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

64°F

18°C

Humidity 64%
Wind Speed E 9 mph
Barometer 29.97 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 30 Apr 4:50 pm CDT
Extended Forecast for

Grayson County Airport TX

  • This Afternoon

    This Afternoon: A 30 percent chance of showers. Mostly cloudy, with a high near 66. East wind around 10 mph.

    High: 66 °F

    Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 7pm. Cloudy, with a low around 54. East wind 5 to 10 mph.

    Low: 54 °F

    Chance
    Showers

  • Friday

    Friday: A 50 percent chance of showers, mainly after 10am. Cloudy, with a high near 63. East wind 10 to 15 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 48. East southeast wind 5 to 10 mph becoming north northwest after midnight.

    Low: 48 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 72. North northwest wind 5 to 10 mph.

    High: 72 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 50. North wind around 5 mph becoming south after midnight.

    Low: 50 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 77. South southwest wind 5 to 10 mph.

    High: 77 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 80. South southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers. Mostly cloudy, with a high near 66. East wind around 10 mph.
Tonight
A 30 percent chance of showers, mainly before 7pm. Cloudy, with a low around 54. East wind 5 to 10 mph.
Friday
A 50 percent chance of showers, mainly after 10am. Cloudy, with a high near 63. East wind 10 to 15 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 20 percent chance of showers before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 48. East southeast wind 5 to 10 mph becoming north northwest after midnight.
Saturday
Sunny, with a high near 72. North northwest wind 5 to 10 mph.
Saturday Night
Clear, with a low around 50. North wind around 5 mph becoming south after midnight.
Sunday
Sunny, with a high near 77. South southwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 58. South wind around 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 80. South southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
Mostly cloudy, with a low around 66.
Tuesday
Mostly cloudy, with a high near 87.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Sunny, with a high near 76.
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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:
1:26 pm CDT Apr 30, 2026
Forecast Valid:
5pm CDT Apr 30, 2026-6pm CDT May 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation