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Insulation in Henderson: July highs average about 89°F; January lows average about 26°F; the typical home was built around 1980 (49% before 1980).
In Caroline County, July highs average about 89°F and January lows about 26°F, with roughly 45 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, tornadoes and flash floods in Caroline County, with hail up to 1.5 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
The typical home in Caroline County was built around 1980, about 46 years ago, and 49% were built before 1980. Homes that age often need updated wiring, plumbing and roofs.
Caroline County has had 14 federal disaster declarations in the last 25 years, most often for hurricanes; 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 Caroline County figures — more about homes in Denton.
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