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.

Partly Cloudy and Breezy

81°F

27°C

Humidity 70%
Wind Speed S 21 mph
Barometer 29.95 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 16 Apr 1:50 pm CDT
Extended Forecast for

Grayson County Airport TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 85. South southwest wind around 15 mph, with gusts as high as 20 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 67. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82. South wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 52. South wind 15 to 20 mph becoming north northwest after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 63. North wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    High: 63 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 43. North wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 71. East wind around 5 mph.

    High: 71 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 50. South southeast wind around 5 mph.

    Low: 50 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 69. South wind 5 to 10 mph.

    High: 69 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 85. South southwest wind around 15 mph, with gusts as high as 20 mph.
Tonight
Partly cloudy, with a low around 67. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 82. South wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 52. South wind 15 to 20 mph becoming north northwest after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 63. North wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Saturday Night
Mostly clear, with a low around 43. North wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 71. East wind around 5 mph.
Sunday Night
Partly cloudy, with a low around 50. South southeast wind around 5 mph.
Monday
Partly sunny, with a high near 69. South wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 70.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
Partly sunny, with a high near 80.
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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 16, 2026
Forecast Valid:
2pm CDT Apr 16, 2026-6pm CDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation