Garnavillo, Iowa is a small town located in Clayton County, Iowa. The town has a humid continental climate with hot summers and cold winters. The area is characterized by rolling hills and numerous small streams. These streams are part of the Upper Mississippi River watershed and are important hydrological constituents. Outdoor recreation opportunities in Garnavillo include fishing, hunting, hiking, and camping. The town is home to the Yellow River State Forest, which offers miles of hiking trails, picnic areas, and a lake for fishing and boating. Additionally, the nearby Mississippi River provides opportunities for boating, kayaking, and fishing.