September weather in Potsdam, NY
The average temperature in Potsdam in September is 59.5°F (48.2°F–70.7°F). Average precipitation: 4.07 inches.
September is a fall month in Potsdam, and is warmer than the annual average of 44°F. Daily temperatures swing about 22.5°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
70.7°F
Avg Low
48.2°F
Precipitation
4.07 in
Daylight
12h 18m
September records in Potsdam
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 82.0°F (2012) | 36.0°F (2017) | 1.15 in (1954) |
| September 2 | 84.0°F (2012) | 37.0°F (2017) | 0.86 in (1965) |
| September 3 | 84.9°F (2012) | 37.0°F (2017) | 2.40 in (1947) |
| September 4 | 88.0°F (2018) | 43.0°F (2016) | 1.17 in (1963) |
| September 5 | 84.9°F (2012) | 44.1°F (2019) | 3.65 in (2012) |
| September 6 | 90.0°F (2018) | 43.0°F (2013) | 1.86 in (1985) |
| September 7 | 87.1°F (2015) | 39.0°F (2013) | 1.25 in (1979) |
| September 8 | 88.0°F (2015) | 43.0°F (2018) | 0.86 in (2004) |
| September 9 | 86.0°F (2012) | 37.0°F (2018) | 1.82 in (2004) |
| September 10 | 86.0°F (2012) | 39.0°F (2019) | 0.73 in (1974) |
| September 11 | 84.9°F (2016) | 41.0°F (2012) | 1.54 in (1981) |
| September 12 | 87.1°F (2013) | 39.9°F (2025) | 2.05 in (2013) |
| September 13 | 81.0°F (2012) | 37.0°F (2014) | 1.33 in (1963) |
| September 14 | 82.0°F (2012) | 39.0°F (2019) | 1.97 in (1977) |
| September 15 | 82.0°F (2018) | 36.0°F (2020) | 2.81 in (1979) |
| September 16 | 84.9°F (2018) | 37.0°F (2012) | 1.24 in (1942) |
| September 17 | 84.0°F (2018) | 33.1°F (2013) | 2.64 in (1999) |
| September 18 | 84.0°F (2018) | 32.0°F (2020) | 1.02 in (1973) |
| September 19 | 82.9°F (2015) | 28.9°F (2014) | 3.14 in (1945) |
| September 20 | 86.0°F (2015) | 28.9°F (2014) | 2.12 in (2022) |
| September 21 | 80.1°F (2013) | 33.1°F (2025) | 0.61 in (1974) |
| September 22 | 79.0°F (2016) | 36.0°F (2020) | 2.15 in (1938) |
| September 23 | 84.0°F (2016) | 35.1°F (2013) | 1.02 in (1967) |
| September 24 | 82.9°F (2017) | 33.1°F (2013) | 1.33 in (2000) |
| September 25 | 84.9°F (2017) | 32.0°F (2016) | 3.45 in (2001) |
| September 26 | 88.0°F (2017) | 32.0°F (2016) | 1.89 in (1975) |
| September 27 | 84.0°F (2017) | 36.0°F (2015) | 1.32 in (1998) |
| September 28 | 86.0°F (2017) | 32.0°F (2013) | 3.04 in (1985) |
| September 29 | 81.0°F (2020) | 37.0°F (2017) | 1.07 in (1997) |
| September 30 | 75.9°F (2025) | 37.0°F (2022) | 1.70 in (1946) |