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 with Haze

62°F

17°C

Humidity 64%
Wind Speed SE 9 mph
Barometer 30.11 in
Dewpoint 49°F (9°C)
Visibility 0.75 mi
Last update 9 Apr 2:55 am CDT
Extended Forecast for

Grayson County Airport TX

  • Overnight

    Overnight: Clear, with a steady temperature around 57. South southeast wind around 5 mph.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 78. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. South southeast wind around 10 mph.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Increasing clouds, with a high near 79. South wind around 10 mph.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62. South southeast wind around 10 mph.

    Low: 62 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South southeast wind around 15 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77. South wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 77 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. 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

Overnight
Clear, with a steady temperature around 57. South southeast wind around 5 mph.
Thursday
Sunny, with a high near 78. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 61. South southeast wind around 10 mph.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Increasing clouds, with a high near 79. South wind around 10 mph.
Friday Night
Partly cloudy, with a low around 62. South southeast wind around 10 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South southeast wind around 15 mph, with gusts as high as 20 mph.
Sunday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 77. South wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 25 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Tuesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
Grayson County Airport TX
 33.71°N 96.66°W (Elev. 797 ft)
Last Update:
1:26 am CDT Apr 9, 2026
Forecast Valid:
3am CDT Apr 9, 2026-6pm CDT Apr 15, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation