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

82°F

28°C

Humidity 74%
Wind Speed S 5 mph
Barometer 29.95 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 5 Jun 1:50 pm CDT
Extended Forecast for

Southmayd TX

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. South southeast wind around 10 mph.

    High: 82 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 70. South southeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 80. Southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 70. South southeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 83 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 73. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 88. South wind around 15 mph, with gusts as high as 20 mph.

    High: 88 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Clear, with a low around 75. South wind 10 to 15 mph.

    Low: 75 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90. South wind around 10 mph.

    High: 90 °F

    Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. South southeast wind around 10 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Cloudy, with a low around 70. South southeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers and possibly a thunderstorm. High near 80. Southeast wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely and possibly a thunderstorm. Increasing clouds, with a low around 70. South southeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday Night
Partly cloudy, with a low around 73. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 88. South wind around 15 mph, with gusts as high as 20 mph.
Monday Night
Clear, with a low around 75. South wind 10 to 15 mph.
Tuesday
Sunny, with a high near 90. South wind around 10 mph.
Tuesday Night
Clear, with a low around 75.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Southmayd TX
 33.62°N 96.71°W (Elev. 820 ft)
Last Update:
1:26 pm CDT Jun 5, 2026
Forecast Valid:
2pm CDT Jun 5, 2026-6pm CDT Jun 11, 2026
 
Forecast Discussion
 
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Additional Resources

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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