September weather in Wilmington, NC
The average temperature in Wilmington in September is 75.3°F (66.7°F–83.9°F). Average precipitation: 8.69 inches.
September is a fall month in Wilmington, and is warmer than the annual average of 64.4°F. Daily temperatures swing about 17.2°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 12h 12m. For travel, September is a wet month.
Avg High
83.9°F
Avg Low
66.7°F
Precipitation
8.69 in
Daylight
12h 12m
September records in Wilmington
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (1993) | 61.0°F (2011) | 1.80 in (1949) |
| September 2 | 95.0°F (2020) | 57.0°F (1967) | 7.78 in (2016) |
| September 3 | 97.0°F (2010) | 59.0°F (1954) | 2.65 in (1998) |
| September 4 | 98.1°F (1975) | 53.1°F (1997) | 3.44 in (1979) |
| September 5 | 95.0°F (1983) | 48.9°F (1997) | 8.58 in (2019) |
| September 6 | 96.1°F (1983) | 53.1°F (1997) | 2.00 in (1979) |
| September 7 | 96.1°F (1983) | 57.0°F (1984) | 4.96 in (1995) |
| September 8 | 93.9°F (1978) | 55.9°F (1984) | 1.20 in (1998) |
| September 9 | 97.0°F (1978) | 53.1°F (1956) | 3.66 in (1973) |
| September 10 | 93.9°F (1983) | 48.0°F (1956) | 2.59 in (1955) |
| September 11 | 95.0°F (1983) | 51.1°F (1956) | 6.92 in (1984) |
| September 12 | 93.0°F (1983) | 53.1°F (1956) | 2.55 in (2014) |
| September 13 | 91.9°F (1983) | 53.1°F (1985) | 4.63 in (1984) |
| September 14 | 93.9°F (1991) | 48.9°F (1985) | 9.58 in (2018) |
| September 15 | 95.0°F (1956) | 52.0°F (1985) | 13.38 in (1999) |
| September 16 | 95.0°F (1956) | 53.1°F (2023) | 4.50 in (2018) |
| September 17 | 93.9°F (1958) | 53.1°F (1961) | 4.16 in (2020) |
| September 18 | 93.0°F (1958) | 51.1°F (1990) | 4.48 in (1994) |
| September 19 | 95.0°F (1970) | 52.0°F (1981) | 6.57 in (1955) |
| September 20 | 91.9°F (2022) | 51.1°F (1981) | 1.73 in (1953) |
| September 21 | 91.0°F (2017) | 46.0°F (1962) | 3.79 in (2021) |
| September 22 | 93.9°F (2022) | 51.1°F (1999) | 4.31 in (2021) |
| September 23 | 93.9°F (1980) | 46.0°F (1999) | 2.81 in (1957) |
| September 24 | 91.9°F (1961) | 44.1°F (1981) | 0.69 in (1991) |
| September 25 | 93.0°F (1986) | 45.0°F (1981) | 4.16 in (2008) |
| September 26 | 93.0°F (1986) | 46.0°F (1950) | 1.46 in (1985) |
| September 27 | 95.0°F (1986) | 51.1°F (2001) | 10.33 in (2010) |
| September 28 | 93.9°F (2017) | 51.1°F (1962) | 2.67 in (1997) |
| September 29 | 96.1°F (2019) | 50.0°F (1970) | 7.37 in (2010) |
| September 30 | 91.0°F (1986) | 46.9°F (1970) | 2.75 in (2022) |