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Insulation in Norris: July highs average about 86°F; January lows average about 28°F; the typical home was built around 1971 (61% before 1980).
In Anderson County, July highs average about 86°F and January lows about 28°F, with roughly 58 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, hailstorms and flash floods in Anderson 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.
The typical home in Anderson County was built around 1971, about 55 years ago, and 61% were built before 1980. Homes that age often need updated wiring, plumbing and roofs.
Anderson County has had 14 federal disaster declarations in the last 25 years, most often for severe storms; the latest was Severe Winter Storm (2026).
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Uneven rooms, high bills and an attic you can see the joists in are the signs; older homes often have far too little.
Attic insulation and air-sealing usually pay back fastest.
These are Anderson County figures — more about homes in Oak Ridge.
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