Weather on December 15
Boston, MA
55 Years of Data
Avg High
42°F
Avg Low
29°F
Warmest
1975
57°F avg
Coldest
2025
19°F avg
About This Date
December 15th in Boston, MA typically brings chilly winter weather, with average highs around 42°F and lows near 29°F. Over 55 years of records, the warmest December 15th was in 1975 (57°F average), while the coldest was 2025 (19°F) — a 38°F range across recorded history. Precipitation has occurred on 36% of recorded December 15th dates, with snow falling 13% of the time (heaviest snowfall: 1.4"). 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 15th in Boston, MA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025coldest | 25° | 14° | 19° | — | — |
| 2024 | 36° | 21° | 29° | — | — |
| 2023 | 56° | 32° | 44° | — | — |
| 2022 | 44° | 32° | 38° | 0.08" | — |
| 2021 | 45° | 32° | 38° | 0.05" | — |
| 2020 | 36° | 23° | 30° | — | — |
| 2019 | 55° | 34° | 44° | — | — |
| 2018 | 55° | 40° | 47° | — | — |
| 2017 | 27° | 17° | 22° | — | — |
| 2016 | 32° | 14° | 23° | — | — |
| 2015 | 61° | 48° | 54° | 0.48" | — |
| 2014 | 42° | 32° | 37° | — | — |
| 2013 | 38° | 23° | 31° | 1.63" | 1" |
| 2012 | 40° | 33° | 36° | — | — |
| 2011 | 54° | 38° | 46° | 0.13" | — |
| 2010 | 23° | 18° | 20° | — | — |
| 2009 | 48° | 38° | 43° | — | — |
| 2008 | 63° | 43° | 53° | — | — |
| 2007 | 34° | 17° | 25° | — | — |
| 2006 | 54° | 43° | 48° | — | — |
| 2005 | 31° | 13° | 22° | — | — |
| 2004 | 28° | 18° | 23° | — | — |
| 2003 | 41° | 30° | 36° | 2.11" | — |
| 2002 | 45° | 36° | 40° | — | — |
| 2001 | 47° | 32° | 39° | 0.13" | — |
| 2000 | 35° | 23° | 29° | — | — |
| 1999 | 45° | 42° | 43° | 0.58" | — |
| 1998 | 52° | 29° | 40° | — | — |
| 1997 | 37° | 19° | 28° | — | — |
| 1996 | 42° | 38° | 40° | 0.1" | — |
| 1995 | 37° | 24° | 31° | 0.18" | 0.2" |
| 1994 | 37° | 27° | 32° | — | — |
| 1993 | 45° | 41° | 43° | 0.13" | — |
| 1992 | 40° | 29° | 34° | — | — |
| 1991 | 42° | 30° | 36° | — | — |
| 1990 | 51° | 25° | 38° | 1.07" | — |
| 1989 | 30° | 15° | 23° | 0.03" | 0.2" |
| 1988 | 48° | 24° | 36° | — | — |
| 1987 | 42° | 32° | 37° | 1.93" | 0.2" |
| 1986 | 43° | 30° | 36° | — | — |
| 1985 | 31° | 20° | 25° | — | — |
| 1984 | 38° | 27° | 32° | 0.1" | 0.1" |
| 1983 | 57° | 47° | 52° | 0.18" | — |
| 1982 | 49° | 35° | 42° | — | — |
| 1981 | 38° | 32° | 35° | 3.84" | 0.4" |
| 1980 | 29° | 14° | 21° | — | — |
| 1979 | 33° | 21° | 27° | — | — |
| 1978 | 41° | 28° | 35° | — | — |
| 1977 | 50° | 36° | 43° | 0.36" | — |
| 1976 | 52° | 35° | 43° | — | — |
| 1975warmest | 66° | 48° | 57° | — | — |
| 1974 | 37° | 30° | 34° | — | — |
| 1973 | 44° | 33° | 39° | — | — |
| 1972 | 34° | 27° | 30° | 1.3" | 1.4" |
| 1971 | 47° | 34° | 40° | 0.76" | — |
55 years of data from BOSTON