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Insulation in Graysville: July highs average about 87°F; January lows average about 29°F; the typical home was built around 1986 (42% before 1980).
In Rhea County, July highs average about 87°F and January lows about 29°F, with roughly 59 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, hailstorms and flash floods in Rhea 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 Rhea County was built around 1986, about 40 years ago, and 42% were built before 1980. Homes that age often need updated wiring, plumbing and roofs.
Rhea County has had 15 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 Rhea County figures — more about homes in Dayton.
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