Weather on October 9
Joliet, IL
55 Years of Data
Avg High
68°F
Avg Low
44°F
Warmest
1997
74°F avg
Coldest
2000
37°F avg
About This Date
October 9th in Joliet, IL typically brings mild fall weather, with average highs around 68°F and lows near 44°F. Over 55 years of records, the warmest October 9th was in 1997 (74°F average), while the coldest was 2000 (37°F) — a 37°F range across recorded history. Rain or other precipitation has occurred on about 31% of October 9th dates historically, with the wettest October 9th recording 2.92" of rain. The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
Planning for October 9th in Joliet, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 67° | 41° | 54° | — | — |
| 2024 | 73° | 43° | 58° | — | — |
| 2023 | 53° | 43° | 48° | — | — |
| 2022 | 57° | 34° | 45° | — | — |
| 2021 | 74° | 60° | 67° | 0.08" | — |
| 2020 | 72° | 45° | 58° | — | — |
| 2019 | 72° | 45° | 58° | — | — |
| 2018 | 83° | 66° | 74° | — | — |
| 2017 | 78° | 52° | 65° | — | — |
| 2016 | 65° | 45° | 55° | — | — |
| 2015 | 77° | 52° | 64° | — | — |
| 2014 | 66° | 43° | 54° | — | — |
| 2013 | 76° | 47° | 61° | — | — |
| 2012 | 58° | 30° | 44° | — | — |
| 2011 | 82° | 52° | 67° | — | — |
| 2010 | 78° | 44° | 61° | — | — |
| 2009 | 55° | 44° | 50° | 0.51" | — |
| 2008 | 65° | 46° | 55° | — | — |
| 2007 | 87° | 54° | 70° | — | — |
| 2006 | 74° | 45° | 59° | — | — |
| 2005 | 54° | 42° | 48° | — | — |
| 2004 | 67° | 50° | 58° | 0.81" | — |
| 2003 | 80° | 51° | 66° | — | — |
| 2002 | 67° | 47° | 57° | — | — |
| 2001 | 63° | 42° | 52° | — | — |
| 2000coldest | 45° | 30° | 37° | — | — |
| 1999 | 66° | 59° | 63° | 0.13" | — |
| 1998 | 64° | 43° | 53° | — | — |
| 1997warmest | 85° | 64° | 74° | 0.64" | — |
| 1996 | 52° | 37° | 44° | 0.03" | — |
| 1995 | 64° | 44° | 54° | — | — |
| 1994 | 57° | 42° | 50° | 1.85" | — |
| 1993 | 78° | 46° | 62° | 2.41" | — |
| 1992 | 71° | 45° | 58° | 0.03" | — |
| 1991 | 77° | 46° | 62° | — | — |
| 1990 | 60° | 46° | 53° | 2.92" | — |
| 1989 | 65° | 33° | 49° | — | — |
| 1988 | 65° | 42° | 53° | — | — |
| 1987 | 57° | 29° | 43° | 0.33" | — |
| 1986 | 72° | 40° | 56° | 0.05" | — |
| 1985 | 65° | 45° | 55° | 1.09" | — |
| 1984 | 75° | 42° | 59° | 0.05" | — |
| 1983 | 60° | 40° | 50° | 0.3" | — |
| 1982 | 78° | 41° | 60° | 0.38" | — |
| 1981 | 60° | 38° | 49° | — | — |
| 1980 | 80° | 49° | 64° | — | — |
| 1979 | 72° | 45° | 58° | — | — |
| 1978 | 60° | 31° | 45° | — | — |
| 1977 | 61° | 36° | 48° | 0.03" | — |
| 1976 | 58° | 37° | 47° | — | — |
| 1975 | 66° | 47° | 56° | — | — |
| 1974 | 72° | 44° | 58° | — | — |
| 1973 | 84° | 60° | 72° | — | — |
| 1972 | 70° | 41° | 55° | — | — |
| 1971 | 56° | 42° | 49° | — | — |
55 years of data from JOLIET