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

71°F

22°C

Humidity 96%
Wind Speed E 8 mph
Barometer 30.09 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 23 Jun 10:55 pm CDT
Extended Forecast for

3 Miles SSE Collinsville TX

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 79. South wind around 5 mph.

    Low: 79 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 92. Heat index values as high as 101. South wind 5 to 10 mph.

    High: 92 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 92. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 92 °F

    Sunny

  • Thursday Night

    Thursday 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

  • Friday

    Friday: Mostly sunny, with a high near 94. South wind around 15 mph, with gusts as high as 25 mph.

    High: 94 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 75. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 75 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 94. South wind 15 to 20 mph, with gusts as high as 25 mph.

    High: 94 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 79. South wind around 5 mph.
Wednesday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 92. Heat index values as high as 101. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. South southeast wind 5 to 10 mph.
Thursday
Sunny, with a high near 92. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 94. South wind around 15 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 75. South wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 94. South wind 15 to 20 mph, with gusts as high as 25 mph.
Saturday Night
Mostly clear, with a low around 75. South wind around 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 95.
Sunday Night
Mostly clear, with a low around 76.
Monday
Sunny, with a high near 96.
Monday Night
Mostly clear, with a low around 76.
Tuesday
Sunny, with a high near 96.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Collinsville TX
 33.52°N 96.9°W (Elev. 653 ft)
Last Update:
9:46 pm CDT Jun 23, 2026
Forecast Valid:
11pm CDT Jun 23, 2026-6pm CDT Jun 30, 2026
 
Forecast Discussion
 
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Additional Resources

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