September weather in Oneonta, NY
The average temperature in Oneonta in September is 58.7°F (47.0°F–70.4°F). Average precipitation: 3.78 inches.
September is a fall month in Oneonta, and is warmer than the annual average of 44.6°F. Daily temperatures swing about 23.4°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
70.4°F
Avg Low
47.0°F
Precipitation
3.78 in
Daylight
12h 16m
September records in Oneonta
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 89.1°F (1993) | 37.9°F (2017) | 0.76 in (2005) |
| September 2 | 87.1°F (1999) | 35.1°F (1992) | 1.57 in (2003) |
| September 3 | 89.1°F (1999) | 36.0°F (2017) | 0.96 in (2013) |
| September 4 | 89.1°F (1999) | 37.9°F (1997) | 1.55 in (2002) |
| September 5 | 89.1°F (1999) | 37.9°F (2000) | 0.95 in (2011) |
| September 6 | 88.0°F (2008) | 37.0°F (1984) | 0.97 in (2011) |
| September 7 | 88.0°F (1998) | 33.1°F (1984) | 0.60 in (2008) |
| September 8 | 90.0°F (2007) | 34.0°F (1984) | 4.73 in (2011) |
| September 9 | 89.1°F (2015) | 35.1°F (1986) | 1.54 in (1987) |
| September 10 | 89.1°F (2002) | 36.0°F (1986) | 0.92 in (1995) |
| September 11 | 89.1°F (2002) | 34.0°F (1995) | 2.10 in (2018) |
| September 12 | 89.1°F (2013) | 34.0°F (1995) | 0.68 in (1984) |
| September 13 | 84.0°F (2005) | 34.0°F (1985) | 1.49 in (2000) |
| September 14 | 84.0°F (2005) | 35.1°F (1985) | 0.94 in (1987) |
| September 15 | 86.0°F (2005) | 35.1°F (1985) | 0.87 in (2006) |
| September 16 | 82.9°F (1993) | 34.0°F (1984) | 1.24 in (2021) |
| September 17 | 88.0°F (1991) | 33.1°F (1986) | 3.97 in (1999) |
| September 18 | 81.0°F (1991) | 30.9°F (1990) | 3.18 in (2004) |
| September 19 | 82.0°F (2017) | 28.9°F (2020) | 1.37 in (2016) |
| September 20 | 82.0°F (1985) | 28.0°F (1993) | 0.66 in (1991) |
| September 21 | 84.9°F (1985) | 28.0°F (1993) | 0.76 in (1999) |
| September 22 | 80.1°F (2007) | 28.9°F (2020) | 0.52 in (1999) |
| September 23 | 82.0°F (2007) | 30.0°F (2020) | 2.51 in (2002) |
| September 24 | 82.9°F (2017) | 28.9°F (1998) | 1.36 in (2011) |
| September 25 | 86.0°F (2010) | 28.9°F (1998) | 1.16 in (2001) |
| September 26 | 88.0°F (2017) | 30.9°F (1989) | 1.01 in (2018) |
| September 27 | 87.1°F (2017) | 32.0°F (1984) | 1.51 in (1985) |
| September 28 | 87.1°F (2017) | 27.0°F (1989) | 1.63 in (1985) |
| September 29 | 79.0°F (2019) | 27.0°F (1989) | 1.39 in (2006) |
| September 30 | 77.0°F (1987) | 27.0°F (2000) | 2.04 in (2015) |