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

Widespread Rain from Texas to the Central Appalachians; Heavy to Excessive Rainfall in Southern California and the Southwest

Scattered thunderstorms and widespread showers are expected from the Texas coast to the central Appalachians today. Heavy to excessive rainfall will continue in southern California into the Desert Southwest through Saturday. Heavy rain will pose a risk of flash flooding, especially across burn scar and urbanized regions. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

A Few Clouds

57°F

14°C

Humidity 77%
Wind Speed NE 6 mph
Barometer 30.20 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 23 Nov 11:50 am CST
Extended Forecast for

Denison TX

Flood Watch November 23, 06:00pm until November 24, 06:00pm
Click here for hazard details and duration
Flood Watch

  • Today

    Today: Sunny, with a high near 65. East southeast wind around 5 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: A chance of showers, then showers and possibly a thunderstorm after 9pm. Low around 56. East wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 56 °F

    Showers
    Likely then
    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms between noon and 3pm, then a slight chance of showers after 3pm. Some of the storms could produce heavy rainfall. High near 68. East southeast wind 5 to 10 mph becoming south in the afternoon. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    High: 68 °F

    Heavy Rain
    then Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. South wind around 5 mph becoming west northwest after midnight.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 67. Northwest wind around 5 mph.

    High: 67 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42. North wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 55. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 55 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 37. North northeast wind around 5 mph becoming calm.

    Low: 37 °F

    Mostly Clear

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 58. Calm wind becoming south southeast around 5 mph in the morning.

    High: 58 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 65. East southeast wind around 5 mph.
Tonight
A chance of showers, then showers and possibly a thunderstorm after 9pm. Low around 56. East wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms between noon and 3pm, then a slight chance of showers after 3pm. Some of the storms could produce heavy rainfall. High near 68. East southeast wind 5 to 10 mph becoming south in the afternoon. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Monday Night
Mostly clear, with a low around 51. South wind around 5 mph becoming west northwest after midnight.
Tuesday
Sunny, with a high near 67. Northwest wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 42. North wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 55. North wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 37. North northeast wind around 5 mph becoming calm.
Thanksgiving Day
Sunny, with a high near 58. Calm wind becoming south southeast around 5 mph in the morning.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly cloudy, with a high near 60.
Friday Night
A 40 percent chance of showers. Cloudy, with a low around 52.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Denison TX
 33.75°N 96.57°W (Elev. 748 ft)
Last Update:
11:21 am CST Nov 23, 2025
Forecast Valid:
11am CST Nov 23, 2025-6pm CST Nov 29, 2025
 
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