The upper elevations of the Palomar Mountain Range have notably different habitats than its lower elevation foothills. The lower regions are in the California montane chaparral and woodlands sub-ecoregion, adapted to the xeric/dry Mediterranean climate with chaparral and woodlands flora. The higher regions are in the California mixed evergreen forest sub-ecoregion, with California black oaks, closed-cone pines, firs, and other California oaks and conifers. Higher elevations receive considerably more moisture than the coastal and inland valley lower slopes, with of precipitation. They can also receive snow from winter storms.