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Windows & doors in Grand Isle: Jefferson Parish has seen flash floods and damaging thunderstorm winds in the last 10 years, with hail up to 1.5 inches.
In Jefferson Parish, July highs average about 91°F and January lows about 45°F, with roughly 64 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 flash floods, damaging thunderstorm winds and tornadoes in Jefferson Parish, 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.
Jefferson Parish has had 39 federal disaster declarations in the last 25 years, most often for hurricanes; the latest was Severe Winter Storm (2026).
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Where storms are common, impact-rated windows and doors protect the home and can lower insurance; elsewhere, efficient glass cuts energy bills.
Most last 20–30 years; drafts, fogging between panes and hard-to-open sashes say it is time.
These are Jefferson Parish figures — more about homes in Kenner.
Golden Meadow · Jean Lafitte · Lockport · Houma · Gretna · Westwego · Harahan · Kenner