Weather on December 15
New Haven, CT
55 Years of Data
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" | — |
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.