The NAM time-height section below pretty much tells the story. We have some upper-level moisture moving through the area today, which will lead to some mid-and-high clouds at times. After that, the warm, dry southerlies are in firm control through Saturday.
By late October standards, temperatures will be mild through the period, with temperatures on the top of Mt. Baldy (11,000 ft) rising today and remaining in the low-to-mid 40s through Saturday.
High temperatures at the Salt Lake City airport today, Friday, and Saturday should be in the 70s. Temperatures on Friday and Saturday will likely be in the mid 70s and could approach the records for each day (78ºF in both instances).