The St. George Utah Temple, formerly known as the St. George Temple, is a temple of the Church of Jesus Christ of Latter-day Saints in St. George, Utah. Completed in 1877, it was the third temple constructed by the church and the first in Utah, following the westward migration of Mormon pioneers from Nauvoo, Illinois, after the death of church fou…The St. George Utah Temple, formerly known as the St. George Temple, is a temple of the Church of Jesus Christ of Latter-day Saints in St. George, Utah. Completed in 1877, it was the third temple constructed by the church and the first in Utah, following the westward migration of Mormon pioneers from Nauvoo, Illinois, after the death of church founder Joseph Smith.