.66°W (Elev. 797 ft)
Last Update:
6:12 am CDT May 1, 2026
Forecast Valid:
11am CDT May 1, 2026-6pm CDT May 7, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation