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Insulation in Sumner: July highs average about 88°F; January lows average about 19°F.
In Chariton County, July highs average about 88°F and January lows about 19°F, with roughly 40 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 floods in Chariton County, with hail up to 1.75 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
Chariton County has had 22 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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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 Chariton County figures — more about homes in Salisbury.
Hale · Mendon · Meadville · Rothville · Laclede · Triplett · Wheeling · Brookfield