September weather in Wallingford, IA
The average temperature in Wallingford in September is 60.6°F (48.5°F–72.8°F). Average precipitation: 3.14 inches.
September is a fall month in Wallingford, and is warmer than the annual average of 44.6°F. Daily temperatures swing about 24.3°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
72.8°F
Avg Low
48.5°F
Precipitation
3.14 in
Daylight
12h 17m
September records in Wallingford
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.0°F (2011) | 39.9°F (2009) | 0.23 in (2015) |
| September 2 | 93.0°F (2023) | 44.1°F (2009) | 1.10 in (2021) |
| September 3 | 91.0°F (2023) | 43.0°F (2008) | 0.99 in (2018) |
| September 4 | 93.0°F (2012) | 39.0°F (2025) | 1.85 in (2018) |
| September 5 | 88.0°F (1998) | 42.1°F (2011) | 1.26 in (2016) |
| September 6 | 91.0°F (1998) | 39.0°F (2025) | 0.50 in (2005) |
| September 7 | 91.0°F (2002) | 37.0°F (2025) | 0.52 in (2005) |
| September 8 | 91.0°F (2002) | 37.9°F (2008) | 1.51 in (2005) |
| September 9 | 96.1°F (2013) | 36.0°F (2008) | 1.16 in (2016) |
| September 10 | 88.0°F (2005) | 42.1°F (2020) | 1.21 in (2010) |
| September 11 | 93.9°F (2012) | 37.9°F (2007) | 2.21 in (2003) |
| September 12 | 91.9°F (1998) | 34.0°F (2007) | 0.66 in (2019) |
| September 13 | 95.0°F (2025) | 31.1°F (2014) | 0.33 in (2002) |
| September 14 | 90.0°F (2025) | 32.0°F (2007) | 5.31 in (2004) |
| September 15 | 90.0°F (2025) | 28.2°F (2007) | 4.17 in (2004) |
| September 16 | 91.9°F (2025) | 36.0°F (2014) | 1.21 in (2006) |
| September 17 | 91.0°F (2007) | 39.9°F (2012) | 0.24 in (2004) |
| September 18 | 89.1°F (2013) | 35.1°F (2012) | 2.27 in (2017) |
| September 19 | 91.9°F (1998) | 34.0°F (2006) | 2.45 in (2018) |
| September 20 | 96.1°F (2022) | 31.1°F (2006) | 2.10 in (2018) |
| September 21 | 91.9°F (2005) | 30.0°F (1999) | 1.03 in (2004) |
| September 22 | 91.0°F (2017) | 30.2°F (2012) | 0.87 in (2010) |
| September 23 | 87.1°F (2017) | 27.1°F (2012) | 1.67 in (2010) |
| September 24 | 88.0°F (2017) | 30.9°F (2001) | 1.31 in (2005) |
| September 25 | 88.0°F (2020) | 30.0°F (2001) | 2.85 in (2005) |
| September 26 | 88.0°F (1998) | 31.1°F (2012) | 0.20 in (2002) |
| September 27 | 88.0°F (2013) | 29.1°F (2012) | 0.04 in (2013) |
| September 28 | 86.0°F (2024) | 29.1°F (2022) | 0.43 in (2008) |
| September 29 | 90.0°F (2023) | 28.0°F (2003) | 0.90 in (2007) |
| September 30 | 91.9°F (2023) | 27.0°F (2003) | 2.14 in (2021) |