September weather in South Dayton, NY
The average temperature in South Dayton in September is 61.0°F (50.7°F–71.3°F). Average precipitation: 4.95 inches.
September is a fall month in South Dayton, and is warmer than the annual average of 46.9°F. Daily temperatures swing about 20.6°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
71.3°F
Avg Low
50.7°F
Precipitation
4.95 in
Daylight
12h 16m
September records in South Dayton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 88.0°F (2012) | 41.0°F (2017) | 1.32 in (2005) |
| September 2 | 89.1°F (2011) | 43.0°F (2017) | 1.55 in (2019) |
| September 3 | 90.0°F (2011) | 43.0°F (2024) | 2.03 in (2006) |
| September 4 | 87.1°F (2018) | 46.0°F (2016) | 0.76 in (2010) |
| September 5 | 87.1°F (2018) | 48.0°F (2024) | 2.56 in (2022) |
| September 6 | 90.0°F (2018) | 39.0°F (2013) | 0.42 in (2020) |
| September 7 | 88.0°F (2023) | 39.0°F (2013) | 1.23 in (2024) |
| September 8 | 87.1°F (2016) | 43.0°F (2025) | 1.06 in (2017) |
| September 9 | 88.0°F (2015) | 43.0°F (2025) | 4.53 in (2004) |
| September 10 | 84.9°F (2020) | 43.0°F (2017) | 2.23 in (2007) |
| September 11 | 88.0°F (2013) | 44.1°F (2017) | 0.69 in (2016) |
| September 12 | 88.0°F (2013) | 46.0°F (2020) | 0.68 in (2019) |
| September 13 | 82.9°F (2011) | 46.0°F (2014) | 1.52 in (2015) |
| September 14 | 82.0°F (2012) | 45.0°F (2013) | 0.80 in (2008) |
| September 15 | 82.0°F (2018) | 39.9°F (2020) | 0.47 in (2011) |
| September 16 | 84.9°F (2018) | 39.9°F (2020) | 0.92 in (2005) |
| September 17 | 84.0°F (2018) | 35.1°F (2013) | 4.25 in (2005) |
| September 18 | 81.0°F (2021) | 35.1°F (2013) | 1.62 in (2004) |
| September 19 | 80.1°F (2015) | 34.0°F (2020) | 0.67 in (2006) |
| September 20 | 79.0°F (2017) | 33.1°F (2020) | 0.59 in (2006) |
| September 21 | 81.0°F (2024) | 33.1°F (2020) | 0.91 in (2012) |
| September 22 | 86.0°F (2018) | 41.0°F (2020) | 1.67 in (2013) |
| September 23 | 84.0°F (2019) | 41.0°F (2012) | 0.83 in (2021) |
| September 24 | 82.0°F (2017) | 39.9°F (2013) | 0.72 in (2011) |
| September 25 | 84.9°F (2017) | 39.9°F (2013) | 0.38 in (2018) |
| September 26 | 87.1°F (2017) | 41.0°F (2012) | 0.91 in (2022) |
| September 27 | 84.9°F (2017) | 41.0°F (2012) | 1.41 in (2022) |
| September 28 | 84.0°F (2017) | 46.0°F (2012) | 0.71 in (2022) |
| September 29 | 78.1°F (2020) | 43.0°F (2017) | 1.36 in (2009) |
| September 30 | 77.0°F (2025) | 34.0°F (2022) | 1.78 in (2015) |