Alleman, Iowa is a small town located in Polk County. The climate in Alleman is characterized by warm summers and cold winters, with an average annual temperature of 49°F. The town has a humid continental climate with precipitation evenly distributed throughout the year. Alleman is located near the Skunk River and Walnut Creek, which are important hydrological constituents of the area. Outdoor recreation opportunities in Alleman include fishing, boating, and hiking at nearby Saylorville Lake and Big Creek State Park. The town also has a community park with a playground, basketball court, and picnic area.