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

86°F

30°C

Humidity 70%
Wind Speed S 8 mph
Barometer 30.10 in
Dewpoint 75°F (24°C)
Visibility 8.00 mi
Heat Index95°F (35°C)
Last update 23 Jun 2:50 pm CDT
Extended Forecast for

4 Miles NNE Denison TX

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 90. Heat index values as high as 102. South wind 5 to 10 mph.

    High: 90 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 77. South southeast wind around 5 mph.

    Low: 77 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 94. Heat index values as high as 105. South southwest wind 5 to 10 mph.

    High: 94 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South wind around 5 mph becoming east southeast in the evening.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 94. South wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 77. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 95. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 95 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 77 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 96. South wind around 15 mph, with gusts as high as 25 mph.

    High: 96 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 90. Heat index values as high as 102. South wind 5 to 10 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 77. South southeast wind around 5 mph.
Wednesday
A 20 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 94. Heat index values as high as 105. South southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. South wind around 5 mph becoming east southeast in the evening.
Thursday
Sunny, with a high near 94. South wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 77. South wind around 10 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 95. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 96. South wind around 15 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny, with a high near 97.
Sunday Night
Mostly clear, with a low around 79.
Monday
Sunny, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Denison TX
 33.8°N 96.52°W (Elev. 518 ft)
Last Update:
2:31 pm CDT Jun 23, 2026
Forecast Valid:
3pm CDT Jun 23, 2026-6pm CDT Jun 29, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation