1991-2020 Degrees Fahrenheit 1 34.1 40.3 -6.2 13 72 1989 2015 1942 1941 bottom-third 2 39.7 44.8 -5.1 11 74 1989 2015 1942 1941 bottom-third 3 45.1 49.8 -4.7 8 77 1976 2015 1943 1942 bottom-tenth 4 50.8 55.1 -4.3 6 78 1976 2015 1943 1942 bottom-tenth 5 55.8 59.7 -3.9 6 78 1962 2015 1940 1942 bottom-tenth 1958 6 59.3 62.9 -3.6 6 78 1962 2015 1940 1942 bottom-tenth 7 61.8 64.4 -2.6 16 68 1962 2015 1942 1941 bottom-third 1944,1960,1963 8 61.9 64.4 -2.5 16 68 1940,1958 2015 1942 1941 bottom-third 1960,2000 9 60.2 63.2 -3.0 7 77 1940 2015 1940 1942 bottom-tenth 1947,1989 10 58.2 61.2 -3.0 7 77 1940 2010 1940 1942 bottom-tenth 1956,1972 11 56.0 59.0 -3.0 9 75 1940 2012 1940 1942 bottom-third 12 53.9 56.9 -3.0 6 78 1940 2012 1940 1942 bottom-tenth 1947,1967 18 55.8 58.9 -3.1 2 81 1963 2016 1943 1942 bottom-tenth 24 54.0 56.9 -2.9 4 79 1941 2021 1941 1942 bottom-tenth 36 54.3 56.9 -2.6 7 75 1942 2012 1942 1943 bottom-tenth 48 53.7 56.9 -3.2 1 80 1943 2013 1943 1943 lowest 60 -99 56.8 -99 -99 -99 1944 2020 normal