About Saint Ann, MO's Climate & Weather History

Saint Ann is a city of approximately 13,000 people in Missouri, United States. Located in the Central Time Zone at 38.7°N latitude.

In 2025, Saint Ann recorded an average annual temperature of 57°F. The hottest temperatures reached 98°F in July; the coolest were -2°F in February. Total precipitation for the year was 42 inches, with the wettest month being April. Snowfall for the year totaled approximately 8 inches.