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Insulation in Lewistown: July highs average about 86°F; January lows average about 18°F.

Weather and your home

In Lewis County, July highs average about 86°F and January lows about 18°F, with roughly 40 inches of rain a year. Long, cold winters put furnaces and pipes to the test.

Storms

Over the last 10 years the National Weather Service recorded hailstorms, damaging thunderstorm winds and flash floods in Lewis County, with hail up to 2.75 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.

Disaster history

Lewis County has had 21 federal disaster declarations in the last 25 years, most often for severe storms; the latest was Severe Storms, Straight-Line Winds, Tornadoes, And Flooding (2026).

Services

Roof repair in Lewistown · AC & heating repair in Lewistown · Plumbing in Lewistown · Electrical in Lewistown · Gutters in Lewistown · Pest control in Lewistown · Lawn care in Lewistown · Pool service in Lewistown · Siding in Lewistown · Windows & doors in Lewistown · Solar in Lewistown · Generators in Lewistown · Insulation in Lewistown · Remodeling in Lewistown · Kitchen remodeling in Lewistown · Bathroom remodeling in Lewistown · Painting in Lewistown · Flooring in Lewistown · Drywall in Lewistown · Concrete & pavers in Lewistown · Fencing in Lewistown · Decks in Lewistown · Tree service in Lewistown · Pressure washing in Lewistown · House cleaning in Lewistown · Junk removal in Lewistown · Garage doors in Lewistown · Appliance repair in Lewistown · Water & mold restoration in Lewistown · Foundation repair in Lewistown · Handyman in Lewistown

Questions

How do I know my home needs insulation?

Uneven rooms, high bills and an attic you can see the joists in are the signs; older homes often have far too little.

What gives the best return?

Attic insulation and air-sealing usually pay back fastest.

These are Lewis County figures — more about homes in Canton.

Nearby

Monticello · La Belle · Ewing · Newark · Knox City · Canton · La Grange · Bethel