Weather on August 12
Naperville, IL
55 Years of Data
Avg High
84°F
Avg Low
60°F
Warmest
1995
86°F avg
Coldest
2004
57°F avg
About This Date
August 12th in Naperville, IL typically brings warm summer weather, with average highs around 84°F and lows near 60°F. Over 54 years of records, the warmest August 12th was in 1995 (86°F average), while the coldest was 2004 (57°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 30% of August 12th dates historically, with the wettest August 12th recording 4.27" of rain. The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
Planning for August 12th in Naperville, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 69° | 78° | 1.42" | — |
| 2024 | 78° | 54° | 66° | — | — |
| 2023 | 83° | 63° | 73° | — | — |
| 2022 | 79° | 54° | 66° | — | — |
| 2021 | 87° | 71° | 79° | 0.38" | — |
| 2020 | 85° | 55° | 70° | — | — |
| 2019 | 80° | 65° | 72° | 0.53" | — |
| 2018 | 87° | 60° | 74° | 1.4" | — |
| 2017 | 78° | 53° | 66° | — | — |
| 2016 | 92° | 73° | 82° | — | — |
| 2015 | 82° | 55° | 69° | — | — |
| 2014 | 82° | 62° | 72° | 0.38" | — |
| 2013 | 82° | 54° | 68° | — | — |
| 2012 | 80° | 53° | 67° | — | — |
| 2011 | 80° | 54° | 67° | — | — |
| 2010 | 93° | 73° | 83° | — | — |
| 2009 | 83° | 55° | 69° | — | — |
| 2008 | 66° | 52° | 59° | — | — |
| 2007 | 88° | 67° | 77° | 0.86" | — |
| 2006 | 80° | 60° | 70° | — | — |
| 2005 | 83° | 72° | 77° | 1.45" | — |
| 2004coldest | 64° | 50° | 57° | — | — |
| 2003 | 76° | 66° | 71° | 0.05" | — |
| 2002 | 95° | 70° | 82° | — | — |
| 2001 | 87° | 56° | 71° | — | — |
| 2000 | 86° | 58° | 72° | — | — |
| 1999 | 88° | 62° | 75° | 0.2" | — |
| 1998 | 83° | 60° | 71° | — | — |
| 1997 | 73° | 63° | 68° | 4.27" | — |
| 1996 | 85° | 57° | 71° | — | — |
| 1995warmest | 99° | 73° | 86° | — | — |
| 1994 | 68° | 62° | 65° | — | — |
| 1993 | 89° | 69° | 79° | — | — |
| 1992 | 81° | 56° | 68° | — | — |
| 1991 | 87° | 52° | 69° | — | — |
| 1990 | — | 57° | — | 0.3" | — |
| 1989 | 88° | 52° | 70° | — | — |
| 1988 | 93° | 73° | 83° | — | — |
| 1987 | 89° | 61° | 75° | — | — |
| 1985 | 88° | 60° | 74° | — | — |
| 1984 | 84° | 63° | 73° | — | — |
| 1983 | 86° | 54° | 70° | — | — |
| 1982 | 78° | 48° | 63° | — | — |
| 1981 | 84° | 62° | 73° | — | — |
| 1980 | 81° | 60° | 70° | 0.61" | — |
| 1979 | 77° | 48° | 63° | — | — |
| 1978 | 86° | 63° | 74° | — | — |
| 1977 | 80° | 48° | 64° | 0.18" | — |
| 1976 | 86° | 65° | 75° | 0.48" | — |
| 1975 | 91° | 60° | 76° | 0.23" | — |
| 1974 | 86° | 55° | 71° | — | — |
| 1973 | 86° | 61° | 73° | — | — |
| 1972 | 85° | 62° | 73° | 0.36" | — |
| 1971 | 84° | 51° | 68° | — | — |
54 years of data from LISLE - MORTON ARBORETUM