Weather on September 19
Joliet, IL
55 Years of Data
About This Date
September 19th in Joliet, IL typically brings pleasant fall weather, with average highs around 77°F and lows near 55°F. Over 54 years of records, the warmest September 19th was in 1988 (77°F average), while the coldest was 1991 (51°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 28% of September 19th dates historically, with the wettest September 19th recording 5.84" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 19th in Joliet, IL? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 87° | 63° | 75° | — | — |
| 2024 | 86° | 57° | 72° | — | — |
| 2023 | 73° | 52° | 62° | — | — |
| 2022 | 84° | 62° | 73° | — | — |
| 2021 | 83° | 66° | 74° | — | — |
| 2020 | 63° | 46° | 54° | — | — |
| 2019 | 80° | 60° | 70° | — | — |
| 2018 | 83° | 65° | 74° | — | — |
| 2017 | 79° | 57° | 68° | 0.51" | — |
| 2016 | 81° | 57° | 69° | — | — |
| 2015 | 79° | 60° | 69° | 5.84" | — |
| 2014 | 71° | 49° | 60° | — | — |
| 2013 | 81° | 60° | 70° | 0.41" | — |
| 2012 | 63° | 44° | 53° | — | — |
| 2011 | 66° | 53° | 60° | 2.49" | — |
| 2010 | 66° | 55° | 61° | 0.74" | — |
| 2009 | 79° | 49° | 64° | — | — |
| 2008 | 76° | 56° | 66° | — | — |
| 2007 | 84° | 54° | 69° | — | — |
| 2006 | 71° | 47° | 59° | — | — |
| 2005 | 81° | 58° | 69° | 0.25" | — |
| 2004 | 77° | 57° | 67° | — | — |
| 2003 | 82° | 57° | 70° | — | — |
| 2002 | 82° | 62° | 72° | — | — |
| 2001 | 80° | 55° | 68° | 3.71" | — |
| 2000 | 89° | 56° | 72° | — | — |
| 1999 | 78° | 52° | 65° | — | — |
| 1998 | 83° | 63° | 73° | — | — |
| 1997 | 83° | 57° | 70° | 0.05" | — |
| 1996 | 75° | 50° | 63° | — | — |
| 1995 | 71° | 48° | 60° | — | — |
| 1994 | 79° | 55° | 67° | — | — |
| 1993 | 66° | 50° | 58° | — | — |
| 1992 | 72° | 45° | 58° | 0.03" | — |
| 1991coldest | 62° | 39° | 51° | — | — |
| 1990 | 62° | 52° | 57° | 0.03" | — |
| 1989 | 77° | 54° | 65° | — | — |
| 1988warmest | 87° | 67° | 77° | 0.56" | — |
| 1987 | 72° | 53° | 62° | — | — |
| 1986 | 72° | 55° | 63° | — | — |
| 1985 | 87° | 63° | 75° | — | — |
| 1984 | 77° | 47° | 62° | — | — |
| 1983 | 87° | 63° | 75° | 2.64" | — |
| 1982 | 87° | 45° | 66° | — | — |
| 1981 | 63° | 41° | 52° | — | — |
| 1980 | 75° | 46° | 61° | — | — |
| 1979 | 79° | 49° | 64° | — | — |
| 1978 | 85° | 67° | 76° | 0.46" | — |
| 1977 | 81° | 59° | 70° | — | — |
| 1976 | 79° | 55° | 67° | — | — |
| 1975 | 78° | 61° | 69° | 1.45" | — |
| 1974 | 88° | 59° | 73° | — | — |
| 1973 | 70° | 44° | 57° | — | — |
| 1971 | 63° | 56° | 59° | 1.52" | — |
Joliet, IL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Joliet, IL Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Joliet, IL Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Joliet, IL
Joliet, IL has no months that meet our "pleasant" threshold — every season has tradeoffs.