Weather on August 19
Naperville, IL
55 Years of Data
Avg High
82°F
Avg Low
60°F
Warmest
1983
88°F avg
Coldest
1977
59°F avg
About This Date
August 19th in Naperville, IL typically brings warm summer weather, with average highs around 82°F and lows near 60°F. Over 54 years of records, the warmest August 19th was in 1983 (88°F average), while the coldest was 1977 (59°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 39% of August 19th dates historically, with the wettest August 19th recording 5.97" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for August 19th in Naperville, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 70° | 79° | 5.97" | — |
| 2024 | 78° | 57° | 68° | 0.1" | — |
| 2023 | 79° | 50° | 64° | — | — |
| 2022 | 83° | 58° | 70° | — | — |
| 2021 | 85° | 63° | 74° | 0.05" | — |
| 2020 | 78° | 53° | 66° | — | — |
| 2019 | 82° | 64° | 73° | 4.01" | — |
| 2018 | 81° | 61° | 71° | — | — |
| 2017 | 82° | 57° | 70° | — | — |
| 2016 | 86° | 68° | 77° | 0.05" | — |
| 2015 | 82° | 67° | 74° | 1.32" | — |
| 2014 | 82° | 64° | 73° | — | — |
| 2013 | 83° | 53° | 68° | — | — |
| 2012 | 77° | 49° | 63° | — | — |
| 2011 | 85° | 60° | 72° | — | — |
| 2010 | 83° | 62° | 72° | — | — |
| 2009 | 83° | 57° | 70° | 1.07" | — |
| 2008 | 76° | 43° | 59° | — | — |
| 2007 | 68° | 58° | 63° | 1.52" | — |
| 2006 | 79° | 70° | 74° | 0.76" | — |
| 2005 | 87° | 69° | 78° | 0.99" | — |
| 2004 | 76° | 59° | 67° | 0.38" | — |
| 2003 | 80° | 58° | 69° | — | — |
| 2002 | 78° | 62° | 70° | 0.28" | — |
| 2001 | 75° | 60° | 68° | 0.61" | — |
| 2000 | 79° | 55° | 67° | — | — |
| 1999 | 76° | 63° | 69° | 1.3" | — |
| 1998 | 83° | 58° | 70° | — | — |
| 1997 | 72° | 53° | 62° | — | — |
| 1996 | 87° | 61° | 74° | 0.23" | — |
| 1995 | 90° | 72° | 81° | — | — |
| 1994 | 89° | 67° | 78° | — | — |
| 1993 | 87° | 70° | 78° | — | — |
| 1992 | 79° | 50° | 64° | — | — |
| 1991 | 73° | 60° | 67° | — | — |
| 1990 | 94° | 70° | 82° | — | — |
| 1989 | 80° | 53° | 67° | — | — |
| 1988 | 80° | 69° | 75° | 0.79" | — |
| 1987 | 82° | 57° | 70° | 1.14" | — |
| 1985 | 75° | 51° | 63° | — | — |
| 1984 | 80° | 56° | 68° | — | — |
| 1983warmest | 98° | 78° | 88° | — | — |
| 1982 | 85° | 63° | 74° | — | — |
| 1981 | 79° | 49° | 64° | — | — |
| 1980 | 86° | 66° | 76° | — | — |
| 1979 | 80° | 65° | 72° | — | — |
| 1978 | 87° | 65° | 76° | 0.15" | — |
| 1977coldest | 72° | 47° | 59° | — | — |
| 1976 | 88° | 54° | 71° | — | — |
| 1975 | 81° | 51° | 66° | — | — |
| 1974 | 89° | 59° | 74° | — | — |
| 1973 | 86° | 66° | 76° | 0.08" | — |
| 1972 | 91° | 68° | 80° | 0.79" | — |
| 1971 | 88° | 61° | 74° | 0.08" | — |
54 years of data from WHEATON 3 SE