Weather on December 9
Waterbury, CT
55 Years of Data
Avg High
42°F
Avg Low
25°F
Warmest
1991
54°F avg
Coldest
1989
14°F avg
About This Date
December 9th in Waterbury, CT typically brings chilly winter weather, with average highs around 42°F and lows near 25°F. Over 54 years of records, the warmest December 9th was in 1991 (54°F average), while the coldest was 1989 (14°F) — a 40°F range across recorded history. Precipitation has occurred on 31% of recorded December 9th dates, with snow falling 4% of the time (heaviest snowfall: 2"). The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
Planning for December 9th in Waterbury, CT? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 40° | 14° | 27° | — | — |
| 2024 | 51° | 29° | 40° | 0.76" | — |
| 2023 | 58° | 32° | 45° | — | — |
| 2022 | 50° | 35° | 43° | — | — |
| 2021 | 38° | 29° | 34° | — | — |
| 2020 | 31° | 19° | 25° | — | — |
| 2019 | 39° | 19° | 29° | — | — |
| 2018 | 32° | 16° | 24° | — | — |
| 2017 | 39° | 27° | 33° | — | — |
| 2016 | 42° | 28° | 35° | — | — |
| 2015 | 47° | 29° | 38° | — | — |
| 2014 | 33° | 21° | 27° | 0.61" | — |
| 2013 | 33° | 26° | 30° | — | — |
| 2012 | 50° | 42° | 46° | 0.38" | — |
| 2011 | 52° | 28° | 40° | — | — |
| 2010 | 30° | 18° | 24° | — | — |
| 2009 | 49° | 34° | 41° | 3.68" | — |
| 2008 | 56° | 24° | 40° | — | — |
| 2007 | 37° | 24° | 31° | 0.86" | — |
| 2006 | 39° | 26° | 33° | — | — |
| 2005 | 37° | 26° | 32° | 1.65" | — |
| 2004 | 45° | 28° | 36° | 0.58" | — |
| 2003 | 34° | 24° | 29° | — | — |
| 2002 | 27° | 10° | 18° | — | — |
| 2001 | 40° | 24° | 32° | 0.91" | — |
| 2000 | 31° | 8° | 19° | — | — |
| 1999 | 48° | 24° | 36° | — | — |
| 1997 | 44° | 23° | 34° | — | — |
| 1996 | 41° | 22° | 31° | — | — |
| 1995 | 30° | 21° | 26° | 0.89" | 2" |
| 1994 | 39° | 22° | 30° | — | — |
| 1993 | 45° | 21° | 33° | — | — |
| 1992 | 32° | 14° | 23° | — | — |
| 1991warmest | 61° | 48° | 54° | 0.05" | — |
| 1990 | 45° | 30° | 37° | — | — |
| 1989coldest | 22° | 6° | 14° | — | — |
| 1988 | 33° | 23° | 28° | — | — |
| 1987 | 56° | 33° | 44° | — | — |
| 1986 | 35° | 24° | 30° | 0.99" | 0.5" |
| 1985 | 40° | 32° | 36° | — | — |
| 1984 | 49° | 25° | 37° | — | — |
| 1983 | 43° | 23° | 33° | — | — |
| 1982 | 41° | 26° | 34° | — | — |
| 1981 | 37° | 27° | 32° | — | — |
| 1980 | 61° | 38° | 49° | — | — |
| 1979 | 38° | 20° | 29° | — | — |
| 1978 | 53° | 38° | 45° | 3.76" | — |
| 1977 | 40° | 20° | 30° | 0.76" | — |
| 1976 | 25° | 7° | 16° | — | — |
| 1975 | 36° | 18° | 27° | 0.05" | — |
| 1974 | 55° | 38° | 46° | 2.54" | — |
| 1973 | 56° | 33° | 44° | 4.42" | — |
| 1972 | 43° | 28° | 35° | 2.46" | — |
| 1971 | 44° | 34° | 39° | — | — |
54 years of data from MT CARMEL