1. (Hollering): “DON’T FORGET YOUR JACKET!” (when the outside temperature cools off to 78 degrees).
Whether we live in the Sonoran Desert, a northern high-altitude forest, or one of the six or so ecosystems in between, Arizonans wear a jacket when it’s cold. “Cold” means 78 degrees and lower. Conversely, we wear shorts when it’s 20 degrees or warmer. Flip-flops are acceptable year-round footwear.