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Insulation in Jourdanton: July highs average about 97°F; January lows average about 42°F; the typical home was built around 1983 (41% before 1980).
In Atascosa County, July highs average about 97°F and January lows about 42°F, with roughly 27 inches of rain a year. That much heat keeps air conditioners running hard for months, so a yearly tune-up pays off.
Over the last 10 years the National Weather Service recorded hailstorms, damaging thunderstorm winds and flash floods in Atascosa County, with hail up to 3 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
The typical home in Atascosa County was built around 1983, about 43 years ago, and 41% were built before 1980. Homes that age often need updated wiring, plumbing and roofs.
Atascosa County has had 17 federal disaster declarations in the last 25 years, most often for hurricanes; the latest was Flooding (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 Atascosa County figures — more about homes in Pleasanton.
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