Weather on December 15
New Haven, CT
55 Years of Data
Avg High
42°F
Avg Low
29°F
Warmest
2015
54°F avg
Coldest
2005
21°F avg
About This Date
December 15th in New Haven, CT typically brings chilly winter weather, with average highs around 42°F and lows near 29°F. Over 54 years of records, the warmest December 15th was in 2015 (54°F average), while the coldest was 2005 (21°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 39% of December 15th dates historically, with the wettest December 15th recording 3.68" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for December 15th in New Haven, CT? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| 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 | 40° | 27° | 34° | — | — |
| 2019 | 48° | 36° | 42° | — | — |
| 2018 | 53° | 45° | 49° | 0.08" | — |
| 2017 | 28° | 13° | 21° | 0.2" | — |
| 2016 | 34° | 20° | 27° | — | — |
| 2015warmest | 61° | 47° | 54° | 0.03" | — |
| 2014 | 48° | 28° | 38° | — | — |
| 2013 | 36° | 22° | 29° | 1.78" | — |
| 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° | — | — |
| 2005coldest | 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" | — |
| 1989 | 30° | 14° | 22° | — | — |
| 1988 | 45° | 36° | 40° | — | — |
| 1987 | 43° | 33° | 38° | 0.43" | — |
| 1986 | 45° | 13° | 29° | — | — |
| 1985 | 30° | 18° | 24° | — | — |
| 1984 | 39° | 32° | 36° | 0.2" | — |
| 1983 | 51° | 44° | 48° | — | — |
| 1982 | 44° | 28° | 36° | — | — |
| 1981 | 35° | 30° | 33° | 3.68" | — |
| 1980 | 31° | 18° | 24° | — | — |
| 1979 | 40° | 27° | 33° | — | — |
| 1978 | 43° | 30° | 36° | — | — |
| 1977 | 51° | 35° | 43° | 2.67" | — |
| 1976 | 49° | 32° | 40° | — | — |
| 1975 | 60° | 47° | 53° | 0.03" | — |
| 1974 | 38° | 31° | 34° | — | — |
| 1973 | 49° | 33° | 41° | — | — |
| 1972 | 41° | 31° | 36° | — | — |
| 1971 | 40° | 33° | 36° | 0.41" | — |
54 years of data from NEW HAVEN