September weather in Bordentown, NJ
The average temperature in Bordentown in September is 67.4°F (57.7°F–77.1°F). Average precipitation: 4.05 inches.
September is a fall month in Bordentown, and is warmer than the annual average of 54.1°F. Daily temperatures swing about 19.4°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
77.1°F
Avg Low
57.7°F
Precipitation
4.05 in
Daylight
12h 15m
September records in Bordentown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 97.0°F (2010) | 52.0°F (2017) | 5.60 in (2021) |
| September 2 | 97.0°F (2010) | 50.0°F (2001) | 2.05 in (2006) |
| September 3 | 93.9°F (2015) | 51.1°F (2024) | 1.21 in (2020) |
| September 4 | 93.9°F (2008) | 48.9°F (2024) | 0.69 in (2012) |
| September 5 | 93.0°F (2018) | 51.1°F (2000) | 0.59 in (2006) |
| September 6 | 95.0°F (2018) | 48.9°F (2000) | 2.88 in (2011) |
| September 7 | 93.0°F (1998) | 45.0°F (2000) | 0.71 in (1998) |
| September 8 | 95.0°F (2016) | 48.9°F (2000) | 1.45 in (2011) |
| September 9 | 95.0°F (2016) | 45.0°F (2024) | 1.06 in (1999) |
| September 10 | 97.0°F (2016) | 51.1°F (2017) | 2.26 in (2023) |
| September 11 | 93.0°F (2013) | 48.9°F (2012) | 1.90 in (1945) |
| September 12 | 91.0°F (2005) | 48.9°F (2006) | 1.02 in (2008) |
| September 13 | 91.9°F (2005) | 48.9°F (2002) | 1.15 in (2003) |
| September 14 | 93.0°F (2016) | 48.0°F (2001) | 0.86 in (2001) |
| September 15 | 87.1°F (2005) | 45.0°F (2001) | 1.76 in (2005) |
| September 16 | 89.1°F (1998) | 44.1°F (2001) | 7.25 in (1999) |
| September 17 | 86.0°F (2015) | 45.0°F (2007) | 0.63 in (1945) |
| September 18 | 86.0°F (2016) | 41.0°F (2013) | 1.65 in (1945) |
| September 19 | 86.0°F (2005) | 42.1°F (2020) | 2.14 in (2000) |
| September 20 | 84.0°F (2005) | 42.1°F (2020) | 0.18 in (2001) |
| September 21 | 87.1°F (1998) | 41.0°F (2020) | 0.83 in (2013) |
| September 22 | 90.0°F (2010) | 39.9°F (2020) | 0.49 in (2010) |
| September 23 | 89.1°F (2019) | 43.0°F (2014) | 1.60 in (2021) |
| September 24 | 91.9°F (2017) | 39.9°F (1998) | 0.87 in (2023) |
| September 25 | 90.0°F (2017) | 43.0°F (2012) | 1.96 in (2018) |
| September 26 | 91.0°F (2007) | 43.0°F (2001) | 0.84 in (2002) |
| September 27 | 91.9°F (1998) | 41.0°F (2000) | 1.04 in (2009) |
| September 28 | 84.9°F (2025) | 45.0°F (2001) | 5.73 in (2004) |
| September 29 | 86.0°F (1945) | 39.0°F (2000) | 1.04 in (2020) |
| September 30 | 81.0°F (2025) | 36.0°F (2000) | 1.57 in (2020) |