August weather in Mesa, AZ
The average temperature in Mesa in August is 91.5°F (78.4°F–104.6°F). Average precipitation: 1.29 inches.
August is a summer month in Mesa, and is warmer than the annual average of 72.3°F. Daily temperatures swing about 26.2°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 13h 14m. For travel, August is hot.
Avg High
104.6°F
Avg Low
78.4°F
Precipitation
1.29 in
Daylight
13h 14m
August records in Mesa
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 113.0°F (2020) | 73.9°F (2003) | 0.33 in (2007) |
| August 2 | 113.0°F (2011) | 71.1°F (2005) | 0.20 in (2005) |
| August 3 | 113.0°F (2024) | 70.0°F (2005) | 0.14 in (2024) |
| August 4 | 114.1°F (2024) | 73.0°F (2003) | 0.83 in (2017) |
| August 5 | 114.1°F (2025) | 73.0°F (2006) | 0.03 in (2017) |
| August 6 | 116.1°F (2025) | 72.0°F (2013) | 0.19 in (2013) |
| August 7 | 117.0°F (2025) | 71.1°F (2013) | 0.44 in (2005) |
| August 8 | 115.0°F (2012) | 64.9°F (2009) | 0.25 in (2005) |
| August 9 | 114.1°F (2012) | 69.1°F (2013) | 0.95 in (2005) |
| August 10 | 115.0°F (2003) | 70.0°F (2018) | 2.01 in (2018) |
| August 11 | 113.0°F (2012) | 70.0°F (2013) | 1.50 in (2021) |
| August 12 | 114.1°F (2007) | 71.1°F (2021) | 1.43 in (2021) |
| August 13 | 117.0°F (2012) | 70.0°F (2014) | 0.50 in (2014) |
| August 14 | 115.0°F (2020) | 70.0°F (2008) | 1.67 in (2021) |
| August 15 | 113.0°F (2015) | 70.0°F (2005) | 0.58 in (2025) |
| August 16 | 113.0°F (2013) | 71.1°F (2004) | 0.32 in (2023) |
| August 17 | 114.1°F (2020) | 69.1°F (2021) | 0.87 in (2021) |
| August 18 | 113.0°F (2020) | 68.0°F (2017) | 0.59 in (2024) |
| August 19 | 113.0°F (2020) | 71.1°F (2004) | 0.75 in (2022) |
| August 20 | 111.0°F (2019) | 69.1°F (2014) | 0.02 in (2016) |
| August 21 | 113.0°F (2019) | 68.0°F (2006) | 2.27 in (2006) |
| August 22 | 111.9°F (2011) | 66.9°F (2014) | 0.38 in (2012) |
| August 23 | 114.1°F (2011) | 68.0°F (2014) | 0.48 in (2012) |
| August 24 | 114.1°F (2020) | 66.0°F (2002) | 1.54 in (2006) |
| August 25 | 111.9°F (2011) | 66.0°F (2002) | 0.40 in (2008) |
| August 26 | 115.0°F (2011) | 64.9°F (2002) | 0.31 in (2025) |
| August 27 | 113.0°F (2011) | 70.0°F (2002) | 0.19 in (2008) |
| August 28 | 116.1°F (2009) | 68.0°F (2006) | 0.92 in (2008) |
| August 29 | 115.0°F (2007) | 70.0°F (2018) | 0.39 in (2025) |
| August 30 | 111.9°F (2007) | 73.0°F (2004) | 0.24 in (2020) |
| August 31 | 111.9°F (2011) | 71.1°F (2002) | 0.99 in (2013) |