Weather on July 1
Naperville, IL
55 Years of Data
Avg High
85°F
Avg Low
60°F
Warmest
2018
84°F avg
Coldest
1982
62°F avg
About This Date
July 1st in Naperville, IL typically brings warm summer weather, with average highs around 85°F and lows near 60°F — a 25°F daily swing. Over 55 years of records, the warmest July 1st was in 2018 (84°F average), while the coldest was 1982 (62°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 29% of July 1st dates historically, with the wettest July 1st recording 6.91" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for July 1st in Naperville, IL? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 66° | 78° | — | — |
| 2024 | — | 52° | — | — | — |
| 2023 | 84° | 67° | 75° | — | — |
| 2022 | 92° | 72° | 82° | — | — |
| 2021 | 84° | 64° | 74° | 0.76" | — |
| 2020 | 87° | 67° | 77° | 0.2" | — |
| 2019 | 91° | 67° | 79° | 0.89" | — |
| 2018warmest | 94° | 75° | 84° | — | — |
| 2017 | 84° | 62° | 73° | — | — |
| 2016 | 78° | 61° | 69° | — | — |
| 2015 | 78° | 56° | 67° | — | — |
| 2014 | 86° | 66° | 76° | 5.08" | — |
| 2013 | 79° | 55° | 67° | — | — |
| 2012 | 90° | 66° | 78° | — | — |
| 2011 | 88° | 57° | 72° | — | — |
| 2010 | 77° | 49° | 63° | — | — |
| 2009 | 66° | — | — | 0.03" | — |
| 2008 | 80° | 52° | 66° | — | — |
| 2007 | 80° | 53° | 67° | — | — |
| 2006 | 89° | 62° | 76° | — | — |
| 2005 | 89° | 64° | 77° | — | — |
| 2004 | 85° | 56° | 70° | — | — |
| 2003 | 86° | 55° | 71° | — | — |
| 2002 | 95° | 70° | 82° | — | — |
| 2001 | 90° | 64° | 77° | — | — |
| 2000 | 85° | 55° | 70° | 1.07" | — |
| 1999 | 82° | 65° | 73° | 1.27" | — |
| 1998 | 86° | 59° | 73° | — | — |
| 1997 | 92° | 63° | 77° | 3.12" | — |
| 1996 | 88° | 61° | 74° | — | — |
| 1995 | 79° | 55° | 67° | — | — |
| 1994 | 86° | 62° | 74° | — | — |
| 1993 | 76° | 63° | 69° | 0.05" | — |
| 1992 | 92° | 58° | 75° | — | — |
| 1991 | 95° | 68° | 82° | 0.13" | — |
| 1990 | 92° | 66° | 79° | 0.58" | — |
| 1989 | 89° | 60° | 75° | — | — |
| 1988 | 79° | 51° | 65° | — | — |
| 1987 | 78° | 60° | 69° | 0.13" | — |
| 1986 | 67° | 60° | 63° | — | — |
| 1985 | 85° | 55° | 70° | — | — |
| 1984 | 81° | 50° | 65° | — | — |
| 1983 | 86° | 65° | 75° | 0.51" | — |
| 1982coldest | 79° | 45° | 62° | — | — |
| 1981 | 76° | 58° | 67° | — | — |
| 1980 | 87° | 61° | 74° | — | — |
| 1979 | 87° | 54° | 70° | — | — |
| 1978 | 84° | 66° | 75° | 2.34" | — |
| 1977 | 79° | 57° | 68° | 6.91" | — |
| 1976 | 81° | 47° | 64° | 0.05" | — |
| 1975 | 90° | 55° | 72° | — | — |
| 1974 | 90° | 52° | 71° | — | — |
| 1973 | 88° | 55° | 71° | — | — |
| 1972 | 88° | 54° | 71° | — | — |
| 1971 | 84° | 62° | 73° | — | — |
55 years of data from WHEATON 3 SE