Weather on August 26
Joliet, IL
55 Years of Data
Avg High
83°F
Avg Low
63°F
Warmest
1973
83°F avg
Coldest
2017
59°F avg
About This Date
August 26th in Joliet, IL typically brings warm summer weather, with average highs around 83°F and lows near 63°F. Over 53 years of records, the warmest August 26th was in 1973 (83°F average), while the coldest was 2017 (59°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 30% of August 26th dates historically, with the wettest August 26th recording 6.6" of rain. The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
Planning for August 26th in Joliet, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 49° | 62° | — | — |
| 2024 | 90° | 70° | 80° | — | — |
| 2023 | 84° | 66° | 75° | — | — |
| 2022 | 79° | 64° | 71° | 0.33" | — |
| 2021 | 92° | — | — | 2.92" | — |
| 2020 | 94° | 71° | 82° | — | — |
| 2019 | 76° | 59° | 67° | — | — |
| 2018 | 85° | 66° | 75° | — | — |
| 2017coldest | 72° | 47° | 59° | — | — |
| 2016 | 83° | 66° | 74° | — | — |
| 2015 | 70° | 55° | 62° | — | — |
| 2014 | 80° | 69° | 75° | 2.79" | — |
| 2013 | 86° | 61° | 73° | — | — |
| 2012 | 91° | 65° | 78° | — | — |
| 2011 | 81° | 60° | 70° | — | — |
| 2010 | 79° | 59° | 69° | — | — |
| 2009 | 80° | 59° | 70° | — | — |
| 2008 | 75° | 59° | 67° | — | — |
| 2007 | 80° | 60° | 70° | 0.13" | — |
| 2006 | 82° | 65° | 73° | — | — |
| 2005 | 78° | 64° | 71° | — | — |
| 2004 | 75° | 67° | 71° | 2.69" | — |
| 2003 | 91° | 70° | 80° | 0.23" | — |
| 2002 | 85° | 70° | 77° | — | — |
| 2001 | 82° | 70° | 76° | 0.51" | — |
| 2000 | 84° | 61° | 72° | — | — |
| 1999 | 75° | 62° | 69° | 0.18" | — |
| 1998 | 87° | 64° | 76° | — | — |
| 1997 | 75° | 61° | 68° | — | — |
| 1996 | 83° | 60° | 71° | — | — |
| 1995 | 86° | 67° | 76° | — | — |
| 1994 | 87° | 67° | 77° | — | — |
| 1993 | 87° | 70° | 78° | 0.03" | — |
| 1992 | 89° | 69° | 79° | 1.45" | — |
| 1991 | 95° | 69° | 82° | — | — |
| 1990 | 83° | 66° | 74° | — | — |
| 1989 | 80° | 63° | 71° | — | — |
| 1988 | 83° | 54° | 68° | — | — |
| 1986 | 86° | 56° | 71° | 0.89" | — |
| 1985 | 70° | 53° | 61° | 0.33" | — |
| 1984 | 84° | 56° | 70° | — | — |
| 1983 | 86° | 68° | 77° | 0.1" | — |
| 1982 | 78° | 52° | 65° | — | — |
| 1981 | 81° | 66° | 73° | 1.09" | — |
| 1980 | 85° | 61° | 73° | — | — |
| 1979 | 81° | 61° | 71° | — | — |
| 1978 | 82° | 63° | 72° | — | — |
| 1977 | 78° | 55° | 67° | — | — |
| 1976 | 83° | 67° | 75° | 0.38" | — |
| 1974 | 94° | 66° | 80° | — | — |
| 1973warmest | 95° | 71° | 83° | — | — |
| 1972 | 81° | 66° | 73° | 6.6" | — |
| 1971 | 87° | 57° | 72° | — | — |
53 years of data from JOLIET