Weather on December 15
Waterbury, CT
55 Years of Data
Avg High
42°F
Avg Low
27°F
Warmest
2015
54°F avg
Coldest
1989
16°F avg
About This Date
December 15th in Waterbury, CT typically brings chilly winter weather, with average highs around 42°F and lows near 27°F. Over 54 years of records, the warmest December 15th was in 2015 (54°F average), while the coldest was 1989 (16°F) — a 38°F range across recorded history. Precipitation has occurred on 41% of recorded December 15th dates, with snow falling 9% of the time (heaviest snowfall: 3"). The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for December 15th in Waterbury, CT? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 30° | 19° | 25° | — | — |
| 2024 | 40° | 20° | 30° | — | — |
| 2023 | 57° | 35° | 46° | — | — |
| 2022 | 44° | 30° | 37° | 0.2" | — |
| 2021 | 52° | 25° | 39° | 0.1" | — |
| 2020 | 42° | 28° | 35° | 0.25" | — |
| 2019 | 54° | 42° | 48° | — | — |
| 2018 | 46° | 30° | 38° | — | — |
| 2017 | 29° | 8° | 18° | 0.05" | 0.5" |
| 2016 | 42° | 19° | 31° | — | — |
| 2015warmest | 57° | 50° | 54° | 1.5" | — |
| 2014 | 45° | 27° | 36° | — | — |
| 2013 | 32° | 15° | 24° | 1.73" | 3" |
| 2012 | 48° | 25° | 37° | — | — |
| 2011 | 54° | 46° | 50° | 0.03" | — |
| 2010 | 28° | 19° | 24° | — | — |
| 2009 | 51° | 40° | 45° | — | — |
| 2008 | 58° | 43° | 50° | 0.1" | — |
| 2007 | 33° | 23° | 28° | — | — |
| 2006 | 49° | 35° | 42° | — | — |
| 2005 | 32° | 11° | 21° | 0.2" | — |
| 2004 | 30° | 18° | 24° | — | — |
| 2003 | 38° | 31° | 34° | 0.79" | — |
| 2002 | 45° | 39° | 42° | — | — |
| 2001 | 57° | 32° | 45° | — | — |
| 2000 | 34° | 22° | 28° | — | — |
| 1999 | 43° | 40° | 41° | 0.56" | — |
| 1997 | 40° | 10° | 25° | — | — |
| 1996 | 39° | 35° | 37° | 0.79" | — |
| 1995 | 34° | 18° | 26° | 0.28" | — |
| 1994 | 38° | 29° | 33° | — | — |
| 1993 | 49° | 40° | 44° | — | — |
| 1992 | 36° | 16° | 26° | — | — |
| 1991 | 46° | 36° | 41° | 0.1" | — |
| 1990 | 33° | 15° | 24° | 0.97" | — |
| 1989coldest | 27° | 6° | 16° | — | — |
| 1988 | 45° | 28° | 36° | — | — |
| 1987 | 41° | 29° | 35° | 0.66" | 0.3" |
| 1986 | 40° | 21° | 30° | — | — |
| 1985 | 30° | 18° | 24° | — | — |
| 1984 | 35° | 31° | 33° | 0.1" | — |
| 1983 | 52° | 49° | 50° | 0.13" | — |
| 1982 | 42° | 22° | 32° | — | — |
| 1981 | 35° | 30° | 33° | 3.68" | — |
| 1980 | 27° | 8° | 17° | — | — |
| 1979 | 38° | 18° | 28° | — | — |
| 1978 | 42° | 22° | 32° | — | — |
| 1977 | 51° | 32° | 42° | 2.03" | — |
| 1976 | 49° | 23° | 36° | — | — |
| 1975 | 58° | 41° | 49° | — | — |
| 1974 | 38° | 25° | 31° | — | — |
| 1973 | 48° | 28° | 38° | — | — |
| 1972 | 42° | 27° | 34° | 0.3" | 1.5" |
| 1971 | 38° | 31° | 34° | 0.53" | 0.9" |
54 years of data from MT CARMEL