Weather on December 20
Waterbury, CT
55 Years of Data
Avg High
38°F
Avg Low
23°F
Warmest
2002
49°F avg
Coldest
1980
11°F avg
About This Date
December 20th in Waterbury, CT typically brings cold winter weather, with average highs around 38°F and lows near 23°F. Over 54 years of records, the warmest December 20th was in 2002 (49°F average), while the coldest was 1980 (11°F) — a 38°F range across recorded history. Precipitation has occurred on 33% of recorded December 20th dates, with snow falling 7% of the time (heaviest snowfall: 9"). 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 December 20th in Waterbury, CT? 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 | 42° | 33° | 38° | — | — |
| 2024 | 39° | 32° | 36° | — | — |
| 2023 | 48° | 31° | 40° | — | — |
| 2022 | 42° | 30° | 36° | — | — |
| 2021 | 40° | 23° | 32° | — | — |
| 2020 | 37° | 19° | 28° | — | — |
| 2019 | 24° | 14° | 19° | — | — |
| 2018 | 39° | 22° | 30° | — | — |
| 2017 | 53° | 35° | 44° | — | — |
| 2016 | 39° | 9° | 24° | — | — |
| 2015 | 41° | 28° | 35° | — | — |
| 2014 | 39° | 24° | 32° | — | — |
| 2013 | 46° | 24° | 35° | — | — |
| 2012 | 46° | 29° | 38° | 0.08" | — |
| 2011 | 47° | 35° | 41° | — | — |
| 2010 | 37° | 28° | 33° | — | — |
| 2009 | 31° | 21° | 26° | 0.43" | — |
| 2008 | 24° | 18° | 21° | — | — |
| 2007 | 43° | 30° | 37° | — | — |
| 2006 | 44° | 22° | 33° | — | — |
| 2005 | 33° | 22° | 27° | — | — |
| 2004 | 21° | 7° | 14° | 0.1" | — |
| 2003 | 38° | 26° | 32° | — | — |
| 2002warmest | 57° | 41° | 49° | 2.24" | — |
| 2001 | 49° | 33° | 41° | — | — |
| 2000 | 33° | 14° | 24° | 0.33" | — |
| 1999 | 57° | 26° | 42° | 2.41" | — |
| 1997 | 47° | 31° | 39° | 0.3" | — |
| 1996 | 40° | 21° | 30° | 0.23" | — |
| 1995 | 23° | 16° | 19° | 1.42" | 9" |
| 1994 | 44° | 19° | 32° | — | — |
| 1993 | 38° | 27° | 32° | — | — |
| 1992 | 46° | 38° | 42° | 0.1" | — |
| 1991 | 37° | 20° | 28° | — | — |
| 1990 | 45° | 26° | 35° | — | — |
| 1989 | 27° | 12° | 19° | — | — |
| 1988 | 48° | 22° | 35° | — | — |
| 1987 | 43° | 26° | 34° | 0.76" | 0.3" |
| 1986 | 42° | 34° | 38° | — | — |
| 1985 | 28° | 10° | 19° | — | — |
| 1984 | 47° | 29° | 38° | 0.13" | — |
| 1983 | 22° | 11° | 16° | — | — |
| 1982 | 34° | 26° | 30° | 0.05" | 2" |
| 1981 | 27° | 18° | 22° | — | — |
| 1980coldest | 22° | 0° | 11° | — | — |
| 1979 | 29° | 10° | 19° | — | — |
| 1978 | 32° | 22° | 27° | — | — |
| 1977 | 36° | 31° | 33° | — | — |
| 1976 | 47° | 27° | 37° | 0.08" | — |
| 1975 | 21° | 8° | 15° | 0.2" | 1" |
| 1974 | 44° | 29° | 36° | — | — |
| 1973 | 32° | 14° | 23° | 0.53" | — |
| 1972 | 39° | 32° | 36° | 0.97" | — |
| 1971 | 30° | 26° | 28° | 0.08" | — |
54 years of data from MT CARMEL