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Generators in Oconomowoc Lake: Waukesha County has seen hailstorms and damaging thunderstorm winds in the last 10 years, with hail up to 2.5 inches.

Weather and your home

In Waukesha County, July highs average about 82°F and January lows about 12°F, with roughly 36 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 Waukesha County, with hail up to 2.5 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.

Disaster history

Waukesha County has had 8 federal disaster declarations in the last 25 years, most often for severe storms; the latest was Severe Storms, Tornadoes, And Flooding (2026).

Services

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Questions

What size generator do I need?

Enough for the fridge, heating or cooling, lights and medical equipment; the pro sizes it from what you want running.

Standby or portable?

A standby generator starts on its own in an outage; portable is cheaper but has to be wheeled out and fuelled.

These are Waukesha County figures — more about homes in Waukesha.

Nearby

Oconomowoc · Nashotah · Chenequa · Delafield · Summit · Lac La Belle · Hartland · Dousman