Onawa, Iowa is a small town located in Monona County. It experiences a humid continental climate, characterized by hot summers and cold winters. Average temperatures range from the mid-80s (Fahrenheit) in summer to the mid-20s in winter. The area receives about 30 inches of precipitation annually, with rainfall spread fairly evenly throughout the year.

Onawa is situated on the banks of the Missouri River, offering scenic views and recreational activities such as boating, fishing, and water sports. Additionally, nearby Loess Hills provides opportunities for hiking, camping, and wildlife observation. The surrounding countryside is known for its rolling hills and picturesque landscapes, making it a favorable destination for nature enthusiasts.