Weather on September 19
Naperville, IL
55 Years of Data
Avg High
78°F
Avg Low
54°F
Warmest
1978
81°F avg
Coldest
1991
49°F avg
About This Date
September 19th 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 19th was in 1978 (81°F average), while the coldest was 1991 (49°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 42% of September 19th dates historically, with the wettest September 19th recording 4.24" of rain. The last decade has been 4.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.0°F cooler on this date compared to 20-30 years ago.
Planning for September 19th in Naperville, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 54° | 71° | — | — |
| 2024 | 89° | 52° | 70° | — | — |
| 2023 | 73° | 49° | 61° | 0.08" | — |
| 2022 | 85° | 63° | 74° | 0.64" | — |
| 2021 | 81° | 58° | 69° | — | — |
| 2020 | 61° | 37° | 49° | — | — |
| 2019 | 82° | 56° | 69° | — | — |
| 2018 | 80° | 62° | 71° | — | — |
| 2017 | 80° | 53° | 67° | 0.56" | — |
| 2016 | 81° | 53° | 67° | 0.08" | — |
| 2015 | 76° | 60° | 68° | 3.23" | — |
| 2014 | 71° | 46° | 59° | 0.08" | — |
| 2013 | 80° | 62° | 71° | 1.4" | — |
| 2012 | 62° | 37° | 50° | — | — |
| 2011 | 65° | 54° | 59° | 2.06" | — |
| 2010 | 65° | 54° | 59° | 0.41" | — |
| 2009 | 76° | 55° | 65° | — | — |
| 2008 | 76° | 52° | 64° | — | — |
| 2007 | 89° | 65° | 77° | — | — |
| 2006 | 71° | 47° | 59° | — | — |
| 2005 | 84° | 68° | 76° | 0.23" | — |
| 2004 | 80° | 56° | 68° | — | — |
| 2003 | 80° | 55° | 68° | — | — |
| 2002 | 82° | 72° | 77° | 0.05" | — |
| 2001 | 69° | 60° | 65° | 4.24" | — |
| 2000 | 90° | 69° | 79° | — | — |
| 1999 | 82° | 47° | 64° | — | — |
| 1998 | 88° | 58° | 73° | — | — |
| 1997 | 85° | 69° | 77° | — | — |
| 1996 | 78° | 44° | 61° | — | — |
| 1995 | 70° | 53° | 61° | — | — |
| 1994 | 85° | 49° | 67° | — | — |
| 1993 | 68° | 48° | 58° | — | — |
| 1992 | 71° | 42° | 57° | — | — |
| 1991coldest | 61° | 38° | 49° | — | — |
| 1990 | 62° | 54° | 58° | 0.1" | — |
| 1989 | 79° | 49° | 64° | — | — |
| 1988 | 75° | 61° | 68° | 0.58" | — |
| 1987 | 71° | 50° | 61° | 0.61" | — |
| 1986 | 69° | 60° | 65° | — | — |
| 1985 | 88° | 67° | 77° | — | — |
| 1984 | 87° | 53° | 70° | 2.97" | — |
| 1983 | 86° | 60° | 73° | 2.97" | — |
| 1982 | 71° | 40° | 55° | — | — |
| 1981 | 78° | 45° | 61° | 0.48" | — |
| 1980 | 81° | 51° | 66° | — | — |
| 1979 | 76° | 45° | 60° | — | — |
| 1978warmest | 92° | 70° | 81° | 0.23" | — |
| 1977 | 78° | 62° | 70° | 0.03" | — |
| 1976 | 84° | 45° | 64° | — | — |
| 1975 | 77° | 57° | 67° | 0.56" | — |
| 1974 | 85° | 54° | 69° | — | — |
| 1973 | 69° | 38° | 53° | — | — |
| 1972 | 84° | 62° | 73° | 0.89" | — |
| 1971 | 68° | 57° | 63° | 2.54" | — |
55 years of data from WHEATON 3 SE