1991-2020 Degrees Fahrenheit 1 41.2 44.4 -3.2 18 79 2019 1934 1943 1942 bottom-third 2 38.3 41.2 -2.9 21 76 1936 2015 1943 1942 bottom-third 1935,1971,1980 3 35.7 39.1 -3.4 26 71 1950 1934 1943 1941 bottom-third 1928 4 34.4 37.8 -3.4 21 75 1949 1934 1943 1941 bottom-third 1989,2019 5 35.0 38.4 -3.4 20 76 1949 1934 1943 1942 bottom-third 6 37.9 40.5 -2.6 23 73 1949 1934 1943 1941 bottom-third 1980 7 41.9 43.8 -1.9 29 67 1949 2015 1943 1941 bottom-third 1948,1972,2017 8 45.1 47.3 -2.2 26 70 1949 2015 1942 1943 bottom-third 1948,1977 9 48.1 50.2 -2.1 29 67 1949 2015 1942 1943 bottom-third 1945,1984 10 49.3 51.6 -2.3 23 73 1949 2015 1942 1943 bottom-third 1933,1947,2001 11 49.7 52.2 -2.5 17 79 1949 2015 1937 1943 bottom-third 12 50.0 52.0 -2.0 21 75 1949 2015 1942 1943 bottom-third 1931,1942,1945,1971,1984 18 45.9 48.2 -2.3 16 79 1950 2016 1937 1943 bottom-third 1952,1955,1960 24 50.2 52.0 -1.8 24 71 1950 2016 1943 1943 bottom-third 1943 36 50.1 52.0 -1.9 17 77 1957 2017,2022 1938 1943 bottom-third 1945,1973,1980,1981 48 50.6 52.0 -1.4 35 58 1952 2018 1939 1943 normal 1936,1937,1966,1975,1976,1977,1978 60 51.0 52.0 -1.0 50 42 1933,1952 2018,2019,2022 1940 1943 normal 1962