Weather on June 30
Naperville, IL
55 Years of Data
Avg High
84°F
Avg Low
61°F
Warmest
2018
84°F avg
Coldest
2007
62°F avg
About This Date
June 30th in Naperville, IL typically brings warm summer weather, with average highs around 84°F and lows near 61°F. Over 55 years of records, the warmest June 30th was in 2018 (84°F average), while the coldest was 2007 (62°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 36% of June 30th dates historically, with the wettest June 30th recording 3.18" of rain. The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
Planning for June 30th in Naperville, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 70° | 81° | — | — |
| 2024 | 86° | 59° | 73° | — | — |
| 2023 | 87° | 67° | 77° | — | — |
| 2022 | 90° | 67° | 78° | — | — |
| 2021 | 86° | 71° | 79° | 0.51" | — |
| 2020 | 91° | 67° | 79° | 1.73" | — |
| 2019 | 88° | 66° | 77° | — | — |
| 2018warmest | 94° | 74° | 84° | — | — |
| 2017 | 82° | 64° | 73° | 0.3" | — |
| 2016 | 80° | 53° | 67° | — | — |
| 2015 | 76° | 60° | 68° | 3.18" | — |
| 2014 | 85° | 68° | 76° | 0.79" | — |
| 2013 | 72° | 62° | 67° | — | — |
| 2012 | 88° | 69° | 78° | 0.99" | — |
| 2011 | 83° | 55° | 69° | — | — |
| 2010 | 75° | 51° | 63° | — | — |
| 2009 | 78° | 58° | 68° | — | — |
| 2008 | 75° | 58° | 66° | 0.1" | — |
| 2007coldest | 71° | 53° | 62° | — | — |
| 2006 | 83° | 53° | 68° | — | — |
| 2005 | 89° | 70° | 79° | 0.74" | — |
| 2004 | 82° | 56° | 69° | — | — |
| 2003 | 86° | 55° | 71° | — | — |
| 2002 | 95° | 58° | 76° | — | — |
| 2001 | 90° | 65° | 77° | — | — |
| 2000 | 83° | 52° | 67° | — | — |
| 1999 | 82° | 54° | 68° | — | — |
| 1998 | 89° | 63° | 76° | 0.28" | — |
| 1997 | 92° | 68° | 80° | — | — |
| 1996 | 93° | 63° | 78° | — | — |
| 1995 | 85° | 67° | 76° | — | — |
| 1994 | 83° | 57° | 70° | 0.13" | — |
| 1993 | 81° | 60° | 70° | 2.54" | — |
| 1992 | 90° | 57° | 73° | — | — |
| 1991 | 94° | 73° | 83° | — | — |
| 1990 | 96° | 64° | 80° | — | — |
| 1989 | 85° | 52° | 68° | — | — |
| 1988 | 75° | 50° | 63° | 0.13" | — |
| 1987 | 81° | 64° | 72° | 0.23" | — |
| 1986 | 80° | 59° | 70° | 0.81" | — |
| 1985 | 83° | 57° | 70° | — | — |
| 1984 | 74° | 53° | 63° | — | — |
| 1983 | 86° | 67° | 76° | 1.47" | — |
| 1982 | 73° | 55° | 64° | 0.08" | — |
| 1981 | 91° | 65° | 78° | 0.23" | — |
| 1980 | 81° | 54° | 67° | — | — |
| 1979 | 82° | 56° | 69° | — | — |
| 1978 | 89° | 67° | 78° | 0.66" | — |
| 1977 | 77° | 63° | 70° | — | — |
| 1976 | 73° | 58° | 65° | 1.35" | — |
| 1975 | 89° | 62° | 76° | — | — |
| 1974 | 85° | 68° | 76° | — | — |
| 1973 | 78° | 52° | 65° | — | — |
| 1972 | 88° | 55° | 71° | — | — |
| 1971 | 94° | 72° | 83° | 0.08" | — |
55 years of data from WHEATON 3 SE