September weather in Holiday Hills, IL
The average temperature in Holiday Hills in September is 63.6°F (51.4°F–75.7°F). Average precipitation: 3.61 inches.
September is a fall month in Holiday Hills, and is warmer than the annual average of 48.6°F. Daily temperatures swing about 24.3°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
75.7°F
Avg Low
51.4°F
Precipitation
3.61 in
Daylight
12h 16m
September records in Holiday Hills
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (2012) | 43.0°F (1994) | 0.98 in (1980) |
| September 2 | 93.0°F (2000) | 43.0°F (2001) | 2.30 in (2018) |
| September 3 | 91.9°F (1999) | 44.1°F (2017) | 1.90 in (2018) |
| September 4 | 91.9°F (2023) | 39.9°F (1997) | 1.50 in (2018) |
| September 5 | 93.9°F (2023) | 39.9°F (1997) | 2.02 in (2008) |
| September 6 | 91.9°F (1999) | 39.9°F (2000) | 0.55 in (2014) |
| September 7 | 91.0°F (1998) | 39.0°F (2025) | 2.06 in (2001) |
| September 8 | 88.0°F (2005) | 37.9°F (2025) | 1.54 in (2020) |
| September 9 | 89.1°F (2002) | 42.1°F (1995) | 1.63 in (1980) |
| September 10 | 89.1°F (2013) | 39.9°F (2008) | 0.90 in (2019) |
| September 11 | 91.0°F (2013) | 37.9°F (1993) | 0.92 in (2015) |
| September 12 | 89.1°F (2019) | 41.0°F (2007) | 4.55 in (2019) |
| September 13 | 88.0°F (1998) | 37.0°F (2014) | 2.55 in (2008) |
| September 14 | 91.0°F (1998) | 39.0°F (2013) | 2.19 in (2008) |
| September 15 | 89.1°F (1994) | 34.0°F (2007) | 1.26 in (1998) |
| September 16 | 89.1°F (1994) | 37.9°F (2000) | 1.15 in (2013) |
| September 17 | 91.0°F (2024) | 39.0°F (2014) | 1.52 in (2023) |
| September 18 | 93.0°F (2018) | 39.0°F (1995) | 1.83 in (2015) |
| September 19 | 87.1°F (2025) | 32.0°F (2012) | 1.16 in (2001) |
| September 20 | 90.0°F (2021) | 36.0°F (2012) | 1.03 in (1997) |
| September 21 | 91.9°F (2018) | 36.0°F (2006) | 1.10 in (1950) |
| September 22 | 93.0°F (2017) | 34.0°F (1995) | 1.62 in (2019) |
| September 23 | 96.1°F (2017) | 28.0°F (1995) | 2.64 in (2000) |
| September 24 | 90.0°F (2017) | 30.0°F (2012) | 0.74 in (2024) |
| September 25 | 90.0°F (2017) | 36.0°F (2012) | 3.51 in (1986) |
| September 26 | 91.9°F (2017) | 37.0°F (2000) | 1.33 in (1993) |
| September 27 | 91.0°F (2017) | 37.0°F (2012) | 2.84 in (1986) |
| September 28 | 88.0°F (2021) | 39.0°F (2022) | 3.47 in (1999) |
| September 29 | 81.0°F (2013) | 34.0°F (2006) | 0.80 in (1999) |
| September 30 | 89.1°F (2025) | 28.0°F (1993) | 0.60 in (1986) |