September weather in Apache Junction, AZ
The average temperature in Apache Junction in September is 85.2°F (71.2°F–99.2°F). Average precipitation: 1.07 inches.
September is a fall month in Apache Junction, and is warmer than the annual average of 71.9°F. Daily temperatures swing about 28°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 12m. For travel, September is hot.
Avg High
99.2°F
Avg Low
71.2°F
Precipitation
1.07 in
Daylight
12h 12m
September records in Apache Junction
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 111.0°F (1995) | 64.9°F (1992) | 0.59 in (2021) |
| September 2 | 108.0°F (1995) | 64.0°F (1992) | 0.40 in (2025) |
| September 3 | 109.9°F (1995) | 63.0°F (1999) | 0.39 in (2006) |
| September 4 | 113.0°F (2020) | 63.0°F (1991) | 0.75 in (1991) |
| September 5 | 111.0°F (2020) | 62.1°F (1992) | 0.71 in (1991) |
| September 6 | 111.0°F (2020) | 63.0°F (1992) | 0.21 in (1991) |
| September 7 | 111.0°F (2020) | 64.9°F (1987) | 0.84 in (2012) |
| September 8 | 107.1°F (1994) | 64.0°F (2001) | 2.80 in (2014) |
| September 9 | 114.1°F (2023) | 59.0°F (2020) | 1.93 in (2013) |
| September 10 | 111.0°F (2023) | 59.0°F (2010) | 0.47 in (2003) |
| September 11 | 109.9°F (1990) | 64.0°F (2003) | 0.43 in (1996) |
| September 12 | 106.0°F (2001) | 62.1°F (1991) | 0.80 in (2022) |
| September 13 | 109.0°F (1995) | 61.0°F (1991) | 1.80 in (2023) |
| September 14 | 109.9°F (2000) | 55.9°F (1987) | 0.38 in (1996) |
| September 15 | 109.0°F (2000) | 55.0°F (1996) | 0.96 in (1990) |
| September 16 | 106.0°F (1998) | 55.0°F (1996) | 0.84 in (1999) |
| September 17 | 106.0°F (2020) | 57.9°F (1993) | 0.93 in (2014) |
| September 18 | 105.1°F (2020) | 55.0°F (1993) | 0.24 in (1990) |
| September 19 | 106.0°F (2010) | 60.1°F (1993) | 0.51 in (2004) |
| September 20 | 107.1°F (2010) | 57.0°F (1989) | 0.26 in (2018) |
| September 21 | 105.1°F (2003) | 53.1°F (2004) | 0.35 in (2022) |
| September 22 | 106.0°F (1989) | 52.0°F (2006) | 0.92 in (2010) |
| September 23 | 107.1°F (2001) | 53.1°F (2017) | 4.07 in (2019) |
| September 24 | 106.0°F (2011) | 52.0°F (2017) | 0.13 in (1996) |
| September 25 | 106.0°F (2024) | 52.0°F (2017) | 0.08 in (2003) |
| September 26 | 107.1°F (2024) | 51.1°F (2017) | 0.90 in (2025) |
| September 27 | 109.0°F (2024) | 61.0°F (1996) | 0.37 in (2014) |
| September 28 | 109.9°F (2024) | 59.0°F (1990) | 1.59 in (2014) |
| September 29 | 109.9°F (2024) | 57.0°F (1990) | 0.05 in (2004) |
| September 30 | 107.1°F (2024) | 55.0°F (1998) | 0.00 in (1987) |