1901-2000 Degrees Fahrenheit 1 51.6 52.9 -1.3 24 105 1945 2022 1963 1963 bottom-third 1912,1944,1963 2 48.1 48.5 -0.4 38 91 1907 2018 1962 1963 bottom-third 1935,1946,1969,1987 3 43.3 44.2 -0.9 21 108 1983 2018 1955 1963 bottom-third 4 38.6 40.2 -1.6 9 120 1917 2020 1945 1963 bottom-tenth 1965 5 33.8 36.9 -3.1 1 128 1964 2017 1964 1963 lowest 6 30.5 34.0 -3.5 1 128 1964 2017 1964 1963 lowest 7 28.5 32.1 -3.6 1 127 1964 2017 1964 1963 lowest 8 28.5 31.5 -3.0 1 127 1964 2017 1964 1963 lowest 9 30.0 32.3 -2.3 3 125 1933 2017 1933 1963 bottom-tenth 10 32.2 34.1 -1.9 4 124 1913 2017 1944 1963 bottom-tenth 1944 11 34.5 36.1 -1.6 5 123 1913 2017 1933 1963 bottom-tenth 12 36.7 38.0 -1.3 7 121 1913 2017 1944 1963 bottom-tenth 18 35.5 36.7 -1.2 7 121 1913 2018 1933 1963 bottom-tenth 24 37.4 38.0 -0.6 15 112 1913 2018 1962 1963 bottom-third 1917,1946,1950,1971,1972 36 37.3 38.0 -0.7 8 118 1977 2018 1962 1963 bottom-tenth 1915,1919,1951,1966,1971,1973 48 37.3 38.0 -0.7 5 120 1977 2018 1951 1963 bottom-tenth 1933,1947,1951,1974,1978 60 37.3 38.0 -0.7 4 120 1977 2019,2020 1948 1963 bottom-tenth 1917,1933,1948,1978