1991-2020 Degrees Fahrenheit 1 35.3 34.0 1.3 92 38 2002 1910 1899 1900 top-third 2 27.2 30.1 -2.9 53 77 2019 2016 1900 1900 normal 1900,1993 3 25.2 28.4 -3.2 54 76 1969 1992 1899 1900 normal 1923 4 27.5 27.6 -0.1 86 43 1969 1992 1900 1901 top-third 5 27.8 28.8 -1.0 67 62 1969 1992 1899 1900 normal 6 30.5 31.5 -1.0 65 63 1969 2000 1899 1900 normal 1959,1974 7 33.6 35.2 -1.6 55 73 1969 1961 1899 1900 normal 1910 8 37.3 39.1 -1.8 50 78 1969 1992 1899 1900 normal 9 40.6 42.3 -1.7 48 80 1969 1961 1899 1900 normal 1960,1975 10 43.2 44.0 -0.8 65 63 1969 2016 1899 1900 normal 1970,1973 11 44.4 44.7 -0.3 74 54 1969 2016 1900 1901 normal 1959,1991,2003,2010,2017 12 44.5 44.5 0.0 83 45 1969 1931 1900 1901 normal 1980,1990,1998,2017 18 40.3 40.2 0.1 89 37 1979 2016 1900 1901 top-third 1927,2023 24 44.0 44.5 -0.5 73 53 1952 2016 1900 1901 normal 36 42.7 44.5 -1.8 22 102 1952 2017 1900 1898 bottom-third 1908,1910,1950,1969,1997 48 43.0 44.5 -1.5 29 93 1952 2016 1900 1901 bottom-third 1906,1907,1916,1949,1980,1981 60 42.7 44.6 -1.9 16 104 1952 2016 1900 1901 bottom-third 1969,1986