Sullivan is a city of approximately 7,100 people in Missouri, United States. Located in the Central Time Zone at 38.2°N latitude.
In 2025, Sullivan recorded an average annual temperature of 57°F. The hottest temperatures reached 97°F in August; the coolest were -4°F in February. Total precipitation for the year was 42 inches, with the wettest month being April. Snowfall for the year totaled approximately 5 inches.
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