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Severe Thunderstorms and Heavy Rainfall; Typhoon Watch in Guam and CNMI

Heavy to excessive rainfall will continue through tonight from the Texas Big Bend region into southern Oklahoma. Scattered damaging wind gusts and a few tornadoes may accompany a line of severe thunderstorms that is expected across the Mid-Atlantic into New England Friday. A Typhoon Watch continues for Guam and CNMI as Tropical Storm Champi will strengthen and approach the islands this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Overcast

69°F

21°C

Humidity 96%
Wind Speed N 12 mph
Barometer 30.14 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 15 Oct 9:15 pm CDT
Extended Forecast for

Denison TX

Wind Advisory October 16, 04:00am until October 16, 07:00pm
Click here for hazard details and duration
Wind Advisory

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 1am, then a chance of showers between 1am and 4am. Cloudy, with a low around 53. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Showers
    Likely

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 62. North wind around 20 mph, with gusts as high as 35 mph.

    High: 62 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 63. North wind 5 to 10 mph.

    High: 63 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 43. North northeast wind around 5 mph becoming calm.

    Low: 43 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 68. Calm wind becoming southeast around 5 mph in the morning.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48. Calm wind.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 74. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 74 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53. East southeast wind around 5 mph becoming calm.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm before 1am, then a chance of showers between 1am and 4am. Cloudy, with a low around 53. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 62. North wind around 20 mph, with gusts as high as 35 mph.
Friday Night
Partly cloudy, with a low around 46. North wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 63. North wind 5 to 10 mph.
Saturday Night
Clear, with a low around 43. North northeast wind around 5 mph becoming calm.
Sunday
Sunny, with a high near 68. Calm wind becoming southeast around 5 mph in the morning.
Sunday Night
Mostly clear, with a low around 48. Calm wind.
Monday
Sunny, with a high near 74. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 53. East southeast wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 83.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 85.
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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:
6:06 pm CDT Oct 15, 2026
Forecast Valid:
9pm CDT Oct 15, 2026-6pm CDT Oct 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation