September weather in Easton, PA
The average temperature in Easton in September is 65.7°F (54.5°F–76.8°F). Average precipitation: 4.72 inches.
September is a fall month in Easton, and is warmer than the annual average of 52.1°F. Daily temperatures swing about 22.3°F between overnight low and afternoon high. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
76.8°F
Avg Low
54.5°F
Precipitation
4.72 in
Daylight
12h 15m
September records in Easton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (2010) | 48.9°F (1999) | 1.20 in (1959) |
| September 2 | 96.1°F (2010) | 46.9°F (2017) | 3.75 in (2021) |
| September 3 | 97.0°F (2010) | 46.9°F (2017) | 1.34 in (1959) |
| September 4 | 91.9°F (2018) | 48.9°F (1994) | 1.96 in (1969) |
| September 5 | 93.0°F (2008) | 46.9°F (1994) | 2.00 in (2025) |
| September 6 | 93.0°F (2018) | 46.0°F (2013) | 3.25 in (2011) |
| September 7 | 93.0°F (2018) | 46.9°F (2013) | 3.20 in (2011) |
| September 8 | 91.0°F (2010) | 39.9°F (2000) | 1.29 in (2023) |
| September 9 | 96.1°F (2015) | 41.0°F (2017) | 3.30 in (2004) |
| September 10 | 93.9°F (2015) | 46.9°F (2024) | 1.88 in (1945) |
| September 11 | 96.1°F (2016) | 45.0°F (1995) | 1.34 in (1968) |
| September 12 | 93.0°F (2013) | 45.0°F (1995) | 1.87 in (1997) |
| September 13 | 91.9°F (2005) | 48.0°F (1995) | 4.10 in (1960) |
| September 14 | 91.9°F (2005) | 45.0°F (2002) | 1.52 in (1944) |
| September 15 | 91.0°F (2008) | 41.0°F (1997) | 2.15 in (2006) |
| September 16 | 89.1°F (2005) | 45.0°F (2007) | 2.00 in (1999) |
| September 17 | 90.0°F (2005) | 43.0°F (2007) | 5.20 in (1999) |
| September 18 | 84.9°F (2015) | 42.1°F (2013) | 4.10 in (2004) |
| September 19 | 84.9°F (2015) | 41.0°F (2013) | 1.71 in (2012) |
| September 20 | 84.9°F (2005) | 39.9°F (2020) | 0.61 in (1955) |
| September 21 | 84.0°F (2000) | 37.9°F (2020) | 1.46 in (2001) |
| September 22 | 86.0°F (2002) | 37.9°F (2020) | 1.95 in (1946) |
| September 23 | 89.1°F (2010) | 37.9°F (2020) | 1.16 in (2003) |
| September 24 | 91.0°F (2019) | 39.9°F (2022) | 1.10 in (2011) |
| September 25 | 89.1°F (2010) | 39.0°F (1997) | 1.25 in (1946) |
| September 26 | 89.1°F (2007) | 41.0°F (1997) | 1.82 in (2018) |
| September 27 | 90.0°F (2007) | 41.0°F (2000) | 1.95 in (1994) |
| September 28 | 89.1°F (1998) | 42.1°F (2000) | 2.18 in (1942) |
| September 29 | 86.0°F (2025) | 45.0°F (1995) | 3.10 in (2004) |
| September 30 | 81.0°F (2015) | 37.0°F (2000) | 2.03 in (2015) |