Weather on May 31
Joliet, IL
55 Years of Data
About This Date
May 31st in Joliet, IL typically brings pleasant spring weather, with average highs around 79°F and lows near 56°F. Over 54 years of records, the warmest May 31st was in 1991 (79°F average), while the coldest was 1983 (51°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 30% of May 31st dates historically, with the wettest May 31st recording 2.2" 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 31st in Joliet, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 78° | 57° | 68° | — | — |
| 2025 | 74° | 54° | 64° | — | — |
| 2024 | 73° | 48° | 61° | — | — |
| 2023 | 89° | 58° | 73° | — | — |
| 2022 | — | 66° | — | — | — |
| 2021 | 70° | 40° | 55° | — | — |
| 2020 | 72° | 50° | 61° | — | — |
| 2019 | 79° | 60° | 69° | — | — |
| 2018 | 86° | 67° | 76° | 0.75" | — |
| 2017 | 76° | 50° | 63° | 0.02" | — |
| 2016 | 87° | 63° | 75° | — | — |
| 2015 | 68° | 44° | 56° | 0.6" | — |
| 2014 | 82° | 58° | 70° | — | — |
| 2013 | 83° | 63° | 73° | 0.55" | — |
| 2012 | 70° | 53° | 61° | — | — |
| 2011 | 88° | 63° | 75° | — | — |
| 2010 | 90° | 66° | 78° | — | — |
| 2009 | 80° | 48° | 64° | — | — |
| 2008 | 73° | 64° | 69° | 0.9" | — |
| 2007 | 87° | 67° | 77° | — | — |
| 2006 | 93° | 43° | 68° | 0.06" | — |
| 2005 | 75° | 48° | 62° | — | — |
| 2004 | 77° | 64° | 71° | 2.2" | — |
| 2003 | 74° | 51° | 62° | — | — |
| 2002 | 81° | 63° | 72° | — | — |
| 2001 | 63° | 48° | 55° | — | — |
| 2000 | 84° | 60° | 72° | 0.7" | — |
| 1999 | 83° | 60° | 71° | — | — |
| 1998 | 89° | 66° | 78° | — | — |
| 1997 | 72° | 55° | 63° | — | — |
| 1996 | 71° | 42° | 57° | — | — |
| 1995 | 81° | 52° | 66° | — | — |
| 1994 | 89° | 64° | 77° | — | — |
| 1993 | 71° | 51° | 61° | 1.05" | — |
| 1992 | 68° | 47° | 57° | 0.01" | — |
| 1991warmest | 89° | 69° | 79° | 0.01" | — |
| 1990 | 67° | 45° | 56° | — | — |
| 1989 | 87° | 69° | 78° | 0.09" | — |
| 1988 | 92° | 62° | 77° | — | — |
| 1987 | 86° | 66° | 76° | 0.22" | — |
| 1986 | 85° | 59° | 72° | — | — |
| 1985 | 81° | 50° | 65° | — | — |
| 1984 | 70° | 42° | 56° | — | — |
| 1983coldest | 60° | 43° | 51° | 0.07" | — |
| 1981 | 69° | 45° | 57° | — | — |
| 1980 | 84° | 61° | 72° | 1.23" | — |
| 1979 | 82° | 60° | 71° | — | — |
| 1978 | 80° | 57° | 69° | — | — |
| 1977 | 92° | 60° | 76° | — | — |
| 1976 | 74° | 58° | 66° | 0.37" | — |
| 1974 | 75° | 60° | 68° | — | — |
| 1973 | 78° | 50° | 64° | — | — |
| 1972 | 65° | 43° | 54° | — | — |
| 1971 | 89° | 50° | 70° | — | — |
Joliet, IL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Joliet, IL Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Joliet, IL Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Joliet, IL
Most pleasant months in Joliet, IL: May, June, August, September.
What to expect on May 31st
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
May 31st outlook →