Mellen, Wisconsin is a small town located in Ashland County in the northern part of the state. The climate in Mellen is classified as humid continental, characterized by warm summers and cold winters. Average temperatures range from the low 20s (°F) in January to the mid-70s (°F) in July, with annual precipitation around 32 inches.

The town is surrounded by a wealth of natural resources, including lakes, rivers, and forests. The hydrology constituents of Mellen are primarily made up of the Bad River and its tributaries, providing opportunities for fishing, boating, and kayaking. In addition, nearby Lake Superior offers a picturesque setting for various water activities.

Outdoor recreation opportunities in Mellen include hiking and camping in the Chequamegon-Nicolet National Forest, which covers a vast area nearby. There are numerous trails for hiking and biking, as well as opportunities for hunting and wildlife viewing. The area is also known for its excellent snowmobiling and cross-country skiing trails during the winter months.

Overall, Mellen, Wisconsin, offers a diverse range of outdoor recreation opportunities, making it an attractive destination for nature enthusiasts and outdoor adventurers.