September weather in Sycamore, IL
The average temperature in Sycamore in September is °F (°F–°F). Average precipitation: 3.44 inches.
September is a fall month in Sycamore, 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
3.44 in
Daylight
12h 16m
September records in Sycamore
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | — | — | 0.52 in (2020) |
| September 2 | — | — | 1.38 in (2018) |
| September 3 | — | — | 1.80 in (2018) |
| September 4 | — | — | 0.97 in (2001) |
| September 5 | — | — | 1.49 in (2006) |
| September 6 | — | — | 0.84 in (2020) |
| September 7 | — | — | 1.16 in (2001) |
| September 8 | — | — | 1.76 in (2020) |
| September 9 | — | — | 1.20 in (2020) |
| September 10 | — | — | 1.21 in (2014) |
| September 11 | — | — | 0.76 in (2006) |
| September 12 | — | — | 3.03 in (2000) |
| September 13 | — | — | 2.82 in (2019) |
| September 14 | — | — | 1.62 in (2008) |
| September 15 | — | — | 0.65 in (2008) |
| September 16 | — | — | 0.83 in (2013) |
| September 17 | — | — | 0.80 in (2023) |
| September 18 | — | — | 0.73 in (2015) |
| September 19 | — | — | 1.74 in (2001) |
| September 20 | — | — | 3.13 in (2023) |
| September 21 | — | — | 2.72 in (2001) |
| September 22 | — | — | 1.41 in (2016) |
| September 23 | — | — | 1.92 in (2024) |
| September 24 | — | — | 0.55 in (2001) |
| September 25 | — | — | 0.59 in (2024) |
| September 26 | — | — | 1.22 in (2011) |
| September 27 | — | — | 2.28 in (2011) |
| September 28 | — | — | 4.05 in (1999) |
| September 29 | — | — | 1.31 in (1999) |
| September 30 | — | — | 0.67 in (2008) |