September weather in Dupont, IN
The average temperature in Dupont in September is 67.4°F (55.8°F–79.1°F). Average precipitation: 3.34 inches.
September is a fall month in Dupont, and is warmer than the annual average of 54.8°F. Daily temperatures swing about 23.3°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 14m. For travel, September is one of the best months of the year to visit.
Avg High
79.1°F
Avg Low
55.8°F
Precipitation
3.34 in
Daylight
12h 14m
September records in Dupont
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1943) | 43.0°F (1987) | 1.56 in (2003) |
| September 2 | 100.0°F (1953) | 45.0°F (1965) | 3.07 in (1952) |
| September 3 | 100.0°F (2011) | 46.9°F (1946) | 1.70 in (1971) |
| September 4 | 98.1°F (1954) | 44.1°F (1997) | 1.88 in (1991) |
| September 5 | 100.9°F (1954) | 43.0°F (2010) | 0.79 in (2021) |
| September 6 | 98.1°F (1954) | 43.0°F (1988) | 1.19 in (2009) |
| September 7 | 98.1°F (1939) | 39.9°F (1988) | 0.95 in (1941) |
| September 8 | 104.0°F (1939) | 42.1°F (1986) | 3.24 in (2018) |
| September 9 | 100.9°F (1939) | 41.0°F (2024) | 1.92 in (2018) |
| September 10 | 96.1°F (1964) | 37.0°F (1943) | 1.17 in (1974) |
| September 11 | 95.0°F (1964) | 43.0°F (1976) | 1.28 in (2014) |
| September 12 | 98.1°F (1939) | 37.9°F (1940) | 3.51 in (2006) |
| September 13 | 93.0°F (1991) | 37.0°F (1940) | 1.35 in (1951) |
| September 14 | 98.1°F (1939) | 34.0°F (1964) | 1.25 in (1945) |
| September 15 | 100.0°F (1939) | 42.1°F (2007) | 4.20 in (1956) |
| September 16 | 100.9°F (1939) | 37.9°F (1961) | 1.58 in (1996) |
| September 17 | 93.9°F (1955) | 37.9°F (1943) | 1.55 in (1958) |
| September 18 | 95.0°F (1955) | 37.9°F (1943) | 0.82 in (2001) |
| September 19 | 95.0°F (1940) | 36.0°F (2012) | 1.58 in (1966) |
| September 20 | 97.0°F (1940) | 37.9°F (1991) | 2.05 in (2021) |
| September 21 | 98.1°F (1940) | 36.0°F (1942) | 1.05 in (1992) |
| September 22 | 93.0°F (2010) | 34.0°F (1983) | 1.42 in (2003) |
| September 23 | 93.9°F (2010) | 33.1°F (1983) | 1.80 in (1955) |
| September 24 | 91.9°F (1959) | 32.0°F (1943) | 1.24 in (1972) |
| September 25 | 91.0°F (1959) | 30.9°F (1942) | 2.55 in (1945) |
| September 26 | 89.1°F (2017) | 32.0°F (1940) | 1.53 in (2007) |
| September 27 | 90.0°F (2019) | 33.1°F (1940) | 3.50 in (2002) |
| September 28 | 93.0°F (1939) | 26.1°F (1942) | 1.01 in (2024) |
| September 29 | 96.1°F (1953) | 27.0°F (1942) | 0.65 in (1972) |
| September 30 | 93.9°F (2019) | 33.1°F (1949) | 2.50 in (1955) |