Boston - Highest Temperature for Each Year

Here's where you'll find answers to questions about the highest temperatures and hottest days in Boston, Massachusetts. How hot did it get in 2019? When was the last time thermometers in Boston rose above 100 °F? What was the highest temperature in Boston a century ago? Answers to those questions and much more can be found quickly and easily in the list below of record high temperatures.

This page gives the highest temperature for each year in Boston and the date that it happened. A date with a plus sign beside it means it was that hot on at least one other day earlier that year.

These records go back to 1893. Since 1937 the temperature extremes were measured at Boston's Logan International Airport. Before then, the weather station was in downtown Boston.

The highest temperature recorded during that time there was 104 degrees Fahrenheit (40 Celsius) on July 4, 1911.

Highest Boston temperatures in recent years
Max °F Date Max °C
93 September 07, 2023   34
100 July 24, 2022   38
100 June 30, 2021   38
95 July 28, 2020 + 35
98 July 21, 2019 37
98 August 29, 2018 + 37
95 June 13, 2017 + 35
98 August 12, 2016 + 37
96 September 08, 2015 36
93 September 02, 2014 34
99 July 19, 2013 37
97 July 17, 2012 + 36
103 July 22, 2011 39
100 July 06, 2010 38
Highest temperature recorded at Boston each year
Max °F Date Max °C
95 August 18, 2009 35
95 July 19, 2008 + 35
96 August 25, 2007 + 36
98 August 02, 2006 37
97 August 05, 2005 36
93 June 09, 2004 34
93 August 22, 2003 + 34
101 August 14, 2002 38
97 August 09, 2001 36
92 June 17, 2000 33
98 July 17, 1999 + 37
93 July 22, 1998 34
95 July 17, 1997 35
91 May 21, 1996 + 33
100 July 14, 1995 38
97 July 21, 1994 36
99 July 10, 1993 + 37
92 May 23, 1992 33
99 July 21, 1991 + 37
93 July 20, 1990 + 34
96 July 26, 1989 36
99 July 11, 1988 37
96 August 17, 1987 36
95 July 07, 1986 35
93 August 15, 1985 34
98 July 15, 1984 + 37
99 September 11, 1983 + 37
98 July 19, 1982 + 37
99 July 09, 1981 37
99 July 21, 1980 37
95 June 16, 1979 + 35
99 July 23, 1978 37
102 July 21, 1977 39
95 June 24, 1976 35
102 August 02, 1975 39
95 July 04, 1974 35
99 August 30, 1973 37
94 July 12, 1972 34
94 July 09, 1971 + 34
94 August 16, 1970 + 34
95 September 01, 1969 + 35
98 July 16, 1968 37
94 June 16, 1967 34
97 July 03, 1966 36
93 August 07, 1965 + 34
97 July 01, 1964 36
98 July 02, 1963 + 37
92 June 17, 1962 33
95 June 13, 1961 35
93 September 08, 1960 + 34
96 August 16, 1959 + 36
93 July 02, 1958 34
98 July 20, 1957 37
97 June 13, 1956 36
100 August 05, 1955 38
95 July 31, 1954 + 35
100 September 02, 1953 38
100 July 23, 1952 + 38
92 July 26, 1951 + 33
93 July 31, 1950 + 34
101 August 10, 1949 38
100 August 27, 1948 38
99 August 13, 1947 37
96 July 19, 1946 36
96 June 15, 1945 36
101 August 12, 1944 38
97 June 25, 1943 36
93 July 14, 1942 34
96 July 02, 1941 + 36
95 July 30, 1940 + 35
96 September 16, 1939 36
94 August 16, 1938 + 34
99 July 08, 1937 37
98 July 08, 1936 37
92 July 12, 1935 33
94 June 29, 1934 34
99 June 29, 1933 37
93 May 26, 1932 + 34
97 August 06, 1931 + 36
98 August 03, 1930 37
97 September 03, 1929 36
96 August 04, 1928 36
95 July 13, 1927 35
103 July 22, 1926 39
100 June 06, 1925 38
98 August 07, 1924 37
96 June 20, 1923 + 36
93 August 16, 1922 + 34
95 July 28, 1921 + 35
93 August 08, 1920 34
101 July 05, 1919 + 38
98 July 23, 1918 37
98 August 02, 1917 + 37
95 August 08, 1916 35
94 September 16, 1915 + 34
95 May 27, 1914 35
96 August 17, 1913 + 36
99 July 09, 1912 37
104 July 04, 1911 40
94 July 11, 1910 34
95 July 30, 1909 35
97 July 12, 1908 36
94 August 12, 1907 + 34
93 August 06, 1906 34
94 July 19, 1905 + 34
92 June 26, 1904 33
93 July 10, 1903 + 34
92 June 03, 1902 33
97 June 28, 1901 36
97 August 26, 1900 + 36
94 July 04, 1899 34
99 July 03, 1898 37
94 September 10, 1897 + 34
95 August 10, 1896 35
96 September 23, 1895 + 36
97 July 28, 1894 + 36
94 June 20, 1893 34
Reference

Jay Lawrimore. 2016. Global Summary of the Year, Version 1.0. NOAA National Centers for Environmental Information. 

Boston - Extremes
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