September weather in DeWitt, IA
The average temperature in DeWitt in September is °F (°F–°F). Average precipitation: 3.68 inches.
September is a fall month in DeWitt, and is cooler than the annual average of 0°F. Expect about 7 days with precipitation. Daylight averages about 12h 16m.
Avg High
°F
Avg Low
°F
Precipitation
3.68 in
Daylight
12h 16m
September records in DeWitt
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 2.23 in (1989) |
| September 2 | — | — | 0.33 in (2020) |
| September 3 | — | — | 2.61 in (1970) |
| September 4 | — | — | 1.45 in (2011) |
| September 5 | — | — | 1.35 in (2008) |
| September 6 | — | — | 2.91 in (2020) |
| September 7 | — | — | 1.14 in (1969) |
| September 8 | — | — | 4.54 in (2016) |
| September 9 | — | — | 1.19 in (1965) |
| September 10 | — | — | 2.68 in (2014) |
| September 11 | — | — | 1.41 in (2022) |
| September 12 | — | — | 1.94 in (1963) |
| September 13 | — | — | 2.90 in (1961) |
| September 14 | — | — | 2.79 in (1961) |
| September 15 | — | — | 1.50 in (1998) |
| September 16 | — | — | 1.00 in (2013) |
| September 17 | — | — | 1.85 in (1992) |
| September 18 | — | — | 2.70 in (2015) |
| September 19 | — | — | 3.53 in (2001) |
| September 20 | — | — | 2.85 in (1965) |
| September 21 | — | — | 1.67 in (1965) |
| September 22 | — | — | 2.70 in (1970) |
| September 23 | — | — | 1.20 in (2000) |
| September 24 | — | — | 2.10 in (1970) |
| September 25 | — | — | 1.52 in (1981) |
| September 26 | — | — | 1.44 in (1993) |
| September 27 | — | — | 2.61 in (1973) |
| September 28 | — | — | 1.90 in (1999) |
| September 29 | — | — | 2.38 in (2019) |
| September 30 | — | — | 1.24 in (1977) |