Temperature for May
In Phoenix, AZ during May the average high temperature is 95.8°F. The hottest day on record was May 29, 1983 when the temperature hit 113.0°F.

In Phoenix, AZ during May the average high temperature is 95.8°F. The hottest day on record was May 29, 1983 when the temperature hit 113.0°F.
In May the average monthly rainfall in Phoenix, AZ is 0.27 inches with rain usually falling on between 1 and 2 days. 1978 was the driest May with only 0.00 inches of rain falling, and 1976 was the wettest May with 1.55 inches of rain. The wettest single day in May was 5 May 1976 when 0.91 inches of rain fell.
There are thunderstorms on between 1 and 2 days in May.