Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72°NLon: 96.67°WElev: 748ft.

Mostly Cloudy

75°F

24°C

Humidity 74%
Wind Speed S 8 mph
Barometer 29.93 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 4 Mar 4:50 pm CST
Extended Forecast for

Grayson County Airport TX

Severe T-storm Watch until March 4, 11:00pm
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until March 4, 11:00pm

    NOW until 11:00pm Wed

    Severe T-storm Watch

  • This Afternoon

    High: 75 °F

    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms after 3am.  Low around 60. South wind 5 to 10 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    T-storms

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly before 9am.  Cloudy, then gradually becoming mostly sunny, with a high near 76. South wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    T-storms
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after midnight.  Mostly cloudy, with a low around 63. South wind around 15 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Chance
    T-storms

  • Friday

    Friday: Showers and thunderstorms, mainly after noon.  High near 77. South wind 15 to 20 mph, with gusts as high as 30 mph.  Chance of precipitation is 90%.

    High: 77 °F

    Chance
    Showers then
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm after midnight.  Low around 54. South wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 20 mph.  Chance of precipitation is 80%.

    Low: 54 °F

    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm.  Mostly cloudy, with a high near 64. North wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.

    High: 64 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of showers.  Mostly cloudy, with a low around 49. North wind 5 to 10 mph.

    Low: 49 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 75. West wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 3am, then a chance of showers and thunderstorms after 3am. Low around 60. South wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and thunderstorms likely, mainly before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 76. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after midnight. Mostly cloudy, with a low around 63. South wind around 15 mph, with gusts as high as 25 mph.
Friday
Showers and thunderstorms, mainly after noon. High near 77. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Friday Night
Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm after midnight. Low around 54. South wind 10 to 15 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Saturday
Showers likely and possibly a thunderstorm before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm. Mostly cloudy, with a high near 64. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 49. North wind 5 to 10 mph.
Sunday
A 20 percent chance of showers. Mostly cloudy, with a high near 68. North wind around 5 mph becoming south in the afternoon.
Sunday Night
A 20 percent chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 55.
Monday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Tuesday
Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 75. Chance of precipitation is 80%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Grayson County Airport TX
 33.71°N 96.66°W (Elev. 797 ft)
5:18 pm CST Mar 4, 2026
5pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
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