September weather in Brightwaters, NY
The average temperature in Brightwaters in September is 67.2°F (59.6°F–74.8°F). Average precipitation: 3.66 inches.
September is a fall month in Brightwaters, and is warmer than the annual average of 53.4°F. Daily temperatures swing about 15.2°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
74.8°F
Avg Low
59.6°F
Precipitation
3.66 in
Daylight
12h 15m
September records in Brightwaters
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (2010) | 54.0°F (2017) | 1.67 in (2021) |
| September 2 | 89.1°F (2005) | 51.1°F (2017) | 2.10 in (2002) |
| September 3 | 91.9°F (2015) | 54.0°F (2001) | 1.17 in (2000) |
| September 4 | 93.0°F (2018) | 55.9°F (2024) | 1.47 in (2012) |
| September 5 | 91.0°F (2023) | 53.1°F (2000) | 1.28 in (2012) |
| September 6 | 93.9°F (2023) | 51.1°F (2000) | 2.92 in (2008) |
| September 7 | 93.0°F (2023) | 50.0°F (2000) | 0.56 in (2011) |
| September 8 | 91.9°F (2015) | 55.0°F (2000) | 2.82 in (2004) |
| September 9 | 93.9°F (2016) | 52.0°F (2013) | 0.33 in (2008) |
| September 10 | 86.0°F (2016) | 53.1°F (2003) | 2.64 in (2020) |
| September 11 | 89.1°F (2013) | 52.0°F (2012) | 1.09 in (2009) |
| September 12 | 91.9°F (2005) | 48.9°F (2006) | 0.54 in (2008) |
| September 13 | 89.1°F (2005) | 50.0°F (2006) | 0.57 in (2000) |
| September 14 | 84.9°F (2016) | 50.0°F (2001) | 0.59 in (2001) |
| September 15 | 84.0°F (2008) | 48.0°F (2001) | 1.96 in (2000) |
| September 16 | 84.9°F (2015) | 48.0°F (2011) | 3.13 in (1999) |
| September 17 | 86.0°F (2015) | 46.9°F (2013) | 0.27 in (2005) |
| September 18 | 84.9°F (2021) | 46.0°F (2013) | 2.06 in (2004) |
| September 19 | 86.0°F (2022) | 46.9°F (2019) | 1.45 in (2000) |
| September 20 | 82.0°F (2000) | 48.0°F (2009) | 0.06 in (2001) |
| September 21 | 82.9°F (2016) | 46.0°F (2020) | 1.27 in (1999) |
| September 22 | 84.0°F (2005) | 46.0°F (2020) | 0.38 in (2022) |
| September 23 | 88.0°F (2005) | 48.9°F (1999) | 0.83 in (2003) |
| September 24 | 88.0°F (2017) | 46.9°F (2013) | 1.10 in (2021) |
| September 25 | 87.1°F (2010) | 45.0°F (2012) | 2.37 in (2018) |
| September 26 | 82.9°F (2025) | 48.9°F (2009) | 1.91 in (2008) |
| September 27 | 84.0°F (2017) | 45.0°F (2000) | 1.09 in (2009) |
| September 28 | 82.0°F (2025) | 46.9°F (2000) | 2.49 in (2004) |
| September 29 | 81.0°F (2015) | 41.0°F (2000) | 3.21 in (2023) |
| September 30 | 80.1°F (2025) | 42.1°F (2000) | 1.05 in (2010) |