Milledgeville, Ohio is a small rural community located in Fayette County. It experiences a humid continental climate, characterized by hot summers and cold winters. Average high temperatures in summer range from 80-85°F, while winter temperatures can drop as low as 20-25°F. Precipitation is evenly distributed throughout the year, with an average annual rainfall of around 40 inches.

The hydrology constituents in Milledgeville are influenced by the Paint Creek watershed, which runs through the area. This watershed provides abundant water resources for the community, supporting agricultural activities and local ecosystems.

Outdoor recreation opportunities in Milledgeville are plentiful. The Paint Creek State Park, situated nearby, offers various activities such as camping, fishing, boating, and hiking. The park boasts several trails, including the 3.3-mile Paint Creek Lake Trail that winds around the lake and offers scenic views. Wildlife enthusiasts can enjoy birdwatching and observe native species in their natural habitat. Additionally, the park hosts seasonal events and provides facilities for picnicking and swimming, making it a popular recreational destination for residents and visitors alike.