Weather on December 31
Joliet, IL
55 Years of Data
Avg High
35°F
Avg Low
20°F
Warmest
2006
49°F avg
Coldest
1976
1°F avg
About This Date
December 31st in Joliet, IL typically brings cold winter weather, with average highs around 35°F and lows near 20°F. Over 54 years of records, the warmest December 31st was in 2006 (49°F average), while the coldest was 1976 (1°F) — a 48°F range across recorded history. Precipitation has occurred on 35% of recorded December 31st dates, with snow falling 13% of the time (heaviest snowfall: 1.5"). The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
Planning for December 31st in Joliet, IL? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 37° | 26° | 31° | — | — |
| 2024 | 42° | 33° | 38° | 0.3" | — |
| 2023 | 39° | 28° | 34° | — | — |
| 2022 | 47° | 27° | 37° | — | — |
| 2021 | 42° | 31° | 36° | — | — |
| 2020 | 37° | 24° | 31° | — | — |
| 2019 | 33° | 26° | 30° | 0.03" | 0.3" |
| 2018 | 40° | 19° | 29° | — | — |
| 2017 | 14° | -3° | 6° | — | — |
| 2016 | 40° | 23° | 31° | — | — |
| 2015 | 28° | 23° | 26° | 0.38" | 1" |
| 2014 | 19° | 4° | 11° | — | — |
| 2013 | 12° | 1° | 7° | 0.08" | 1" |
| 2012 | 34° | 15° | 24° | — | — |
| 2011 | 46° | 30° | 38° | 0.28" | — |
| 2010 | 49° | 38° | 43° | 0.25" | — |
| 2009 | 32° | 22° | 27° | 0.28" | 1" |
| 2008 | 42° | 17° | 30° | — | — |
| 2007 | 32° | 24° | 28° | — | — |
| 2006warmest | 52° | 46° | 49° | 0.2" | — |
| 2005 | 38° | 32° | 35° | 0.91" | — |
| 2004 | 58° | 34° | 46° | 0.1" | — |
| 2003 | 43° | 25° | 34° | — | — |
| 2002 | 61° | 33° | 47° | — | — |
| 2001 | 19° | 5° | 12° | — | — |
| 2000 | 31° | 14° | 22° | — | — |
| 1999 | 41° | 30° | 36° | — | — |
| 1998 | 12° | 1° | 7° | 0.23" | 1.5" |
| 1997 | 25° | 16° | 20° | 0.03" | — |
| 1996 | 33° | 24° | 29° | — | — |
| 1995 | 37° | 19° | 28° | 0.3" | — |
| 1994 | 37° | 25° | 31° | — | — |
| 1993 | 29° | 29° | 29° | 0.03" | 0.1" |
| 1992 | 52° | 27° | 39° | 2.92" | — |
| 1991 | 36° | 30° | 33° | — | — |
| 1990 | 12° | 1° | 7° | 0.25" | — |
| 1989 | 33° | 29° | 31° | 0.08" | — |
| 1988 | 31° | 16° | 23° | — | — |
| 1987 | 37° | 22° | 29° | — | — |
| 1986 | 42° | 30° | 36° | — | — |
| 1985 | 39° | 8° | 24° | — | — |
| 1984 | 45° | 25° | 35° | 0.08" | — |
| 1983 | 11° | 10° | 10° | — | 0.3" |
| 1982 | 31° | 16° | 23° | — | — |
| 1981 | 35° | 3° | 19° | — | — |
| 1980 | 35° | 29° | 32° | — | — |
| 1979 | 45° | 25° | 35° | — | — |
| 1978 | 37° | 23° | 30° | 0.41" | — |
| 1977 | 35° | 15° | 25° | — | — |
| 1976coldest | 15° | -14° | 1° | — | — |
| 1975 | 35° | 26° | 31° | — | — |
| 1973 | 16° | 1° | 8° | — | — |
| 1972 | 44° | 17° | 31° | — | — |
| 1971 | 37° | 25° | 31° | — | — |
54 years of data from JOLIET