Weather on September 25
Joliet, IL
55 Years of Data
Avg High
73°F
Avg Low
50°F
Warmest
2017
77°F avg
Coldest
1989
50°F avg
About This Date
September 25th in Joliet, IL typically brings pleasant fall weather, with average highs around 73°F and lows near 50°F. Over 54 years of records, the warmest September 25th was in 2017 (77°F average), while the coldest was 1989 (50°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 31% of September 25th dates historically, with the wettest September 25th recording 5.89" of rain. The last decade has been 6.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.7°F warmer on this date compared to 20-30 years ago.
Planning for September 25th in Joliet, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 58° | 68° | — | — |
| 2024 | 64° | 48° | 56° | 3.56" | — |
| 2023 | 76° | 56° | 66° | — | — |
| 2022 | 74° | 53° | 63° | 0.13" | — |
| 2021 | 78° | 48° | 63° | 0.28" | — |
| 2020 | 78° | 53° | 66° | — | — |
| 2019 | 78° | 56° | 67° | 0.05" | — |
| 2018 | 74° | 51° | 62° | 0.64" | — |
| 2017warmest | 89° | 65° | 77° | — | — |
| 2016 | 80° | 63° | 71° | — | — |
| 2015 | 79° | 60° | 69° | — | — |
| 2014 | 75° | 53° | 64° | — | — |
| 2013 | 72° | 50° | 61° | — | — |
| 2012 | 70° | 39° | 54° | — | — |
| 2011 | 62° | 51° | 57° | 0.13" | — |
| 2010 | 89° | 45° | 67° | 0.08" | — |
| 2009 | 72° | 63° | 67° | — | — |
| 2008 | 82° | 58° | 70° | — | — |
| 2007 | 86° | 56° | 71° | — | — |
| 2006 | 65° | 45° | 55° | — | — |
| 2005 | 78° | 63° | 70° | — | — |
| 2004 | 79° | 54° | 66° | — | — |
| 2003 | 74° | 44° | 59° | 0.05" | — |
| 2002 | 64° | 44° | 54° | — | — |
| 2001 | 67° | 43° | 55° | 0.03" | — |
| 2000 | 58° | 48° | 53° | 0.05" | — |
| 1999 | 69° | 50° | 60° | — | — |
| 1998 | 69° | 46° | 58° | — | — |
| 1997 | 71° | 49° | 60° | — | — |
| 1996 | 69° | 45° | 57° | 0.13" | — |
| 1995 | 65° | 42° | 53° | — | — |
| 1994 | 69° | 51° | 60° | 1.75" | — |
| 1993 | 68° | 45° | 56° | — | — |
| 1992 | 67° | 44° | 55° | — | — |
| 1991 | 68° | 42° | 55° | — | — |
| 1990 | 68° | 40° | 54° | — | — |
| 1989coldest | 62° | 38° | 50° | — | — |
| 1988 | 69° | 47° | 58° | — | — |
| 1987 | 71° | 46° | 59° | — | — |
| 1986 | 74° | 67° | 70° | 1.7" | — |
| 1985 | 61° | 47° | 54° | — | — |
| 1984 | 85° | 65° | 75° | 0.76" | — |
| 1983 | 66° | 35° | 51° | — | — |
| 1982 | 68° | 49° | 58° | — | — |
| 1981 | 77° | 52° | 64° | — | — |
| 1980 | 71° | 46° | 59° | — | — |
| 1979 | 75° | 45° | 60° | 0.1" | — |
| 1978 | 81° | 50° | 65° | — | — |
| 1977 | 74° | 52° | 63° | — | — |
| 1976 | 67° | 45° | 56° | — | — |
| 1975 | 67° | 52° | 59° | — | — |
| 1974 | 75° | 51° | 63° | — | — |
| 1973 | 85° | 64° | 74° | 5.89" | — |
| 1971 | 68° | 49° | 58° | 0.91" | — |
54 years of data from JOLIET