Weather on June 18
Joliet, IL
55 Years of Data
Avg High
83°F
Avg Low
61°F
Warmest
2024
83°F avg
Coldest
1999
59°F avg
About This Date
June 18th in Joliet, IL typically brings warm summer weather, with average highs around 83°F and lows near 61°F. Over 53 years of records, the warmest June 18th was in 2024 (83°F average), while the coldest was 1999 (59°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 32% of June 18th dates historically, with the wettest June 18th recording 4.9" of rain. The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
Planning for June 18th in Joliet, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 69° | 76° | 0.58" | — |
| 2024warmest | 93° | 73° | 83° | — | — |
| 2023 | 82° | 51° | 67° | — | — |
| 2022 | 85° | 62° | 73° | — | — |
| 2021 | 87° | 55° | 71° | — | — |
| 2020 | 86° | 57° | 72° | — | — |
| 2019 | 71° | 55° | 63° | — | — |
| 2018 | 91° | 73° | 82° | — | — |
| 2017 | 87° | 64° | 76° | 0.25" | — |
| 2016 | 85° | 61° | 73° | — | — |
| 2015 | 71° | 57° | 64° | 0.13" | — |
| 2014 | 90° | 75° | 82° | — | — |
| 2013 | 87° | 58° | 72° | — | — |
| 2012 | 83° | 68° | 75° | — | — |
| 2011 | 87° | 64° | 76° | — | — |
| 2010 | 83° | 64° | 73° | 0.05" | — |
| 2009 | 78° | 61° | 69° | 0.08" | — |
| 2008 | 75° | 55° | 65° | — | — |
| 2007 | 91° | 70° | 80° | 0.03" | — |
| 2006 | 90° | 70° | 80° | — | — |
| 2005 | 72° | 55° | 63° | — | — |
| 2004 | 82° | 65° | 73° | — | — |
| 2003 | 84° | 56° | 70° | — | — |
| 2002 | 81° | 59° | 70° | — | — |
| 2001 | 88° | 59° | 73° | — | — |
| 2000 | 67° | 57° | 62° | 0.05" | — |
| 1999coldest | 68° | 50° | 59° | — | — |
| 1998 | 84° | 61° | 72° | — | — |
| 1997 | 75° | 55° | 65° | — | — |
| 1996 | 87° | 71° | 79° | 4.09" | — |
| 1995 | 89° | 65° | 77° | — | — |
| 1994 | 94° | 71° | 82° | — | — |
| 1993 | 84° | 65° | 74° | 4.9" | — |
| 1992 | 87° | 62° | 75° | 1.96" | — |
| 1991 | 88° | 64° | 76° | — | — |
| 1990 | 90° | 67° | 78° | 0.03" | — |
| 1988 | 85° | 59° | 72° | — | — |
| 1987 | 94° | 68° | 81° | — | — |
| 1986 | 72° | 53° | 62° | 0.05" | — |
| 1985 | 78° | 55° | 67° | — | — |
| 1984 | 94° | 67° | 80° | 0.05" | — |
| 1983 | 83° | 59° | 71° | — | — |
| 1982 | 78° | 48° | 63° | — | — |
| 1981 | 78° | 57° | 68° | — | — |
| 1980 | 71° | 49° | 60° | — | — |
| 1979 | 81° | 57° | 69° | 0.05" | — |
| 1978 | 89° | 64° | 77° | 0.64" | — |
| 1977 | 88° | 63° | 75° | 1.45" | — |
| 1976 | 87° | 65° | 76° | 1.22" | — |
| 1974 | 83° | — | — | — | — |
| 1973 | 84° | 59° | 72° | — | — |
| 1972 | 78° | 49° | 63° | — | — |
| 1971 | 93° | 63° | 78° | — | — |
53 years of data from JOLIET