Temperature for May
In Mesa, AZ during May the average high temperature is 92.2°F. The hottest day on record was May 27, 1951 when the temperature hit 110.3°F.
Precipitation for May
In May the average monthly rainfall in Mesa, AZ is 0.06 inches with rain usually falling on between 1 and 2 days. 2012 was the driest May with only 0.00 inches of rain falling, and 1992 was the wettest May with 1.43 inches of rain. The wettest single day in May was 22 May 1992 when 0.47 inches of rain fell.
In May there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in May.