September weather in Harvey, IL
The average temperature in Harvey in September is °F (°F–°F). Average precipitation: 3.49 inches.
September is a fall month in Harvey, and is cooler than the annual average of 0°F. Daylight averages about 12h 16m.
Avg High
°F
Avg Low
°F
Precipitation
3.49 in
Daylight
12h 16m
September records in Harvey
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 0.52 in (2013) |
| September 2 | — | — | 0.86 in (2020) |
| September 3 | — | — | 0.14 in (2019) |
| September 4 | — | — | 1.04 in (2011) |
| September 5 | — | — | 3.31 in (2008) |
| September 6 | — | — | 0.90 in (2014) |
| September 7 | — | — | 0.45 in (2018) |
| September 8 | — | — | 0.36 in (2020) |
| September 9 | — | — | 1.21 in (2015) |
| September 10 | — | — | 1.10 in (2014) |
| September 11 | — | — | 0.64 in (2014) |
| September 12 | — | — | 1.32 in (2015) |
| September 13 | — | — | 4.18 in (2008) |
| September 14 | — | — | 2.78 in (2008) |
| September 15 | — | — | 1.40 in (2008) |
| September 16 | — | — | 0.35 in (2013) |
| September 17 | — | — | 0.60 in (2023) |
| September 18 | — | — | 0.75 in (2015) |
| September 19 | — | — | 1.72 in (2015) |
| September 20 | — | — | 0.24 in (2023) |
| September 21 | — | — | 0.45 in (2024) |
| September 22 | — | — | 0.51 in (2025) |
| September 23 | — | — | 0.40 in (2019) |
| September 24 | — | — | 0.10 in (2006) |
| September 25 | — | — | 0.77 in (2024) |
| September 26 | — | — | 0.73 in (2011) |
| September 27 | — | — | 0.31 in (2011) |
| September 28 | — | — | 5.25 in (2019) |
| September 29 | — | — | 1.05 in (2019) |
| September 30 | — | — | 0.41 in (2016) |