July weather in Lerna, IL
The average temperature in Lerna in July is 75.7°F (65.7°F–85.6°F). Average precipitation: 3.96 inches.
July is a summer month in Lerna, and is warmer than the annual average of 53.4°F. Daily temperatures swing about 19.9°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 14h 31m. For travel, July is a comfortable month to visit.
Avg High
85.6°F
Avg Low
65.7°F
Precipitation
3.96 in
Daylight
14h 31m
July records in Lerna
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 99.0°F (2012) | 0.1°F (2008) | 1.66 in (2023) |
| July 2 | 100.0°F (2012) | 15.3°F (2010) | 1.18 in (2011) |
| July 3 | 97.0°F (2012) | 54.0°F (2021) | 2.10 in (2004) |
| July 4 | 102.0°F (2012) | 57.0°F (2013) | 0.95 in (2009) |
| July 5 | 104.0°F (2012) | 54.0°F (2014) | 2.07 in (2000) |
| July 6 | 102.9°F (2012) | 53.1°F (2001) | 0.92 in (2025) |
| July 7 | 106.0°F (2012) | 55.9°F (2006) | 1.88 in (2022) |
| July 8 | 93.9°F (2012) | 57.0°F (2015) | 1.35 in (2022) |
| July 9 | 97.0°F (2002) | 55.0°F (2007) | 3.65 in (2024) |
| July 10 | 93.0°F (2012) | 55.9°F (1999) | 1.35 in (2013) |
| July 11 | 93.9°F (2012) | 53.1°F (1999) | 1.03 in (2009) |
| July 12 | 93.0°F (2012) | 55.0°F (1999) | 2.41 in (2006) |
| July 13 | 91.9°F (2012) | 54.0°F (2001) | 1.14 in (2010) |
| July 14 | 90.0°F (2015) | 31.1°F (2009) | 0.76 in (2018) |
| July 15 | 93.0°F (2012) | 53.1°F (2014) | 1.76 in (2021) |
| July 16 | 96.1°F (2012) | 34.0°F (2010) | 1.00 in (2024) |
| July 17 | 99.0°F (2012) | 0.1°F (2008) | 2.09 in (2007) |
| July 18 | 102.0°F (2012) | 55.0°F (2008) | 0.35 in (2003) |
| July 19 | 99.0°F (2012) | 54.0°F (2014) | 1.95 in (2010) |
| July 20 | 96.1°F (2011) | 18.1°F (2008) | 1.05 in (2013) |
| July 21 | 98.1°F (2011) | 53.1°F (2007) | 2.60 in (2013) |
| July 22 | 96.1°F (1999) | -0.8°F (2008) | 1.50 in (2018) |
| July 23 | 102.0°F (2012) | 53.1°F (2000) | 0.93 in (2017) |
| July 24 | 100.9°F (2012) | 16.2°F (2008) | 0.24 in (2010) |
| July 25 | 102.9°F (2012) | 54.0°F (2013) | 1.91 in (2021) |
| July 26 | 96.1°F (2005) | 55.0°F (2004) | 1.75 in (2005) |
| July 27 | 96.1°F (2012) | 50.0°F (2004) | 1.05 in (2017) |
| July 28 | 97.0°F (2023) | 53.1°F (2013) | 0.81 in (2024) |
| July 29 | 97.0°F (1999) | 53.1°F (2013) | 0.75 in (2011) |
| July 30 | 99.0°F (1999) | 55.9°F (2017) | 1.47 in (2018) |
| July 31 | 100.0°F (2012) | 46.9°F (2007) | 0.31 in (2020) |