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Decks in Brunswick: July highs average about 86°F; about 45 inches of rain fall a year.
In Frederick County, July highs average about 86°F and January lows about 24°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 Frederick 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.
The typical home in Frederick County was built around 1988, about 38 years ago, and 38% were built before 1980.
Frederick County has had 12 federal disaster declarations in the last 25 years, most often for hurricanes; the latest was Severe Winter Storm (2026).
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Composite costs more up front and needs almost no care; pressure-treated wood is cheaper but needs sealing.
Once a year — loose boards, soft spots and wobbly railings are safety issues.
These are Frederick County figures — more about homes in Frederick.
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