Weather on August 1
Joliet, IL
55 Years of Data
Avg High
84°F
Avg Low
63°F
Warmest
2006
86°F avg
Coldest
1990
63°F avg
About This Date
August 1st in Joliet, IL typically brings warm summer weather, with average highs around 84°F and lows near 63°F. Over 53 years of records, the warmest August 1st was in 2006 (86°F average), while the coldest was 1990 (63°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 15% of August 1st dates historically, with the wettest August 1st recording 1.83" of rain. The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
Planning for August 1st in Joliet, IL? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 61° | 69° | — | — |
| 2024 | 90° | 70° | 80° | — | — |
| 2023 | 82° | 61° | 71° | — | — |
| 2022 | 87° | 63° | 75° | — | — |
| 2021 | 75° | 65° | 70° | — | — |
| 2020 | 82° | 65° | 73° | — | — |
| 2019 | 77° | 57° | 67° | — | — |
| 2018 | 77° | 60° | 69° | — | — |
| 2017 | 83° | 63° | 73° | — | — |
| 2016 | 84° | 64° | 74° | — | — |
| 2015 | 86° | 60° | 73° | — | — |
| 2014 | 81° | 59° | 70° | — | — |
| 2013 | 75° | 60° | 68° | 0.05" | — |
| 2012 | 87° | 66° | 77° | — | — |
| 2011 | 90° | 70° | 80° | — | — |
| 2010 | 77° | 64° | 71° | 0.38" | — |
| 2009 | 80° | 58° | 69° | — | — |
| 2008 | 85° | 70° | 77° | 0.03" | — |
| 2007 | 89° | 65° | 77° | — | — |
| 2006warmest | 95° | 77° | 86° | — | — |
| 2005 | 86° | 67° | 76° | — | — |
| 2004 | 87° | 63° | 75° | — | — |
| 2003 | 82° | 64° | 73° | 0.79" | — |
| 2002 | 92° | 73° | 82° | — | — |
| 2001 | 94° | 63° | 78° | — | — |
| 2000 | 73° | 65° | 69° | — | — |
| 1999 | 89° | 69° | 79° | 0.76" | — |
| 1998 | 84° | 65° | 74° | — | — |
| 1997 | 83° | 58° | 70° | — | — |
| 1996 | 76° | 57° | 66° | — | — |
| 1995 | 92° | 70° | 81° | — | — |
| 1994 | 84° | 61° | 72° | — | — |
| 1993 | 82° | 63° | 72° | — | — |
| 1992 | 76° | 58° | 67° | 0.03" | — |
| 1991 | 96° | 68° | 82° | — | — |
| 1990coldest | 74° | 53° | 63° | — | — |
| 1989 | 73° | 66° | 70° | — | — |
| 1988 | 96° | 69° | 83° | — | — |
| 1986 | 92° | 57° | 74° | — | — |
| 1985 | 74° | 60° | 67° | — | — |
| 1984 | 86° | 58° | 72° | — | — |
| 1983 | 91° | 62° | 77° | — | — |
| 1982 | 83° | 60° | 71° | — | — |
| 1981 | 81° | 59° | 70° | — | — |
| 1980 | 89° | 64° | 77° | — | — |
| 1979 | 87° | 65° | 76° | — | — |
| 1978 | 80° | 55° | 68° | 1.83" | — |
| 1977 | 85° | 54° | 69° | — | — |
| 1976 | 77° | 55° | 66° | — | — |
| 1974 | 83° | 59° | 71° | 0.99" | — |
| 1973 | 78° | 59° | 69° | — | — |
| 1972 | 83° | 69° | 76° | — | — |
| 1971 | 83° | 55° | 69° | — | — |
53 years of data from JOLIET