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

60°F

16°C

Humidity 88%
Wind Speed E 8 mph
Barometer 29.99 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 2 Mar 10:15 pm CST
Extended Forecast for

Denison TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. Southeast wind 5 to 15 mph.

    Low: 61 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 80. South wind around 15 mph, with gusts as high as 25 mph.

    High: 80 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: A slight chance of showers between midnight and 3am, then a slight chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 65. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 77. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 62. South wind around 10 mph. Chance of precipitation is 80%.

    Low: 62 °F

    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. South wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 78 °F

    Chance
    T-storms

  • Thursday Night

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

    Low: 65 °F

    Slight Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 79. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    High: 79 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 62. South wind 10 to 15 mph. Chance of precipitation is 80%.

    Low: 62 °F

    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 61. Southeast wind 5 to 15 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 80. South wind around 15 mph, with gusts as high as 25 mph.
Tuesday Night
A slight chance of showers between midnight and 3am, then a slight chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 65. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 77. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm. Low around 62. South wind around 10 mph. Chance of precipitation is 80%.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 78. South wind 10 to 15 mph, with gusts as high as 20 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind 10 to 15 mph, with gusts as high as 20 mph.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 79. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Friday Night
Showers and possibly a thunderstorm. Low around 62. South wind 10 to 15 mph. Chance of precipitation is 80%.
Saturday
Showers and possibly a thunderstorm. High near 71. Chance of precipitation is 80%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers. Mostly cloudy, with a high near 69.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 57.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Denison TX
 33.75°N 96.57°W (Elev. 748 ft)
Last Update:
5:13 pm CST Mar 2, 2026
Forecast Valid:
10pm CST Mar 2, 2026-6pm CDT Mar 9, 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