1901-2000 Degrees Fahrenheit 1 28.7 25.9 2.8 95 35 1923 2010 2003 2000 top-third 2 23.4 20.5 2.9 99 31 1923 2010 2003 2002 top-third 3 17.7 18.0 -0.3 50 80 1923 2010 2003 2002 normal 1906,2009 4 19.0 18.2 0.8 73 56 1923 2016 2003 2002 normal 1915 5 22.3 21.0 1.3 90 39 1934 2010 2003 2002 top-third 1974,1975 6 26.0 24.9 1.1 87 42 1918 2012,2023 2003 2002 top-third 1952,1969,1974 7 30.6 29.2 1.4 94 35 1918 2012 2003 2002 top-third 1910,1969 8 35.1 33.4 1.7 98 31 1905 2016 2003 2002 top-third 9 38.5 36.9 1.6 100 29 1905 2023 2003 2002 top-third 1962 10 40.8 39.2 1.6 101 28 1905 2023 2003 2002 top-third 1960,1974 11 41.6 40.3 1.3 99 30 1918 2023 2003 2002 top-third 1998,2008 12 41.1 40.1 1.0 93 36 1918 2023 2003 2002 top-third 1942,1988 18 35.1 35.0 0.1 58 70 1905 2013 1994 2003 normal 1939,1959,1967,1990 24 40.4 40.1 0.3 69 59 1905 2023 1994 2003 normal 1956,1970,2015 36 41.6 40.1 1.5 107 20 1906 2023 2003 2002 top-third 1953,1955,2006,2009,2016 48 41.2 40.0 1.2 97 29 1907 2013,2023 1998 2003 top-third 2006 60 41.7 40.0 1.7 106 19 1908 2013 1999 2003 top-third 1954,2006,2008,2009