1991-2020 Degrees Fahrenheit 1 27.6 31.8 -4.2 22 67 2015 2018 1942 1943 bottom-third 2 28.3 30.9 -2.6 34 55 2015 2002 1943 1937 normal 1955,2014 3 28.2 32.6 -4.4 25 63 1948 2002 1943 1942 bottom-third 4 31.4 35.6 -4.2 16 72 1948 2002,2012 1943 1942 bottom-third 1994 5 35.6 39.4 -3.8 17 71 1977 2012 1943 1942 bottom-third 6 39.9 43.8 -3.9 13 75 1977 2012 1943 1942 bottom-third 1946,1979 7 44.2 47.9 -3.7 11 77 1977 2012 1943 1942 bottom-third 1945,1948,1979 8 47.8 51.2 -3.4 12 76 1977 2012 1943 1942 bottom-third 1945,1948 9 50.2 53.1 -2.9 16 72 1941,1963 2012 1943 1942 bottom-third 1970,1971,1978 10 50.9 53.6 -2.7 17 71 1941,1963,1968 2012,2023 1943 1942 bottom-third 1970 11 50.1 53.1 -3.0 11 77 1941 2012 1941 1943 bottom-third 1938 12 48.8 51.9 -3.1 10 78 1941 2023 1941 1943 bottom-third 18 45.7 49.2 -3.5 4 83 1941 2017 1941 1943 bottom-tenth 24 49.0 51.8 -2.8 9 78 1941 2023 1942 1943 bottom-tenth 36 49.3 51.8 -2.5 13 73 1941,1942 2023 1943 1939 bottom-third 1959,1979 48 48.8 51.8 -3.0 4 81 1941 2023 1943 1940 bottom-tenth 60 48.5 51.7 -3.2 1 83 1944 2023 1944 1943 lowest