1991-2020 Degrees Fahrenheit 1 83.1 83.5 -0.4 29 38 1974 1977 1968 1965 normal 2 86.2 86.7 -0.5 32 35 1971 2019 1968 1964 normal 1953 3 88.0 87.7 0.3 43 24 1976 1951 1968 1964 normal 2016 4 87.9 87.6 0.3 44 23 1971 1951 1968 1964 normal 1982 5 86.1 86.5 -0.4 29 38 1976 1998 1968 1964 normal 1978,1984,1999,2016,2017 6 84.1 84.6 -0.5 27 39 1976 2011 1968 1967 normal 1995 7 80.7 82.2 -1.5 16 50 1987 2011 1968 1967 bottom-third 2004 8 78.1 79.5 -1.4 17 48 1987 2000 1968 1967 bottom-third 9 75.8 76.8 -1.0 23 42 1987 2000 1968 1967 normal 1982,1993,2003,2015 10 73.7 74.7 -1.0 24 41 1968 2000 1968 1967 normal 1971,2003,2004,2014 11 72.6 73.7 -1.1 22 43 1987 2000 1968 1967 normal 1985,2015 12 72.9 73.8 -0.9 24 41 1968,1987 2000 1968 1967 normal 2015 18 76.1 77.4 -1.3 12 52 1977 2000 1968 1967 bottom-third 24 71.9 73.8 -1.9 4 59 1971,1988 2000 1969 1968 bottom-tenth 36 72.5 73.8 -1.3 10 51 1970 2000 1968 1967 bottom-third 1966,1989 48 72.4 73.7 -1.3 9 50 1971 1955,2001,2019 1968 1967 bottom-third 60 72.3 73.7 -1.4 7 50 1979 1956,2002,2020 1969 1968 bottom-third