October weather in Lerna, IL
The average temperature in Lerna in October is 55.6°F (45.3°F–65.9°F). Average precipitation: 3.11 inches.
October is a fall month in Lerna, and is warmer than the annual average of 53.4°F. Daily temperatures swing about 20.6°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 10h 56m. For travel, October is a comfortable month to visit.
Avg High
65.9°F
Avg Low
45.3°F
Precipitation
3.11 in
Daylight
10h 56m
October records in Lerna
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 91.9°F (2019) | 34.0°F (2003) | 0.09 in (2004) |
| October 2 | 91.0°F (2019) | 28.9°F (2003) | 2.17 in (2014) |
| October 3 | 88.0°F (2025) | 32.0°F (2004) | 0.60 in (2007) |
| October 4 | 90.0°F (2006) | 32.0°F (2010) | 1.99 in (2000) |
| October 5 | 87.1°F (2007) | 30.0°F (2004) | 2.61 in (2017) |
| October 6 | 88.0°F (2007) | 32.0°F (2000) | 0.83 in (1998) |
| October 7 | 90.0°F (2007) | 28.9°F (2000) | 1.92 in (2021) |
| October 8 | 88.0°F (2007) | 30.2°F (2012) | 0.86 in (1999) |
| October 9 | 86.0°F (2010) | 27.0°F (2000) | 0.23 in (2009) |
| October 10 | 86.0°F (2010) | 34.0°F (2009) | 0.70 in (2017) |
| October 11 | 84.9°F (2010) | 31.1°F (2009) | 3.30 in (2019) |
| October 12 | 82.9°F (2008) | 31.1°F (2006) | 0.43 in (2004) |
| October 13 | 77.0°F (2008) | 32.0°F (2006) | 3.22 in (2001) |
| October 14 | 84.0°F (2017) | 30.9°F (2002) | 1.20 in (2003) |
| October 15 | 81.0°F (2008) | 29.1°F (2006) | 0.93 in (2021) |
| October 16 | 80.1°F (1999) | 28.2°F (2024) | 0.68 in (2006) |
| October 17 | 82.9°F (2016) | 30.2°F (2015) | 1.20 in (2012) |
| October 18 | 81.0°F (2007) | 30.2°F (2018) | 2.89 in (2004) |
| October 19 | 79.0°F (2003) | 29.1°F (2022) | 1.08 in (2011) |
| October 20 | 81.0°F (2003) | 28.2°F (2018) | 2.57 in (2020) |
| October 21 | 80.1°F (2015) | 24.3°F (2018) | 0.66 in (2020) |
| October 22 | 82.0°F (2015) | 30.0°F (1998) | 0.69 in (2017) |
| October 23 | 78.1°F (2010) | 30.2°F (2006) | 1.44 in (2017) |
| October 24 | 78.1°F (2010) | 25.2°F (2006) | 1.15 in (2021) |
| October 25 | 78.1°F (2014) | 26.2°F (2013) | 1.09 in (2002) |
| October 26 | 75.0°F (2023) | 32.0°F (2013) | 1.60 in (2019) |
| October 27 | 79.0°F (2014) | 28.0°F (2001) | 0.54 in (2015) |
| October 28 | 80.1°F (1999) | 25.2°F (2008) | 0.55 in (2023) |
| October 29 | 80.1°F (2024) | 24.3°F (2010) | 0.69 in (2023) |
| October 30 | 78.1°F (2024) | 28.2°F (2023) | 0.55 in (2004) |
| October 31 | 79.0°F (1999) | 26.2°F (2023) | 0.74 in (2013) |