Prepare for extreme heat with summer temperatures regularly exceeding Idaho's brief hot periods, requiring comprehensive cooling strategies and UV protection for year-round sun exposure. Learn desert safety including water consumption needs of 1+ gallons daily and heat exhaustion recognition, as Arizona's low humidity creates rapid dehydration compared to Idaho's mountain air. Stock emergency water supplies for vehicle breakdowns in remote desert areas, as Arizona's vast distances between communities can be life-threatening unlike Idaho's mountain rescue capabilities. Research flash flood dangers in desert washes that appear dry but become deadly during rare intense storms, requiring different emergency awareness than Idaho's gradual snowmelt flooding patterns.