Affton is a small suburban community located in the southeastern part of St. Louis, Missouri. The area has a humid subtropical climate with hot summers and cold winters. Rainfall is relatively evenly distributed throughout the year. The nearby River Des Peres and Affton Creek are important hydrology constituents in the area. Outdoor recreation opportunities in Affton include the River Des Peres Trail, a popular biking and walking trail that runs along the River Des Peres, and Affton Athletic Association, which offers a variety of sports leagues for both children and adults. There are also several parks in the area, including Ohlendorf Park and Clyde C. Miller Memorial Park, which offer playgrounds, picnic areas, and sports fields.