Weather on August 23
Naperville, IL
55 Years of Data
Avg High
83°F
Avg Low
61°F
Warmest
1975
81°F avg
Coldest
2024
62°F avg
About This Date
August 23rd in Naperville, IL typically brings warm summer weather, with average highs around 83°F and lows near 61°F. Over 54 years of records, the warmest August 23rd was in 1975 (81°F average), while the coldest was 2024 (62°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 31% of August 23rd dates historically, with the wettest August 23rd recording 2.18" of rain. The last decade has been 4.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.4°F cooler on this date compared to 20-30 years ago.
Planning for August 23rd in Naperville, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 58° | 69° | — | — |
| 2024coldest | 77° | 47° | 62° | — | — |
| 2023 | 88° | 67° | 77° | — | — |
| 2022 | 83° | 57° | 70° | — | — |
| 2021 | 87° | 60° | 74° | 0.03" | — |
| 2020 | 86° | 57° | 72° | — | — |
| 2019 | 80° | 54° | 67° | — | — |
| 2018 | 79° | 52° | 65° | — | — |
| 2017 | 80° | 52° | 66° | 0.03" | — |
| 2016 | 79° | 57° | 68° | — | — |
| 2015 | 80° | 56° | 68° | — | — |
| 2014 | 85° | 70° | 77° | — | — |
| 2013 | 73° | 57° | 65° | 1.68" | — |
| 2012 | 85° | 48° | 66° | — | — |
| 2011 | 83° | 57° | 70° | — | — |
| 2010 | 82° | 60° | 71° | — | — |
| 2009 | 75° | 53° | 64° | — | — |
| 2008 | 77° | 66° | 72° | 0.25" | — |
| 2007 | 90° | 69° | 79° | 2.08" | — |
| 2006 | 87° | 59° | 73° | — | — |
| 2005 | 74° | 53° | 63° | — | — |
| 2004 | 83° | 65° | 74° | — | — |
| 2003 | 82° | 55° | 69° | — | — |
| 2002 | 81° | 68° | 74° | 2.18" | — |
| 2001 | 88° | 69° | 78° | 0.36" | — |
| 2000 | 88° | 71° | 79° | — | — |
| 1999 | 82° | 65° | 73° | 0.08" | — |
| 1998 | 93° | 70° | 81° | 0.15" | — |
| 1997 | 79° | 51° | 65° | — | — |
| 1996 | 89° | 66° | 78° | 0.81" | — |
| 1995 | 89° | 58° | 73° | — | — |
| 1994 | 82° | 55° | 69° | — | — |
| 1993 | 92° | 70° | 81° | — | — |
| 1992 | 86° | 64° | 75° | — | — |
| 1991 | 92° | 59° | 75° | — | — |
| 1990 | 79° | 63° | 71° | — | — |
| 1989 | 84° | 69° | 77° | 0.79" | — |
| 1988 | 86° | 66° | 76° | — | — |
| 1987 | 74° | — | — | — | — |
| 1985 | 81° | 57° | 69° | — | — |
| 1984 | 76° | 55° | 65° | — | — |
| 1983 | 85° | 63° | 74° | — | — |
| 1982 | 84° | 64° | 74° | — | — |
| 1981 | 81° | 60° | 70° | — | — |
| 1980 | 85° | 53° | 69° | — | — |
| 1979 | 82° | 65° | 73° | — | — |
| 1978 | 89° | 62° | 76° | 0.2" | — |
| 1977 | 78° | 62° | 70° | 0.18" | — |
| 1976 | 87° | 62° | 75° | — | — |
| 1975warmest | 93° | 68° | 81° | — | — |
| 1974 | 81° | 59° | 70° | 0.33" | — |
| 1973 | 76° | 58° | 67° | 1.73" | — |
| 1972 | 77° | 69° | 73° | 1.91" | — |
| 1971 | 81° | 60° | 70° | 0.08" | — |
54 years of data from WHEATON 3 SE