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Insulation in Jellico: July highs average about 84°F; January lows average about 26°F; the typical home was built around 1981 (48% before 1980).
In Campbell County, July highs average about 84°F and January lows about 26°F, with roughly 56 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, hailstorms and flash floods in Campbell 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 Campbell County was built around 1981, about 45 years ago, and 48% were built before 1980. Homes that age often need updated wiring, plumbing and roofs.
Campbell 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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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 Campbell County figures — more about homes in La Follette.
La Follette · Jacksboro · Winfield · Caryville · Oneida · Rocky Top · Huntsville · Norris