Weather on May 31
Chicago, IL
55 Years of Data
Avg High
74°F
Avg Low
58°F
Warmest
1989
81°F avg
Coldest
2015
46°F avg
About This Date
May 31st in Chicago, IL typically brings pleasant spring weather, with average highs around 74°F and lows near 58°F. Over 53 years of records, the warmest May 31st was in 1989 (81°F average), while the coldest was 2015 (46°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 17% of May 31st dates historically, with the wettest May 31st recording 2.64" of rain. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for May 31st in Chicago, IL? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 56° | 50° | 53° | — | — |
| 2024 | 71° | 54° | 62° | — | — |
| 2023 | 91° | 70° | 80° | — | — |
| 2022 | 87° | 74° | 80° | — | — |
| 2021 | 71° | 55° | 63° | — | — |
| 2020 | 58° | 52° | 55° | — | — |
| 2019 | 81° | 62° | 71° | — | — |
| 2018 | 88° | 67° | 77° | — | — |
| 2017 | 72° | 58° | 65° | — | — |
| 2016 | 74° | 59° | 66° | — | — |
| 2015coldest | 50° | 43° | 46° | — | — |
| 2014 | 72° | 56° | 64° | — | — |
| 2013 | 77° | 63° | 70° | — | — |
| 2012 | 56° | 50° | 53° | — | — |
| 2011 | 88° | 69° | 78° | — | — |
| 2010 | 84° | 64° | 74° | — | — |
| 2009 | 66° | 52° | 59° | — | — |
| 2008 | 81° | 55° | 68° | — | — |
| 2007 | 79° | 62° | 70° | — | — |
| 2006 | 75° | 63° | 69° | — | — |
| 2005 | 73° | 51° | 62° | — | — |
| 2004 | 67° | 57° | 62° | 1.47" | — |
| 2003 | 58° | 44° | 51° | 0.03" | — |
| 2002 | 86° | 68° | 77° | — | — |
| 2001 | 62° | 51° | 57° | 2.64" | — |
| 2000 | 78° | 59° | 69° | 2.16" | — |
| 1999 | 84° | 67° | 75° | 1.19" | — |
| 1998 | 83° | 60° | 71° | — | — |
| 1997 | 67° | 54° | 60° | — | — |
| 1994 | 91° | 66° | 79° | — | — |
| 1993 | 69° | 48° | 59° | 1.14" | — |
| 1992 | 70° | 50° | 60° | — | — |
| 1991 | 91° | 70° | 80° | — | — |
| 1990 | 70° | 44° | 57° | — | — |
| 1989warmest | 88° | 75° | 81° | — | — |
| 1988 | 91° | 67° | 79° | — | — |
| 1987 | 84° | 66° | 75° | 0.25" | — |
| 1986 | 86° | 65° | 75° | — | — |
| 1985 | 80° | 70° | 75° | — | — |
| 1984 | 73° | 53° | 63° | — | — |
| 1983 | 59° | 48° | 54° | 0.58" | — |
| 1982 | 75° | 59° | 67° | — | — |
| 1981 | 66° | 47° | 56° | — | — |
| 1980 | 84° | 64° | 74° | — | — |
| 1979 | 75° | 57° | 66° | — | — |
| 1978 | 79° | 63° | 71° | — | — |
| 1977 | 83° | 58° | 70° | 0.08" | — |
| 1976 | 63° | 52° | 57° | — | — |
| 1975 | 61° | 56° | 58° | — | — |
| 1974 | 67° | 52° | 59° | — | — |
| 1973 | 78° | 50° | 64° | — | — |
| 1972 | 57° | 47° | 52° | — | — |
| 1971 | 61° | 49° | 55° | — | — |
53 years of data from CHICAGO GRANT PARK