Chatsworth, California has a Mediterranean climate characterized by hot summers and mild winters. The area receives little rainfall, with most precipitation occurring in the winter months. Hydrology constituents in Chatsworth include the Los Angeles River, which flows through the area, and several smaller creeks and tributaries. Outdoor recreation opportunities in Chatsworth include hiking and mountain biking in the nearby Santa Susana Mountains, as well as exploring the nearby Santa Monica Mountains National Recreation Area. The Chatsworth Reservoir also offers opportunities for fishing and boating.