Whittier, California, located in Los Angeles County, offers a Mediterranean climate characterized by warm, dry summers and mild, damp winters. Summers are typically sunny and hot, with average temperatures in the high 80s to low 90s Fahrenheit. Winters are cooler, with average temperatures ranging from the mid-60s to low 70s. The city experiences minimal rainfall, receiving about 14 inches per year, primarily during the winter months.

Hydrologically, Whittier is situated in the San Gabriel Valley and benefits from the underlying groundwater basin. The groundwater is sourced from local rainfall and imported water supplies, which are managed by the Central Basin Municipal Water District.

Outdoor enthusiasts can enjoy various recreational opportunities in and around Whittier. The city is home to numerous parks and trails, such as Turnbull Canyon, Sycamore Canyon Park, and the Whittier Greenway Trail. These offer opportunities for hiking, biking, and picnicking. Nearby, the Whittier Narrows Recreation Area provides additional outdoor activities like fishing, birdwatching, and boating. Additionally, golfers can visit the Whittier Narrows Golf Course, which offers a challenging 27-hole layout. Overall, Whittier offers a pleasant climate, access to water resources, and a range of outdoor activities for residents and visitors alike.