September weather in Mesa, AZ
The average temperature in Mesa in September is 85.8°F (71.4°F–100.2°F). Average precipitation: 1.13 inches.
September is a fall month in Mesa, and is warmer than the annual average of 72.3°F. Daily temperatures swing about 28.8°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 12h 12m. For travel, September is hot.
Avg High
100.2°F
Avg Low
71.4°F
Precipitation
1.13 in
Daylight
12h 12m
September records in Mesa
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 113.0°F (2002) | 71.1°F (2021) | 0.62 in (2021) |
| September 2 | 111.0°F (2007) | 72.0°F (2006) | 0.52 in (2021) |
| September 3 | 115.0°F (2010) | 70.0°F (2006) | 0.67 in (2009) |
| September 4 | 114.1°F (2020) | 70.0°F (2015) | 0.53 in (2006) |
| September 5 | 115.0°F (2020) | 69.1°F (2009) | 0.39 in (2009) |
| September 6 | 111.9°F (2020) | 63.0°F (2004) | 0.01 in (2003) |
| September 7 | 109.0°F (2005) | 68.0°F (2004) | 1.30 in (2012) |
| September 8 | 109.0°F (2011) | 66.9°F (2006) | 4.26 in (2014) |
| September 9 | 111.9°F (2023) | 64.0°F (2010) | 1.69 in (2013) |
| September 10 | 109.9°F (2004) | 64.0°F (2010) | 0.27 in (2022) |
| September 11 | 109.9°F (2007) | 59.0°F (2010) | 0.39 in (2011) |
| September 12 | 108.0°F (2017) | 63.0°F (2020) | 0.72 in (2022) |
| September 13 | 107.1°F (2007) | 63.0°F (2010) | 0.10 in (2023) |
| September 14 | 107.1°F (2007) | 63.0°F (2005) | 0.19 in (2017) |
| September 15 | 109.0°F (2018) | 60.1°F (2005) | 0.01 in (2019) |
| September 16 | 108.0°F (2013) | 61.0°F (2012) | 0.19 in (2007) |
| September 17 | 108.0°F (2020) | 61.0°F (2005) | 0.34 in (2014) |
| September 18 | 111.0°F (2010) | 60.1°F (2006) | 0.19 in (2004) |
| September 19 | 111.9°F (2010) | 59.0°F (2006) | 0.66 in (2004) |
| September 20 | 109.0°F (2010) | 63.0°F (2002) | 0.01 in (2022) |
| September 21 | 106.0°F (2003) | 54.0°F (2004) | 0.16 in (2022) |
| September 22 | 106.0°F (2003) | 54.0°F (2004) | 1.42 in (2010) |
| September 23 | 107.1°F (2002) | 55.0°F (2004) | 2.14 in (2019) |
| September 24 | 109.0°F (2008) | 53.1°F (2016) | 0.23 in (2003) |
| September 25 | 111.9°F (2024) | 50.0°F (2017) | 0.00 in (2002) |
| September 26 | 109.0°F (2024) | 54.0°F (2017) | 0.85 in (2025) |
| September 27 | 111.0°F (2024) | 59.0°F (2007) | 1.42 in (2014) |
| September 28 | 115.0°F (2024) | 54.0°F (2013) | 0.69 in (2014) |
| September 29 | 111.9°F (2024) | 57.9°F (2013) | 0.03 in (2016) |
| September 30 | 108.0°F (2024) | 57.0°F (2002) | 0.00 in (2002) |