Weather on October 27
Chicago, IL
55 Years of Data
Avg High
58°F
Avg Low
44°F
Warmest
1998
66°F avg
Coldest
1997
34°F avg
About This Date
October 27th in Chicago, IL typically brings cool fall weather, with average highs around 58°F and lows near 44°F. Over 55 years of records, the warmest October 27th was in 1998 (66°F average), while the coldest was 1997 (34°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 15% of October 27th dates historically, with the wettest October 27th recording 1.12" of rain. The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
Planning for October 27th in Chicago, IL? Bring layers as temperatures can vary throughout the day.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 56° | 49° | 52° | — | — |
| 2024 | 58° | 44° | 51° | — | — |
| 2023 | 70° | 45° | 57° | — | — |
| 2022 | 52° | 43° | 47° | — | — |
| 2021 | 54° | 44° | 49° | — | — |
| 2020 | 39° | 34° | 36° | — | — |
| 2019 | 59° | 45° | 52° | — | — |
| 2018 | 53° | 45° | 49° | — | — |
| 2017 | 55° | 38° | 46° | — | — |
| 2016 | 51° | 46° | 49° | — | — |
| 2015 | 57° | 52° | 54° | — | — |
| 2014 | 76° | 54° | 65° | — | — |
| 2013 | 54° | 37° | 45° | — | — |
| 2012 | 47° | 40° | 43° | — | — |
| 2011 | 53° | 44° | 49° | — | — |
| 2010 | 68° | 46° | 57° | — | — |
| 2009 | 52° | 50° | 51° | — | — |
| 2008 | 48° | 39° | 44° | — | — |
| 2007 | 56° | 49° | 52° | — | — |
| 2006 | 47° | 43° | 45° | — | — |
| 2005 | 52° | 45° | 48° | — | — |
| 2004 | 65° | 54° | 59° | — | — |
| 2003 | 43° | 36° | 39° | 0.03" | — |
| 2002 | 46° | 37° | 42° | — | — |
| 2001 | 47° | 35° | 41° | — | — |
| 2000 | 72° | 53° | 62° | — | — |
| 1999 | 63° | 42° | 52° | — | — |
| 1998warmest | 73° | 59° | 66° | 1.12" | — |
| 1997coldest | 39° | 29° | 34° | — | — |
| 1996 | 69° | 53° | 61° | — | — |
| 1995 | 59° | 49° | 54° | 0.66" | — |
| 1994 | 57° | 36° | 46° | — | — |
| 1993 | 71° | 43° | 57° | — | — |
| 1992 | 58° | 41° | 49° | — | — |
| 1991 | 56° | 48° | 52° | 1.07" | — |
| 1990 | 59° | 36° | 47° | — | — |
| 1989 | 75° | 54° | 64° | — | — |
| 1988 | 57° | 35° | 46° | — | — |
| 1987 | 54° | 40° | 47° | 0.13" | — |
| 1986 | 61° | 52° | 56° | 0.03" | — |
| 1985 | 71° | 53° | 62° | — | — |
| 1984 | 73° | 55° | 64° | 0.13" | — |
| 1983 | 60° | 40° | 50° | — | — |
| 1982 | 67° | 41° | 54° | — | — |
| 1981 | 58° | 48° | 53° | — | — |
| 1980 | 42° | 33° | 38° | — | — |
| 1979 | 62° | 40° | 51° | — | — |
| 1978 | 60° | 41° | 51° | — | — |
| 1977 | 61° | 45° | 53° | — | — |
| 1976 | 45° | 32° | 38° | 0.53" | — |
| 1975 | 67° | 46° | 56° | — | — |
| 1974 | 67° | 49° | 58° | — | — |
| 1973 | 57° | 49° | 53° | — | — |
| 1972 | 51° | 40° | 45° | — | — |
| 1971 | 74° | 56° | 65° | — | — |
55 years of data from CHICAGO GRANT PARK