Weather on August 19
Joliet, IL
55 Years of Data
Avg High
82°F
Avg Low
63°F
Warmest
1988
86°F avg
Coldest
1991
61°F avg
About This Date
August 19th in Joliet, IL typically brings warm summer weather, with average highs around 82°F and lows near 63°F. Over 53 years of records, the warmest August 19th was in 1988 (86°F average), while the coldest was 1991 (61°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 34% of August 19th dates historically, with the wettest August 19th recording 2.74" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 19th in Joliet, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 72° | 76° | — | — |
| 2024 | 78° | 62° | 70° | — | — |
| 2023 | 76° | 55° | 65° | — | — |
| 2022 | 81° | 59° | 70° | — | — |
| 2021 | 85° | 65° | 75° | 1.17" | — |
| 2020 | 82° | 58° | 70° | — | — |
| 2019 | 82° | 52° | 67° | 2.74" | — |
| 2018 | 82° | 65° | 73° | — | — |
| 2017 | 80° | 62° | 71° | — | — |
| 2016 | 82° | 68° | 75° | 0.23" | — |
| 2015 | 80° | 67° | 73° | 1.19" | — |
| 2014 | 81° | 65° | 73° | — | — |
| 2013 | 84° | 60° | 72° | — | — |
| 2012 | 77° | 55° | 66° | — | — |
| 2011 | 84° | 66° | 75° | — | — |
| 2010 | 83° | 65° | 74° | — | — |
| 2009 | 82° | 60° | 71° | — | — |
| 2008 | 83° | 61° | 72° | — | — |
| 2007 | 79° | 61° | 70° | 0.25" | — |
| 2006 | 82° | 62° | 72° | 1.52" | — |
| 2005 | 83° | 65° | 74° | — | — |
| 2004 | 82° | 61° | 71° | 1.4" | — |
| 2003 | 83° | 62° | 72° | — | — |
| 2002 | 81° | 56° | 68° | 0.66" | — |
| 2001 | 72° | 60° | 66° | 1.52" | — |
| 2000 | 77° | 59° | 68° | — | — |
| 1999 | 87° | 65° | 76° | 0.89" | — |
| 1998 | 81° | 65° | 73° | — | — |
| 1997 | 69° | 58° | 63° | — | — |
| 1996 | 77° | 67° | 72° | 0.58" | — |
| 1995 | 90° | 75° | 82° | — | — |
| 1994 | 79° | 63° | 71° | — | — |
| 1993 | 85° | 71° | 78° | — | — |
| 1992 | 77° | 55° | 66° | 0.03" | — |
| 1991coldest | 64° | 58° | 61° | 0.03" | — |
| 1990 | 90° | 72° | 81° | — | — |
| 1989 | 79° | 59° | 69° | — | — |
| 1988warmest | 98° | 73° | 86° | 0.51" | — |
| 1986 | 83° | 58° | 70° | — | — |
| 1985 | 77° | 57° | 67° | — | — |
| 1984 | 83° | 59° | 71° | — | — |
| 1983 | 90° | 72° | 81° | — | — |
| 1982 | 82° | 55° | 69° | — | — |
| 1981 | 75° | 57° | 66° | — | — |
| 1980 | 83° | 65° | 74° | — | — |
| 1979 | 81° | 66° | 73° | 0.13" | — |
| 1978 | 88° | 66° | 77° | 0.28" | — |
| 1977 | 74° | 50° | 62° | 0.03" | — |
| 1976 | 82° | 59° | 71° | — | — |
| 1974 | 93° | 63° | 78° | — | — |
| 1973 | 88° | 68° | 78° | — | — |
| 1972 | 93° | 70° | 81° | 0.56" | — |
| 1971 | 88° | 64° | 76° | — | — |
53 years of data from JOLIET