National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

River Flooding Continues in East Florida; Rain and Thunderstorms from the Mid-Atlantic to the Northeast Thursday; Heavy Rain in Puerto Rico

Significant river flooding is forecast along the St. John’s and the Peace rivers through the end of the week as flood waters will be slow to recede. Periods of rainfall and thunderstorms are expected across the Lower Great Lakes, Central Appalachians, Mid-Atlantic and Northeast Thursday and Friday. In Puerto Rico, increased moisture in the Atlantic will produce heavy rainfall for the island. Read More >

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair

54°F

12°C

Humidity 88%
Wind Speed S 6 mph
Barometer 29.94 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 5 Nov 6:50 am CST
Extended Forecast for

Denison TX

  • Today

    Today: Mostly sunny, with a high near 76. South southeast wind 5 to 10 mph becoming east northeast in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers. Mostly cloudy, with a low around 54. North wind 5 to 10 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Friday

    Friday: A 10 percent chance of showers before 9am. Partly sunny, with a high near 68. North wind around 10 mph.

    High: 68 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 49. North northeast wind around 5 mph.

    Low: 49 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, with a high near 65. North northeast wind around 5 mph becoming calm in the afternoon.

    High: 65 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 67. North northwest wind around 5 mph becoming calm.

    High: 67 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers before noon. Sunny, with a high near 69. Calm wind becoming south southeast around 5 mph.

    High: 69 °F

    Slight Chance
    Showers then
    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 76. South southeast wind 5 to 10 mph becoming east northeast in the afternoon.
Tonight
A 20 percent chance of showers. Mostly cloudy, with a low around 54. North wind 5 to 10 mph.
Friday
A 10 percent chance of showers before 9am. Partly sunny, with a high near 68. North wind around 10 mph.
Friday Night
Increasing clouds, with a low around 49. North northeast wind around 5 mph.
Saturday
Mostly cloudy, with a high near 65. North northeast wind around 5 mph becoming calm in the afternoon.
Saturday Night
Mostly cloudy, with a low around 48. Calm wind.
Sunday
Mostly sunny, with a high near 67. North northwest wind around 5 mph becoming calm.
Sunday Night
Partly cloudy, with a low around 47. Calm wind.
Monday
A 20 percent chance of showers before noon. Sunny, with a high near 69. Calm wind becoming south southeast around 5 mph.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 52.
Veterans Day
Sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Denison TX
 33.75°N 96.55°W (Elev. 758 ft)
Last Update:
5:06 am CST Nov 5, 2026
Forecast Valid:
7am CST Nov 5, 2026-6pm CST Nov 11, 2026
 
Forecast Discussion
 
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