October weather in Allerton, IL
The average temperature in Allerton in October is 54.1°F (42.8°F–65.4°F). Average precipitation: 3.33 inches.
October is a fall month in Allerton, and is warmer than the annual average of 51.5°F. Daily temperatures swing about 22.6°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 10h 55m. For travel, October is a comfortable month to visit.
Avg High
65.4°F
Avg Low
42.8°F
Precipitation
3.33 in
Daylight
10h 55m
October records in Allerton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 89.1°F (2019) | 33.1°F (2003) | 2.22 in (1977) |
| October 2 | 91.0°F (2019) | 26.1°F (2003) | 1.20 in (1988) |
| October 3 | 89.1°F (2002) | 27.0°F (2003) | 1.40 in (1995) |
| October 4 | 90.0°F (2025) | 30.9°F (2010) | 0.79 in (1986) |
| October 5 | 89.1°F (2006) | 28.0°F (2020) | 1.30 in (1955) |
| October 6 | 88.0°F (2007) | 30.0°F (2004) | 2.16 in (1949) |
| October 7 | 88.0°F (2007) | 30.9°F (2012) | 2.08 in (1955) |
| October 8 | 91.0°F (2007) | 28.0°F (2012) | 0.80 in (2008) |
| October 9 | 90.0°F (2007) | 28.9°F (2012) | 2.10 in (2009) |
| October 10 | 87.1°F (2018) | 33.1°F (2009) | 1.70 in (1990) |
| October 11 | 87.1°F (2010) | 32.0°F (2009) | 1.78 in (1959) |
| October 12 | 84.0°F (2010) | 28.9°F (2006) | 3.42 in (1969) |
| October 13 | 86.0°F (2008) | 27.0°F (2006) | 0.60 in (2004) |
| October 14 | 80.1°F (2008) | 27.0°F (2002) | 2.25 in (2001) |
| October 15 | 84.0°F (2017) | 28.0°F (2006) | 1.53 in (2021) |
| October 16 | 82.0°F (2008) | 26.1°F (2020) | 1.92 in (1971) |
| October 17 | 73.9°F (2025) | 28.0°F (2004) | 1.56 in (2006) |
| October 18 | 82.9°F (2016) | 25.0°F (2015) | 1.80 in (1946) |
| October 19 | 82.0°F (2025) | 26.1°F (2022) | 1.81 in (2025) |
| October 20 | 77.0°F (2017) | 26.1°F (2022) | 1.44 in (2011) |
| October 21 | 82.9°F (2003) | 21.9°F (2018) | 2.10 in (2020) |
| October 22 | 81.0°F (2024) | 24.1°F (2018) | 3.75 in (1983) |
| October 23 | 81.0°F (2020) | 30.9°F (2010) | 1.51 in (1957) |
| October 24 | 78.1°F (2010) | 25.0°F (2006) | 1.87 in (1951) |
| October 25 | 79.0°F (2023) | 25.0°F (2006) | 1.90 in (2021) |
| October 26 | 77.0°F (2004) | 33.1°F (2006) | 1.53 in (2022) |
| October 27 | 77.0°F (2023) | 30.0°F (2012) | 2.00 in (1991) |
| October 28 | 81.0°F (2023) | 27.0°F (2008) | 1.28 in (2015) |
| October 29 | 73.0°F (2024) | 23.0°F (2010) | 1.31 in (1917) |
| October 30 | 82.0°F (2024) | 21.9°F (2010) | 0.95 in (1991) |
| October 31 | 80.1°F (2024) | 28.9°F (2020) | 0.60 in (2009) |