Weather on December 15
Cambridge, MA
55 Years of Data
Avg High
41°F
Avg Low
25°F
Warmest
2015
53°F avg
Coldest
1989
16°F avg
About This Date
December 15th in Cambridge, MA typically brings chilly winter weather, with average highs around 41°F and lows near 25°F. Over 55 years of records, the warmest December 15th was in 2015 (53°F average), while the coldest was 1989 (16°F) — a 37°F range across recorded history. Precipitation has occurred on 35% of recorded December 15th dates, with snow falling 9% of the time (heaviest snowfall: 6"). The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
Planning for December 15th in Cambridge, MA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 32° | 13° | 22° | 0.46" | 0.2" |
| 2024 | 29° | 15° | 22° | — | — |
| 2023 | 45° | 26° | 35° | — | — |
| 2022 | 38° | 22° | 30° | — | — |
| 2021 | 52° | 26° | 39° | — | — |
| 2020 | 37° | 27° | 32° | 0.18" | — |
| 2019 | 59° | 43° | 51° | 0.84" | — |
| 2018 | 48° | 26° | 37° | — | — |
| 2017 | 30° | 12° | 21° | — | — |
| 2016 | 42° | 23° | 33° | — | — |
| 2015warmest | 60° | 46° | 53° | 1.78" | — |
| 2014 | 44° | 28° | 36° | — | — |
| 2013 | 37° | 11° | 24° | 3.3" | 4.4" |
| 2012 | 47° | 25° | 36° | — | — |
| 2011 | 42° | 39° | 41° | — | — |
| 2010 | 28° | 17° | 23° | — | — |
| 2009 | 42° | 36° | 39° | — | — |
| 2008 | 47° | 25° | 36° | — | — |
| 2007 | 34° | 17° | 25° | — | — |
| 2006 | 56° | 42° | 49° | — | — |
| 2005 | 31° | 13° | 22° | — | — |
| 2004 | 28° | 18° | 23° | — | — |
| 2003 | 40° | 26° | 33° | 4.17" | — |
| 2002 | 46° | 35° | 41° | 3.53" | — |
| 2001 | 57° | 36° | 46° | 1.73" | — |
| 2000 | 40° | 21° | 30° | 1.52" | — |
| 1999 | 43° | 37° | 40° | 0.97" | — |
| 1998 | 43° | 24° | 33° | — | — |
| 1997 | 40° | 14° | 27° | — | — |
| 1996 | 43° | 37° | 40° | 0.89" | — |
| 1995 | 32° | 17° | 25° | 1.63" | 6" |
| 1994 | 29° | 25° | 27° | — | — |
| 1993 | 41° | 35° | 38° | 0.48" | — |
| 1992 | 31° | 27° | 29° | — | — |
| 1991 | 56° | 30° | 43° | 0.13" | — |
| 1990 | 30° | 17° | 24° | — | — |
| 1989coldest | 25° | 7° | 16° | — | — |
| 1988 | 36° | 34° | 35° | — | — |
| 1987 | 48° | 24° | 36° | — | — |
| 1986 | 35° | 23° | 29° | — | — |
| 1985 | 41° | 35° | 38° | — | — |
| 1984 | 48° | 30° | 39° | 0.03" | — |
| 1983 | 56° | 40° | 48° | 0.05" | — |
| 1982 | 38° | 14° | 26° | — | — |
| 1981 | 35° | 19° | 27° | 3.05" | 2" |
| 1980 | 34° | 9° | 21° | — | — |
| 1979 | 31° | 13° | 22° | — | — |
| 1978 | 37° | 23° | 30° | — | — |
| 1977 | 49° | 20° | 34° | 1.32" | — |
| 1976 | 35° | 3° | 19° | — | — |
| 1975 | 56° | 38° | 47° | — | — |
| 1974 | 41° | 22° | 31° | — | — |
| 1973 | 53° | — | — | — | — |
| 1972 | 44° | 23° | 34° | — | — |
| 1971 | 38° | 30° | 34° | 3.56" | 0.5" |
55 years of data from CHESTNUT HILL