About Waukesha, WI's Climate & Weather History

Waukesha is a city of approximately 72,000 people in Wisconsin, United States. Located in the Central Time Zone at 43°N latitude.

In 2025, Waukesha recorded an average annual temperature of 48°F — about 1.5°F below the 30-year normal of 49°F. The hottest day reached 95°F in June; the coldest was -12°F in February. Total precipitation was 31 inches (drier than usual). Snowfall totaled 12 inches, below the 49-inch average. The wettest month was July.