Weather on May 15
Chicago, IL
55 Years of Data
Avg High
68°F
Avg Low
51°F
Warmest
1998
79°F avg
Coldest
1997
45°F avg
About This Date
May 15th in Chicago, IL typically brings mild spring weather, with average highs around 68°F and lows near 51°F. Over 53 years of records, the warmest May 15th was in 1998 (79°F average), while the coldest was 1997 (45°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 28% of May 15th dates historically, with the wettest May 15th recording 1.96" 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 May 15th in Chicago, IL? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 53° | 72° | — | — |
| 2024 | 62° | 52° | 57° | — | — |
| 2023 | 68° | 53° | 61° | — | — |
| 2022 | 72° | 58° | 65° | — | — |
| 2021 | 61° | 54° | 57° | 0.33" | — |
| 2020 | 68° | 50° | 59° | — | — |
| 2019 | 76° | 52° | 64° | — | — |
| 2018 | 64° | 48° | 56° | — | — |
| 2017 | 69° | 48° | 59° | — | — |
| 2016 | 54° | 42° | 48° | — | — |
| 2015 | 76° | 55° | 65° | — | — |
| 2014 | 51° | 41° | 46° | — | — |
| 2013 | 78° | 56° | 67° | — | — |
| 2012 | 85° | 57° | 71° | — | — |
| 2011 | 49° | 44° | 46° | — | — |
| 2010 | 59° | 50° | 55° | — | — |
| 2009 | 62° | 54° | 58° | — | — |
| 2008 | 53° | 46° | 50° | — | — |
| 2007 | 82° | 54° | 68° | — | — |
| 2006 | 57° | 47° | 52° | — | — |
| 2005 | 54° | 44° | 49° | — | — |
| 2004 | 55° | 44° | 50° | 0.03" | — |
| 2003 | 55° | 47° | 51° | — | — |
| 2002 | 76° | 45° | 60° | — | — |
| 2001 | 91° | 62° | 77° | — | — |
| 2000 | 71° | 45° | 58° | — | — |
| 1999 | 74° | 55° | 64° | 0.03" | — |
| 1998warmest | 88° | 70° | 79° | — | — |
| 1997coldest | 51° | 40° | 45° | — | — |
| 1994 | 75° | 63° | 69° | 0.05" | — |
| 1993 | 81° | 58° | 69° | — | — |
| 1992 | 65° | 46° | 55° | — | — |
| 1991 | 86° | 64° | 75° | — | — |
| 1990 | 67° | 48° | 57° | 0.03" | — |
| 1989 | 63° | 46° | 54° | — | — |
| 1988 | 77° | 68° | 73° | 0.1" | — |
| 1987 | 86° | 51° | 69° | — | — |
| 1986 | 69° | 55° | 62° | 0.05" | — |
| 1985 | 89° | 61° | 75° | 1.96" | — |
| 1984 | 68° | 43° | 55° | — | — |
| 1983 | 60° | 44° | 52° | 0.2" | — |
| 1982 | 87° | 67° | 77° | 0.13" | — |
| 1981 | 62° | 43° | 52° | 0.91" | — |
| 1980 | 60° | 47° | 53° | 0.05" | — |
| 1979 | 64° | 47° | 55° | 0.13" | — |
| 1978 | 49° | 44° | 46° | 0.18" | — |
| 1977 | 83° | 58° | 70° | — | — |
| 1976 | 60° | 52° | 56° | — | — |
| 1975 | 57° | 47° | 52° | — | — |
| 1974 | 61° | 50° | 55° | — | — |
| 1973 | 65° | 46° | 55° | — | — |
| 1972 | 59° | 49° | 54° | — | — |
| 1971 | 83° | 57° | 70° | 0.51" | — |
53 years of data from CHICAGO GRANT PARK