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Decks in Avoca: July highs average about 82°F; about 37 inches of rain fall a year.
In Iowa County, July highs average about 82°F and January lows about 10°F, with roughly 37 inches of rain a year. Long, cold winters put furnaces and pipes to the test.
Over the last 10 years the National Weather Service recorded damaging thunderstorm winds, hailstorms and tornadoes in Iowa 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.
Iowa County has had 10 federal disaster declarations in the last 25 years, most often for severe storms; the latest was Severe Storms, Tornadoes, And Flooding (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 Iowa County figures — more about homes in Dodgeville.
Muscoda · Lone Rock · Highland · Richland Center · Blue River · Spring Green · Boaz · Cobb