There is an average of 2.5 nights of sub lows, 134 nights where the low reaches the freezing mark, 100 days with + highs, and 25 days with + highs. Due to the aridity and hot high-altitude sun, there are only 32 days with maxima below and only one per year with a maximum below , and the annual diurnal temperature variation is , reaching in summer. The record high temperature of occurred on July 10, 2002; the record low of was recorded on December 22, 1990 and December 27, 1988.