September weather in Allegany, NY
The average temperature in Allegany in September is 60.8°F (49.0°F–72.6°F). Average precipitation: 3.85 inches.
September is a fall month in Allegany, and is warmer than the annual average of 46.3°F. Daily temperatures swing about 23.6°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
72.6°F
Avg Low
49.0°F
Precipitation
3.85 in
Daylight
12h 16m
September records in Allegany
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 88.0°F (2012) | 41.0°F (2025) | 2.21 in (2011) |
| September 2 | 84.0°F (2012) | 41.0°F (2017) | 1.98 in (1980) |
| September 3 | 86.0°F (2015) | 41.0°F (2017) | 2.51 in (1993) |
| September 4 | 91.0°F (2011) | 42.1°F (2024) | 1.31 in (1993) |
| September 5 | 89.1°F (2015) | 45.0°F (2024) | 2.40 in (1939) |
| September 6 | 90.0°F (2018) | 39.9°F (2013) | 1.23 in (1979) |
| September 7 | 87.1°F (2015) | 39.9°F (2013) | 2.00 in (2024) |
| September 8 | 88.0°F (2015) | 39.0°F (2025) | 1.65 in (1916) |
| September 9 | 88.0°F (2015) | 39.9°F (2025) | 3.33 in (2004) |
| September 10 | 86.0°F (2020) | 41.0°F (2025) | 1.56 in (2018) |
| September 11 | 90.0°F (2013) | 42.1°F (2017) | 0.87 in (2023) |
| September 12 | 89.1°F (2013) | 42.1°F (2017) | 3.17 in (1975) |
| September 13 | 81.0°F (2024) | 43.0°F (2020) | 0.83 in (1918) |
| September 14 | 82.0°F (2016) | 43.0°F (2015) | 2.61 in (1977) |
| September 15 | 81.0°F (2021) | 39.0°F (2013) | 1.71 in (1979) |
| September 16 | 82.9°F (2018) | 39.0°F (2011) | 1.90 in (2003) |
| September 17 | 82.0°F (2015) | 36.0°F (2013) | 0.98 in (1918) |
| September 18 | 82.9°F (2015) | 36.0°F (2013) | 2.46 in (2016) |
| September 19 | 81.0°F (2015) | 32.0°F (2020) | 1.35 in (1952) |
| September 20 | 80.1°F (2016) | 30.0°F (2020) | 1.79 in (1953) |
| September 21 | 82.9°F (2016) | 30.0°F (2020) | 1.74 in (1925) |
| September 22 | 86.0°F (2018) | 30.0°F (2020) | 2.15 in (1992) |
| September 23 | 84.0°F (2019) | 33.1°F (2020) | 2.00 in (2021) |
| September 24 | 84.9°F (2017) | 37.0°F (2013) | 2.85 in (1926) |
| September 25 | 88.0°F (2017) | 37.0°F (2013) | 2.16 in (1945) |
| September 26 | 87.1°F (2017) | 39.9°F (2012) | 0.89 in (1975) |
| September 27 | 89.1°F (2017) | 42.1°F (2013) | 1.52 in (2005) |
| September 28 | 86.0°F (2017) | 41.0°F (2016) | 2.16 in (1962) |
| September 29 | 80.1°F (2020) | 41.0°F (2016) | 4.98 in (1967) |
| September 30 | 75.9°F (2014) | 36.0°F (2022) | 2.22 in (2015) |