The Santa Ana winds are strong, extremely dry offshore winds that characteristically sweep through in Southern California and northern Baja California in late fall and winter. Temperature-wise, they can range from hot to cold, depending on the prevailing temperatures in the source regions, the Great Basin and upper Mohave Desert.
There are claims that the original form is Santana winds, from the Spanish vientos de Satán ("winds of Satan".) According to the Los Angeles Almanac: "The original spelling of the name of the winds is unclear, not to mention the origin. The name Santana Winds is said to be traced to Spanish California, when the winds were called devil winds due to their heat.
There are numerous wonderful popular references to the Santa Ana winds on the Wikipedia page concering them...worth checking out.