Weather on September 14
Naperville, IL
55 Years of Data
Avg High
78°F
Avg Low
54°F
Warmest
1998
80°F avg
Coldest
2014
48°F avg
About This Date
September 14th in Naperville, IL typically brings pleasant fall weather, with average highs around 78°F and lows near 54°F. Over 55 years of records, the warmest September 14th was in 1998 (80°F average), while the coldest was 2014 (48°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 29% of September 14th dates historically, with the wettest September 14th recording 8.38" of rain. The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for September 14th in Naperville, IL? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 60° | 69° | 0.64" | — |
| 2024 | 84° | 58° | 71° | — | — |
| 2023 | 69° | 42° | 56° | — | — |
| 2022 | 78° | 51° | 65° | — | — |
| 2021 | 88° | 64° | 76° | — | — |
| 2020 | 77° | 51° | 64° | 0.05" | — |
| 2019 | 75° | 53° | 64° | — | — |
| 2018 | 80° | 53° | 67° | — | — |
| 2017 | 77° | 56° | 66° | — | — |
| 2016 | 86° | 64° | 75° | 0.08" | — |
| 2015 | 71° | 45° | 58° | — | — |
| 2014coldest | 59° | 37° | 48° | — | — |
| 2013 | 67° | 42° | 54° | — | — |
| 2012 | 72° | 48° | 60° | 0.58" | — |
| 2011 | 74° | 48° | 61° | — | — |
| 2010 | 82° | 50° | 66° | — | — |
| 2009 | 83° | 52° | 67° | — | — |
| 2008 | 71° | 59° | 65° | 8.38" | — |
| 2007 | 79° | 46° | 62° | — | — |
| 2006 | 74° | 56° | 65° | — | — |
| 2005 | 94° | 65° | 79° | 0.76" | — |
| 2004 | 85° | 66° | 75° | — | — |
| 2003 | 84° | 64° | 74° | 0.97" | — |
| 2002 | 85° | 49° | 67° | — | — |
| 2001 | 68° | 48° | 58° | — | — |
| 2000 | 75° | 55° | 65° | 1.04" | — |
| 1999 | 73° | 46° | 60° | — | — |
| 1998warmest | 93° | 67° | 80° | 0.1" | — |
| 1997 | 82° | 61° | 71° | — | — |
| 1996 | 65° | 44° | 54° | — | — |
| 1995 | 85° | 53° | 69° | — | — |
| 1994 | 90° | 69° | 79° | — | — |
| 1993 | 77° | 58° | 67° | 5.97" | — |
| 1992 | 82° | 62° | 72° | — | — |
| 1991 | 92° | 67° | 79° | 0.89" | — |
| 1990 | 85° | 66° | 75° | — | — |
| 1989 | 64° | 55° | 60° | 0.18" | — |
| 1988 | 83° | 48° | 65° | — | — |
| 1987 | 80° | 47° | 63° | — | — |
| 1986 | 74° | 57° | 65° | — | — |
| 1985 | 68° | 40° | 54° | — | — |
| 1984 | 78° | 57° | 68° | — | — |
| 1983 | 73° | 43° | 58° | — | — |
| 1982 | 86° | 68° | 77° | 0.33" | — |
| 1981 | 84° | 62° | 73° | — | — |
| 1980 | 77° | 60° | 69° | — | — |
| 1979 | 70° | 50° | 60° | — | — |
| 1978 | 84° | 70° | 77° | 0.28" | — |
| 1977 | 72° | 46° | 59° | 1.12" | — |
| 1976 | 84° | 60° | 72° | — | — |
| 1975 | 77° | 34° | 55° | — | — |
| 1974 | 69° | 35° | 52° | — | — |
| 1973 | 80° | 54° | 67° | — | — |
| 1972 | 82° | 55° | 69° | 0.33" | — |
| 1971 | 91° | 51° | 71° | — | — |
55 years of data from LISLE - MORTON ARBORETUM