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

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Fair with Haze

70°F

21°C

Humidity 47%
Wind Speed SE 9 mph
Barometer 30.05 in
Dewpoint 49°F (9°C)
Visibility 0.75 mi
Last update 8 Apr 7:55 pm CDT
Extended Forecast for

Denison TX

  • Tonight

    Tonight: Mostly clear, with a low around 58. South southeast wind around 5 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 62. South southeast wind around 10 mph.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. South wind around 10 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 63. South southeast wind 5 to 10 mph.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 79 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: Showers and possibly a thunderstorm. High near 77. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 77 °F

    Showers
    Likely then
    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 67. South wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Low: 67 °F

    T-storms
    Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 58. South southeast wind around 5 mph.
Thursday
Sunny, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 62. South southeast wind around 10 mph.
Friday
Mostly sunny, with a high near 81. South wind around 10 mph.
Friday Night
Partly cloudy, with a low around 63. South southeast wind 5 to 10 mph.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. South southeast wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Sunday
Showers and possibly a thunderstorm. High near 77. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Sunday Night
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 67. South wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Tuesday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 73.
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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:
6:11 pm CDT Apr 8, 2026
Forecast Valid:
8pm CDT Apr 8, 2026-6pm CDT Apr 15, 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