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.

Mostly Cloudy

82°F

28°C

Humidity 66%
Wind Speed Vrbl 3 mph
Barometer 29.88 in
Dewpoint 70°F (21°C)
Visibility 9.00 mi
Heat Index86°F (30°C)
Last update 16 Jun 1:50 pm CDT
Extended Forecast for

Sherman TX

  • This Afternoon

    This Afternoon: Sunny, with a high near 86. Calm wind becoming east southeast around 5 mph.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 73. South southeast wind around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 91. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 91 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 94. South southeast wind around 10 mph.

    High: 94 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 75. East southeast wind 5 to 10 mph becoming north northeast after midnight. Chance of precipitation is 70%.

    Low: 75 °F

    Showers
    Likely

  • Juneteenth

    Juneteenth: A 50 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 88. East wind 5 to 10 mph.

    High: 88 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 74. East southeast wind 5 to 10 mph.

    Low: 74 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. South wind around 10 mph.

    High: 90 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 86. Calm wind becoming east southeast around 5 mph.
Tonight
Mostly clear, with a low around 73. South southeast wind around 5 mph.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 91. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
Increasing clouds, with a low around 75. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 94. South southeast wind around 10 mph.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 75. East southeast wind 5 to 10 mph becoming north northeast after midnight. Chance of precipitation is 70%.
Juneteenth
A 50 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 88. East wind 5 to 10 mph.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 74. East southeast wind 5 to 10 mph.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. South wind around 10 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Sunday
Mostly sunny, with a high near 94.
Sunday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 78.
Monday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sherman TX
 33.64°N 96.6°W (Elev. 732 ft)
Last Update:
1:26 pm CDT Jun 16, 2026
Forecast Valid:
2pm CDT Jun 16, 2026-6pm CDT Jun 22, 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