1901-2000 Degrees Fahrenheit 1 65.8 68.5 -2.7 14 115 1986 2020 1911 1910 bottom-third 2 68.3 71.1 -2.8 6 123 1900 2020 1911 1910 bottom-tenth 3 69.4 72.3 -2.9 2 127 1900 2022 1900 1911 bottom-tenth 4 68.9 71.3 -2.4 2 127 1907 2021 1907 1911 bottom-tenth 5 67.1 69.2 -2.1 3 126 1907 2021 1911 1910 bottom-tenth 1916,1965 6 64.1 66.7 -2.6 1 128 1912 2021 1912 1911 lowest 7 61.5 64.1 -2.6 1 128 1912 2021 1912 1911 lowest 8 59.6 61.8 -2.2 2 127 1911 2015 1911 1910 bottom-tenth 1948 9 57.8 59.6 -1.8 4 125 1903,1911,1917 2015 1911 1910 bottom-tenth 1955 10 56.0 57.9 -1.9 3 125 1917,1933 2015 1912 1911 bottom-tenth 1949 11 55.3 57.2 -1.9 3 125 1917 2015 1912 1911 bottom-tenth 12 55.5 57.4 -1.9 2 126 1917 2015 1912 1911 bottom-tenth 18 58.4 60.5 -2.1 2 126 1917 2015 1912 1911 bottom-tenth 24 55.8 57.4 -1.6 3 124 1913,1949 2015 1912 1911 bottom-tenth 1917 36 56.2 57.4 -1.2 3 123 1913 2016 1912 1911 bottom-tenth 1950 48 56.2 57.4 -1.2 2 123 1913 2017,2018 1912 1911 bottom-tenth 60 56.3 57.4 -1.1 2 122 1913 2018 1912 1911 bottom-tenth 1917,1921