Weather on September 15
Elgin, IL
55 Years of Data
Avg High
75°F
Avg Low
52°F
Warmest
1991
79°F avg
Coldest
2007
50°F avg
About This Date
September 15th 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 15th was in 1991 (79°F average), while the coldest was 2007 (50°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 28% of September 15th dates historically, with the wettest September 15th recording 2.46" of rain. The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.0°F warmer on this date compared to 20-30 years ago.
Planning for September 15th in Elgin, IL? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 59° | 72° | — | — |
| 2024 | 89° | 62° | 76° | — | — |
| 2023 | 74° | 47° | 60° | — | — |
| 2022 | 79° | 52° | 65° | — | — |
| 2021 | 85° | 54° | 69° | — | — |
| 2020 | 78° | 55° | 67° | — | — |
| 2019 | 80° | 53° | 67° | 1.04" | — |
| 2018 | 87° | 58° | 72° | — | — |
| 2017 | 80° | 60° | 70° | — | — |
| 2016 | 75° | 56° | 65° | — | — |
| 2015 | 82° | 53° | 68° | — | — |
| 2014 | 62° | 40° | 51° | — | — |
| 2013 | 70° | 43° | 56° | 0.13" | — |
| 2012 | 76° | 47° | 61° | — | — |
| 2011 | 60° | 39° | 50° | 0.05" | — |
| 2010 | 77° | 51° | 64° | — | — |
| 2009 | 84° | 54° | 69° | — | — |
| 2008 | 65° | 56° | 60° | 2.46" | — |
| 2007coldest | 65° | 35° | 50° | — | — |
| 2006 | 75° | 52° | 63° | — | — |
| 2005 | 78° | 53° | 66° | — | — |
| 2004 | 86° | 67° | 76° | 0.18" | — |
| 2003 | 69° | 50° | 60° | 0.25" | — |
| 2002 | 82° | 54° | 68° | — | — |
| 2001 | 64° | 49° | 56° | — | — |
| 2000 | 74° | 49° | 61° | 0.36" | — |
| 1999 | 70° | 43° | 56° | — | — |
| 1998 | 73° | 67° | 70° | 1.78" | — |
| 1997 | 78° | 57° | 68° | — | — |
| 1996 | 60° | 45° | 52° | — | — |
| 1995 | 78° | 49° | 63° | — | — |
| 1994 | 90° | 67° | 78° | — | — |
| 1993 | 70° | 50° | 60° | 1.12" | — |
| 1992 | 79° | 61° | 70° | 1.02" | — |
| 1991warmest | 89° | 69° | 79° | 0.38" | — |
| 1990 | 72° | 53° | 62° | 0.25" | — |
| 1989 | 64° | 46° | 55° | — | — |
| 1988 | 81° | 52° | 66° | — | — |
| 1987 | 75° | 49° | 62° | — | — |
| 1986 | 69° | 50° | 60° | — | — |
| 1985 | — | 41° | — | — | — |
| 1984 | 65° | 44° | 54° | 0.23" | — |
| 1983 | 71° | 42° | 57° | — | — |
| 1982 | 80° | 56° | 68° | — | — |
| 1981 | — | 52° | — | — | — |
| 1980 | 65° | 54° | 59° | 0.03" | — |
| 1979 | 63° | 45° | 54° | — | — |
| 1978 | 76° | 54° | 65° | 0.41" | — |
| 1977 | 70° | 48° | 59° | — | — |
| 1976 | 78° | 56° | 67° | — | — |
| 1975 | 63° | 50° | 56° | — | — |
| 1974 | 75° | 52° | 63° | — | — |
| 1973 | 75° | 44° | 60° | — | — |
| 1971 | 82° | 52° | 67° | — | — |
54 years of data from ELGIN WATER