1991-2020 Degrees Fahrenheit 1 43.2 47.5 -4.3 33 97 1943 2023 1920 1922 bottom-third 1912 2 35.0 41.3 -6.3 10 120 1926 2012 1916 1922 bottom-tenth 3 28.6 36.4 -7.8 6 124 1934 2012 1916 1922 bottom-tenth 4 25.6 33.2 -7.6 4 126 1904 2012 1912 1922 bottom-tenth 5 25.5 32.6 -7.1 7 121 1904 2012 1920 1922 bottom-tenth 6 27.6 33.8 -6.2 7 119 1904 2012 1920 1922 bottom-tenth 1948 7 30.7 36.2 -5.5 8 118 1918 2012 1920 1922 bottom-tenth 8 34.6 39.6 -5.0 9 117 1918 2012 1920 1922 bottom-tenth 1943 9 38.2 43.1 -4.9 8 118 1904 2012 1920 1922 bottom-tenth 10 41.3 46.0 -4.7 8 118 1904 2012,2023 1920 1922 bottom-tenth 11 43.6 48.0 -4.4 8 118 1904 2012 1920 1922 bottom-tenth 12 44.9 48.9 -4.0 9 117 1918 2012,2023 1920 1922 bottom-tenth 1908,1959 18 40.0 43.8 -3.8 14 108 1905 2017,2023 1918 1922 bottom-third 24 45.7 48.8 -3.1 20 102 1905 2017 1919 1922 bottom-third 1978,1982 36 46.5 48.8 -2.3 40 78 1906 2023 1922 1921 normal 1971,1983 48 46.0 48.8 -2.8 23 92 1906 2023 1921 1922 bottom-third 1913,1930 60 46.3 48.7 -2.4 33 79 1906,1918,1920 2023 1922 1903 bottom-third 1936,1939,1963,1981