September weather in Cortland, OH
The average temperature in Cortland in September is 63.0°F (51.4°F–74.6°F). Average precipitation: 4.27 inches.
September is a fall month in Cortland, and is warmer than the annual average of 49.2°F. Daily temperatures swing about 23.2°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
74.6°F
Avg Low
51.4°F
Precipitation
4.27 in
Daylight
12h 16m
September records in Cortland
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (1953) | 43.0°F (2019) | 1.80 in (2016) |
| September 2 | 97.0°F (1953) | 43.0°F (1955) | 2.47 in (2019) |
| September 3 | 98.1°F (1953) | 45.0°F (2024) | 1.80 in (1993) |
| September 4 | 96.1°F (1953) | 42.1°F (1951) | 2.25 in (1988) |
| September 5 | 93.9°F (1953) | 39.9°F (1951) | 1.35 in (1958) |
| September 6 | 93.0°F (2018) | 42.1°F (1955) | 1.30 in (1968) |
| September 7 | 88.0°F (2015) | 44.1°F (1950) | 2.10 in (1990) |
| September 8 | 90.0°F (2015) | 32.0°F (1951) | 2.31 in (2020) |
| September 9 | 90.0°F (2015) | 36.0°F (1951) | 4.50 in (2004) |
| September 10 | 87.1°F (2020) | 41.0°F (2017) | 3.01 in (2018) |
| September 11 | 91.9°F (1952) | 41.0°F (2017) | 1.99 in (2011) |
| September 12 | 90.0°F (2013) | 41.0°F (2017) | 1.14 in (1945) |
| September 13 | 97.0°F (1952) | 37.0°F (1955) | 1.32 in (1950) |
| September 14 | 95.0°F (1952) | 33.1°F (1953) | 3.98 in (1979) |
| September 15 | 88.0°F (1952) | 37.9°F (1953) | 1.27 in (1989) |
| September 16 | 88.0°F (1955) | 42.1°F (2014) | 0.70 in (2003) |
| September 17 | 91.9°F (1955) | 36.0°F (1953) | 0.96 in (1983) |
| September 18 | 98.1°F (1955) | 37.9°F (1953) | 1.94 in (1976) |
| September 19 | 91.9°F (1955) | 37.0°F (2020) | 2.09 in (2006) |
| September 20 | 96.1°F (1955) | 37.0°F (2020) | 1.10 in (1997) |
| September 21 | 84.9°F (2016) | 39.9°F (1955) | 0.81 in (2000) |
| September 22 | 88.0°F (2018) | 37.0°F (2020) | 2.16 in (1992) |
| September 23 | 87.1°F (2019) | 30.9°F (1953) | 1.42 in (2025) |
| September 24 | 88.0°F (2017) | 6.1°F (2016) | 1.16 in (2000) |
| September 25 | 90.0°F (2017) | 35.1°F (1952) | 1.11 in (2024) |
| September 26 | 90.0°F (2017) | 37.9°F (1950) | 1.70 in (1994) |
| September 27 | 89.1°F (2017) | 32.0°F (1952) | 1.68 in (2011) |
| September 28 | 89.1°F (2017) | 32.0°F (1952) | 1.52 in (1967) |
| September 29 | 84.0°F (2025) | 32.0°F (1951) | 1.15 in (1973) |
| September 30 | 90.0°F (1953) | 35.1°F (1951) | 2.10 in (1999) |