Weather on July 9
Joliet, IL
55 Years of Data
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.
| 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° | — | — |
Joliet, IL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Joliet, IL Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Joliet, IL Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Joliet, IL
Joliet, IL has no months that meet our "pleasant" threshold — every season has tradeoffs.