About Dexter, MO's Climate & Weather History

Dexter, in Missouri, United States, is home to roughly 8,000 people in the Central Time Zone at 36.8°N latitude.

In 2025, Dexter recorded an average annual temperature of 60°F — about 1.0°F above the 30-year normal of 59°F. The hottest day reached 94°F in July; the coldest was 4°F in February. Total precipitation was 52 inches (near normal). The wettest month was April.