September weather in East Brooklyn, IL
The average temperature in East Brooklyn in September is 64.2°F (51.3°F–77.1°F). Average precipitation: 3.25 inches.
September is a fall month in East Brooklyn, and is warmer than the annual average of 49.3°F. Daily temperatures swing about 25.8°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
77.1°F
Avg Low
51.3°F
Precipitation
3.25 in
Daylight
12h 16m
September records in East Brooklyn
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (2000) | 43.0°F (2009) | 1.48 in (2003) |
| September 2 | 100.0°F (2000) | 41.0°F (2017) | 1.15 in (2012) |
| September 3 | 97.0°F (2000) | 43.0°F (2017) | 2.01 in (1993) |
| September 4 | 91.9°F (1999) | 44.1°F (2020) | 1.12 in (2019) |
| September 5 | 93.0°F (1999) | 43.0°F (1997) | 2.45 in (2008) |
| September 6 | 95.0°F (1998) | 43.0°F (2000) | 0.78 in (1993) |
| September 7 | 97.0°F (1998) | 42.1°F (2025) | 1.33 in (2001) |
| September 8 | 91.0°F (2015) | 37.9°F (2025) | 2.61 in (2016) |
| September 9 | 91.9°F (1991) | 37.9°F (2025) | 0.81 in (1996) |
| September 10 | 93.0°F (2013) | 39.9°F (2025) | 2.28 in (1992) |
| September 11 | 93.9°F (2005) | 39.9°F (1993) | 0.55 in (2015) |
| September 12 | 95.0°F (2000) | 43.0°F (2017) | 1.66 in (2000) |
| September 13 | 91.9°F (1991) | 37.0°F (2014) | 2.70 in (2008) |
| September 14 | 93.9°F (1998) | 37.0°F (2014) | 2.80 in (2008) |
| September 15 | 91.9°F (1994) | 36.0°F (2011) | 2.75 in (2008) |
| September 16 | 89.1°F (1994) | 36.0°F (2011) | 0.75 in (2004) |
| September 17 | 90.0°F (2018) | 41.0°F (2014) | 1.05 in (1997) |
| September 18 | 90.0°F (2018) | 35.1°F (1991) | 0.25 in (2012) |
| September 19 | 89.1°F (2025) | 33.1°F (1991) | 2.00 in (2001) |
| September 20 | 91.9°F (2021) | 33.1°F (1991) | 0.29 in (2025) |
| September 21 | 93.9°F (2018) | 35.1°F (1991) | 0.96 in (1992) |
| September 22 | 93.9°F (2024) | 35.1°F (1995) | 1.50 in (2023) |
| September 23 | 93.9°F (2017) | 27.0°F (1995) | 0.30 in (2000) |
| September 24 | 93.9°F (2017) | 28.0°F (1995) | 0.68 in (1994) |
| September 25 | 91.0°F (2017) | 33.1°F (1995) | 0.83 in (2024) |
| September 26 | 91.0°F (2017) | 34.0°F (1991) | 1.05 in (2011) |
| September 27 | 93.0°F (1998) | 39.0°F (2022) | 1.37 in (1996) |
| September 28 | 90.0°F (1998) | 37.9°F (2022) | 3.40 in (2019) |
| September 29 | 88.0°F (2025) | 34.0°F (1992) | 0.50 in (2005) |
| September 30 | 88.0°F (2021) | 28.9°F (1993) | 0.40 in (2016) |