Utah's four-season climate is healthy and invigorating. The state’s elevation ranges from a low of 2,200 feet in southwestern Washington to more than 13,500 feet in the northeastern Uinta Mountains . The average maximum daytime temperature for Utah ’s metropolitan area ranges from 37 degrees in January to 93 degrees in July.
Low humidity and plentiful sunshine are two hallmarks of Utah ’s climate. In Salt Lake County , and many other areas in the state, the summer daytime relative humidity averages less than 30 percent, and sunny skies prevail for an average of 237 days per year. The air quality in the vicinity of Capitol Reef National Park is the best among the lower 48 states.
Annual precipitation varies from less than five inches in Utah ’s arid Great Salt Lake Desert to more than 60 inches in the northern mountain ranges. In the state’s most densely populated counties— Davis , Salt Lake , Utah and Weber—precipitation averages six inches per year. Snow accumulates to depths of 10 feet or more at some Wasatch Mountain ski resorts; at some locations, the season-long snow total will be 40 to 50 feet. The uniquely dry and powdery snow along the Wasatch Front has earned Utah the moniker “The Greatest Snow on Earth®.”- Utah Facts 2006