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

81°F

27°C

Humidity 54%
Wind Speed E 7 mph
Barometer 29.99 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 13 May 7:55 pm CDT
Extended Forecast for

4 Miles WNW Southmayd TX

  • Tonight

    Tonight: Mostly clear, with a low around 65. Southeast wind around 5 mph.

    Low: 65 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 88. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 88 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 69. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Mostly Clear

  • Friday

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

    High: 88 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 69. South wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 69 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 86. South wind around 20 mph, with gusts as high as 25 mph.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 72 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 83. South wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 83 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. South wind 15 to 20 mph.

    Low: 75 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 65. Southeast wind around 5 mph.
Thursday
Mostly sunny, with a high near 88. South wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 69. South wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 88. South wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 69. South wind 15 to 20 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 86. South wind around 20 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 72. South wind around 15 mph, with gusts as high as 25 mph.
Sunday
Partly sunny, with a high near 83. South wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. South wind 15 to 20 mph.
Monday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Monday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Southmayd TX
 33.64°N 96.79°W (Elev. 719 ft)
Last Update:
6:12 pm CDT May 13, 2026
Forecast Valid:
8pm CDT May 13, 2026-6pm CDT May 20, 2026
 
Forecast Discussion
 
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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