September weather in Oak Brook, IL
The average temperature in Oak Brook in September is °F (°F–°F). Average precipitation: 3.45 inches.
September is a fall month in Oak Brook, and is cooler than the annual average of 0°F. Expect about 9 days with precipitation. Daylight averages about 12h 16m.
Avg High
°F
Avg Low
°F
Precipitation
3.45 in
Daylight
12h 16m
September records in Oak Brook
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 2.04 in (2013) |
| September 2 | — | — | 0.54 in (2003) |
| September 3 | — | — | 1.57 in (2010) |
| September 4 | — | — | 0.79 in (2006) |
| September 5 | — | — | 2.61 in (2008) |
| September 6 | — | — | 0.15 in (2012) |
| September 7 | — | — | 0.15 in (2007) |
| September 8 | — | — | 0.30 in (2007) |
| September 9 | — | — | 1.09 in (2008) |
| September 10 | — | — | 0.27 in (2006) |
| September 11 | — | — | 1.04 in (2006) |
| September 12 | — | — | 0.99 in (2006) |
| September 13 | — | — | 2.80 in (2008) |
| September 14 | — | — | 2.04 in (2008) |
| September 15 | — | — | 1.04 in (2008) |
| September 16 | — | — | 0.34 in (2013) |
| September 17 | — | — | 0.01 in (2010) |
| September 18 | — | — | 0.42 in (2006) |
| September 19 | — | — | 0.72 in (2011) |
| September 20 | — | — | 0.30 in (2002) |
| September 21 | — | — | 0.60 in (2009) |
| September 22 | — | — | 0.41 in (2003) |
| September 23 | — | — | 0.63 in (2006) |
| September 24 | — | — | 0.80 in (2006) |
| September 25 | — | — | 0.44 in (2005) |
| September 26 | — | — | 1.30 in (2011) |
| September 27 | — | — | 0.59 in (2003) |
| September 28 | — | — | 0.23 in (2009) |
| September 29 | — | — | 0.69 in (2011) |
| September 30 | — | — | 0.70 in (2008) |