Weather on September 18
Elgin, IL
55 Years of Data
Avg High
75°F
Avg Low
52°F
Warmest
2018
77°F avg
Coldest
1973
46°F avg
About This Date
September 18th in Elgin, IL typically brings pleasant fall weather, with average highs around 75°F and lows near 52°F. Over 54 years of records, the warmest September 18th was in 2018 (77°F average), while the coldest was 1973 (46°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 33% of September 18th dates historically, with the wettest September 18th recording 5.72" of rain. The last decade has been 5.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.6°F warmer on this date compared to 20-30 years ago.
Planning for September 18th in Elgin, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
1.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 57° | 72° | — | — |
| 2024 | 86° | 55° | 71° | — | — |
| 2023 | 67° | 49° | 58° | 0.76" | — |
| 2022 | 83° | 67° | 75° | — | — |
| 2021 | 89° | 57° | 73° | 1.6" | — |
| 2020 | 71° | 54° | 62° | — | — |
| 2019 | 81° | 59° | 70° | — | — |
| 2018warmest | 90° | 65° | 77° | — | — |
| 2017 | 85° | 52° | 68° | — | — |
| 2016 | 82° | 54° | 68° | — | — |
| 2015 | 85° | 64° | 74° | 3.07" | — |
| 2014 | 71° | 42° | 57° | — | — |
| 2013 | 70° | 44° | 57° | — | — |
| 2012 | 78° | 46° | 62° | 0.76" | — |
| 2011 | 69° | 46° | 58° | — | — |
| 2010 | 74° | 49° | 61° | — | — |
| 2009 | 74° | 48° | 61° | — | — |
| 2008 | 81° | 53° | 67° | — | — |
| 2007 | 81° | 55° | 68° | — | — |
| 2006 | 83° | 55° | 69° | 1.4" | — |
| 2005 | 79° | 49° | 64° | — | — |
| 2004 | 72° | 51° | 61° | — | — |
| 2003 | 82° | 53° | 68° | — | — |
| 2002 | 80° | 51° | 66° | 0.3" | — |
| 2001 | 64° | 58° | 61° | — | — |
| 2000 | 80° | 52° | 66° | — | — |
| 1999 | 74° | 45° | 59° | — | — |
| 1998 | 79° | 55° | 67° | — | — |
| 1997 | 82° | 54° | 68° | 0.08" | — |
| 1996 | 67° | 49° | 58° | 0.03" | — |
| 1995 | 65° | 43° | 54° | — | — |
| 1994 | 76° | 51° | 63° | — | — |
| 1993 | 67° | 50° | 58° | — | — |
| 1992 | 74° | 65° | 69° | 0.58" | — |
| 1991 | 77° | 51° | 64° | 0.33" | — |
| 1990 | 63° | 48° | 55° | — | — |
| 1989 | 76° | 49° | 62° | — | — |
| 1988 | 90° | 63° | 76° | — | — |
| 1987 | 72° | 61° | 66° | 0.51" | — |
| 1986 | 65° | 49° | 57° | 0.13" | — |
| 1985 | — | 57° | — | — | — |
| 1984 | 69° | 44° | 57° | — | — |
| 1983 | 75° | 45° | 60° | 5.72" | — |
| 1982 | 65° | 46° | 55° | 1.07" | — |
| 1981 | — | 40° | — | 0.03" | — |
| 1980 | 63° | 43° | 53° | — | — |
| 1979 | 76° | 46° | 61° | — | — |
| 1978 | 73° | 58° | 65° | 5.08" | — |
| 1977 | 79° | 60° | 69° | 1.98" | — |
| 1976 | 71° | 49° | 60° | — | — |
| 1975 | 77° | 57° | 67° | — | — |
| 1974 | 74° | 48° | 61° | — | — |
| 1973coldest | 55° | 37° | 46° | 0.33" | — |
| 1971 | 66° | 54° | 60° | — | — |
54 years of data from ELGIN WATER