Catlett, Virginia is a small community located in Fauquier County. The climate in Catlett is classified as humid subtropical, with hot summers and mild winters. The area is fed by several freshwater streams, including Cedar Run and Broad Run, which eventually flow into the Chesapeake Bay. The hydrology constituents of Catlett include sediment, nutrients, and bacteria, which can affect the water quality of local streams and ultimately impact the health of the Chesapeake Bay. Outdoor recreation opportunities in Catlett include hiking, fishing, and nature observation in nearby parks and wildlife areas, such as Conway Robinson State Forest and the Northern Virginia Regional Park Authority's Bull Run Mountains Natural Area Preserve.