Weather on September 2
Naperville, IL
55 Years of Data
Avg High
82°F
Avg Low
59°F
Warmest
2000
83°F avg
Coldest
2017
55°F avg
About This Date
September 2nd in Naperville, IL typically brings warm fall weather, with average highs around 82°F and lows near 59°F. Over 55 years of records, the warmest September 2nd was in 2000 (83°F average), while the coldest was 2017 (55°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 22% of September 2nd dates historically, with the wettest September 2nd recording 2.41" of rain. The last decade has been 4.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.7°F cooler on this date compared to 20-30 years ago.
Planning for September 2nd in Naperville, IL? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 51° | 65° | — | — |
| 2024 | 79° | 55° | 67° | — | — |
| 2023 | 82° | 53° | 68° | — | — |
| 2022 | 87° | 64° | 76° | — | — |
| 2021 | 79° | 54° | 66° | — | — |
| 2020 | 72° | 67° | 69° | 0.51" | — |
| 2019 | 72° | 59° | 65° | 0.05" | — |
| 2018 | 86° | 70° | 78° | 2.16" | — |
| 2017coldest | 70° | 41° | 55° | — | — |
| 2016 | 75° | 55° | 65° | — | — |
| 2015 | 88° | 70° | 79° | — | — |
| 2014 | 82° | 65° | 73° | 0.33" | — |
| 2013 | 83° | 59° | 71° | 2.41" | — |
| 2012 | 74° | 69° | 71° | — | — |
| 2011 | 93° | 67° | 80° | 0.15" | — |
| 2010 | 82° | 69° | 76° | 0.18" | — |
| 2009 | 74° | 41° | 57° | — | — |
| 2008 | 83° | 54° | 68° | — | — |
| 2007 | 81° | 55° | 68° | — | — |
| 2006 | 77° | 52° | 64° | — | — |
| 2005 | 85° | 53° | 69° | — | — |
| 2004 | 84° | 60° | 72° | — | — |
| 2003 | 76° | 58° | 67° | 1.27" | — |
| 2002 | 88° | 66° | 77° | — | — |
| 2001 | 84° | 47° | 65° | — | — |
| 2000warmest | 96° | 69° | 83° | — | — |
| 1999 | 93° | 56° | 74° | — | — |
| 1998 | 81° | 55° | 68° | — | — |
| 1997 | 88° | 63° | 75° | — | — |
| 1996 | 86° | 56° | 71° | — | — |
| 1995 | 86° | 58° | 72° | — | — |
| 1994 | 72° | 47° | 59° | — | — |
| 1993 | 79° | 59° | 69° | — | — |
| 1992 | 79° | 64° | 71° | — | — |
| 1991 | 80° | 57° | 69° | — | — |
| 1990 | 89° | 69° | 79° | — | — |
| 1989 | 81° | 53° | 67° | — | — |
| 1988 | 85° | 55° | 70° | — | — |
| 1987 | 76° | 56° | 66° | — | — |
| 1986 | 85° | 55° | 70° | — | — |
| 1985 | 84° | 65° | 74° | — | — |
| 1984 | 91° | 69° | 80° | — | — |
| 1983 | 89° | 58° | 73° | — | — |
| 1982 | 84° | 63° | 73° | — | — |
| 1981 | 80° | 61° | 70° | 0.08" | — |
| 1980 | 80° | 67° | 73° | — | — |
| 1979 | 87° | 67° | 77° | — | — |
| 1978 | 87° | 59° | 73° | — | — |
| 1977 | 83° | 64° | 73° | 0.79" | — |
| 1976 | 78° | 46° | 62° | — | — |
| 1975 | 85° | 64° | 74° | — | — |
| 1974 | 68° | 50° | 59° | 0.61" | — |
| 1973 | 92° | 68° | 80° | — | — |
| 1972 | 70° | 59° | 64° | 0.15" | — |
| 1971 | 89° | 68° | 79° | — | — |
55 years of data from WHEATON 3 SE