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Insulation in Box Elder: July highs average about 85°F; January lows average about 12°F.

Weather and your home

In Pennington County, July highs average about 85°F and January lows about 12°F, with roughly 19 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 floods in Pennington County, with hail up to 4.5 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.

Disaster history

Pennington County has had 13 federal disaster declarations in the last 25 years, most often for wildfires; the latest was Straight-Line Winds (2026).

Services

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

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 Pennington County figures — more about homes in Rapid City.

Nearby

Rapid City · New Underwood · Summerset · Piedmont · Hermosa · Keystone · Hill City · Sturgis