Grinnell, Iowa has a humid continental climate with four distinct seasons. Summers are typically hot and humid, while winters are cold and snowy. The area's hydrology is primarily influenced by the South Skunk River, which runs through the town. The river provides opportunities for kayaking, fishing, and hiking along its banks. The city also has several parks, including Ahrens Park, which features a playground, picnic areas, and a disc golf course. The nearby Rock Creek Lake State Park offers additional outdoor recreation opportunities, including camping, boating, and fishing. Overall, Grinnell provides a great balance of outdoor activities and small-town charm.