Boston May 20 Weather Records

Daily averages and all-time records for weather in Boston, Massachusetts for the date of May 20.
May 20 All-Time Records
1893–2024
Highest temperature 91 °F 1996
Lowest temperature 42 °F 2002
Lowest daily high 46 °F 1901
Highest daily low 66 °F 2019
Most precipitation 1.83 inches 2023
Most snow none -
May 20 Average Weather
1991–2020 1
Average high 68.0 °F
Average low 51.4 °F
Chance precipitation 37.8%
Chance snow 0%
Boston May 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 66 53 1.83 0.0
2022 66 52 0.00 0.0
2021 69 55 0.00 0.0
2020 58 45 0.00 0.0
2019 88 66 0.13 0.0
2018 81 54 0.08 0.0
2017 59 52 0.00 0.0
2016 71 51 0.00 0.0
2015 66 51 0.00 0.0
2014 69 53 0.00 0.0
2013 82 56 0.04 0.0
2012 71 55 0.00 0.0
2011 65 51 0.01 0.0
2010 84 53 0.00 0.0
2009 80 52 0.00 0.0
2008 66 45 0.00 0.0
2007 64 50 0.52 0.0
2006 68 50 0.00 0.0
2005 64 48 0.00 0.0
2004 72 52 0.00 0.0
2003 82 51 0.00 0.0
2002 57 42 0.00 0.0
2001 60 49 0.00 0.0
2000 54 44 0.00 0.0
1999 69 53 0.21 0.0
1998 78 54 0.00 0.0
1997 71 46 0.36 0.0
1996 91 53 0.00 0.0
1995 76 51 0.00 0.0
1994 57 44 0.00 0.0
1993 52 49 0.08 0.0
1992 74 50 0.00 0.0
1991 70 47 0.00 0.0
1990 52 44 0.16 0.0
1989 79 54 0.00 0.0
1988 58 50 0.12 0.0
1987 54 43 0.00 0.0
1986 80 60 0.00 0.0
1985 83 55 0.00 0.0
1984 64 53 0.08 0.0
1983 67 56 0.12 0.0
1982 84 63 0.23 0.0
1981 67 50 0.00 0.0
1980 66 46 0.00 0.0
1979 58 52 0.70 0.0
1978 82 57 0.00 0.0
1977 80 50 0.00 0.0
1976 60 47 0.03 0.0
1975 90 61 0.00 0.0
1974 58 46 0.00 0.0
1973 67 50 0.86 0.0
1972 51 47 0.73 0.0
1971 54 46 0.00 0.0
1970 73 50 0.00 0.0
1969 67 62 1.23 0.0
1968 56 49 0.14 0.0
1967 76 51 0.00 0.0
1966 73 58 0.00 0.0
1965 67 47 0.00 0.0
1964 70 50 0.00 0.0
1963 79 56 0.00 0.0
1962 72 47 0.00 0.0
1961 65 44 0.00 0.0
1960 69 54 0.00 0.0
1959 89 65 0.02 0.0
1958 68 55 0.09 0.0
1957 51 44 0.22 0.0
1956 62 48 0.01 0.0
1955 76 52 0.00 0.0
1954 57 51 0.15 0.0
1953 67 55 0.00 0.0
1952 60 49 0.60 0.0
1951 68 53 0.00 0.0
1950 55 46 0.01 0.0
1949 70 43 0.81 0.0
1948 47 42 0.00 0.0
1947 83 50 0.20 0.0
1946 72 54 0.00 0.0
1945 61 45 0.00 0.0
1944 75 48 0.00 0.0
1943 60 47 0.71 0.0
1942 76 56 0.00 0.0
1941 67 54 0.00 0.0
1940 75 50 0.00 0.0
1939 66 51 0.00 0.0
1938 62 52 0.04 0.0
1937 59 46 0.00 0.0
1936 63 48 0.00 0.0
1935 66 47 0.00 0.0
1934 67 52 0.00 0.0
1933 90 60 0.64 0.0
1932 83 52 0.00 0.0
1931 85 60 0.00 0.0
1930 55 45 0.07 0.0
1929 50 44 0.00 0.0
1928 52 48 1.11 0.0
1927 57 50 0.00 0.0
1926 65 51 0.00 0.0
1925 78 53 0.00 0.0
1924 54 48 0.00 0.0
1923 75 50 0.00 0.0
1922 80 56 0.00 0.0
1921 78 47 0.00 0.0
1920 75 54 0.00 0.0
1919 65 53 0.00 0.0
1918 84 60 0.00 0.0
1917 80 52 0.00 0.0
1916 67 48 0.08 0.0
1915 69 48 0.00 0.0
1914 80 58 0.00 0.0
1913 68 47 0.00 0.0
1912 57 47 0.00 0.0
1911 67 50 0.00 0.0
1910 78 50 0.00 0.0
1909 53 45 0.00 0.0
1908 68 55 0.00 0.0
1907 67 46 0.19 0.0
1906 64 48 0.00 0.0
1905 57 44 0.00 0.0
1904 69 50 0.03 0.0
1903 80 59 0.00 0.0
1902 57 48 0.04 0.0
1901 46 44 0.72 0.0
1900 58 45 0.03 0.0
1899 54 47 0.00 0.0
1898 84 59 0.06 0.0
1897 71 49 0.00 0.0
1896 66 48 0.00 0.0
1895 68 45 0.00 0.0
1894 n/a 44 0.04 0.0
1893 71 45 0.00 0.0
What's the all-time high for Boston on 5/20?
For the date of May 20, the highest temperature ever reached in Boston history is 91 °F which happened in 1996.
Highest Temperatures in Boston on May 20
Rank Temperature Year
1 91 °F 1996
2 90 °F 1933
2 90 °F 1975
4 89 °F 1959
5 88 °F 2019
6 85 °F 1931
7 84 °F 2010
7 84 °F 1898
7 84 °F 1982
7 84 °F 1918
What's the all-time low for Boston on 5/20?
For the date of May 20, the lowest temperature ever reached in Boston history is 42 °F which has happened 2 times, most recently in 2002.
Lowest Temperatures in Boston on May 20
Rank Temperature Year
1 42 °F 1948
1 42 °F 2002
3 43 °F 1987
3 43 °F 1949
5 44 °F 1990
5 44 °F 1957
5 44 °F 1929
5 44 °F 1901
5 44 °F 1961
5 44 °F 2000
5 44 °F 1994
5 44 °F 1905
5 44 °F 1894
Lowest High Temperatures in Boston on May 20
Rank Temperature Year
1 46 °F 1901
2 47 °F 1948
3 50 °F 1929
4 51 °F 1972
4 51 °F 1957
6 52 °F 1993
6 52 °F 1928
6 52 °F 1990
9 53 °F 1909
10 54 °F 1924
10 54 °F 1987
10 54 °F 1899
10 54 °F 1971
10 54 °F 2000
What's the most it has ever rained in Boston on 5/20?
For the date of May 20, the most precipitation ever recorded in Boston history is 1.83 inches which happened in 2023.
All-Time Most Precipitation in Boston on May 20
Rank Precipitation Year
1 1.83 inches 2023
2 1.23 inches 1969
3 1.11 inches 1928
4 0.86 inches 1973
5 0.81 inches 1949
6 0.73 inches 1972
7 0.72 inches 1901
8 0.71 inches 1943
9 0.70 inches 1979
10 0.64 inches 1933
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.
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