Millstadt, in Illinois, United States, is home to roughly 3,900 people in the Central Time Zone at 38.5°N latitude.
In 2025, Millstadt recorded an average annual temperature of 57°F — right at the 30-year normal of 57°F. The hottest day reached 96°F in July; the coldest was -1°F in February. Total precipitation was 44 inches (wetter than usual). The wettest month was April.
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