Located in Norfolk County, Massachusetts, Walpole experiences a humid continental climate characterized by warm summers and cold winters. Summers typically see temperatures ranging from 70°F to 90°F, while winters average between 20°F and 40°F. Precipitation is evenly distributed throughout the year, with an average annual rainfall of 50 inches and snowfall of 45 inches.

Walpole is home to the Neponset River, which provides a vital hydrological element. This scenic river runs through the town, offering opportunities for various water activities such as kayaking, fishing, and boating. Additionally, there are numerous ponds and lakes in the area, including Bird Pond and Willett Pond, which provide additional recreational possibilities.

The town boasts an extensive park system, including Francis William Bird Park and Adams Farm, which offer picturesque settings for hiking, picnicking, and nature exploration. Furthermore, Walpole has several well-maintained golf courses, such as the Walpole Country Club, allowing residents and visitors to enjoy outdoor leisure activities.

In summary, Walpole, Massachusetts, experiences a moderate climate with distinct seasons. Its hydrology constituents include the Neponset River, ponds, and lakes, which offer various water-based recreational opportunities. The town's park system and golf courses further enhance the outdoor recreation options available to residents and visitors.