Weather on December 20
New Haven, CT
55 Years of Data
Avg High
39°F
Avg Low
26°F
Warmest
2002
49°F avg
Coldest
2004
14°F avg
About This Date
December 20th in New Haven, CT typically brings cold winter weather, with average highs around 39°F and lows near 26°F. Over 54 years of records, the warmest December 20th was in 2002 (49°F average), while the coldest was 2004 (14°F) — a 35°F range across recorded history. Precipitation has occurred on 37% of recorded December 20th dates, with snow falling 4% 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 New Haven, CT? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Warming Trend
0.7°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 | 35° | 23° | 29° | 0.18" | — |
| 2019 | 34° | 19° | 27° | — | — |
| 2018 | 50° | 22° | 36° | 0.25" | — |
| 2017 | 49° | 31° | 40° | — | — |
| 2016 | 34° | 14° | 24° | — | — |
| 2015 | 42° | 31° | 37° | — | — |
| 2014 | 35° | 26° | 31° | — | — |
| 2013 | 46° | 30° | 38° | — | — |
| 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° | — | — |
| 2004coldest | 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 | 39° | 20° | 29° | — | — |
| 1990 | 47° | 30° | 38° | — | — |
| 1989 | 29° | 19° | 24° | — | — |
| 1988 | 46° | 28° | 37° | — | — |
| 1987 | 46° | 37° | 42° | 0.58" | — |
| 1986 | 48° | 39° | 44° | — | — |
| 1985 | 28° | 15° | 22° | — | — |
| 1984 | 49° | 34° | 41° | 0.13" | — |
| 1983 | 23° | 12° | 18° | — | — |
| 1982 | 31° | 26° | 28° | 0.05" | — |
| 1981 | 27° | 18° | 22° | — | — |
| 1980 | 27° | 10° | 18° | — | — |
| 1979 | 33° | 17° | 25° | 0.25" | — |
| 1978 | 48° | 33° | 41° | — | — |
| 1977 | 37° | 34° | 35° | — | — |
| 1976 | 46° | 34° | 40° | 0.94" | — |
| 1975 | 24° | 14° | 19° | 1.57" | 4.2" |
| 1974 | 41° | 33° | 37° | — | — |
| 1973 | 36° | 19° | 27° | 3.3" | — |
| 1972 | 41° | 38° | 39° | — | — |
| 1971 | 36° | 28° | 32° | 0.18" | — |
54 years of data from NEW HAVEN