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Windows & doors in Duluth: Gwinnett County has seen damaging thunderstorm winds and hailstorms in the last 10 years, with hail up to 2.5 inches.
In Gwinnett County, July highs average about 89°F and January lows about 32°F, with roughly 53 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, hailstorms and flash floods in Gwinnett County, with hail up to 2.5 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
Gwinnett County has had 10 federal disaster declarations in the last 25 years, most often for hurricanes; the latest was Hurricane Isaias (2026).
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Where storms are common, impact-rated windows and doors protect the home and can lower insurance; elsewhere, efficient glass cuts energy bills.
Most last 20–30 years; drafts, fogging between panes and hard-to-open sashes say it is time.
These are Gwinnett County figures — more about homes in Peachtree Corners.
Berkeley Lake · Johns Creek · Peachtree Corners · Norcross · Suwanee · Lilburn · Alpharetta · Sugar Hill