Allegan, in Michigan, United States, is home to roughly 5,100 people in the Eastern Time Zone at 42.5°N latitude.
In 2025, Allegan recorded an average annual temperature of 50°F — right at the 30-year normal of 49°F. The hottest day reached 95°F in June; the coldest was -6°F in January. Total precipitation was 33 inches (near normal). The wettest month was December.
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