Weather on December 15
Chicago, IL
55 Years of Data
Avg High
39°F
Avg Low
27°F
Warmest
2021
55°F avg
Coldest
1989
2°F avg
About This Date
December 15th in Chicago, IL typically brings cold winter weather, with average highs around 39°F and lows near 27°F. Over 55 years of records, the warmest December 15th was in 2021 (55°F average), while the coldest was 1989 (2°F) — a 53°F range across recorded history. Precipitation has occurred on 20% of recorded December 15th dates, with snow falling 4% of the time (heaviest snowfall: 6"). The last decade has been 2.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.4°F cooler on this date compared to 20-30 years ago.
Planning for December 15th in Chicago, IL? Bundle up with warm layers and protect extremities from the cold.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 23° | 3° | 13° | — | — |
| 2024 | 45° | 35° | 40° | — | — |
| 2023 | 54° | 39° | 46° | — | — |
| 2022 | 39° | 31° | 35° | — | — |
| 2021warmest | 63° | 48° | 55° | — | — |
| 2020 | 33° | 25° | 29° | — | — |
| 2019 | 28° | 21° | 25° | — | — |
| 2018 | 43° | 33° | 38° | — | — |
| 2017 | 38° | 23° | 30° | — | — |
| 2016 | 13° | 2° | 7° | — | — |
| 2015 | 44° | 40° | 42° | — | — |
| 2014 | 46° | 38° | 42° | — | — |
| 2013 | 25° | 13° | 19° | — | — |
| 2012 | 51° | 41° | 46° | — | — |
| 2011 | 59° | 36° | 47° | — | — |
| 2010 | 28° | 14° | 21° | — | — |
| 2009 | 30° | 13° | 21° | — | — |
| 2008 | 38° | 9° | 23° | — | — |
| 2007 | 32° | 30° | 31° | — | — |
| 2006 | 47° | 37° | 42° | — | — |
| 2005 | 35° | 25° | 30° | — | — |
| 2004 | 37° | 19° | 28° | — | — |
| 2003 | 38° | 24° | 31° | 0.03" | — |
| 2002 | 46° | 32° | 39° | — | — |
| 2001 | 41° | 33° | 37° | — | — |
| 2000 | 32° | 10° | 21° | — | — |
| 1999 | 40° | 34° | 37° | 0.41" | — |
| 1998 | 52° | 36° | 44° | — | — |
| 1997 | 47° | 28° | 37° | — | — |
| 1996 | 46° | 30° | 38° | 0.61" | — |
| 1995 | 41° | 31° | 36° | — | — |
| 1994 | 38° | 28° | 33° | — | — |
| 1993 | 43° | 35° | 39° | 0.1" | — |
| 1992 | 43° | 31° | 37° | 0.1" | — |
| 1991 | 33° | 26° | 30° | 0.15" | — |
| 1990 | 47° | 34° | 40° | 0.43" | — |
| 1989coldest | 9° | -5° | 2° | — | — |
| 1988 | 48° | 19° | 34° | — | — |
| 1987 | 36° | 32° | 34° | 4.39" | 6" |
| 1986 | 44° | 29° | 36° | — | — |
| 1985 | 32° | 11° | 21° | — | — |
| 1984 | 48° | 36° | 42° | — | — |
| 1983 | 36° | 23° | 29° | 0.53" | 0.3" |
| 1982 | 40° | 36° | 38° | 0.15" | — |
| 1981 | 35° | 16° | 25° | — | — |
| 1980 | 35° | 28° | 32° | — | — |
| 1979 | 40° | 29° | 34° | — | — |
| 1978 | 39° | 30° | 35° | — | — |
| 1977 | 37° | 31° | 34° | — | — |
| 1976 | 42° | 29° | 35° | — | — |
| 1975 | — | 30° | — | — | — |
| 1974 | 42° | 34° | 38° | — | — |
| 1973 | 29° | 27° | 28° | — | — |
| 1972 | 30° | 13° | 21° | — | — |
| 1971 | 62° | 37° | 50° | 3.2" | — |
55 years of data from CHICAGO GRANT PARK