Weather on December 21
Brockton, MA
55 Years of Data
Avg High
42°F
Avg Low
24°F
Warmest
2018
53°F avg
Coldest
1989
12°F avg
About This Date
December 21st in Brockton, MA typically brings chilly winter weather, with average highs around 42°F and lows near 24°F. Over 55 years of records, the warmest December 21st was in 2018 (53°F average), while the coldest was 1989 (12°F) — a 41°F range across recorded history. Precipitation has occurred on 35% of recorded December 21st dates, with snow falling 2% of the time (heaviest snowfall: 1.5"). The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Brockton, MA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 51° | 32° | 42° | — | — |
| 2024 | 32° | 19° | 26° | 0.03" | — |
| 2023 | 41° | 28° | 35° | — | — |
| 2022 | 44° | 26° | 35° | — | — |
| 2021 | 47° | 30° | 38° | — | — |
| 2020 | 40° | 29° | 34° | — | — |
| 2019 | 35° | 16° | 25° | — | — |
| 2018warmest | 64° | 42° | 53° | 3.07" | — |
| 2017 | 36° | 22° | 29° | — | — |
| 2016 | 41° | 24° | 33° | — | — |
| 2015 | 55° | 26° | 41° | — | — |
| 2014 | 35° | 32° | 34° | 0.1" | — |
| 2013 | 59° | 44° | 52° | — | — |
| 2012 | 55° | 37° | 46° | 1.83" | — |
| 2011 | 58° | 24° | 41° | 0.13" | — |
| 2010 | 41° | 25° | 33° | 0.05" | — |
| 2009 | 34° | 19° | 26° | — | — |
| 2008 | 31° | 24° | 27° | 1.73" | — |
| 2007 | 33° | 25° | 29° | — | — |
| 2006 | 50° | 34° | 42° | — | — |
| 2005 | 30° | 14° | 22° | — | — |
| 2004 | 32° | 4° | 18° | — | — |
| 2003 | 40° | 22° | 31° | — | — |
| 2002 | 48° | 32° | 40° | — | — |
| 2001 | 42° | 28° | 35° | — | — |
| 2000 | 36° | 18° | 27° | — | — |
| 1999 | 59° | 38° | 48° | 0.13" | — |
| 1998 | 54° | 34° | 44° | — | — |
| 1997 | 35° | 12° | 24° | — | — |
| 1996 | 36° | 15° | 25° | — | — |
| 1995 | 31° | 13° | 22° | 0.13" | 1.5" |
| 1994 | 56° | 26° | 41° | — | — |
| 1993 | 56° | 34° | 45° | 7.82" | — |
| 1992 | 35° | 21° | 28° | — | — |
| 1991 | 41° | 29° | 35° | 0.43" | — |
| 1990 | 50° | 30° | 40° | 0.25" | — |
| 1989coldest | 20° | 5° | 12° | — | — |
| 1988 | 57° | 34° | 45° | — | — |
| 1987 | 47° | 31° | 39° | — | — |
| 1986 | 37° | 21° | 29° | — | — |
| 1985 | 29° | 17° | 23° | — | — |
| 1984 | 38° | 24° | 31° | 1.27" | — |
| 1983 | 22° | 7° | 14° | — | — |
| 1982 | 38° | 26° | 32° | — | — |
| 1981 | 34° | 8° | 21° | — | — |
| 1980 | 27° | 1° | 14° | — | — |
| 1979 | 34° | 24° | 29° | — | — |
| 1978 | 46° | 28° | 37° | 1.24" | — |
| 1977 | 54° | 36° | 45° | 4.67" | — |
| 1976 | 47° | 12° | 29° | — | — |
| 1975 | 36° | 23° | 29° | 4.52" | — |
| 1974 | 40° | 29° | 34° | 0.03" | — |
| 1973 | 60° | 36° | 48° | 3.12" | — |
| 1972 | 33° | 22° | 27° | 0.38" | — |
| 1971 | 45° | 24° | 34° | — | — |
55 years of data from BROCKTON