Weather on November 21
Boston, MA
55 Years of Data
Avg High
49°F
Avg Low
35°F
Warmest
1991
59°F avg
Coldest
1987
25°F avg
About This Date
November 21st in Boston, MA typically brings chilly fall weather, with average highs around 49°F and lows near 35°F. Over 55 years of records, the warmest November 21st was in 1991 (59°F average), while the coldest was 1987 (25°F) — a 34°F range across recorded history. Precipitation has occurred on 33% of recorded November 21st dates, with snow falling 4% of the time (heaviest snowfall: 2.1"). The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
Planning for November 21st in Boston, MA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 48° | 33° | 41° | — | — |
| 2024 | 48° | 45° | 46° | 1.73" | — |
| 2023 | 42° | 27° | 35° | 0.08" | — |
| 2022 | 39° | 25° | 32° | — | — |
| 2021 | 54° | 39° | 46° | — | — |
| 2020 | 62° | 42° | 52° | — | — |
| 2019 | 51° | 36° | 43° | — | — |
| 2018 | 43° | 24° | 34° | — | — |
| 2017 | 59° | 35° | 47° | — | — |
| 2016 | 38° | 30° | 34° | — | — |
| 2015 | 48° | 38° | 43° | — | — |
| 2014 | 36° | 27° | 32° | — | — |
| 2013 | 48° | 29° | 39° | — | — |
| 2012 | 49° | 38° | 43° | — | — |
| 2011 | 59° | 36° | 47° | — | — |
| 2010 | 39° | 32° | 36° | — | — |
| 2009 | 58° | 44° | 51° | — | — |
| 2008 | 35° | 23° | 29° | — | — |
| 2007 | 46° | 34° | 40° | — | — |
| 2006 | 42° | 32° | 37° | — | — |
| 2005 | 58° | 41° | 49° | 0.41" | — |
| 2004 | 46° | 42° | 44° | 0.03" | — |
| 2003 | 50° | 43° | 46° | 0.18" | — |
| 2002 | 50° | 35° | 43° | — | — |
| 2001 | 43° | 32° | 37° | — | — |
| 2000 | 42° | 33° | 38° | — | — |
| 1999 | 59° | 47° | 53° | — | — |
| 1998 | 49° | 40° | 44° | — | — |
| 1997 | 56° | 31° | 43° | — | — |
| 1996 | 42° | 33° | 38° | — | — |
| 1995 | 49° | 40° | 44° | 0.03" | — |
| 1994 | 59° | 34° | 46° | 0.66" | — |
| 1993 | 45° | 32° | 38° | — | — |
| 1992 | 59° | 34° | 46° | 0.1" | — |
| 1991warmest | 66° | 52° | 59° | 0.56" | — |
| 1990 | 50° | 36° | 43° | — | — |
| 1989 | 47° | 22° | 34° | — | — |
| 1988 | 50° | 37° | 44° | — | — |
| 1987coldest | 35° | 16° | 25° | — | — |
| 1986 | 51° | 32° | 42° | 3.38" | — |
| 1985 | 57° | 37° | 47° | — | — |
| 1984 | 42° | 28° | 35° | — | — |
| 1983 | 57° | 47° | 52° | 1.17" | — |
| 1982 | 57° | 46° | 52° | — | — |
| 1981 | 45° | 40° | 42° | 0.23" | — |
| 1980 | 50° | 31° | 40° | — | — |
| 1979 | 57° | 44° | 51° | — | — |
| 1978 | 35° | 29° | 32° | 0.66" | 2.1" |
| 1977 | 56° | 36° | 46° | 0.25" | — |
| 1976 | 39° | 30° | 35° | — | — |
| 1975 | 68° | 48° | 58° | 2.26" | — |
| 1974 | 53° | 33° | 43° | 0.86" | — |
| 1973 | 50° | 31° | 40° | 0.03" | — |
| 1972 | 41° | 26° | 34° | — | — |
| 1971 | 44° | 35° | 40° | 2.21" | 0.7" |
55 years of data from BOSTON