West Unity is a small village located in Williams County, Ohio. It experiences a humid continental climate, characterized by hot summers and cold winters. The average temperature in summer ranges from 70°F to 85°F, while winter temperatures can drop to 20°F to 35°F. Precipitation is evenly distributed throughout the year, with an annual average of around 36 inches.

The village is situated near the Tiffin River, a tributary of the Maumee River. The hydrology constituents of the area include streams, creeks, and wetlands, which contribute to the overall water resources of the region. These water bodies provide habitat for various aquatic species and offer opportunities for fishing and boating.

Outdoor recreation enthusiasts can explore the nearby 1,000-acre Harrison Lake State Park, situated just a few miles north of West Unity. The park offers activities such as hiking, camping, picnicking, and swimming in the summer. Fishing is also popular in the park's 125-acre Harrison Lake, which is stocked with various species of fish. The park's diverse ecosystem, consisting of woodlands, wetlands, and prairies, provides visitors with opportunities to observe wildlife and enjoy nature.