Weather on July 30
Joliet, IL
55 Years of Data
Avg High
84°F
Avg Low
63°F
Warmest
1999
86°F avg
Coldest
1971
62°F avg
About This Date
July 30th in Joliet, IL typically brings warm summer weather, with average highs around 84°F and lows near 63°F. Over 54 years of records, the warmest July 30th was in 1999 (86°F average), while the coldest was 1971 (62°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 30% of July 30th dates historically, with the wettest July 30th recording 3.15" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for July 30th in Joliet, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 74° | 80° | — | — |
| 2024 | 84° | 69° | 77° | 0.76" | — |
| 2023 | 84° | 63° | 73° | — | — |
| 2022 | 79° | 59° | 69° | — | — |
| 2021 | 88° | 65° | 76° | — | — |
| 2020 | 87° | 68° | 78° | — | — |
| 2019 | 84° | 65° | 74° | 0.33" | — |
| 2018 | 77° | 59° | 68° | — | — |
| 2017 | 78° | 61° | 69° | — | — |
| 2016 | 82° | 67° | 74° | 2.79" | — |
| 2015 | 87° | 64° | 76° | — | — |
| 2014 | 79° | 57° | 68° | — | — |
| 2013 | 79° | 52° | 65° | — | — |
| 2012 | 83° | 64° | 73° | — | — |
| 2011 | 86° | 68° | 77° | — | — |
| 2010 | 82° | 67° | 74° | — | — |
| 2009 | 79° | 62° | 70° | — | — |
| 2008 | 87° | 68° | 78° | 0.46" | — |
| 2007 | 84° | 62° | 73° | — | — |
| 2006 | 92° | 70° | 81° | — | — |
| 2005 | 84° | 61° | 72° | — | — |
| 2004 | 86° | 63° | 74° | 0.43" | — |
| 2003 | 81° | 57° | 69° | — | — |
| 2002 | 85° | 68° | 76° | — | — |
| 2001 | 89° | 63° | 76° | — | — |
| 2000 | 76° | 68° | 72° | 3.12" | — |
| 1999warmest | 97° | 75° | 86° | — | — |
| 1998 | 87° | 62° | 75° | — | — |
| 1997 | 76° | 62° | 69° | — | — |
| 1996 | 79° | 62° | 70° | 3.15" | — |
| 1995 | 92° | 70° | 81° | — | — |
| 1994 | 80° | 56° | 68° | — | — |
| 1993 | 80° | 62° | 71° | — | — |
| 1992 | 79° | 62° | 70° | 0.03" | — |
| 1991 | 83° | 58° | 70° | — | — |
| 1990 | 86° | 68° | 77° | 0.84" | — |
| 1989 | 80° | 63° | 71° | 1.57" | — |
| 1988 | 92° | 69° | 80° | 0.79" | — |
| 1987 | 92° | 70° | 81° | — | — |
| 1986 | 89° | 60° | 75° | — | — |
| 1985 | 88° | 64° | 76° | — | — |
| 1984 | 82° | 55° | 69° | — | — |
| 1983 | 96° | 69° | 83° | 1.27" | — |
| 1982 | 80° | 57° | 69° | — | — |
| 1981 | 76° | 53° | 64° | — | — |
| 1980 | 87° | 58° | 72° | — | — |
| 1979 | 87° | 67° | 77° | 1.6" | — |
| 1978 | 81° | 59° | 70° | 0.18" | — |
| 1977 | 87° | 62° | 75° | 0.28" | — |
| 1976 | 79° | 62° | 70° | — | — |
| 1974 | 81° | 58° | 69° | — | — |
| 1973 | 83° | 66° | 74° | 0.2" | — |
| 1972 | 83° | 55° | 69° | — | — |
| 1971coldest | 71° | 53° | 62° | — | — |
54 years of data from JOLIET