Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72° N Lon: 96.67° W Elev: 748 ft.

Fair

84°F

29°C

Humidity 70%
Wind Speed S 10 mph
Barometer 30.00 in
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Heat Index90°F (32°C)
Last update 1 Jun 9:50 am CDT
Detailed forecast for

Grayson County

Today
Sunny. Highs in the mid 90s. South winds around 5 mph.
Tonight
Mostly clear. Lows in the lower 70s. Southeast winds around 5 mph.
Tuesday
Sunny. A 20 percent chance of showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. Northeast winds 5 to 10 mph.
Tuesday Night
Partly cloudy with a 20 percent chance of showers and thunderstorms in the evening, then mostly cloudy after midnight. Lows around 70. East winds 5 to 10 mph.
Wednesday
Mostly sunny. Highs in the mid 80s. East winds 5 to 10 mph.
Wednesday Night
Partly cloudy. Lows in the upper 60s.
Thursday
Partly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent.
Thursday Night
Mostly cloudy with a 50 percent chance of showers and thunderstorms. Lows around 70.
Friday
Mostly cloudy in the morning, then becoming partly sunny. Showers likely with a chance of thunderstorms. Highs in the mid 80s. Chance of rain 60 percent.
Friday Night
Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 70s. Chance of rain 60 percent.
Saturday
Mostly cloudy in the morning, then becoming partly sunny. Showers likely with a chance of thunderstorms. Highs in the mid 80s. Chance of rain 70 percent.
Saturday Night
Partly cloudy in the evening, then becoming mostly cloudy. A 50 percent chance of showers and thunderstorms. Lows in the lower 70s.
Sunday
Partly sunny with a 40 percent chance of showers and thunderstorms. Highs in the upper 80s.



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609 AM CDT Mon Jun 1 2026
 
 

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