October weather in Jacksonville, IL
The average temperature in Jacksonville in October is 54.9°F (42.9°F–67.0°F). Average precipitation: 3.11 inches.
October is a fall month in Jacksonville, and is warmer than the annual average of 52.8°F. Daily temperatures swing about 24.1°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
67.0°F
Avg Low
42.9°F
Precipitation
3.11 in
Daylight
10h 55m
October records in Jacksonville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 90.0°F (2023) | 43.0°F (2009) | 0.90 in (2007) |
| October 2 | 88.0°F (2006) | 39.0°F (2020) | 1.08 in (2014) |
| October 3 | 91.9°F (2006) | 39.0°F (2020) | 1.46 in (2014) |
| October 4 | 93.9°F (2006) | 36.0°F (2010) | 0.81 in (2013) |
| October 5 | 88.0°F (2006) | 33.1°F (2020) | 1.30 in (1949) |
| October 6 | 90.0°F (2007) | 33.1°F (2020) | 0.74 in (2023) |
| October 7 | 89.1°F (2007) | 34.0°F (2012) | 0.50 in (2021) |
| October 8 | 91.0°F (2007) | 32.0°F (2012) | 1.64 in (2018) |
| October 9 | 88.0°F (2007) | 32.0°F (2012) | 2.68 in (2009) |
| October 10 | 87.1°F (2010) | 33.1°F (2009) | 1.17 in (2003) |
| October 11 | 86.0°F (2010) | 34.0°F (2009) | 0.82 in (2006) |
| October 12 | 84.9°F (2010) | 30.0°F (2006) | 1.30 in (2021) |
| October 13 | 87.1°F (2024) | 30.9°F (2006) | 0.43 in (2004) |
| October 14 | 81.0°F (2025) | 32.0°F (2006) | 2.70 in (2012) |
| October 15 | 86.0°F (2017) | 32.0°F (2006) | 0.74 in (2004) |
| October 16 | 81.0°F (2016) | 28.9°F (2018) | 0.49 in (2021) |
| October 17 | 86.0°F (2016) | 28.9°F (2018) | 1.19 in (2006) |
| October 18 | 88.0°F (2016) | 27.0°F (2022) | 0.96 in (2012) |
| October 19 | 82.9°F (2016) | 24.1°F (2022) | 0.76 in (2025) |
| October 20 | 81.0°F (2017) | 25.0°F (2022) | 1.00 in (1949) |
| October 21 | 82.9°F (2007) | 26.1°F (2018) | 2.05 in (1949) |
| October 22 | 84.0°F (2007) | 26.1°F (2018) | 0.40 in (2006) |
| October 23 | 82.9°F (2020) | 28.9°F (2006) | 1.96 in (2009) |
| October 24 | 79.0°F (2010) | 26.1°F (2006) | 3.60 in (2021) |
| October 25 | 82.0°F (2012) | 24.1°F (2013) | 0.88 in (2021) |
| October 26 | 80.1°F (2011) | 25.0°F (2013) | 1.55 in (2022) |
| October 27 | 73.9°F (2014) | 27.0°F (2013) | 0.91 in (2004) |
| October 28 | 75.9°F (2014) | 27.0°F (2008) | 0.61 in (2015) |
| October 29 | 73.9°F (2016) | 23.0°F (2017) | 1.52 in (2023) |
| October 30 | 82.9°F (2016) | 26.1°F (2017) | 2.58 in (2009) |
| October 31 | 81.0°F (2024) | 24.1°F (2023) | 0.75 in (2024) |