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In Sumner County, July highs average about 89°F and January lows about 28°F, with roughly 53 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, flash floods and hailstorms in Sumner County, with hail up to 2 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
The typical home in Sumner County was built around 1997, about 29 years ago, and 31% were built before 1980.
Sumner County has had 16 federal disaster declarations in the last 25 years, most often for severe storms; the latest was Severe Winter Storm (2026).
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These are Sumner County figures — more about homes in Hendersonville.
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