Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Partly Cloudy

95°F

35°C

Humidity 41%
Wind Speed SE 7 mph
Barometer 29.97 in
Dewpoint 68°F (20°C)
Visibility 7.00 mi
Heat Index100°F (38°C)
Last update 5 Sep 12:59 pm CDT
Extended Forecast for

Denison TX

Heat Advisory September 6, 12:00pm until September 6, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 101. Heat index values as high as 104. Southeast wind around 5 mph.

    High: 101 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 79. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 79 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 101. Heat index values as high as 104. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 101 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 79. East southeast wind around 5 mph becoming calm  in the evening.

    Low: 79 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny and hot, with a high near 101. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 101 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 79. South southeast wind around 5 mph.

    Low: 79 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 102. South southeast wind 5 to 10 mph.

    High: 102 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.

    Low: 78 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 101. South wind around 5 mph.

    High: 101 °F

    Hot

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 101. Heat index values as high as 104. Southeast wind around 5 mph.
Tonight
Mostly clear, with a low around 79. Southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny and hot, with a high near 101. Heat index values as high as 104. Calm wind becoming east southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 79. East southeast wind around 5 mph becoming calm in the evening.
Labor Day
Sunny and hot, with a high near 101. Calm wind becoming southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 79. South southeast wind around 5 mph.
Tuesday
Sunny and hot, with a high near 102. South southeast wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 78. South southeast wind 5 to 10 mph.
Wednesday
Sunny and hot, with a high near 101. South wind around 5 mph.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
Sunny and hot, with a high near 101.
Thursday Night
Mostly clear, with a low around 78.
Friday
Mostly sunny and hot, with a high near 100.
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ABOUT THIS FORECAST

 
Point Forecast:
Denison TX
 33.75°N 96.55°W (Elev. 758 ft)
1:26 pm CDT Sep 5, 2026
1pm CDT Sep 5, 2026-6pm CDT Sep 11, 2026
 
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Additional Resources

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