Weather on September 8
Joliet, IL
55 Years of Data
Avg High
80°F
Avg Low
58°F
Warmest
1985
82°F avg
Coldest
1986
55°F avg
About This Date
September 8th in Joliet, IL typically brings warm fall weather, with average highs around 80°F and lows near 58°F. Over 54 years of records, the warmest September 8th was in 1985 (82°F average), while the coldest was 1986 (55°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 24% of September 8th dates historically, with the wettest September 8th recording 3.33" of rain. The last decade has been 6.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 6.3°F cooler on this date compared to 20-30 years ago.
Planning for September 8th in Joliet, IL? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 42° | 58° | — | — |
| 2024 | 71° | 46° | 59° | — | — |
| 2023 | 71° | 63° | 67° | — | — |
| 2022 | 80° | 59° | 70° | — | — |
| 2021 | 87° | 58° | 72° | — | — |
| 2020 | 80° | 59° | 70° | 1.07" | — |
| 2019 | 77° | 56° | 66° | — | — |
| 2018 | 69° | 63° | 66° | 0.56" | — |
| 2017 | 69° | 48° | 59° | — | — |
| 2016 | 90° | 69° | 79° | 2.79" | — |
| 2015 | 87° | 73° | 80° | — | — |
| 2014 | 77° | 55° | 66° | — | — |
| 2013 | 86° | 61° | 73° | — | — |
| 2012 | 77° | 54° | 65° | 0.97" | — |
| 2011 | 70° | 53° | 61° | — | — |
| 2010 | 78° | 53° | 66° | — | — |
| 2009 | 78° | 49° | 63° | — | — |
| 2008 | 73° | 57° | 65° | — | — |
| 2007 | 83° | 71° | 77° | 0.13" | — |
| 2006 | 82° | 57° | 70° | — | — |
| 2005 | 88° | 65° | 76° | — | — |
| 2004 | 75° | 57° | 66° | — | — |
| 2003 | 84° | 59° | 72° | — | — |
| 2002 | 93° | 61° | 77° | — | — |
| 2001 | 88° | 72° | 80° | — | — |
| 2000 | 89° | 64° | 77° | — | — |
| 1999 | 83° | 55° | 69° | — | — |
| 1998 | 77° | 56° | 66° | 0.03" | — |
| 1997 | 78° | 63° | 70° | 0.38" | — |
| 1996 | 85° | 68° | 76° | — | — |
| 1995 | 88° | 57° | 72° | 1.93" | — |
| 1994 | 76° | 52° | 64° | — | — |
| 1993 | 73° | 50° | 62° | — | — |
| 1992 | 83° | 52° | 67° | 1.6" | — |
| 1991 | 90° | 58° | 74° | — | — |
| 1990 | 79° | 65° | 72° | — | — |
| 1989 | 83° | 68° | 75° | 0.33" | — |
| 1988 | 75° | 52° | 63° | — | — |
| 1987 | 78° | 65° | 71° | 0.03" | — |
| 1986coldest | 72° | 38° | 55° | — | — |
| 1985warmest | 93° | 71° | 82° | — | — |
| 1984 | 89° | 64° | 77° | — | — |
| 1983 | 79° | 53° | 66° | — | — |
| 1982 | 70° | 54° | 62° | — | — |
| 1981 | 74° | 53° | 63° | 1.4" | — |
| 1980 | 73° | 58° | 65° | 3.33" | — |
| 1979 | 70° | 52° | 61° | — | — |
| 1978 | 93° | 62° | 78° | — | — |
| 1977 | 82° | 53° | 68° | — | — |
| 1976 | 86° | 56° | 71° | — | — |
| 1975 | 81° | 55° | 68° | — | — |
| 1974 | 86° | 56° | 71° | — | — |
| 1973 | 80° | 58° | 69° | — | — |
| 1971 | 94° | 62° | 78° | — | — |
54 years of data from JOLIET