I grew up in Tucson, and we did get occasional snow -- a few flakes were enough to panic the entire population. When we lived in Douglas, which is much higher even though it's on the southern border of the state, we had snow at least once a year. It looked lovely in the morning and usually melted by lunchtime. One year we had enough snow, along with a very hard frost, to kill all of the trees in town. Driving that day was *not* fun!