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Insulation in New Haven: July highs average about 87°F; January lows average about 25°F.
In Nelson County, July highs average about 87°F and January lows about 25°F, with roughly 51 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, hailstorms and flash floods in Nelson County, with hail up to 2.5 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
Nelson County has had 17 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 Nelson County figures — more about homes in Bardstown.
Hodgenville · Raywick · Loretto · Bardstown · St. Mary · Lebanon Junction · Elizabethtown · Lebanon