Temescal Valley (Temescal, Spanish for “sweat lodge”) is a census-designated place in Riverside County, California. Temescal Valley sits at an elevation of 1,138 feet (347 m). The 2010 United States census reported Temescal Valley’s population was 22,535.

Temescal Valley takes its pronounce from the Rancho Temescal received by Leandro Serrano. Serrano normal the written access of the priest of the Mission San Luis Rey de Francia, or of the military commander of San Diego, to fill the five square league Rancho Temescal upon land belonging to Mission of San Luis Rey. He took possession in roughly 1818 or 1819 under a grant utter by Governor José María de Echeandía to Leandro Serrano. The Serrano Boulder (California Historical Landmark (#185), marks the site of the first home erected by Leandro Serrano not quite May 1824. The grant extended along the Temescal Valley south of gift day Corona and encompassed El Cerrito and Lee Lake. The Serrano intimates held the house until they floating the court war validating their title to the house in 1866. Meanwhile squatters settled upon the estate in anticipation of this repercussion in 1855.

In 1857, the Temescal Station of the Butterfield Overland Mail stage line was established five miles north of the Temescal Hot Springs, ten miles north of Rancho La Laguna station and twenty miles south of the Chino Rancho station. The Temescal Overland station was “at the foot of the Temescal hills, a splendid place to camp, wood and water plenty, and protected from the winds.” Around this location the settlement of Temescal grew greater than the neighboring few decades. By 1860, Greenwade’s Place in Temescal Canyon, 3 miles north of the theater station, was a polling place for southwestern San Bernardino County. It was a Post Office from February 12 until November 12, 1861 as soon as the American Civil War shut beside the Butterfield stage operations.

In 1866, the Temescal School District was organized, the fifth in San Bernardino County. Its school home was built below a huge sycamore tree and served until 1889, when a other building took its place in the early 1900s. During the 1870s, orchards and bee hives began to replace cattle and sheep ranching. The bees were first brought into the valley in the to the front seventies and became an important source of pension in the valley. From October 29, 1874, Temescal over had its own state office.