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Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

94°F

34°C

Humidity 36%
Wind Speed S 12 mph
Barometer 29.92 in
Dewpoint 64°F (18°C)
Visibility 8.00 mi
Heat Index95°F (35°C)
Last update 14 Sep 7:15 pm CDT
Extended Forecast for

Pottsboro TX

Heat Advisory September 14, 07:36pm until September 15, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 14, 07:36pm until September 15, 08:00pm

    NOW until 8:00pm Tue

    Heat Advisory

  • Tonight

    Low: 78 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 100. Heat index values as high as 103. South wind around 10 mph.

    High: 100 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. South wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 97. South southeast wind around 5 mph.

    High: 97 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. Southeast wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 97. South wind 5 to 10 mph.

    High: 97 °F

    Sunny

Detailed Forecast

Tonight
Clear, with a low around 78. South southeast wind 10 to 15 mph.
Tuesday
Sunny and hot, with a high near 100. Heat index values as high as 103. South wind around 10 mph.
Tuesday Night
Clear, with a low around 77. South southeast wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 99. South wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 77. South southeast wind 5 to 10 mph.
Thursday
Sunny, with a high near 97. South southeast wind around 5 mph.
Thursday Night
Mostly clear, with a low around 75. Southeast wind around 5 mph.
Friday
Sunny, with a high near 97. South wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 73. South southeast wind around 5 mph.
Saturday
Sunny, with a high near 97.
Saturday Night
Mostly clear, with a low around 74.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 95.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 71.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Pottsboro TX
 33.75°N 96.66°W (Elev. 797 ft)
Last Update:
6:06 pm CDT Sep 14, 2026
Forecast Valid:
7pm CDT Sep 14, 2026-6pm CDT Sep 21, 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