Northfield, Ohio experiences a humid continental climate, characterized by four distinct seasons. Summers are warm and humid, with temperatures reaching highs in the mid-80s°F. Winters are cold and snowy, with temperatures dropping to the low-20s°F. The area receives an average annual precipitation of around 42 inches, evenly distributed throughout the year.

Northfield is located near the Cuyahoga River, which provides hydrology constituents to the region. The river offers opportunities for fishing, kayaking, and canoeing. The surrounding area is also home to several lakes and reservoirs, such as Sagamore Lake and Macedonia Lake, which provide additional water-based recreation.

Outdoor enthusiasts can explore the nearby Cuyahoga Valley National Park, offering hiking and biking trails, as well as camping and wildlife viewing. The park is also known for its scenic train rides and historic sites, providing a diverse range of outdoor recreation opportunities for visitors and residents of Northfield, Ohio.