September weather in Somerton, AZ
The average temperature in Somerton in September is 89.5°F (77.6°F–101.4°F). Average precipitation: 0.68 inches.
September is a fall month in Somerton, and is warmer than the annual average of 76°F. Daily temperatures swing about 23.8°F between overnight low and afternoon high. Expect about 2 days with precipitation. Daylight averages about 12h 11m. For travel, September is hot.
Avg High
101.4°F
Avg Low
77.6°F
Precipitation
0.68 in
Daylight
12h 11m
September records in Somerton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 115.0°F (1982) | 73.0°F (1992) | 0.08 in (1995) |
| September 2 | 115.0°F (1982) | 73.0°F (1986) | 1.67 in (2023) |
| September 3 | 115.0°F (2010) | 75.0°F (1985) | 0.08 in (2017) |
| September 4 | 115.0°F (2024) | 66.9°F (1985) | 2.26 in (1998) |
| September 5 | 120.0°F (2020) | 68.0°F (2004) | 1.62 in (2009) |
| September 6 | 115.0°F (2020) | 71.1°F (1985) | 0.25 in (1985) |
| September 7 | 111.9°F (1994) | 66.9°F (1985) | 0.72 in (1987) |
| September 8 | 113.0°F (1993) | 71.1°F (2010) | 0.91 in (2015) |
| September 9 | 113.0°F (1990) | 70.0°F (1989) | 1.44 in (2014) |
| September 10 | 115.0°F (1990) | 66.0°F (1989) | 0.17 in (2012) |
| September 11 | 116.1°F (1990) | 64.9°F (1985) | 0.03 in (1982) |
| September 12 | 111.0°F (1995) | 62.1°F (1985) | 0.10 in (2011) |
| September 13 | 111.0°F (1995) | 66.0°F (1985) | 0.02 in (2011) |
| September 14 | 113.0°F (2018) | 64.9°F (1987) | 0.56 in (1997) |
| September 15 | 111.0°F (2018) | 68.0°F (2016) | 0.00 in (1982) |
| September 16 | 111.0°F (2013) | 66.0°F (1982) | 0.00 in (1982) |
| September 17 | 111.9°F (2020) | 64.9°F (1982) | 0.00 in (1982) |
| September 18 | 109.0°F (1984) | 57.9°F (1985) | 0.69 in (1985) |
| September 19 | 113.0°F (2010) | 63.0°F (1985) | 0.00 in (1982) |
| September 20 | 108.0°F (1984) | 60.1°F (1989) | 0.12 in (2016) |
| September 21 | 108.0°F (2003) | 63.0°F (1986) | 1.36 in (1994) |
| September 22 | 109.9°F (1982) | 64.0°F (1988) | 0.15 in (1986) |
| September 23 | 111.0°F (1992) | 61.0°F (1986) | 0.53 in (2019) |
| September 24 | 109.9°F (2024) | 55.0°F (1986) | 0.08 in (1997) |
| September 25 | 109.9°F (2015) | 61.0°F (2017) | 3.98 in (1997) |
| September 26 | 111.0°F (2010) | 59.0°F (1986) | 0.22 in (1983) |
| September 27 | 109.9°F (2009) | 61.0°F (1986) | 0.36 in (1985) |
| September 28 | 111.9°F (2024) | 57.0°F (1982) | 0.27 in (1985) |
| September 29 | 109.0°F (2024) | 62.1°F (1986) | 0.00 in (1982) |
| September 30 | 109.0°F (2012) | 57.9°F (2019) | 0.65 in (2018) |