Boston December 21 Weather Records

Daily averages and all-time records for weather in Boston, Massachusetts for the date of December 21.
December 21 All-Time Records
1893–2024
Highest temperature 65 °F 2018
Lowest temperature -5 °F 1942
Lowest daily high 11 °F 1955
Highest daily low 47 °F 1957
Most precipitation 1.91 inches 1946
Most snow 10.1 inches 1975
December 21 Average Weather
1991–2020 1
Average high 41.2 °F
Average low 27.9 °F
Chance precipitation 39.5%
Chance snow 13.6%
Boston December 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 36 24 0.00 0.0
2022 39 27 0.00 0.0
2021 44 30 0.00 0.0
2020 37 27 0.00 0.0
2019 35 22 0.00 0.0
2018 65 43 0.61 0.0
2017 33 26 0.00 0.0
2016 45 29 0.00 0.0
2015 53 32 0.00 0.0
2014 36 30 0.00 0.0
2013 54 41 0.00 0.0
2012 52 38 0.65 0.0
2011 58 32 0.09 0.0
2010 41 27 0.01 0.1
2009 32 20 0.00 0.0
2008 36 19 0.51 3.8
2007 29 24 0.00 0.0
2006 52 39 0.00 0.0
2005 30 20 0.00 0.0
2004 33 6 0.00 0.0
2003 36 22 0.00 0.0
2002 46 35 0.00 0.0
2001 39 31 0.00 0.0
2000 32 22 0.00 0.0
1999 59 36 0.09 0.0
1998 49 39 0.00 0.0
1997 33 20 0.00 0.0
1996 34 22 0.00 0.0
1995 32 19 0.05 0.7
1994 57 34 0.00 0.0
1993 56 37 1.53 0.0
1992 34 28 0.00 0.0
1991 42 31 0.10 0.0
1990 55 36 0.05 0.0
1989 20 11 0.00 0.0
1988 58 41 0.00 0.0
1987 46 34 0.00 0.0
1986 35 26 0.00 0.0
1985 29 22 0.01 0.1
1984 39 28 0.49 2.1
1983 25 9 0.00 0.0
1982 37 30 0.01 0.1
1981 32 14 0.00 0.0
1980 25 11 0.00 0.0
1979 35 23 0.00 0.0
1978 45 30 0.53 0.0
1977 55 40 1.34 0.0
1976 46 14 0.10 0.0
1975 35 19 0.66 10.1
1974 42 37 0.01 0.0
1973 61 31 0.70 0.0
1972 29 19 0.03 0.2
1971 45 30 0.00 0.0
1970 31 16 0.00 0.0
1969 36 23 0.00 0.0
1968 37 30 0.00 0.0
1967 44 34 0.00 0.0
1966 31 25 0.18 1.9
1965 34 16 0.00 0.0
1964 28 21 0.01 0.0
1963 18 3 0.00 0.0
1962 25 3 0.00 0.0
1961 35 27 0.00 0.0
1960 47 27 1.18 0.0
1959 29 14 0.00 0.0
1958 23 8 0.00 0.0
1957 62 47 0.85 0.0
1956 45 36 0.00 0.0
1955 11 -2 0.00 0.0
1954 32 23 0.46 6.0
1953 58 39 0.00 0.0
1952 40 32 0.00 0.0
1951 58 40 0.30 0.0
1950 35 18 0.00 0.0
1949 54 39 0.00 0.0
1948 35 21 0.00 0.0
1947 39 26 0.00 0.0
1946 46 35 1.91 0.0
1945 24 11 0.00 0.0
1944 36 18 0.00 0.0
1943 47 24 0.00 0.0
1942 13 -5 0.00 0.0
1941 21 7 0.00 0.0
1940 46 39 0.00 0.0
1939 43 32 0.00 0.0
1938 32 26 0.00 0.0
1937 29 22 0.00 0.0
1936 42 33 0.00 0.0
1935 24 10 0.00 0.0
1934 42 32 0.00 0.0
1933 37 23 0.20 0.0
1932 47 30 0.00 0.0
1931 43 18 0.00 0.0
1930 42 34 0.00 0.0
1929 31 23 0.00 0.0
1928 39 21 0.00 0.0
1927 40 34 0.00 0.0
1926 48 31 0.00 0.0
1925 43 36 0.70 0.0
1924 20 -1 0.00 0.0
1923 60 45 0.00 0.0
1922 36 25 0.00 0.0
1921 40 7 0.05 0.6
1920 38 26 0.00 0.0
1919 26 13 0.00 0.0
1918 58 41 0.00 0.0
1917 44 35 0.00 0.0
1916 35 30 0.23 0.6
1915 34 26 0.00 0.0
1914 41 24 0.92 3.5
1913 55 41 0.00 0.0
1912 42 28 0.00 0.0
1911 37 28 0.00 0.0
1910 34 18 0.05 2.0
1909 33 21 0.00 0.0
1908 45 30 0.00 0.0
1907 43 31 0.00 0.0
1906 45 36 0.07 0.0
1905 51 36 0.85 0.0
1904 31 15 0.00 0.0
1903 49 36 0.05 0.0
1902 53 27 0.50 0.0
1901 24 13 0.00 0.0
1900 37 28 0.00 0.0
1899 50 32 0.00 0.0
1898 38 31 0.03 0.0
1897 34 23 0.16 1.7
1896 34 21 0.00 0.0
1895 50 41 0.00 0.0
1894 49 28 0.00 0.0
1893 44 17 0.00 0.0
What's the all-time high for Boston on 12/21?
For the date of Dec 21, the highest temperature ever reached in Boston history is 65 °F which happened in 2018.
Highest Temperatures in Boston on December 21
Rank Temperature Year
1 65 °F 2018
2 62 °F 1957
3 61 °F 1973
4 60 °F 1923
5 59 °F 1999
6 58 °F 1918
6 58 °F 2011
6 58 °F 1988
6 58 °F 1953
6 58 °F 1951
What's the all-time low for Boston on 12/21?
For the date of Dec 21, the lowest temperature ever reached in Boston history is -5 °F which happened in 1942.
Lowest Temperatures in Boston on December 21
Rank Temperature Year
1 -5 °F 1942
2 -2 °F 1955
3 -1 °F 1924
4 3 °F 1962
4 3 °F 1963
6 6 °F 2004
7 7 °F 1941
7 7 °F 1921
9 8 °F 1958
10 9 °F 1983
Lowest High Temperatures in Boston on December 21
Rank Temperature Year
1 11 °F 1955
2 13 °F 1942
3 18 °F 1963
4 20 °F 1924
4 20 °F 1989
6 21 °F 1941
7 23 °F 1958
8 24 °F 1935
8 24 °F 1901
8 24 °F 1945
What's the most it has ever rained in Boston on 12/21?
For the date of Dec 21, the most precipitation ever recorded in Boston history is 1.91 inches which happened in 1946.
All-Time Most Precipitation in Boston on December 21
Rank Precipitation Year
1 1.91 inches 1946
2 1.53 inches 1993
3 1.34 inches 1977
4 1.18 inches 1960
5 0.92 inches 1914
6 0.85 inches 1957
6 0.85 inches 1905
8 0.70 inches 1925
8 0.70 inches 1973
10 0.66 inches 1975
All-Time Most Snow in Boston on December 21
Rank Precipitation Year
1 10.1 inches 1975
2 6.0 inches 1954
3 3.8 inches 2008
4 3.5 inches 1914
5 2.1 inches 1984
6 2.0 inches 1910
7 1.9 inches 1966
8 1.7 inches 1897
9 0.7 inches 1995
10 0.6 inches 1916
10 0.6 inches 1921
Weather Station Details
Years Station Coordinates
1936–2024 Boston Logan International Airport location
1893–1935 Boston City location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
© H Brothers Inc, 2021–2024
Contact us | Privacy policy