Every forecast across Southern Arizona,
highway-clear.

Every Arizona region shares one system — the same maps, the same live radar, the same climate record. Tucson sits two thousand feet higher than Phoenix and gets nearly twice the monsoon rain, and the sky islands above it stack a Canadian forest on top of a Sonoran desert in twenty-seven miles — Mount Lemmon can be snowed in while the valley floor is at 80°F. The summer storms come up off the Sierra Madre and they arrive on schedule.