Bay Shore Weather in September
Average highs run from 73°F on September 1 to 63°F on September 30, and lows from 56°F to 47°F. Normal precipitation for the month is 3.55 in over about 12 wet days.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 69°F
- Average low
- 51°F
- Precipitation
- 3.55 in
- Record high
- 95°FSep 9, 1897
- Record low
- 32°FSep 24, 1896
- Chance of a freeze
- 7%
- Daylight
- 13 h 16 min to 11 h 45 min
- Cloud cover
- 63%
- Humidity
- 78%
- Dew point
- 53°F
- Wind
- 11.4 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Sep 1 | 73°F | 56°F | 91°F 1898 | 38°F 1909 | 37% | 0% |
| Sep 2 | 73°F | 56°F | 91°F 1898 | 44°F 2017 | 37% | 0% |
| Sep 3 | 73°F | 55°F | 92°F 1898 | 38°F 1908 | 37% | 0% |
| Sep 4 | 73°F | 55°F | 87°F 2023 | 36°F 1896 | 38% | 0% |
| Sep 5 | 72°F | 55°F | 88°F 1999 | 42°F 1896 | 38% | 0% |
| Sep 6 | 72°F | 55°F | 94°F 1999 | 42°F 1909 | 38% | 0% |
| Sep 7 | 72°F | 54°F | 90°F 2015 | 40°F 1917 | 39% | 0% |
| Sep 8 | 72°F | 54°F | 92°F 1897 | 42°F 1896 | 39% | 0% |
| Sep 9 | 71°F | 54°F | 95°F 1897 | 44°F 1898 | 39% | 0% |
| Sep 10 | 71°F | 53°F | 94°F 1906 | 39°F 1923 | 40% | 0% |
| Sep 11 | 71°F | 53°F | 89°F 1900 | 42°F 1894 | 40% | 0% |
| Sep 12 | 71°F | 53°F | 88°F 1906 | 42°F 1911 | 40% | 0% |
| Sep 13 | 70°F | 52°F | 88°F 2005 | 43°F 1904 | 41% | 0% |
| Sep 14 | 70°F | 52°F | 87°F 2004 | 38°F 1911 | 41% | 0% |
| Sep 15 | 70°F | 52°F | 92°F 1897 | 39°F 1923 | 41% | 0% |
| Sep 16 | 69°F | 51°F | 87°F 2004 | 40°F 2011 | 41% | 0% |
| Sep 17 | 69°F | 51°F | 87°F 1925 | 40°F 1894 | 42% | 0% |
| Sep 18 | 68°F | 51°F | 87°F 2018 | 39°F 1903 | 42% | 0% |
| Sep 19 | 68°F | 50°F | 87°F 1895 | 37°F 2020 | 43% | |
| Sep 20 | 68°F | 50°F | 89°F 1895 | 38°F 1896 | 43% | |
| Sep 21 | 67°F | 50°F | 84°F 2017 | 41°F 1897 | 44% | |
| Sep 22 | 67°F | 49°F | 88°F 1908 | 37°F 1915 | 44% | |
| Sep 23 | 66°F | 49°F | 91°F 2017 | 34°F 1899 | 44% | |
| Sep 24 | 66°F | 49°F | 90°F 2017 | 32°F 1896 | 45% | |
| Sep 25 | 66°F | 48°F | 89°F 2007 | 36°F 1896 | 45% | |
| Sep 26 | 65°F | 48°F | 87°F 2017 | 37°F 1893 | 46% | |
| Sep 27 | 65°F | 48°F | 87°F 2017 | 35°F 1899 | 46% | |
| Sep 28 | 64°F | 47°F | 80°F 1894 | 32°F 2000 | 47% | |
| Sep 29 | 64°F | 47°F | 87°F 1894 | 33°F 1899 | 47% | |
| Sep 30 | 63°F | 47°F | 86°F 1905 | 32°F 1899 | 48% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- September 1
- sunrise 7:02 AM, sunset 8:18 PM
- September 30
- sunrise 7:37 AM, sunset 7:22 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00206507 (Petoskey), public domain. Records: NOAA GHCN-Daily, station USC00201468, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.