Henley, Missouri is a small town located in Cole County with a population of around 200 people. The town experiences a humid subtropical climate with hot summers and cold winters, and precipitation is fairly evenly distributed throughout the year. The neighboring Moreau River provides the residents with a source of drinking water, but it is also subject to contamination from agricultural runoff and other pollutants. Outdoor recreation opportunities in the area include fishing and boating on the Moreau River, hiking and camping in nearby state parks, and hunting in the surrounding rural areas.