September weather in New London, IA
The average temperature in New London in September is 64.5°F (51.9°F–77.1°F). Average precipitation: 4.13 inches.
September is a fall month in New London, and is warmer than the annual average of 49.7°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 15m. For travel, September is a comfortable month to visit.
Avg High
77.1°F
Avg Low
51.9°F
Precipitation
4.13 in
Daylight
12h 15m
September records in New London
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (1953) | 41.0°F (1949) | 2.30 in (2010) |
| September 2 | 100.9°F (2000) | 41.0°F (1946) | 1.43 in (1918) |
| September 3 | 99.0°F (1939) | 39.9°F (1901) | 4.43 in (1921) |
| September 4 | 100.9°F (1925) | 39.0°F (1974) | 2.00 in (1898) |
| September 5 | 100.0°F (1899) | 41.0°F (1902) | 2.00 in (1914) |
| September 6 | 100.9°F (1899) | 37.9°F (1988) | 2.04 in (1916) |
| September 7 | 100.0°F (1939) | 37.9°F (1956) | 2.15 in (1917) |
| September 8 | 98.1°F (1922) | 37.9°F (1986) | 2.60 in (1926) |
| September 9 | 98.1°F (1947) | 39.9°F (1943) | 2.70 in (1903) |
| September 10 | 100.0°F (2013) | 37.0°F (1910) | 3.70 in (2014) |
| September 11 | 98.1°F (1936) | 36.0°F (1917) | 2.98 in (1925) |
| September 12 | 98.1°F (1927) | 35.1°F (1955) | 2.97 in (1928) |
| September 13 | 98.1°F (1927) | 35.1°F (1953) | 5.53 in (1961) |
| September 14 | 99.0°F (1939) | 35.1°F (1923) | 2.30 in (1993) |
| September 15 | 100.9°F (1939) | 35.1°F (2007) | 2.35 in (1926) |
| September 16 | 95.0°F (1939) | 35.1°F (1916) | 1.80 in (1936) |
| September 17 | 99.0°F (1927) | 33.1°F (1903) | 1.27 in (1973) |
| September 18 | 96.1°F (1953) | 32.0°F (1901) | 1.88 in (1978) |
| September 19 | 96.1°F (1948) | 33.1°F (1902) | 5.39 in (1983) |
| September 20 | 93.0°F (1940) | 28.9°F (1991) | 2.69 in (1965) |
| September 21 | 95.0°F (2022) | 33.1°F (1918) | 4.56 in (1947) |
| September 22 | 95.0°F (1937) | 30.9°F (1913) | 2.88 in (1894) |
| September 23 | 91.0°F (1937) | 32.0°F (1983) | 3.04 in (1959) |
| September 24 | 93.0°F (2017) | 28.0°F (1942) | 2.94 in (1911) |
| September 25 | 89.1°F (1920) | 30.9°F (2012) | 4.40 in (1984) |
| September 26 | 91.9°F (1953) | 30.0°F (1926) | 3.39 in (1933) |
| September 27 | 91.0°F (1990) | 30.9°F (1942) | 4.06 in (1973) |
| September 28 | 100.0°F (1953) | 23.0°F (1942) | 3.40 in (1999) |
| September 29 | 98.1°F (1953) | 25.0°F (1899) | 2.12 in (1906) |
| September 30 | 91.0°F (1952) | 32.0°F (1924) | 1.32 in (1919) |