Boston September 20 Weather Records

Daily averages and all-time records for weather in Boston, Massachusetts for the date of September 20.
September 20 All-Time Records
1893–2024
Highest temperature 97 °F 1983
Lowest temperature 42 °F 1979
Lowest daily high 58 °F 1960
Highest daily low 71 °F 1983
Most precipitation 2.82 inches 1899
Most snow none -
September 20 Average Weather
1991–2020 1
Average high 71.9 °F
Average low 56.8 °F
Chance precipitation 31.4%
Chance snow 0%
Boston September 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 74 59 0.00 0.0
2022 62 58 0.01 0.0
2021 72 57 0.00 0.0
2020 60 44 0.00 0.0
2019 79 52 0.00 0.0
2018 66 60 0.00 0.0
2017 72 63 0.27 0.0
2016 75 67 0.00 0.0
2015 75 57 0.00 0.0
2014 73 47 0.00 0.0
2013 71 55 0.00 0.0
2012 62 51 0.00 0.0
2011 67 55 0.13 0.0
2010 72 56 0.00 0.0
2009 73 49 0.00 0.0
2008 62 48 0.00 0.0
2007 78 56 0.00 0.0
2006 74 58 0.07 0.0
2005 76 62 0.01 0.0
2004 70 48 0.00 0.0
2003 83 68 0.00 0.0
2002 79 60 0.00 0.0
2001 68 57 0.01 0.0
2000 81 63 0.01 0.0
1999 74 55 0.00 0.0
1998 78 61 0.00 0.0
1997 84 54 0.40 0.0
1996 76 55 0.00 0.0
1995 62 51 0.00 0.0
1994 76 53 0.00 0.0
1993 63 43 0.00 0.0
1992 65 51 0.00 0.0
1991 62 49 0.68 0.0
1990 71 55 0.08 0.0
1989 74 61 0.34 0.0
1988 74 63 0.01 0.0
1987 60 57 1.10 0.0
1986 64 55 0.07 0.0
1985 88 66 0.00 0.0
1984 83 55 0.00 0.0
1983 97 71 0.00 0.0
1982 62 51 0.48 0.0
1981 71 54 0.00 0.0
1980 77 55 0.00 0.0
1979 63 42 0.00 0.0
1978 74 50 0.00 0.0
1977 66 53 1.54 0.0
1976 82 62 0.04 0.0
1975 74 62 0.02 0.0
1974 80 63 0.25 0.0
1973 69 51 0.00 0.0
1972 61 52 0.03 0.0
1971 69 61 0.05 0.0
1970 77 55 0.00 0.0
1969 60 48 0.00 0.0
1968 65 60 0.00 0.0
1967 67 57 0.00 0.0
1966 63 54 0.00 0.0
1965 80 59 0.00 0.0
1964 62 42 0.00 0.0
1963 72 54 0.72 0.0
1962 63 47 0.00 0.0
1961 71 58 0.02 0.0
1960 58 53 2.13 0.0
1959 67 49 0.00 0.0
1958 65 54 0.00 0.0
1957 85 58 0.00 0.0
1956 61 47 0.28 0.0
1955 80 62 0.66 0.0
1954 76 61 0.00 0.0
1953 80 59 0.00 0.0
1952 78 60 0.00 0.0
1951 74 57 0.00 0.0
1950 61 54 0.00 0.0
1949 70 54 0.01 0.0
1948 72 60 0.12 0.0
1947 60 45 0.00 0.0
1946 83 64 0.00 0.0
1945 64 57 0.00 0.0
1944 73 63 0.03 0.0
1943 76 52 0.00 0.0
1942 74 56 0.28 0.0
1941 62 45 0.00 0.0
1940 76 57 0.00 0.0
1939 73 53 0.00 0.0
1938 78 62 1.50 0.0
1937 61 48 0.00 0.0
1936 66 51 0.00 0.0
1935 79 59 0.00 0.0
1934 70 59 0.00 0.0
1933 77 55 0.00 0.0
1932 70 55 0.00 0.0
1931 69 56 0.00 0.0
1930 83 56 0.00 0.0
1929 59 42 0.00 0.0
1928 80 58 1.69 0.0
1927 73 57 0.04 0.0
1926 73 57 0.00 0.0
1925 71 54 0.00 0.0
1924 65 50 0.00 0.0
1923 64 59 0.00 0.0
1922 70 54 0.00 0.0
1921 64 53 0.00 0.0
1920 64 45 0.00 0.0
1919 75 56 0.00 0.0
1918 76 57 0.97 0.0
1917 79 60 0.20 0.0
1916 74 49 0.00 0.0
1915 70 60 0.00 0.0
1914 82 54 0.00 0.0
1913 59 56 0.10 0.0
1912 70 51 0.00 0.0
1911 75 56 0.00 0.0
1910 71 49 0.00 0.0
1909 61 46 0.00 0.0
1908 63 52 0.00 0.0
1907 72 56 0.00 0.0
1906 72 64 0.17 0.0
1905 72 61 0.00 0.0
1904 73 56 0.00 0.0
1903 60 51 0.00 0.0
1902 63 59 0.00 0.0
1901 59 47 0.19 0.0
1900 65 47 0.00 0.0
1899 68 62 2.82 0.0
1898 67 50 0.00 0.0
1897 70 50 0.74 0.0
1896 66 52 0.23 0.0
1895 83 58 0.00 0.0
1894 80 60 1.34 0.0
1893 74 59 0.00 0.0
What's the all-time high for Boston on 9/20?
For the date of Sep 20, the highest temperature ever reached in Boston history is 97 °F which happened in 1983.
Highest Temperatures in Boston on September 20
Rank Temperature Year
1 97 °F 1983
2 88 °F 1985
3 85 °F 1957
4 84 °F 1997
5 83 °F 2003
5 83 °F 1984
5 83 °F 1946
5 83 °F 1930
5 83 °F 1895
10 82 °F 1914
10 82 °F 1976
What's the all-time low for Boston on 9/20?
For the date of Sep 20, the lowest temperature ever reached in Boston history is 42 °F which has happened 3 times, most recently in 1979.
Lowest Temperatures in Boston on September 20
Rank Temperature Year
1 42 °F 1929
1 42 °F 1964
1 42 °F 1979
4 43 °F 1993
5 44 °F 2020
6 45 °F 1947
6 45 °F 1941
6 45 °F 1920
9 46 °F 1909
10 47 °F 2014
10 47 °F 1900
10 47 °F 1956
10 47 °F 1962
10 47 °F 1901
Lowest High Temperatures in Boston on September 20
Rank Temperature Year
1 58 °F 1960
2 59 °F 1901
2 59 °F 1913
2 59 °F 1929
5 60 °F 2020
5 60 °F 1987
5 60 °F 1903
5 60 °F 1969
5 60 °F 1947
10 61 °F 1972
10 61 °F 1909
10 61 °F 1956
10 61 °F 1950
10 61 °F 1937
What's the most it has ever rained in Boston on 9/20?
For the date of Sep 20, the most precipitation ever recorded in Boston history is 2.82 inches which happened in 1899.
All-Time Most Precipitation in Boston on September 20
Rank Precipitation Year
1 2.82 inches 1899
2 2.13 inches 1960
3 1.69 inches 1928
4 1.54 inches 1977
5 1.50 inches 1938
6 1.34 inches 1894
7 1.10 inches 1987
8 0.97 inches 1918
9 0.74 inches 1897
10 0.72 inches 1963
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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