Weather on April 18
Joliet, IL
55 Years of Data
Avg High
64°F
Avg Low
41°F
Warmest
2002
75°F avg
Coldest
1983
32°F avg
About This Date
April 18th in Joliet, IL typically brings mild spring weather, with average highs around 64°F and lows near 41°F. Over 54 years of records, the warmest April 18th was in 2002 (75°F average), while the coldest was 1983 (32°F) — a 43°F range across recorded history. Rain or other precipitation has occurred on about 28% of April 18th dates historically, with the wettest April 18th recording 7.37" of rain. The last decade has been 3.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.5°F cooler on this date compared to 20-30 years ago.
Planning for April 18th in Joliet, IL? Great weather for outdoor activities.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 57° | 67° | 0.15" | — |
| 2024 | 69° | 45° | 57° | — | — |
| 2023 | 40° | 30° | 35° | — | — |
| 2022 | 44° | 29° | 36° | 0.46" | — |
| 2021 | 62° | 38° | 50° | — | — |
| 2020 | 39° | 32° | 36° | 0.43" | — |
| 2019 | 77° | 50° | 64° | 0.15" | — |
| 2018 | 43° | 29° | 36° | — | — |
| 2017 | 72° | 44° | 58° | — | — |
| 2016 | 81° | 51° | 66° | — | — |
| 2015 | 77° | 46° | 62° | — | — |
| 2014 | 61° | 38° | 49° | — | — |
| 2013 | 59° | 44° | 52° | 7.37" | — |
| 2012 | 60° | 41° | 51° | — | — |
| 2011 | 50° | 34° | 42° | 0.64" | — |
| 2010 | 61° | 38° | 49° | — | — |
| 2009 | 71° | 40° | 55° | — | — |
| 2008 | 74° | 52° | 63° | — | — |
| 2007 | 75° | 39° | 57° | — | — |
| 2006 | 54° | 46° | 50° | — | — |
| 2005 | 77° | 50° | 64° | — | — |
| 2004 | 84° | 57° | 71° | — | — |
| 2003 | 74° | 42° | 58° | 0.03" | — |
| 2002warmest | 86° | 65° | 75° | — | — |
| 2001 | 48° | 30° | 39° | — | — |
| 2000 | 66° | 41° | 54° | 0.03" | — |
| 1999 | 50° | 36° | 43° | — | — |
| 1998 | 57° | 33° | 45° | — | — |
| 1997 | 51° | 30° | 41° | 0.03" | — |
| 1996 | 67° | 34° | 50° | — | — |
| 1995 | 67° | 49° | 58° | 0.89" | — |
| 1994 | 70° | 39° | 54° | 0.03" | — |
| 1993 | 58° | 31° | 44° | — | — |
| 1992 | 48° | 40° | 44° | 0.13" | — |
| 1991 | 64° | 41° | 53° | — | — |
| 1990 | 48° | 30° | 39° | — | — |
| 1989 | 62° | 38° | 50° | 0.28" | — |
| 1988 | 75° | 37° | 56° | — | — |
| 1987 | 72° | 45° | 58° | — | — |
| 1986 | 63° | 38° | 50° | — | — |
| 1985 | 77° | 43° | 60° | — | — |
| 1984 | 47° | 35° | 41° | 0.1" | — |
| 1983coldest | 40° | 25° | 32° | — | — |
| 1982 | 57° | 36° | 46° | — | — |
| 1981 | 82° | 48° | 65° | — | — |
| 1980 | 59° | 34° | 46° | — | — |
| 1979 | 63° | 36° | 49° | — | — |
| 1978 | 59° | 39° | 49° | 2.64" | — |
| 1977 | 87° | 58° | 72° | — | — |
| 1976 | 84° | 61° | 72° | — | — |
| 1974 | 67° | 42° | 54° | — | — |
| 1973 | 68° | 51° | 60° | — | — |
| 1972 | 79° | 51° | 65° | — | — |
| 1971 | 67° | 42° | 54° | — | — |
54 years of data from JOLIET