Lewisville, Ohio is a small town located in Monroe County, in the southeastern part of the state. The climate in Lewisville is considered a humid continental climate, characterized by hot summers and cold winters. Summers are typically warm and humid, with average temperatures in the mid-80s°F (around 30°C) and occasional thunderstorms. Winters are cold, with temperatures often dropping below freezing and snowfall being common.

Hydrology in Lewisville is mainly influenced by the nearby Ohio River, which flows along the western border of the town. The river provides opportunities for fishing, boating, and other water-based activities. Additionally, there are several smaller creeks and streams that run through the area, supporting local wildlife and offering scenic locations for hiking and picnicking.

Outdoor recreation enthusiasts will find plenty of opportunities in Lewisville. The surrounding area is rich in natural beauty, with rolling hills, forests, and parks. Hiking, camping, and bird-watching are popular activities in the nearby Wayne National Forest and the Ohio River Islands National Wildlife Refuge. Fishing enthusiasts can try their luck in the Ohio River and local streams, which are home to various species of fish. Overall, Lewisville offers a peaceful rural setting with ample opportunities to explore and enjoy the outdoors.