Sussex, in Wisconsin, United States, is home to roughly 10,800 people in the Central Time Zone at 43.1°N latitude.
In 2025, Sussex recorded an average annual temperature of 47°F — about 2.0°F below the 30-year normal of 49°F. The hottest day reached 94°F in June; the coldest was -12°F in February. Total precipitation was 34 inches (near normal). Snowfall totaled 11 inches, below the 49-inch average. The wettest month was July.
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