Weather on December 31
Boston, MA
55 Years of Data
Avg High
39°F
Avg Low
25°F
Warmest
2022
49°F avg
Coldest
2017
9°F avg
About This Date
December 31st in Boston, MA typically brings cold winter weather, with average highs around 39°F and lows near 25°F. Over 55 years of records, the warmest December 31st was in 2022 (49°F average), while the coldest was 2017 (9°F) — a 40°F range across recorded history. Precipitation has occurred on 45% of recorded December 31st dates, with snow falling 15% of the time (heaviest snowfall: 6.5"). The last decade has been 8.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.1°F warmer on this date compared to 20-30 years ago.
Planning for December 31st in Boston, MA? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 34° | 24° | 29° | — | — |
| 2024 | 52° | 38° | 45° | — | — |
| 2023 | 41° | 33° | 37° | — | — |
| 2022warmest | 54° | 44° | 49° | 0.89" | — |
| 2021 | 46° | 40° | 43° | — | — |
| 2020 | 45° | 33° | 39° | 0.25" | — |
| 2019 | 44° | 37° | 41° | 0.69" | — |
| 2018 | 45° | 31° | 38° | 1.04" | — |
| 2017coldest | 13° | 4° | 9° | — | — |
| 2016 | 42° | 26° | 34° | 0.18" | — |
| 2015 | 47° | 33° | 40° | 0.2" | — |
| 2014 | 30° | 20° | 25° | — | — |
| 2013 | 26° | 14° | 20° | — | — |
| 2012 | 34° | 21° | 27° | — | — |
| 2011 | 40° | 34° | 37° | 0.03" | — |
| 2010 | 50° | 28° | 39° | — | — |
| 2009 | 32° | 24° | 28° | 0.3" | 2.2" |
| 2008 | 28° | 9° | 18° | 1.02" | 6.5" |
| 2007 | 41° | 30° | 36° | 1.19" | — |
| 2006 | 40° | 27° | 33° | — | — |
| 2005 | 34° | 23° | 28° | 0.13" | 0.1" |
| 2004 | 47° | 27° | 37° | — | — |
| 2003 | 46° | 38° | 42° | — | — |
| 2002 | 40° | 29° | 34° | 0.08" | — |
| 2001 | 33° | 23° | 28° | — | — |
| 2000 | 32° | 25° | 28° | — | 0.5" |
| 1999 | 35° | 27° | 31° | — | — |
| 1998 | 23° | 11° | 17° | — | — |
| 1997 | 35° | 13° | 24° | — | — |
| 1996 | 23° | 5° | 14° | 0.08" | 1.6" |
| 1995 | 40° | 33° | 36° | — | — |
| 1994 | 42° | 21° | 32° | 0.05" | — |
| 1993 | 32° | 13° | 22° | — | — |
| 1992 | 53° | 37° | 45° | 0.66" | — |
| 1991 | 37° | 21° | 29° | — | — |
| 1990 | 58° | 20° | 39° | 0.13" | — |
| 1989 | 53° | 27° | 40° | 0.58" | — |
| 1988 | 42° | 28° | 35° | — | — |
| 1987 | 40° | 14° | 27° | 0.03" | — |
| 1986 | 42° | 29° | 35° | 0.08" | 0.2" |
| 1985 | 49° | 25° | 37° | 0.03" | — |
| 1984 | 42° | 26° | 34° | — | — |
| 1983 | 31° | 15° | 23° | — | — |
| 1982 | 40° | 30° | 35° | — | — |
| 1981 | 35° | 24° | 30° | — | — |
| 1980 | 24° | 10° | 17° | — | — |
| 1979 | 41° | 26° | 34° | — | — |
| 1978 | 42° | 32° | 37° | — | — |
| 1977 | 45° | 31° | 38° | — | — |
| 1976 | 22° | 16° | 19° | — | — |
| 1975 | 47° | 35° | 41° | 0.15" | — |
| 1974 | 43° | 32° | 37° | 0.15" | 0.3" |
| 1973 | 35° | 32° | 34° | 0.38" | — |
| 1972 | 39° | 27° | 33° | 1.8" | — |
| 1971 | 23° | 17° | 20° | 0.05" | 0.3" |
55 years of data from BOSTON