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

75°F

24°C

Humidity 74%
Wind Speed S 15 mph
Barometer 29.87 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 15 May 10:50 am CDT
Extended Forecast for

4 Miles NNW Southmayd TX

  • Today

    Today: Partly sunny, with a high near 88. South wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 88 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 71 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 88. South wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 72. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 72 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 88. South wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 88 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74. South southeast wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 74 °F

    Chance
    T-storms

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 87. South wind around 20 mph, with gusts as high as 30 mph.

    High: 87 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind 15 to 20 mph.

    Low: 72 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 84. South wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 84 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 88. South wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South wind around 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 88. South wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Increasing clouds, with a low around 72. South wind around 15 mph, with gusts as high as 25 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 88. South wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74. South southeast wind 15 to 20 mph, with gusts as high as 25 mph.
Monday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 87. South wind around 20 mph, with gusts as high as 30 mph.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind 15 to 20 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 84. South wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Southmayd TX
 33.68°N 96.76°W (Elev. 748 ft)
Last Update:
6:11 am CDT May 15, 2026
Forecast Valid:
11am CDT May 15, 2026-6pm CDT May 21, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation