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.

A Few Clouds

58°F

14°C

Humidity 45%
Wind Speed NA
Barometer 30.27 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 19 Apr 9:35 pm CDT
Extended Forecast for

Grayson County Airport TX

  • Tonight

    Tonight: Partly cloudy, with a low around 49. South southeast wind around 5 mph.

    Low: 49 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 72. South wind 5 to 10 mph.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 52. South wind 5 to 10 mph.

    Low: 52 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 67. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 67 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 58. South southeast wind around 10 mph.

    Low: 58 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 75 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 65. South southeast wind around 15 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. South wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 80 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 66 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 49. South southeast wind around 5 mph.
Monday
Mostly sunny, with a high near 72. South wind 5 to 10 mph.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 52. South wind 5 to 10 mph.
Tuesday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 67. South wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 58. South southeast wind around 10 mph.
Wednesday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 65. South southeast wind around 15 mph, with gusts as high as 20 mph.
Thursday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. South wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 25 mph.
Friday
Partly sunny, with a high near 82.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 60.
Saturday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
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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:
6:06 pm CDT Apr 19, 2026
Forecast Valid:
9pm CDT Apr 19, 2026-6pm CDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation