September weather in Millbrook, IL
The average temperature in Millbrook in September is °F (°F–°F). Average precipitation: 3.56 inches.
September is a fall month in Millbrook, and is cooler than the annual average of 0°F. Daylight averages about 12h 16m.
Avg High
°F
Avg Low
°F
Precipitation
3.56 in
Daylight
12h 16m
September records in Millbrook
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 0.89 in (2013) |
| September 2 | — | — | 0.41 in (2012) |
| September 3 | — | — | 0.01 in (1997) |
| September 4 | — | — | 0.23 in (2011) |
| September 5 | — | — | 0.37 in (2014) |
| September 6 | — | — | 0.71 in (2014) |
| September 7 | — | — | 0.79 in (2018) |
| September 8 | — | — | 1.83 in (2016) |
| September 9 | — | — | 1.32 in (2015) |
| September 10 | — | — | 1.22 in (2014) |
| September 11 | — | — | 0.68 in (2014) |
| September 12 | — | — | 0.23 in (2015) |
| September 13 | — | — | 0.10 in (2014) |
| September 14 | — | — | 0.26 in (2012) |
| September 15 | — | — | 0.07 in (2011) |
| September 16 | — | — | 0.47 in (2013) |
| September 17 | — | — | 1.06 in (1997) |
| September 18 | — | — | 0.63 in (2015) |
| September 19 | — | — | 1.49 in (2015) |
| September 20 | — | — | 0.46 in (2013) |
| September 21 | — | — | 0.46 in (2016) |
| September 22 | — | — | 0.48 in (2016) |
| September 23 | — | — | 0.21 in (1997) |
| September 24 | — | — | 0.03 in (1997) |
| September 25 | — | — | 0.00 in (1997) |
| September 26 | — | — | 0.96 in (2011) |
| September 27 | — | — | 1.24 in (2011) |
| September 28 | — | — | 0.16 in (2011) |
| September 29 | — | — | 0.29 in (2013) |
| September 30 | — | — | 0.29 in (2016) |