Decatur, Ohio is a small town located in the southwestern part of the state. The climate is considered humid continental, with warm summers and cold winters. The town is situated near the Scioto River, which provides a source of water for the community. Hydrology constituents in the area mostly consist of agricultural runoff, which can lead to issues with water quality. Outdoor recreation opportunities in Decatur include hiking and biking trails, as well as fishing and boating on the Scioto River. The town is also home to several parks and green spaces, including the popular Decatur Community Park.