October weather in Forest Park, IL
The average temperature in Forest Park in October is 54.9°F (46.5°F–63.4°F). Average precipitation: 3.48 inches.
October is a fall month in Forest Park, and is warmer than the annual average of 52.1°F. Daily temperatures swing about 16.9°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 10h 50m. For travel, October is a comfortable month to visit.
Avg High
63.4°F
Avg Low
46.5°F
Precipitation
3.48 in
Daylight
10h 50m
October records in Forest Park
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 88.0°F (2019) | 36.0°F (2003) | 1.29 in (2016) |
| October 2 | 84.9°F (2023) | 32.0°F (2003) | 2.63 in (2006) |
| October 3 | 90.0°F (2025) | 39.0°F (2004) | 1.05 in (2014) |
| October 4 | 89.1°F (2025) | 37.0°F (2014) | 1.26 in (2001) |
| October 5 | 88.0°F (1997) | 36.0°F (2020) | 1.26 in (2018) |
| October 6 | 88.0°F (2007) | 35.1°F (2012) | 0.76 in (2016) |
| October 7 | 88.0°F (2007) | 32.0°F (2000) | 1.29 in (2025) |
| October 8 | 88.0°F (2007) | 34.0°F (2000) | 0.29 in (2008) |
| October 9 | 87.1°F (2010) | 33.1°F (2000) | 0.43 in (2009) |
| October 10 | 84.0°F (2010) | 33.1°F (2009) | 1.11 in (2018) |
| October 11 | 84.0°F (2024) | 29.1°F (2009) | 1.72 in (2021) |
| October 12 | 86.0°F (2008) | 32.0°F (2006) | 0.65 in (2001) |
| October 13 | 79.0°F (2000) | 34.0°F (2006) | 1.78 in (2001) |
| October 14 | 78.1°F (2020) | 35.1°F (2002) | 5.20 in (2017) |
| October 15 | 80.1°F (1999) | 33.1°F (2006) | 0.37 in (2024) |
| October 16 | 80.1°F (1998) | 34.0°F (2018) | 0.71 in (2006) |
| October 17 | 84.9°F (2016) | 30.9°F (2004) | 1.12 in (1998) |
| October 18 | 79.0°F (2007) | 33.1°F (2009) | 0.55 in (2025) |
| October 19 | 75.9°F (2000) | 35.1°F (2022) | 0.84 in (2011) |
| October 20 | 84.9°F (2003) | 32.0°F (2018) | 0.31 in (2008) |
| October 21 | 82.0°F (2024) | 28.2°F (2018) | 0.68 in (2020) |
| October 22 | 82.0°F (2022) | 31.1°F (2013) | 1.86 in (2020) |
| October 23 | 81.0°F (2022) | 32.0°F (2013) | 1.29 in (2009) |
| October 24 | 82.0°F (2023) | 1.9°F (2002) | 2.25 in (2021) |
| October 25 | 77.0°F (2012) | 29.1°F (2013) | 0.87 in (2022) |
| October 26 | 77.0°F (2000) | 34.0°F (1997) | 2.26 in (2019) |
| October 27 | 79.0°F (2014) | 28.9°F (1997) | 0.44 in (1998) |
| October 28 | 81.0°F (1999) | 28.0°F (1997) | 0.28 in (2021) |
| October 29 | 82.9°F (2024) | 33.1°F (2008) | 1.05 in (2009) |
| October 30 | 81.0°F (2024) | 30.2°F (2020) | 1.16 in (2013) |
| October 31 | 72.0°F (2000) | 26.2°F (2019) | 2.03 in (2013) |