September weather in Marion, IL
The average temperature in Marion in September is °F (°F–°F). Average precipitation: 3.09 inches.
September is a fall month in Marion, and is cooler than the annual average of 0°F. Expect about 6 days with precipitation. Daylight averages about 12h 14m.
Avg High
°F
Avg Low
°F
Precipitation
3.09 in
Daylight
12h 14m
September records in Marion
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 2.67 in (2012) |
| September 2 | — | — | 2.96 in (2012) |
| September 3 | — | — | 1.60 in (1993) |
| September 4 | — | — | 0.45 in (1991) |
| September 5 | — | — | 1.86 in (2021) |
| September 6 | — | — | 1.49 in (2009) |
| September 7 | — | — | 0.53 in (1992) |
| September 8 | — | — | 3.77 in (2018) |
| September 9 | — | — | 2.18 in (2015) |
| September 10 | — | — | 1.51 in (2016) |
| September 11 | — | — | 2.33 in (1984) |
| September 12 | — | — | 2.77 in (1988) |
| September 13 | — | — | 0.34 in (2020) |
| September 14 | — | — | 2.59 in (2024) |
| September 15 | — | — | 1.55 in (1993) |
| September 16 | — | — | 2.55 in (1996) |
| September 17 | — | — | 1.68 in (1980) |
| September 18 | — | — | 1.36 in (1986) |
| September 19 | — | — | 1.31 in (2001) |
| September 20 | — | — | 1.02 in (2005) |
| September 21 | — | — | 1.27 in (1992) |
| September 22 | — | — | 0.80 in (1991) |
| September 23 | — | — | 2.50 in (1984) |
| September 24 | — | — | 2.38 in (2024) |
| September 25 | — | — | 1.31 in (2018) |
| September 26 | — | — | 1.03 in (2005) |
| September 27 | — | — | 2.68 in (2024) |
| September 28 | — | — | 0.93 in (2024) |
| September 29 | — | — | 0.71 in (1987) |
| September 30 | — | — | 0.41 in (2003) |