Temperature for August
In Mesa, AZ during August the average high temperature is 101.2°F. The hottest day on record was August 5, 2010 when the temperature hit 120.2°F.

In Mesa, AZ during August the average high temperature is 101.2°F. The hottest day on record was August 5, 2010 when the temperature hit 120.2°F.
In August the average monthly rainfall in Mesa, AZ is 0.25 inches with rain usually falling on between 5 and 6 days. 2012 was the driest August with only 0.00 inches of rain falling, and 1990 was the wettest August with 3.44 inches of rain. The wettest single day in August was 14 August 1990 when 1.10 inches of rain fell.
There are thunderstorms on between 4 and 5 days in August.