Boston August 18 Weather Records

Daily averages and all-time records for weather in Boston, Massachusetts for the date of August 18.
August 18 All-Time Records
1893–2024
Highest temperature 95 °F 2009
Lowest temperature 53 °F 1918
Lowest daily high 63 °F 1919
Highest daily low 76 °F 1987
Most precipitation 4.88 inches 1955
Most snow none -
August 18 Average Weather
1991–2020 1
Average high 80.2 °F
Average low 65.0 °F
Chance precipitation 29.0%
Chance snow 0%
Boston August 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 81 67 1.35 0.0
2022 84 66 0.00 0.0
2021 89 72 0.00 0.0
2020 86 66 0.16 0.0
2019 81 69 0.16 0.0
2018 88 67 0.13 0.0
2017 81 65 0.24 0.0
2016 90 69 0.00 0.0
2015 87 71 0.14 0.0
2014 79 62 0.00 0.0
2013 78 63 0.00 0.0
2012 72 64 0.04 0.0
2011 88 68 0.00 0.0
2010 81 68 0.00 0.0
2009 95 72 0.00 0.0
2008 87 69 0.00 0.0
2007 74 58 0.04 0.0
2006 82 66 0.00 0.0
2005 75 62 0.00 0.0
2004 81 61 0.00 0.0
2003 74 65 0.00 0.0
2002 95 72 0.00 0.0
2001 83 71 0.00 0.0
2000 71 56 0.13 0.0
1999 87 68 0.00 0.0
1998 87 61 0.58 0.0
1997 78 58 0.49 0.0
1996 80 68 0.00 0.0
1995 81 65 0.00 0.0
1994 87 65 2.37 0.0
1993 75 65 0.00 0.0
1992 69 62 1.14 0.0
1991 92 70 0.00 0.0
1990 90 70 0.00 0.0
1989 72 62 0.00 0.0
1988 78 62 0.01 0.0
1987 94 76 0.00 0.0
1986 70 64 1.06 0.0
1985 75 65 0.00 0.0
1984 72 59 0.00 0.0
1983 75 68 0.26 0.0
1982 71 64 0.00 0.0
1981 78 60 0.00 0.0
1980 76 61 0.00 0.0
1979 72 60 0.19 0.0
1978 85 70 0.00 0.0
1977 75 63 0.00 0.0
1976 74 60 0.00 0.0
1975 87 66 0.00 0.0
1974 78 69 0.00 0.0
1973 80 65 0.00 0.0
1972 79 63 0.04 0.0
1971 81 66 0.00 0.0
1970 84 65 0.00 0.0
1969 90 74 0.00 0.0
1968 75 62 0.00 0.0
1967 86 68 0.00 0.0
1966 88 67 0.00 0.0
1965 86 69 0.00 0.0
1964 80 62 0.01 0.0
1963 77 60 0.16 0.0
1962 75 60 0.00 0.0
1961 76 59 0.00 0.0
1960 75 59 0.00 0.0
1959 90 75 0.03 0.0
1958 75 61 0.18 0.0
1957 75 59 0.00 0.0
1956 93 68 0.01 0.0
1955 76 70 4.88 0.0
1954 82 59 0.00 0.0
1953 75 60 0.00 0.0
1952 81 64 0.00 0.0
1951 78 62 0.00 0.0
1950 86 67 0.00 0.0
1949 80 63 0.53 0.0
1948 73 61 0.00 0.0
1947 75 59 0.00 0.0
1946 75 64 0.25 0.0
1945 75 59 0.00 0.0
1944 79 66 0.20 0.0
1943 77 63 0.00 0.0
1942 81 70 0.02 0.0
1941 76 54 0.00 0.0
1940 80 67 0.00 0.0
1939 72 65 0.00 0.0
1938 79 65 0.10 0.0
1937 86 66 0.00 0.0
1936 71 56 0.00 0.0
1935 90 70 0.00 0.0
1934 80 57 0.00 0.0
1933 82 65 0.00 0.0
1932 84 69 0.38 0.0
1931 84 65 0.00 0.0
1930 74 62 0.01 0.0
1929 89 62 0.00 0.0
1928 83 71 0.46 0.0
1927 66 56 0.84 0.0
1926 72 60 0.00 0.0
1925 91 66 0.00 0.0
1924 73 59 0.05 0.0
1923 75 58 0.00 0.0
1922 92 65 0.07 0.0
1921 74 67 1.12 0.0
1920 69 61 0.10 0.0
1919 63 59 0.14 0.0
1918 66 53 0.00 0.0
1917 77 62 0.00 0.0
1916 73 62 0.00 0.0
1915 72 55 0.00 0.0
1914 78 65 0.26 0.0
1913 91 71 0.00 0.0
1912 63 58 0.45 0.0
1911 87 63 0.47 0.0
1910 75 57 0.00 0.0
1909 68 58 0.34 0.0
1908 82 66 0.00 0.0
1907 81 63 0.00 0.0
1906 90 68 0.00 0.0
1905 68 57 0.00 0.0
1904 79 59 0.00 0.0
1903 73 59 0.00 0.0
1902 72 54 0.00 0.0
1901 76 65 0.20 0.0
1900 81 62 0.00 0.0
1899 86 62 0.00 0.0
1898 85 67 0.00 0.0
1897 77 59 0.02 0.0
1896 78 58 0.06 0.0
1895 75 64 1.24 0.0
1894 80 60 0.00 0.0
1893 66 59 0.03 0.0
What's the all-time high for Boston on 8/18?
For the date of Aug 18, the highest temperature ever reached in Boston history is 95 °F which has happened 2 times, most recently in 2009.
Highest Temperatures in Boston on August 18
Rank Temperature Year
1 95 °F 2009
1 95 °F 2002
3 94 °F 1987
4 93 °F 1956
5 92 °F 1922
5 92 °F 1991
7 91 °F 1925
7 91 °F 1913
9 90 °F 1990
9 90 °F 1969
9 90 °F 1906
9 90 °F 2016
9 90 °F 1959
9 90 °F 1935
What's the all-time low for Boston on 8/18?
For the date of Aug 18, the lowest temperature ever reached in Boston history is 53 °F which happened in 1918.
Lowest Temperatures in Boston on August 18
Rank Temperature Year
1 53 °F 1918
2 54 °F 1941
2 54 °F 1902
4 55 °F 1915
5 56 °F 1936
5 56 °F 2000
5 56 °F 1927
8 57 °F 1910
8 57 °F 1905
8 57 °F 1934
Lowest High Temperatures in Boston on August 18
Rank Temperature Year
1 63 °F 1919
1 63 °F 1912
3 66 °F 1918
3 66 °F 1893
3 66 °F 1927
6 68 °F 1909
6 68 °F 1905
8 69 °F 1992
8 69 °F 1920
10 70 °F 1986
What's the most it has ever rained in Boston on 8/18?
For the date of Aug 18, the most precipitation ever recorded in Boston history is 4.88 inches which happened in 1955.
All-Time Most Precipitation in Boston on August 18
Rank Precipitation Year
1 4.88 inches 1955
2 2.37 inches 1994
3 1.35 inches 2023
4 1.24 inches 1895
5 1.14 inches 1992
6 1.12 inches 1921
7 1.06 inches 1986
8 0.84 inches 1927
9 0.58 inches 1998
10 0.53 inches 1949
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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