Wren, Ohio is a small village located in Van Wert County in the northwestern part of the state. The climate in Wren is classified as humid continental, characterized by hot summers and cold winters. Average temperatures range from the mid-80s Fahrenheit in summer to the low 20s in winter. Precipitation is fairly evenly distributed throughout the year.

In terms of hydrology constituents, Wren is not situated near any major rivers or large bodies of water. However, there are several smaller creeks and streams that flow through the area, contributing to the overall hydrology of the region.

Despite its small size, Wren offers a good range of outdoor recreation opportunities. The village is surrounded by beautiful countryside, making it an ideal location for hiking, biking, and nature walks. The nearby Van Wert County Reservoir also provides opportunities for boating, fishing, and picnicking. Additionally, the region is known for its excellent birdwatching, with numerous species of birds being spotted throughout the year.

In summary, Wren, Ohio experiences a typical continental climate, with a range of temperatures throughout the year. While not located near major bodies of water, the village offers outdoor enthusiasts various activities like hiking, biking, fishing, and birdwatching in its picturesque surroundings.