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.

Overcast

70°F

21°C

Humidity 94%
Wind Speed S 16 mph
Barometer 29.99 in
Dewpoint 68°F (20°C)
Visibility 5.00 mi
Last update 12 Apr 5:50 pm CDT
Extended Forecast for

Denison TX

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 68. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers before 10am. Partly sunny, with a high near 82. South wind around 15 mph, with gusts as high as 25 mph.

    High: 82 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 68. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 79. South wind around 15 mph, with gusts as high as 25 mph.

    High: 79 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind around 15 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    High: 78 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 65. South wind around 10 mph.

    Low: 65 °F

    Chance
    T-storms

  • Thursday

    Thursday: Sunny, with a high near 85. South southwest wind around 10 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 68. South wind 10 to 15 mph.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 68. South wind around 15 mph, with gusts as high as 25 mph.
Monday
A 20 percent chance of showers before 10am. Partly sunny, with a high near 82. South wind around 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 68. South wind around 15 mph, with gusts as high as 25 mph.
Tuesday
Mostly cloudy, with a high near 79. South wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind around 15 mph, with gusts as high as 20 mph.
Wednesday
Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 78. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 65. South wind around 10 mph.
Thursday
Sunny, with a high near 85. South southwest wind around 10 mph.
Thursday Night
Partly cloudy, with a low around 68. South wind 10 to 15 mph.
Friday
Partly sunny, with a high near 82.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 48.
Sunday
Mostly sunny, with a high near 68.
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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:
3:08 pm CDT Apr 12, 2026
Forecast Valid:
6pm CDT Apr 12, 2026-6pm CDT Apr 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation