Weather on December 17
Joliet, IL
55 Years of Data
Avg High
35°F
Avg Low
20°F
Warmest
1984
46°F avg
Coldest
1989
-1°F avg
About This Date
December 17th 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 17th was in 1984 (46°F average), while the coldest was 1989 (-1°F) — a 47°F range across recorded history. Precipitation has occurred on 35% of recorded December 17th dates, with snow falling 11% of the time (heaviest snowfall: 3.5"). The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
Planning for December 17th in Joliet, IL? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Warming Trend
2.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 42° | 33° | 37° | — | — |
| 2024 | 54° | 32° | 43° | — | — |
| 2023 | 43° | 38° | 40° | 1.52" | — |
| 2022 | 31° | 23° | 27° | — | 0.2" |
| 2021 | 46° | 25° | 35° | — | — |
| 2020 | 32° | 27° | 29° | — | — |
| 2019 | 28° | 17° | 23° | — | — |
| 2018 | 46° | 26° | 36° | — | — |
| 2017 | 48° | 30° | 39° | — | — |
| 2016 | 23° | 13° | 18° | 0.46" | — |
| 2015 | 55° | 30° | 43° | 0.05" | — |
| 2014 | 45° | 24° | 34° | 0.05" | — |
| 2013 | 21° | 14° | 18° | 0.05" | 0.5" |
| 2012 | 48° | 36° | 42° | 0.03" | — |
| 2011 | 33° | 26° | 30° | 0.1" | — |
| 2010 | 26° | 10° | 18° | 0.05" | 1" |
| 2009 | 25° | 6° | 15° | — | — |
| 2008 | 21° | 8° | 15° | 0.97" | 3.5" |
| 2007 | 24° | 17° | 21° | — | — |
| 2006 | 52° | 35° | 43° | 0.05" | — |
| 2005 | 25° | 13° | 19° | — | — |
| 2004 | 45° | 16° | 30° | — | — |
| 2003 | 43° | 21° | 32° | 0.03" | 0.1" |
| 2002 | 34° | 28° | 31° | — | — |
| 2001 | 48° | 43° | 45° | 0.69" | — |
| 2000 | 38° | -6° | 16° | — | — |
| 1999 | 26° | 19° | 23° | 0.03" | — |
| 1998 | 41° | 27° | 34° | — | — |
| 1997 | 47° | 25° | 36° | — | — |
| 1996 | 32° | 26° | 29° | — | — |
| 1995 | 37° | 22° | 29° | — | — |
| 1994 | 38° | 33° | 35° | 0.89" | — |
| 1993 | 41° | 33° | 37° | — | — |
| 1992 | 36° | 31° | 33° | — | — |
| 1991 | 39° | 16° | 27° | — | — |
| 1990 | 36° | 34° | 35° | — | — |
| 1989coldest | 8° | -11° | -1° | — | — |
| 1988 | 21° | 4° | 12° | — | — |
| 1987 | 30° | 19° | 25° | — | — |
| 1986 | 42° | 35° | 39° | 0.03" | — |
| 1985 | 29° | 3° | 16° | — | — |
| 1984warmest | 62° | 31° | 46° | — | — |
| 1983 | 17° | 3° | 10° | — | 0.3" |
| 1982 | 33° | 25° | 29° | — | — |
| 1981 | 23° | 12° | 18° | 0.13" | — |
| 1980 | 35° | 26° | 31° | — | — |
| 1979 | 27° | -1° | 13° | 0.03" | — |
| 1978 | 37° | 18° | 27° | — | — |
| 1977 | 50° | 31° | 40° | 0.1" | — |
| 1976 | 37° | 22° | 29° | — | — |
| 1975 | 33° | 8° | 21° | 0.05" | — |
| 1973 | 25° | 3° | 14° | — | — |
| 1972 | 18° | -4° | 7° | — | — |
| 1971 | 37° | 17° | 27° | — | — |
54 years of data from JOLIET