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Insulation in Washougal: July highs average about 79°F; January lows average about 35°F.
In Clark County, July highs average about 79°F and January lows about 35°F, with roughly 67 inches of rain a year.
Over the last 10 years the National Weather Service recorded floods, damaging thunderstorm winds and tornadoes in Clark County. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
Clark County has had 10 federal disaster declarations in the last 25 years, most often for severe storms; the latest was Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (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 Clark County figures — more about homes in Vancouver.
Camas · Vancouver · Battle Ground · North Bonneville · Yacolt · Ridgefield · Stevenson · La Center