1901-2000 Degrees Fahrenheit 1 25.3 21.7 3.6 98 31 1989 2015 1906 1907 top-third 1913 2 28.7 28.0 0.7 70 59 1917 2015 1906 1895 normal 1932,1992 3 32.7 33.9 -1.2 28 101 1917 2015 1906 1905 bottom-third 1936,1939,1942 4 38.7 39.6 -0.9 30 99 1917 2015 1906 1902 bottom-third 1939,1945 5 43.3 44.5 -1.2 21 108 1904 2015 1905 1906 bottom-third 1902 6 47.0 48.1 -1.1 19 110 1904 2015 1904 1906 bottom-third 1909,1940,1972 7 48.9 50.0 -1.1 17 112 1904 2021 1905 1906 bottom-third 1940,1964 8 48.7 50.4 -1.7 10 119 1917 2015 1904 1906 bottom-tenth 9 47.3 49.3 -2.0 5 124 1917 2015,2021 1904 1906 bottom-tenth 10 45.3 47.3 -2.0 4 125 1917 2012 1904 1906 bottom-tenth 11 42.2 44.6 -2.4 4 125 1917 2012 1904 1906 bottom-tenth 12 39.8 42.3 -2.5 4 125 1904 2012 1904 1906 bottom-tenth 18 42.3 44.3 -2.0 6 122 1904 2012 1905 1906 bottom-tenth 24 40.7 42.3 -1.6 6 122 1905 2021 1905 1906 bottom-tenth 1924 36 40.6 42.3 -1.7 5 122 1905,1906 2012,2022 1906 1904 bottom-tenth 48 40.1 42.3 -2.2 1 125 1907 2013 1907 1906 lowest 60 40.4 42.3 -1.9 1 124 1907 2014,2022 1907 1906 lowest