Weather on April 15
Joliet, IL
55 Years of Data
Avg High
61°F
Avg Low
40°F
Warmest
1976
69°F avg
Coldest
2019
32°F avg
About This Date
April 15th in Joliet, IL typically brings mild spring weather, with average highs around 61°F and lows near 40°F. Over 54 years of records, the warmest April 15th was in 1976 (69°F average), while the coldest was 2019 (32°F) — a 37°F range across recorded history. Precipitation has occurred on 39% of recorded April 15th dates, with snow falling 2% of the time. The last decade has been 5.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 5.7°F cooler on this date compared to 20-30 years ago.
Planning for April 15th in Joliet, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 59° | 43° | 51° | — | — |
| 2024 | 82° | 39° | 61° | — | — |
| 2023 | 81° | 52° | 66° | — | — |
| 2022 | 53° | 35° | 44° | — | — |
| 2021 | 50° | 34° | 42° | — | — |
| 2020 | 41° | 27° | 34° | — | — |
| 2019coldest | 35° | 29° | 32° | 1.27" | — |
| 2018 | 42° | 35° | 39° | 1.88" | — |
| 2017 | 74° | 47° | 60° | 0.05" | — |
| 2016 | 65° | 38° | 51° | — | — |
| 2015 | 68° | 43° | 55° | — | — |
| 2014 | 42° | 26° | 34° | 0.23" | 0.5" |
| 2013 | 66° | 45° | 55° | 0.97" | — |
| 2012 | 67° | 54° | 60° | 0.03" | — |
| 2011 | 53° | 44° | 49° | — | — |
| 2010 | 83° | 50° | 66° | — | — |
| 2009 | 45° | 38° | 41° | 0.08" | — |
| 2008 | 53° | 28° | 41° | — | — |
| 2007 | 48° | 31° | 39° | — | — |
| 2006 | 84° | 52° | 68° | 0.76" | — |
| 2005 | 65° | 43° | 54° | — | — |
| 2004 | 69° | 34° | 51° | — | — |
| 2003 | 84° | 45° | 64° | — | — |
| 2002 | 77° | 49° | 63° | — | — |
| 2001 | 66° | 40° | 53° | 1.47" | — |
| 2000 | 75° | 43° | 59° | — | — |
| 1999 | 64° | 40° | 52° | — | — |
| 1998 | 68° | 50° | 59° | — | — |
| 1997 | 53° | 28° | 41° | — | — |
| 1996 | 48° | 34° | 41° | 1.91" | — |
| 1995 | 56° | 35° | 45° | — | — |
| 1994 | 73° | 43° | 58° | 0.25" | — |
| 1993 | 54° | 45° | 49° | 2.24" | — |
| 1992 | 51° | 38° | 44° | — | — |
| 1991 | 68° | 47° | 57° | 3.78" | — |
| 1990 | 57° | 38° | 47° | — | — |
| 1989 | 62° | 35° | 49° | 0.05" | — |
| 1988 | 55° | 34° | 44° | — | — |
| 1987 | 59° | 44° | 52° | 2.11" | — |
| 1986 | 56° | 29° | 42° | 0.99" | — |
| 1985 | 58° | 50° | 54° | 0.18" | — |
| 1984 | 56° | 44° | 50° | 0.18" | — |
| 1983 | 50° | 31° | 40° | 0.05" | — |
| 1982 | 60° | 39° | 50° | — | — |
| 1981 | 59° | 35° | 47° | — | — |
| 1980 | 38° | 30° | 34° | 0.71" | — |
| 1979 | 58° | 38° | 48° | — | — |
| 1978 | 55° | 36° | 45° | — | — |
| 1977 | 72° | 51° | 61° | — | — |
| 1976warmest | 79° | 59° | 69° | — | — |
| 1974 | 56° | 37° | 46° | — | — |
| 1973 | 70° | 48° | 59° | 0.23" | — |
| 1972 | 58° | 44° | 51° | — | — |
| 1971 | 71° | 33° | 52° | — | — |
54 years of data from JOLIET