August weather in Round Lake Park, IL
The average temperature in Round Lake Park in August is 70.8°F (60.9°F–80.7°F). Average precipitation: 4.19 inches.
August is a summer month in Round Lake Park, and is warmer than the annual average of 47.9°F. Daily temperatures swing about 19.8°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 43m. For travel, August is a comfortable month to visit.
Avg High
80.7°F
Avg Low
60.9°F
Precipitation
4.19 in
Daylight
13h 43m
August records in Round Lake Park
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 96.1°F (2002) | 51.1°F (2019) | 1.34 in (2000) |
| August 2 | 96.1°F (2002) | 53.1°F (2009) | 0.51 in (2009) |
| August 3 | 93.0°F (2006) | 55.0°F (2000) | 0.57 in (2015) |
| August 4 | 91.9°F (2002) | 53.1°F (2000) | 0.79 in (2004) |
| August 5 | 95.0°F (2018) | 48.0°F (2020) | 2.15 in (2007) |
| August 6 | 91.0°F (2001) | 48.9°F (2004) | 0.35 in (2021) |
| August 7 | 93.9°F (2001) | 53.1°F (2002) | 2.68 in (2007) |
| August 8 | 96.1°F (2001) | 52.0°F (2017) | 1.54 in (2011) |
| August 9 | 96.1°F (2001) | 54.0°F (2002) | 0.87 in (2010) |
| August 10 | 96.1°F (2001) | 53.1°F (2008) | 1.30 in (2021) |
| August 11 | 90.0°F (2002) | 52.0°F (2012) | 1.02 in (2015) |
| August 12 | 95.0°F (2002) | 48.9°F (2004) | 1.34 in (2005) |
| August 13 | 91.0°F (2002) | 51.1°F (2004) | 0.39 in (1999) |
| August 14 | 91.0°F (2010) | 48.0°F (2013) | 1.23 in (2002) |
| August 15 | 87.1°F (2000) | 45.0°F (2004) | 1.41 in (2023) |
| August 16 | 91.0°F (2000) | 48.9°F (2004) | 1.03 in (2001) |
| August 17 | 93.0°F (2003) | 52.0°F (2013) | 0.68 in (2000) |
| August 18 | 88.0°F (2002) | 48.9°F (2012) | 0.24 in (2000) |
| August 19 | 88.0°F (2016) | 51.1°F (2012) | 2.54 in (2007) |
| August 20 | 86.0°F (2003) | 53.1°F (2002) | 1.49 in (2007) |
| August 21 | 91.9°F (2003) | 48.0°F (2004) | 1.44 in (2011) |
| August 22 | 97.0°F (2003) | 50.0°F (2004) | 4.19 in (2002) |
| August 23 | 88.0°F (2007) | 52.0°F (2005) | 1.56 in (2007) |
| August 24 | 96.1°F (2023) | 53.1°F (2005) | 1.32 in (2006) |
| August 25 | 96.1°F (2023) | 46.9°F (2017) | 1.18 in (2006) |
| August 26 | 96.1°F (2003) | 48.9°F (2017) | 0.78 in (2009) |
| August 27 | 91.9°F (2003) | 46.9°F (2015) | 1.14 in (2009) |
| August 28 | 93.9°F (2020) | 51.1°F (2015) | 1.21 in (2016) |
| August 29 | 93.0°F (2003) | 53.1°F (2001) | 2.21 in (2017) |
| August 30 | 90.0°F (2010) | 50.0°F (2009) | 1.12 in (2015) |
| August 31 | 93.9°F (2013) | 45.0°F (2009) | 0.37 in (2013) |