Stockton has a hot-summer Mediterranean climate (Köppen: "Csa"), with hot, dry summers and mild winters. In an average year, about eighty percent of the of precipitation falls from October through April. Located in the Central Valley, the temperatures range is much greater than in the nearby Bay Area. Tule fog blankets the area during some winter days. Stockton lies in the fertile heart of the California Mediterranean climate prairie delta, about equidistant from the Pacific Ocean and the Sierra Nevada. The intermediate climate between the coast and the central valley gives a similar climate to Badajoz, Spain.