1901-2000 Degrees Fahrenheit 1 45.1 38.6 6.5 128 1 1897 1992 1991 1992 highest 2 42.4 35.8 6.6 127 2 1936 2015 1991 1992 top-tenth 3 39.8 33.3 6.5 127 2 1950 2015 1991 1992 top-tenth 4 38.5 32.7 5.8 125 3 1949 2015 1991 1934 top-tenth 5 38.2 33.5 4.7 126 2 1949 1934 1991 1934 top-tenth 2015 6 39.7 35.8 3.9 125 3 1949 2015 1991 1934 top-tenth 7 42.6 38.8 3.8 126 2 1949 2015 1991 1992 top-tenth 8 45.5 41.9 3.6 126 2 1949 2015 1991 1992 top-tenth 9 47.7 44.3 3.4 126 2 1949 2015 1991 1992 top-tenth 10 48.4 45.7 2.7 125 3 1949 2015 1991 1992 top-tenth 11 48.5 46.2 2.3 121 7 1917 2015 1991 1968 top-tenth 2022 12 48.2 46.1 2.1 121 7 1949,1956 2015 1991 1941 top-tenth 18 44.1 42.7 1.4 110 17 1917 2016 1991 1991 top-third 1940,1967,1991,2003 24 47.7 46.1 1.6 116 11 1950,1956 2016 1991 1968 top-tenth 1968,2021 36 47.7 46.1 1.6 117 9 1957 2016 1991 1942 top-tenth 1942,2007 48 47.4 46.1 1.3 113 12 1952 2018 1991 1942 top-tenth 1993,1995,2015,2020 60 47.5 46.1 1.4 115 9 1913,1952 2018,2019 1991 1992 top-tenth 2021