Weather on August 12
Joliet, IL
55 Years of Data
Avg High
81°F
Avg Low
62°F
Warmest
1988
83°F avg
Coldest
2004
56°F avg
About This Date
August 12th in Joliet, IL typically brings warm summer weather, with average highs around 81°F and lows near 62°F. Over 53 years of records, the warmest August 12th was in 1988 (83°F average), while the coldest was 2004 (56°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 26% of August 12th dates historically, with the wettest August 12th recording 4.11" of rain. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for August 12th in Joliet, IL? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 72° | 80° | 0.05" | — |
| 2024 | 77° | 54° | 65° | — | — |
| 2023 | 84° | 66° | 75° | — | — |
| 2022 | 79° | 58° | 68° | — | — |
| 2021 | 87° | — | — | 1.27" | — |
| 2020 | 81° | 60° | 70° | — | — |
| 2019 | 83° | 62° | 72° | 0.38" | — |
| 2018 | 89° | 67° | 78° | 0.08" | — |
| 2017 | 77° | 59° | 68° | — | — |
| 2016 | 90° | 73° | 81° | — | — |
| 2015 | 84° | 60° | 72° | — | — |
| 2014 | 81° | 63° | 72° | 1.4" | — |
| 2013 | 82° | 60° | 71° | — | — |
| 2012 | 81° | 54° | 67° | — | — |
| 2011 | 79° | 59° | 69° | — | — |
| 2010 | 88° | 73° | 80° | — | — |
| 2009 | 82° | 61° | 71° | 0.33" | — |
| 2008 | 77° | 59° | 68° | — | — |
| 2007 | 86° | 67° | 76° | 0.25" | — |
| 2006 | 79° | 63° | 71° | — | — |
| 2005 | 76° | 64° | 70° | 3.28" | — |
| 2004coldest | 62° | 50° | 56° | — | — |
| 2003 | 79° | 63° | 71° | 0.3" | — |
| 2002 | 93° | 68° | 81° | — | — |
| 2001 | 82° | 63° | 72° | — | — |
| 2000 | 87° | 63° | 75° | — | — |
| 1999 | 85° | 66° | 75° | — | — |
| 1998 | 81° | 64° | 72° | — | — |
| 1997 | 68° | 64° | 66° | 2.34" | — |
| 1996 | 75° | 62° | 69° | — | — |
| 1995 | 92° | 72° | 82° | — | — |
| 1994 | 69° | 62° | 66° | — | — |
| 1993 | 86° | 67° | 76° | — | — |
| 1992 | 81° | 59° | 70° | — | — |
| 1991 | 85° | 56° | 70° | — | — |
| 1990 | 82° | 65° | 73° | — | — |
| 1989 | 82° | 61° | 71° | — | — |
| 1988warmest | 93° | 73° | 83° | — | — |
| 1986 | 79° | 55° | 67° | — | — |
| 1985 | 81° | 58° | 69° | — | — |
| 1984 | 85° | 64° | 74° | — | — |
| 1983 | 71° | 56° | 63° | — | — |
| 1982 | 76° | 50° | 63° | — | — |
| 1981 | 80° | 56° | 68° | — | — |
| 1980 | 77° | 59° | 68° | 1.27" | — |
| 1979 | 72° | 52° | 62° | — | — |
| 1978 | 80° | 65° | 72° | — | — |
| 1977 | 69° | 50° | 60° | 0.25" | — |
| 1976 | 85° | 66° | 75° | 0.13" | — |
| 1974 | 89° | 59° | 74° | — | — |
| 1973 | 87° | 67° | 77° | — | — |
| 1972 | 87° | 62° | 75° | 4.11" | — |
| 1971 | 82° | 55° | 69° | — | — |
53 years of data from JOLIET