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.

A Few Clouds

82°F

28°C

Humidity 51%
Wind Speed S 12 mph
Barometer 29.80 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 15 May 4:50 pm CDT
Extended Forecast for

3 Miles WNW Pottsboro TX

  • Tonight

    Tonight: Partly cloudy during the early evening, then becoming cloudy, with a low around 70. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 70 °F

    Becoming
    Cloudy

  • Saturday

    Saturday: Partly sunny, then gradually becoming sunny, with a high near 87. South wind around 15 mph, with gusts as high as 25 mph.

    High: 87 °F

    Becoming
    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: Mostly cloudy, with a high near 87. South wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 87 °F

    Mostly Cloudy

  • Sunday Night

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

    Low: 74 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. South wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 87 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71. South wind 15 to 20 mph.

    Low: 71 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 80. South wind 10 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    High: 80 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy during the early evening, then becoming cloudy, with a low around 70. South wind around 15 mph, with gusts as high as 25 mph.
Saturday
Partly sunny, then gradually becoming sunny, with a high near 87. South wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Increasing clouds, with a low around 72. South wind around 15 mph, with gusts as high as 25 mph.
Sunday
Mostly cloudy, with a high near 87. South wind 15 to 20 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 74. South southeast wind 15 to 20 mph.
Monday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. South wind 15 to 20 mph, with gusts as high as 30 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71. South wind 15 to 20 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 80. South wind 10 to 15 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 76.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Pottsboro TX
 33.8°N 96.71°W (Elev. 817 ft)
Last Update:
3:32 pm CDT May 15, 2026
Forecast Valid:
5pm CDT May 15, 2026-6pm CDT May 22, 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