Weather on June 27
Naperville, IL
55 Years of Data
Avg High
86°F
Avg Low
61°F
Warmest
1998
83°F avg
Coldest
2017
60°F avg
About This Date
June 27th in Naperville, IL typically brings warm summer weather, with average highs around 86°F and lows near 61°F — a 25°F daily swing. Over 55 years of records, the warmest June 27th was in 1998 (83°F average), while the coldest was 2017 (60°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 38% of June 27th dates historically, with the wettest June 27th recording 2.92" of rain. The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
Planning for June 27th in Naperville, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 73° | 83° | 0.03" | — |
| 2024 | 86° | 57° | 72° | — | — |
| 2023 | 74° | 60° | 67° | 0.05" | — |
| 2022 | 80° | 53° | 67° | — | — |
| 2021 | 81° | 71° | 76° | 2.46" | — |
| 2020 | 86° | 68° | 77° | 2.92" | — |
| 2019 | 88° | 67° | 77° | 1.07" | — |
| 2018 | 84° | 65° | 74° | 1.45" | — |
| 2017coldest | 73° | 46° | 60° | — | — |
| 2016 | 89° | 63° | 76° | 0.13" | — |
| 2015 | 80° | 54° | 67° | 0.76" | — |
| 2014 | 82° | 60° | 71° | — | — |
| 2013 | 81° | 63° | 72° | 0.76" | — |
| 2012 | 84° | 51° | 68° | — | — |
| 2011 | 80° | 63° | 71° | — | — |
| 2010 | 87° | 70° | 78° | — | — |
| 2009 | 93° | 59° | 76° | — | — |
| 2008 | 86° | 64° | 75° | — | — |
| 2007 | 90° | 71° | 80° | 1.42" | — |
| 2006 | 80° | 56° | 68° | 0.69" | — |
| 2005 | 97° | 68° | 82° | 2.16" | — |
| 2004 | 80° | 50° | 65° | — | — |
| 2003 | 83° | 57° | 70° | 0.15" | — |
| 2002 | 89° | 69° | 79° | — | — |
| 2001 | 90° | 60° | 75° | — | — |
| 2000 | 79° | 57° | 68° | — | — |
| 1999 | 87° | 70° | 78° | 1.45" | — |
| 1998warmest | 96° | 69° | 83° | — | — |
| 1997 | 89° | 56° | 72° | — | — |
| 1996 | 90° | 60° | 75° | — | — |
| 1995 | 80° | 65° | 72° | 0.13" | — |
| 1994 | 83° | 57° | 70° | — | — |
| 1993 | 86° | 63° | 74° | 2.11" | — |
| 1992 | 78° | 51° | 65° | — | — |
| 1991 | 93° | 72° | 82° | — | — |
| 1990 | 88° | 68° | 78° | — | — |
| 1989 | 85° | 69° | 77° | 0.05" | — |
| 1988 | 80° | 50° | 65° | — | — |
| 1987 | 79° | 52° | 65° | — | — |
| 1986 | 91° | — | — | — | — |
| 1985 | 90° | 64° | 77° | — | — |
| 1984 | 84° | 52° | 68° | 0.36" | — |
| 1983 | 95° | 70° | 82° | 0.25" | — |
| 1982 | 85° | 56° | 70° | — | — |
| 1981 | 82° | 48° | 65° | — | — |
| 1980 | 92° | 62° | 77° | — | — |
| 1979 | 85° | 62° | 73° | — | — |
| 1978 | 89° | 73° | 81° | 0.25" | — |
| 1977 | 90° | 58° | 74° | — | — |
| 1976 | 90° | 64° | 77° | — | — |
| 1975 | 89° | 65° | 77° | 0.05" | — |
| 1974 | 82° | 45° | 63° | — | — |
| 1973 | 78° | 57° | 68° | — | — |
| 1972 | 87° | 55° | 71° | — | — |
| 1971 | 97° | 67° | 82° | — | — |
55 years of data from WHEATON 3 SE