Weather on July 9
Joliet, IL
55 Years of Data
Avg High
85°F
Avg Low
65°F
Warmest
1973
84°F avg
Coldest
2015
62°F avg
About This Date
July 9th in Joliet, IL typically brings warm summer weather, with average highs around 85°F and lows near 65°F. Over 54 years of records, the warmest July 9th was in 1973 (84°F average), while the coldest was 2015 (62°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 35% of July 9th dates historically, with the wettest July 9th recording 2.41" 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 July 9th in Joliet, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Cooling Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 69° | 79° | — | — |
| 2024 | 83° | 65° | 74° | 0.48" | — |
| 2023 | 74° | 59° | 66° | — | — |
| 2022 | 82° | 68° | 75° | 0.76" | — |
| 2021 | 70° | 61° | 65° | — | — |
| 2020 | 92° | 69° | 80° | 0.51" | — |
| 2019 | 85° | 63° | 74° | — | — |
| 2018 | 82° | 61° | 71° | — | — |
| 2017 | 80° | 58° | 69° | — | — |
| 2016 | 84° | 65° | 74° | — | — |
| 2015coldest | 68° | 55° | 62° | 0.38" | — |
| 2014 | 82° | 61° | 71° | 0.51" | — |
| 2013 | 87° | 71° | 79° | 0.43" | — |
| 2012 | 82° | 66° | 74° | 0.79" | — |
| 2011 | 87° | 63° | 75° | — | — |
| 2010 | 86° | 73° | 80° | — | — |
| 2009 | 70° | 60° | 65° | 0.2" | — |
| 2008 | 84° | 67° | 75° | 0.38" | — |
| 2007 | 90° | 71° | 80° | — | — |
| 2006 | 84° | 62° | 73° | 0.03" | — |
| 2005 | 86° | 57° | 72° | — | — |
| 2004 | 77° | 58° | 67° | — | — |
| 2003 | 80° | 66° | 73° | 0.81" | — |
| 2002 | 92° | 71° | 81° | 2.41" | — |
| 2001 | 90° | 70° | 80° | — | — |
| 2000 | 85° | 63° | 74° | — | — |
| 1999 | 85° | 64° | 74° | — | — |
| 1998 | 86° | 66° | 76° | — | — |
| 1997 | 86° | 57° | 72° | 0.76" | — |
| 1996 | 86° | 57° | 72° | — | — |
| 1995 | 83° | 59° | 71° | — | — |
| 1994 | 82° | 64° | 73° | — | — |
| 1993 | 87° | 70° | 78° | — | — |
| 1992 | 87° | 68° | 78° | — | — |
| 1991 | 76° | 63° | 69° | — | — |
| 1990 | 94° | 71° | 82° | — | — |
| 1989 | 90° | 70° | 80° | — | — |
| 1988 | 97° | 69° | 83° | — | — |
| 1987 | 86° | 69° | 78° | — | — |
| 1986 | 87° | 67° | 77° | 2.24" | — |
| 1985 | 90° | 67° | 78° | — | — |
| 1984 | 77° | 55° | 66° | — | — |
| 1983 | 84° | 57° | 71° | — | — |
| 1982 | 83° | 58° | 70° | — | — |
| 1981 | 92° | 75° | 83° | — | — |
| 1980 | 88° | 58° | 73° | 1.07" | — |
| 1979 | 79° | 63° | 71° | 0.2" | — |
| 1978 | 83° | 62° | 72° | 0.33" | — |
| 1977 | 84° | 63° | 73° | 0.76" | — |
| 1976 | 89° | 69° | 79° | — | — |
| 1974 | 97° | 72° | 84° | — | — |
| 1973warmest | 94° | 74° | 84° | — | — |
| 1972 | 84° | 65° | 74° | 0.94" | — |
| 1971 | 90° | 62° | 76° | — | — |
54 years of data from JOLIET