| Phoenix is one of the driest metros, but it receives a lot more than .3 inches annually. Phoenix receives about 8.55 inches annually. In fact, Phoenix receives 1.13 inches on average in the month of March alone, so .3 inches is clearly not correct.
http://www.weather.com/outlook/travel/businesstraveler/wxclimatology/monthly/graph/USAZ0166?from=36hr_bottomnav_undeclared |