Hartford, Wisconsin has a humid continental climate with hot summers and cold winters. The city is located along the scenic Rock River and has several small streams and wetlands. The hydrology constituents of the area are impacted by agricultural and urban runoff, as well as industrial activity. The city offers several outdoor recreation opportunities for visitors and residents including hiking, biking, fishing, and boating along the river and nearby lakes. The Pike Lake State Park is also located nearby and offers additional opportunities for camping, picnicking, and swimming.