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Insulation in Kennewick: July highs average about 90°F; January lows average about 28°F.
In Benton County, July highs average about 90°F and January lows about 28°F, with roughly 8 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, flash floods and hailstorms in Benton County, with hail up to 1 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
Benton County has had 9 federal disaster declarations in the last 25 years, most often for floods; the latest was Severe Storms, Straight-Line Winds, Flooding, Landslides, And Mudslides (2025).
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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.
Pasco · Richland · West Richland · Benton City · Mesa · Prosser · Grandview · Connell