:. Phoenix May Weather .:

Phoenix May Weather is great, and the daily highs continue climbing, reaching the mid 30's by the end of the month. May weather is low humidity, with a low chance of rain. A typical Memorial Day is 34C, very low humidity, and sunny, probably the best three day holiday weekend for Vegas Weather. Phoenix weather in May is great for swimming, golf, walking, running, and just about anything you would want to do outdoors.