1991-2020 Degrees Fahrenheit 1 68.0 69.8 -1.8 59 66 1899 1967 1914 1915 normal 2 65.9 69.8 -3.9 10 115 1899,1909 2014 1912 1915 bottom-tenth 1989 3 64.2 67.6 -3.4 8 117 1899,1954 2015 1910 1915 bottom-tenth 1955 4 61.3 65.3 -4.0 3 121 1899 2015 1909 1915 bottom-tenth 1909 5 59.4 62.6 -3.2 6 118 1899 1958,2015,2021 1909 1915 bottom-tenth 1964 6 57.2 60.2 -3.0 10 112 1899 2015 1909 1915 bottom-tenth 1903 7 55.5 57.9 -2.4 13 109 1899 2015 1909 1915 bottom-third 8 52.6 56.0 -3.4 1 120 1916,1920,1955 2015 1916 1915 lowest 1920,1955 9 51.4 54.4 -3.0 4 116 1899 2015 1909 1915 bottom-tenth 1933,1955 10 50.8 53.7 -2.9 3 117 1917 2015 1909 1915 bottom-tenth 1909 11 51.3 53.8 -2.5 4 116 1917 2015 1909 1915 bottom-tenth 1923 12 52.0 54.7 -2.7 4 115 1917 2015 1909 1915 bottom-tenth 18 54.8 56.5 -1.7 20 95 1917 2015 1913 1915 bottom-third 1911 24 52.9 54.7 -1.8 12 100 1917 2016 1913 1906 bottom-third 1918,1922,1937,1949,1955,1972,1980 36 -99 54.7 -99 -99 -99 1917 2016 normal 48 -99 54.7 -99 -99 -99 1912 2018 normal 60 -99 54.7 -99 -99 -99 1913 2018,2019 normal