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

67°F

19°C

Humidity 76%
Wind Speed S 18 mph
Barometer 29.91 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 15 Nov 3:35 am CST
Extended Forecast for

Denison TX

  • Overnight

    Overnight: Clear, with a low around 64. South southwest wind around 15 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 83. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59. South wind 5 to 10 mph becoming west after midnight.

    Low: 59 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Northwest wind around 5 mph becoming east in the afternoon.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. South southeast wind 5 to 10 mph.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. South southwest wind around 10 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Southwest wind 5 to 10 mph.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 64. South wind 5 to 10 mph.

    Low: 64 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

Detailed Forecast

Overnight
Clear, with a low around 64. South southwest wind around 15 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 83. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 59. South wind 5 to 10 mph becoming west after midnight.
Sunday
Sunny, with a high near 79. Northwest wind around 5 mph becoming east in the afternoon.
Sunday Night
Mostly clear, with a low around 63. South southeast wind 5 to 10 mph.
Monday
Sunny, with a high near 83. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 65. South southwest wind around 10 mph.
Tuesday
Mostly sunny, with a high near 83. Southwest wind 5 to 10 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 64. South wind 5 to 10 mph.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%.
Thursday
Showers and possibly a thunderstorm. High near 72. Chance of precipitation is 80%.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 54.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Denison TX
 33.75°N 96.57°W (Elev. 748 ft)
Last Update:
11:21 pm CST Nov 14, 2025
Forecast Valid:
3am CST Nov 15, 2025-6pm CST Nov 21, 2025
 
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