De Soto, in Illinois, United States, is home to roughly 1,600 people in the Central Time Zone at 37.8°N latitude.
In 2025, De Soto recorded an average annual temperature of 58°F — about 1.6°F above the 30-year normal of 56°F. The hottest day reached 96°F in August; the coldest was 2°F in February. Total precipitation was 44 inches (near normal). The wettest month was April.
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