Weather on May 31
Naperville, IL
55 Years of Data
About This Date
May 31st in Naperville, IL typically brings warm spring weather, with average highs around 80°F and lows near 54°F — a 26°F daily swing. Over 55 years of records, the warmest May 31st was in 1998 (81°F average), while the coldest was 1972 (52°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 29% of May 31st dates historically, with the wettest May 31st recording 4.72" 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 Naperville, IL? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 50° | 62° | — | — |
| 2024 | 71° | 44° | 58° | — | — |
| 2023 | 89° | 59° | 74° | — | — |
| 2022 | 89° | — | — | — | — |
| 2021 | 71° | 38° | 54° | — | — |
| 2020 | — | 46° | — | — | — |
| 2019 | 79° | 55° | 67° | 0.05" | — |
| 2018 | 86° | 66° | 76° | 1.65" | — |
| 2017 | 76° | 46° | 61° | — | — |
| 2016 | 87° | 60° | 74° | — | — |
| 2015 | 69° | 43° | 56° | 0.74" | — |
| 2014 | 81° | 53° | 67° | 0.03" | — |
| 2013 | 83° | 63° | 73° | 2.46" | — |
| 2012 | 69° | 48° | 59° | 0.08" | — |
| 2011 | 90° | 66° | 78° | — | — |
| 2010 | 91° | 64° | 78° | — | — |
| 2009 | 80° | 49° | 64° | — | — |
| 2008 | 76° | 60° | 68° | — | — |
| 2007 | 88° | 68° | 78° | — | — |
| 2006 | 87° | 66° | 77° | 3.96" | — |
| 2005 | 75° | 42° | 59° | — | — |
| 2004 | 65° | 55° | 60° | 4.72" | — |
| 2003 | 78° | 51° | 65° | 1.85" | — |
| 2002 | 88° | 72° | 80° | — | — |
| 2001 | 62° | 42° | 52° | — | — |
| 2000 | 84° | 65° | 74° | 0.43" | — |
| 1999 | 87° | 65° | 76° | — | — |
| 1998warmest | 89° | 74° | 81° | — | — |
| 1997 | 73° | 50° | 62° | — | — |
| 1996 | 76° | 39° | 57° | — | — |
| 1995 | 85° | 49° | 67° | — | — |
| 1994 | 91° | 68° | 80° | — | — |
| 1993 | 66° | 40° | 53° | 1.91" | — |
| 1992 | 81° | 42° | 61° | — | — |
| 1991 | 90° | 63° | 76° | 1.32" | — |
| 1990 | 77° | 38° | 57° | — | — |
| 1989 | 84° | 74° | 79° | — | — |
| 1988 | 94° | 55° | 74° | — | — |
| 1987 | 89° | 64° | 77° | — | — |
| 1986 | 89° | 62° | 76° | — | — |
| 1985 | 80° | 67° | 73° | — | — |
| 1984 | 75° | 43° | 59° | — | — |
| 1983 | 60° | 47° | 53° | 0.58" | — |
| 1982 | 76° | 60° | 68° | — | — |
| 1981 | 76° | 40° | 58° | — | — |
| 1980 | 83° | 61° | 72° | — | — |
| 1979 | 83° | 62° | 72° | — | — |
| 1978 | 91° | 53° | 72° | — | — |
| 1977 | 83° | 58° | 70° | 1.98" | — |
| 1976 | 70° | 56° | 63° | 0.15" | — |
| 1975 | 69° | 53° | 61° | 1.68" | — |
| 1974 | — | 57° | — | — | — |
| 1973 | 78° | 40° | 59° | — | — |
| 1972coldest | 66° | 38° | 52° | — | — |
| 1971 | 79° | 46° | 62° | — | — |
Naperville, IL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Naperville, IL Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Naperville, 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 Naperville, IL
Naperville, IL has no months that meet our "pleasant" threshold — every season has tradeoffs.