September weather in Greenport, NY
The average temperature in Greenport in September is 67.4°F (60.3°F–74.5°F). Average precipitation: inches.
September is a fall month in Greenport, and is warmer than the annual average of 53°F. Daily temperatures swing about 14.2°F between overnight low and afternoon high. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
74.5°F
Avg Low
60.3°F
Precipitation
in
Daylight
12h 15m
September records in Greenport
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 82.9°F (2022) | 55.0°F (2017) | 0.00 in (2017) |
| September 2 | 82.0°F (2022) | 55.0°F (2017) | 3.70 in (2021) |
| September 3 | 82.0°F (2024) | 55.9°F (2017) | 0.23 in (2017) |
| September 4 | 86.0°F (2018) | 55.9°F (2017) | 0.19 in (2020) |
| September 5 | 88.0°F (2018) | 61.0°F (2024) | 0.34 in (2025) |
| September 6 | 89.1°F (2023) | 62.1°F (2019) | 0.13 in (2021) |
| September 7 | 90.0°F (2023) | 57.9°F (2019) | 0.73 in (2025) |
| September 8 | 93.0°F (2023) | 55.9°F (2025) | 0.60 in (2025) |
| September 9 | 86.0°F (2023) | 57.0°F (2017) | 0.30 in (2018) |
| September 10 | 86.0°F (2023) | 57.0°F (2017) | 0.63 in (2021) |
| September 11 | 84.9°F (2023) | 55.9°F (2024) | 1.10 in (2018) |
| September 12 | 80.1°F (2017) | 59.0°F (2020) | 1.05 in (2022) |
| September 13 | 81.0°F (2023) | 57.0°F (2019) | 0.16 in (2018) |
| September 14 | 81.0°F (2021) | 57.0°F (2017) | 1.07 in (2022) |
| September 15 | 78.1°F (2017) | 53.1°F (2020) | 0.06 in (2017) |
| September 16 | 81.0°F (2021) | 53.1°F (2020) | 0.02 in (2019) |
| September 17 | 79.0°F (2018) | 57.0°F (2019) | 0.03 in (2025) |
| September 18 | 77.0°F (2017) | 57.0°F (2019) | 0.25 in (2020) |
| September 19 | 81.0°F (2022) | 45.0°F (2020) | 1.23 in (2023) |
| September 20 | 82.9°F (2022) | 45.0°F (2020) | 0.25 in (2017) |
| September 21 | 78.1°F (2017) | 50.0°F (2020) | 0.02 in (2022) |
| September 22 | 79.0°F (2019) | 50.0°F (2020) | 0.00 in (2017) |
| September 23 | 81.0°F (2019) | 50.0°F (2020) | 0.80 in (2022) |
| September 24 | 84.0°F (2017) | 50.0°F (2022) | 0.53 in (2021) |
| September 25 | 75.0°F (2019) | 52.0°F (2022) | 1.06 in (2025) |
| September 26 | 77.0°F (2020) | 59.0°F (2024) | 1.26 in (2018) |
| September 27 | 79.0°F (2025) | 52.0°F (2023) | 0.48 in (2019) |
| September 28 | 78.1°F (2025) | 54.0°F (2023) | 0.95 in (2018) |
| September 29 | 79.0°F (2025) | 54.0°F (2017) | 0.56 in (2023) |
| September 30 | 75.9°F (2019) | 53.1°F (2022) | 1.38 in (2023) |