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Pressure washing in Longview: July highs average about 76°F; about 78 inches of rain fall a year.
In Cowlitz County, July highs average about 76°F and January lows about 34°F, with roughly 78 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 floods, tornadoes and damaging thunderstorm winds in Cowlitz County, with hail up to 0.25 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
Cowlitz County has had 11 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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Once a year for siding and walkways in most climates; more where it is humid.
Yes, on soft wood and some siding — pros use soft washing there.
Kelso · Castle Rock · Kalama · Vader · Woodland · Cathlamet · Toledo · Winlock