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Plumbing in Gaithersburg: winter lows around 25°F mean exposed pipes can freeze and burst; 52% of homes in Montgomery County were built before 1980, when galvanized and older pipes were common; flash floods here can back up drains.
In Montgomery County, July highs average about 87°F and January lows about 25°F, with roughly 45 inches of rain a year.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, floods and flash floods in Montgomery County, with hail up to 2 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
The typical home in Montgomery County was built around 1978, about 48 years ago, and 52% were built before 1980. Homes that age often need updated wiring, plumbing and roofs.
Montgomery 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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Insulate pipes in crawl spaces and outside walls, drip faucets on the coldest nights, and know where your main shut-off is.
Galvanized steel and polybutylene pipes are past their life in most homes — low pressure, rusty water or repeated leaks are the signs.
Yes if water is spreading or near electrics — turn off the main and choose Emergency when you book; we call you at the first opening.
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