There is a desert in California.
California . Though California is well-known for its warm Mediterranean climate , the large size of the state means it can vary from moist temperate rainforest in the north , to arid desert in the interior , as well as snowy alpine in the mountains . The Central Valley is a large , flat valley that dominates the geographical center of the U.S. state of California . San Bernardino County , officially the County of San Bernardino , is a county located in the southern portion of the U.S. state of California .