Weather on December 20
New Haven, CT
55 Years of Data
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.
| 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" | — |
New Haven, CT Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
New Haven, CT Monthly Precipitation
Average rainfall and snowfall per month, in inches.
New Haven, CT Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit New Haven, CT
New Haven, CT has no months that meet our "pleasant" threshold — every season has tradeoffs.