Hilliard, Ohio is a charming suburb located within Franklin County. The climate in Hilliard is considered continental, with warm summers and cold winters. Average temperatures range from the mid-80s°F (29°C) during summer to the mid-20s°F (-4°C) in winter. Precipitation is evenly distributed throughout the year, with an average of 40 inches (102 cm) annually.

The hydrology constituents of Hilliard are primarily influenced by the Scioto River, which runs adjacent to the city. This river contributes to the local water supply and provides opportunities for various recreational activities such as fishing, boating, and kayaking. Additionally, Hilliard is known for its numerous parks and green spaces, including Roger A. Reynolds Municipal Park and Heritage Trail Park. These parks offer residents and visitors alike opportunities for hiking, picnicking, and enjoying nature.

Other popular outdoor recreational activities in Hilliard include golfing at Heritage Golf Club, playing sports at local fields, and exploring the many walking and biking trails throughout the community. Overall, Hilliard provides a pleasant climate, access to the Scioto River, and a range of outdoor recreational opportunities for its residents and visitors to enjoy.