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I remember reading something about there being four seasons in Arizona - Fire, Flood, Mud and Drought... In grad school, spent several days on a field trip in Suguaro National Park (beautiful park). This was in the spring and we were rained on most of the time there. Naturally, the last day we were there was sunny and warm; we started from the relatively warm desert basin and drove up into the mountains looking at vegetation changes at various elevations and eventually had to turn around because of snow. As a young flatlander, I'd never experienced such a thing!