Phoenix Weather In May

Phoenix May Weather see the beginning of the hot season, especially by the end of the month. Temperatures as high as 114°F have been recorded, and the average is 94, so you may encounter days that are uncomfortably hot.

Rain is rare, so there is little chance that your outdoor fun will be cancelled by rain. You can be 99% sure that the Diamondbacks will not be rained out.

Phoenix Weather in May is warmer, on average, by the end of the month than it is the beginning of the month.