With a population of around 8,500, Plymouth sits in Wisconsin, United States. The city operates in the Central Time Zone.
In 2025, Plymouth recorded an average annual temperature of 46°F — about 1.0°F above the 30-year normal of 45°F. The hottest day reached 95°F in June; the coldest was -13°F in January. Total precipitation was 28 inches (near normal). The wettest month was July.
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