1901-2000 Degrees Fahrenheit 1 45.6 42.8 2.8 104 26 1926,1943 1921 1984 1981 top-third 1990 2 39.3 36.7 2.6 100 30 1926 1921,1945 1984 1977 top-third 1898 3 33.8 31.4 2.4 99 31 1926,1934,2015 2012 1984 1983 top-third 1983,2022 4 29.4 28.5 0.9 80 50 1904 2012 1984 1983 normal 1931,1955,2019 5 29.8 27.7 2.1 98 31 1904 2012 1984 1983 top-third 1898 6 30.9 29.2 1.7 98 31 1904 2012 1984 1983 top-third 1942 7 33.8 31.8 2.0 102 27 1918 2012 1984 1983 top-third 1976 8 36.7 35.2 1.5 100 29 1918 2012 1984 1983 top-third 9 40.2 38.7 1.5 103 26 1904 2012 1984 1983 top-third 10 42.9 41.6 1.3 100 29 1904 2012 1984 1983 top-third 1974,1976 11 44.9 43.6 1.3 100 29 1904 2012 1984 1983 top-third 1913 12 45.4 44.5 0.9 89 40 1918 2012 1984 1983 top-third 2005 18 40.0 39.4 0.6 80 48 1905 2017 1983 1984 normal 1914,1931 24 45.1 44.5 0.6 86 42 1905 2017 1983 1984 top-third 1910,1939,1952,1988,1989,1996 36 45.4 44.5 0.9 94 33 1906 2023 1984 1955 top-third 48 44.9 44.5 0.4 76 50 1907 2023 1984 1976 normal 1948 60 44.7 44.5 0.2 68 57 1908 2023 1984 1984 normal 1936,1948,1984