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In Grayson County, July highs average about 94°F and January lows about 33°F, with roughly 41 inches of rain a year.
Over the last 10 years the National Weather Service recorded hailstorms, damaging thunderstorm winds and flash floods in Grayson County, with hail up to 3.5 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
Grayson County has had 14 federal disaster declarations in the last 25 years, most often for hurricanes; the latest was Severe Winter Storms (2021).
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These are Grayson County figures — more about homes in Sherman.
Sherman · Denison · Pottsboro · Southmayd · Dorchester · Howe · Bells · Sadler