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Decks in Lithonia: July highs average about 90°F; about 52 inches of rain fall a year.
In DeKalb County, July highs average about 90°F and January lows about 33°F, with roughly 52 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, hailstorms and flash floods in DeKalb County, with hail up to 1.75 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
DeKalb County has had 12 federal disaster declarations in the last 25 years, most often for hurricanes; the latest was Hurricane Isaias (2026).
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Composite costs more up front and needs almost no care; pressure-treated wood is cheaper but needs sealing.
Once a year — loose boards, soft spots and wobbly railings are safety issues.
These are DeKalb County figures — more about homes in Stonecrest.
Stonecrest · Stone Mountain · Pine Lake · Conyers · Avondale Estates · Clarkston · Tucker · Decatur