September weather in Dover, NJ
The average temperature in Dover in September is 65.5°F (54.4°F–76.5°F). Average precipitation: 4.68 inches.
September is a fall month in Dover, and is warmer than the annual average of 51.8°F. Daily temperatures swing about 22.1°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
76.5°F
Avg Low
54.4°F
Precipitation
4.68 in
Daylight
12h 15m
September records in Dover
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (1953) | 39.0°F (1926) | 1.76 in (1959) |
| September 2 | 95.0°F (1953) | 39.9°F (1896) | 4.84 in (2021) |
| September 3 | 104.0°F (1953) | 41.0°F (1916) | 2.71 in (2006) |
| September 4 | 97.0°F (1953) | 43.0°F (1952) | 4.39 in (1992) |
| September 5 | 93.9°F (1973) | 43.0°F (1896) | 3.44 in (1907) |
| September 6 | 99.0°F (1899) | 41.0°F (1938) | 3.67 in (1896) |
| September 7 | 93.9°F (2018) | 39.9°F (1924) | 3.52 in (2008) |
| September 8 | 93.0°F (1916) | 39.0°F (1962) | 1.62 in (1929) |
| September 9 | 95.0°F (1915) | 39.0°F (1917) | 2.75 in (1934) |
| September 10 | 95.0°F (1897) | 37.0°F (1938) | 3.12 in (1924) |
| September 11 | 93.9°F (1895) | 30.9°F (1917) | 2.60 in (2015) |
| September 12 | 93.9°F (1895) | 30.9°F (1917) | 3.05 in (1971) |
| September 13 | 91.0°F (1961) | 36.0°F (1917) | 1.73 in (1944) |
| September 14 | 91.9°F (1952) | 37.9°F (1953) | 1.90 in (1944) |
| September 15 | 91.0°F (1931) | 33.1°F (1899) | 3.75 in (1933) |
| September 16 | 91.0°F (1927) | 35.1°F (1964) | 1.86 in (2002) |
| September 17 | 91.0°F (1915) | 32.0°F (1923) | 2.02 in (1903) |
| September 18 | 91.0°F (1991) | 30.0°F (1923) | 1.44 in (1958) |
| September 19 | 86.0°F (1946) | 35.1°F (1929) | 3.38 in (1972) |
| September 20 | 93.9°F (1895) | 33.1°F (1993) | 3.88 in (1938) |
| September 21 | 96.1°F (1895) | 34.0°F (1956) | 2.31 in (1989) |
| September 22 | 96.1°F (1895) | 35.1°F (1962) | 5.53 in (1966) |
| September 23 | 95.0°F (1895) | 33.1°F (1925) | 2.05 in (1919) |
| September 24 | 91.9°F (1970) | 32.0°F (1953) | 2.32 in (1907) |
| September 25 | 91.0°F (2017) | 28.9°F (1963) | 3.77 in (1991) |
| September 26 | 91.9°F (1984) | 28.9°F (1925) | 2.43 in (2018) |
| September 27 | 89.1°F (1970) | 28.9°F (1947) | 2.45 in (1985) |
| September 28 | 89.1°F (2017) | 32.0°F (1947) | 1.53 in (1962) |
| September 29 | 86.0°F (1921) | 30.9°F (1947) | 3.80 in (2004) |
| September 30 | 84.0°F (1948) | 30.9°F (1951) | 4.63 in (1934) |