1901-2000 Degrees Fahrenheit 1 37.8 33.1 4.7 116 14 1936 2015 1994 1992 top-third 1925 2 35.2 30.8 4.4 117 13 1937,1949 2015 1994 1992 top-tenth 3 34.0 30.7 3.3 115 14 1949 1934,2015 1994 1992 top-third 1941,1998 4 33.8 32.2 1.6 94 35 1949 1934 1994 1992 top-third 1902,1987,1988 5 36.3 35.2 1.1 85 44 1949 2015 1993 1994 normal 2018 6 40.5 38.8 1.7 100 29 1949 2015 1994 1992 top-third 2013 7 44.0 42.3 1.7 103 26 1949 2015 1994 1992 top-third 1990 8 46.9 45.1 1.8 112 17 1949 2015 1994 1992 top-third 9 48.0 46.5 1.5 107 22 1949 2015 1994 1992 top-third 1958 10 48.6 47.0 1.6 109 20 1949 2015 1994 1992 top-third 1926,2004,2020 11 48.6 46.8 1.8 120 9 1949 2015 1994 1988 top-tenth 1935,1940,1958,2018,2021 12 48.1 46.1 2.0 121 8 1949,1956 2016 1994 1988 top-tenth 1988 18 45.5 43.7 1.8 118 10 1917 2016 1994 1968 top-tenth 2004 24 47.4 46.1 1.3 106 22 1950,1956,1957 2016 1994 1992 top-third 1940,1989,1991,1996,2020 36 47.3 46.1 1.2 107 20 1957 2017 1994 1993 top-third 1940,1968,1993,1999 48 47.3 46.1 1.2 109 17 1952 2018 1994 1993 top-third 1943,1992,1993,2015 60 47.4 46.1 1.3 112 13 1913,1952 2019 1994 1992 top-third 1991,1992,1999