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

45°F

7°C

Humidity 97%
Wind Speed E 7 mph
Barometer 30.20 in
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 12 Feb 5:55 am CST
Extended Forecast for

Grayson County Airport TX

  • Today

    Today: Sunny, with a high near 71. East southeast wind around 5 mph becoming south in the afternoon.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 52. Southeast wind around 5 mph.

    Low: 52 °F

    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after noon. Partly sunny, with a high near 76. South southeast wind 5 to 10 mph.

    High: 76 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, with thunderstorms also possible after 3am. Cloudy, with a low around 59. South southeast wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 67. South wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%.

    High: 67 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 51. West wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.

    Low: 51 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 67. North wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 67 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. North wind around 5 mph becoming calm in the evening.

    Low: 45 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Sunny, with a high near 71. South wind 5 to 10 mph.

    High: 71 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 71. East southeast wind around 5 mph becoming south in the afternoon.
Tonight
Partly cloudy, with a low around 52. Southeast wind around 5 mph.
Friday
A 20 percent chance of showers after noon. Partly sunny, with a high near 76. South southeast wind 5 to 10 mph.
Friday Night
Showers likely, with thunderstorms also possible after 3am. Cloudy, with a low around 59. South southeast wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and possibly a thunderstorm. High near 67. South wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%.
Saturday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 51. West wind 10 to 15 mph becoming north northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 67. North wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 45. North wind around 5 mph becoming calm in the evening.
Washington's Birthday
Sunny, with a high near 71. South wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 53.
Tuesday
Partly sunny, with a high near 76.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 78.
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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:
5:06 am CST Feb 12, 2026
Forecast Valid:
6am CST Feb 12, 2026-6pm CST Feb 18, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation