YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.84 | 85.07 | a | 72.14 | b | 71.47 | n | 49.39 | b | 44.97 | 67.68 | g | ||
1918 | 42.77 | 40.43 | 47.03 | 60.11 | c | 60.90 | 77.43 | b | 81.55 | b | 75.77 | a | 75.90 | a | 58.23 | 42.83 | 36.61 | 58.30 | ||||||||
1919 | 40.26 | 38.71 | 47.32 | 56.67 | 63.32 | 71.20 | 83.73 | a | 79.48 | 68.55 | a | 57.74 | 45.55 | a | 30.35 | 56.91 | ||||||||||
1920 | 40.63 | a | 44.64 | a | 46.90 | 52.70 | 66.53 | a | 69.97 | 83.93 | a | 81.61 | 68.17 | 56.61 | 44.27 | 36.55 | 57.71 | |||||||||
1921 | 36.03 | 42.85 | a | 49.84 | 53.17 | a | 65.42 | 71.46 | d | 77.94 | 77.81 | 62.47 | 61.93 | a | 44.30 | 34.45 | 56.47 | |||||||||
1922 | 31.31 | b | 35.68 | 41.45 | 51.17 | a | 62.10 | b | 78.00 | a | 83.29 | 79.70 | a | 74.66 | a | 60.58 | 38.23 | 31.61 | 55.65 | |||||||
1923 | 36.65 | 38.33 | a | 47.58 | 56.47 | 65.23 | 70.57 | 80.87 | 79.61 | 73.53 | 57.55 | 48.63 | 36.84 | 57.65 | ||||||||||||
1924 | 33.45 | 44.17 | 46.23 | 54.87 | 71.13 | 69.80 | 79.77 | 76.48 | 71.23 | 56.27 | a | 39.83 | 31.58 | 56.23 | ||||||||||||
1925 | 38.19 | 42.93 | 47.81 | 59.87 | 65.63 | l | 72.40 | 82.97 | 77.71 | 67.57 | 60.74 | 43.55 | a | 38.90 | 57.51 | a | ||||||||||
1926 | 34.90 | 42.46 | 55.84 | 62.87 | 60.81 | 75.93 | 81.41 | b | 77.74 | 63.20 | 57.67 | a | 45.39 | b | 37.43 | a | 57.97 | |||||||||
1927 | 34.53 | a | 41.36 | 47.06 | 56.37 | k | 57.16 | 69.62 | f | 79.32 | c | 78.55 | 64.17 | 56.10 | 45.87 | ----- | z | 56.01 | c | |||||||
1928 | 33.90 | 40.62 | 47.52 | 49.90 | 68.45 | 66.97 | 80.90 | 77.65 | 73.37 | 58.90 | 43.40 | 33.39 | 56.25 | |||||||||||||
1929 | 29.00 | 31.61 | 46.06 | 49.23 | 62.84 | 65.87 | 77.35 | 83.10 | 69.53 | 62.77 | 49.50 | 41.58 | 55.70 | |||||||||||||
1930 | ----- | z | ----- | z | ----- | z | 59.80 | 59.90 | 65.77 | 79.94 | 81.32 | 70.30 | 55.13 | 44.03 | 33.16 | 61.04 | c | |||||||||
1931 | 36.61 | 39.75 | 45.77 | 55.70 | 66.03 | 67.27 | 82.11 | c | 77.35 | 66.27 | 57.81 | 40.60 | 31.60 | a | 55.57 | |||||||||||
1932 | 33.83 | b | 38.48 | b | 43.31 | b | 53.93 | c | 60.27 | a | 74.14 | b | 73.59 | b | 76.67 | a | 72.87 | 59.10 | b | 46.36 | b | 34.42 | e | 55.58 | ||
1933 | 35.90 | b | 35.25 | d | 42.52 | 54.93 | a | 54.84 | 67.47 | 79.16 | 79.77 | a | 62.83 | a | 62.52 | b | 50.15 | c | 40.96 | d | 55.52 | |||||
1934 | 42.55 | b | 46.64 | 55.61 | 65.21 | a | 67.13 | a | 71.03 | 78.70 | a | 81.61 | 67.78 | c | 55.26 | 43.24 | a | 37.06 | 59.32 | |||||||
1935 | 34.84 | 43.18 | 42.27 | a | 53.50 | 63.84 | 70.75 | b | 78.37 | a | 77.17 | a | 75.97 | 60.96 | d | 43.50 | 35.19 | 56.63 | ||||||||
1936 | 37.03 | a | 28.12 | c | 45.41 | b | 58.20 | 68.36 | c | 70.83 | a | 78.81 | 80.06 | 72.37 | 66.90 | 48.17 | 40.17 | b | 57.87 | |||||||
1937 | 25.19 | 38.15 | a | 46.71 | 53.63 | 65.57 | a | 70.10 | 80.67 | a | 73.23 | a | 71.47 | 62.23 | 46.96 | b | 39.52 | b | 56.12 | |||||||
1938 | 36.59 | d | 36.71 | 44.10 | 60.77 | 66.73 | a | 74.55 | a | 84.17 | a | 76.52 | 77.30 | 58.18 | c | 41.04 | b | 39.79 | b | 58.04 | ||||||
1939 | 40.03 | b | 36.21 | 49.06 | 59.00 | 63.86 | c | 65.31 | a | 79.35 | 80.26 | 70.62 | a | 58.80 | a | 49.00 | a | 40.27 | a | 57.65 | ||||||
1940 | 35.76 | b | 40.38 | 51.29 | 54.46 | b | 67.67 | a | 75.47 | 76.94 | 79.68 | 71.59 | a | 57.55 | 38.79 | a | 37.00 | a | 57.21 | |||||||
1941 | 35.52 | 43.11 | 54.55 | 58.83 | 60.13 | a | 68.21 | a | 82.61 | 75.10 | 61.93 | 55.80 | a | 46.66 | a | 35.66 | b | 56.51 | ||||||||
1942 | 29.77 | 39.00 | 46.32 | 57.23 | 59.00 | 63.97 | 80.39 | 81.03 | 74.67 | 61.94 | 37.57 | 38.29 | 55.76 | |||||||||||||
1943 | 29.03 | 40.07 | 43.19 | 56.17 | 58.16 | 64.47 | 79.06 | 74.71 | 76.07 | 58.10 | 43.50 | 36.87 | 54.95 | |||||||||||||
1944 | 34.90 | 38.45 | 44.97 | 53.47 | 61.71 | 67.53 | 78.06 | 75.43 | a | 73.13 | 65.65 | 40.90 | 31.93 | a | 55.51 | |||||||||||
1945 | 37.59 | b | 41.60 | c | 42.32 | 50.70 | 63.23 | 68.10 | a | 80.48 | 79.71 | 67.50 | 62.72 | b | 40.04 | b | 33.50 | a | 55.62 | |||||||
1946 | 37.97 | 39.46 | 45.63 | a | 56.29 | b | 66.97 | 65.55 | a | 77.19 | 79.43 | a | 66.90 | 52.73 | a | 41.43 | 40.03 | b | 55.80 | |||||||
1947 | 35.52 | 43.39 | 52.68 | 57.37 | 69.52 | 66.63 | c | 73.77 | 74.94 | 70.63 | 53.39 | 44.37 | c | 37.70 | d | 56.66 | ||||||||||
1948 | 34.90 | 36.19 | b | 41.40 | a | 47.73 | 58.40 | a | 73.37 | 72.63 | a | 72.42 | 67.80 | 56.29 | 42.37 | 30.97 | 52.87 | |||||||||
1949 | 25.90 | 34.29 | 44.58 | 58.63 | 67.55 | 69.77 | 75.94 | 77.45 | 71.45 | a | 58.97 | 51.10 | 37.81 | 56.12 | ||||||||||||
1950 | 20.94 | 35.86 | 41.03 | 48.87 | 60.10 | 67.43 | 78.29 | 80.26 | 74.87 | 51.97 | 42.13 | 39.13 | 53.41 | |||||||||||||
1951 | 32.35 | 38.32 | 40.94 | 59.57 | 62.29 | 72.30 | 80.90 | 78.97 | 72.90 | 54.26 | 41.43 | 33.97 | 55.68 | |||||||||||||
1952 | 27.26 | 39.55 | 44.10 | a | 58.63 | 63.81 | 67.17 | 81.29 | 78.94 | 77.13 | 69.26 | 41.37 | 34.35 | 56.90 | ||||||||||||
1953 | 42.81 | 44.21 | 46.61 | 50.43 | 59.26 | 62.00 | 79.32 | 77.13 | 73.47 | 61.23 | 46.90 | 41.84 | 57.10 | |||||||||||||
1954 | 32.61 | 41.11 | 42.90 | 51.80 | 63.23 | 63.63 | 75.74 | 72.65 | 67.87 | 55.16 | 48.40 | 35.94 | 54.25 | |||||||||||||
1955 | 36.52 | 39.50 | 38.84 | 45.93 | 57.45 | 69.13 | 73.29 | 79.48 | 71.30 | 56.26 | 35.62 | a | 33.19 | 53.04 | ||||||||||||
1956 | 33.19 | 33.21 | 41.61 | 56.97 | 66.45 | 65.43 | 81.87 | 78.94 | 71.50 | 54.97 | 42.43 | 39.45 | 55.50 | |||||||||||||
1957 | 26.74 | 39.46 | 44.58 | 54.83 | 67.29 | 71.63 | 76.23 | 74.61 | 76.57 | 53.03 | 46.40 | 41.26 | 56.05 | |||||||||||||
1958 | 37.74 | 44.75 | 45.13 | 51.73 | 72.68 | 74.20 | 84.81 | 84.97 | 68.90 | 61.65 | 42.70 | 40.10 | 59.11 | |||||||||||||
1959 | 34.71 | 38.50 | 45.74 | 55.87 | 58.68 | 69.27 | 81.00 | 75.77 | 64.13 | 58.87 | 45.50 | 38.77 | 55.57 | |||||||||||||
1960 | 32.16 | 39.72 | 45.90 | 53.47 | 57.77 | 71.73 | 85.71 | 74.71 | 72.83 | 60.52 | 42.70 | 35.68 | 56.08 | |||||||||||||
1961 | 37.81 | 42.07 | 46.26 | 52.27 | 59.26 | 77.80 | 82.42 | 85.68 | 66.63 | 55.65 | 41.00 | 35.58 | 56.87 | |||||||||||||
1962 | 37.10 | 41.46 | 42.90 | 57.97 | 55.52 | 71.50 | b | 78.16 | 75.10 | 73.87 | 58.29 | 45.27 | 39.60 | a | 56.39 | |||||||||||
1963 | 35.26 | 48.68 | 48.16 | 49.73 | 63.26 | 68.53 | 73.13 | 78.39 | 76.53 | 59.06 | 43.10 | 34.45 | 56.52 | |||||||||||||
1964 | 37.68 | 44.55 | 43.77 | 51.97 | 60.65 | 66.80 | 78.00 | 72.39 | 68.07 | 59.35 | 40.80 | 31.58 | 54.63 | |||||||||||||
1965 | 36.19 | 43.82 | 48.74 | 57.57 | 61.94 | 72.13 | 80.45 | 76.61 | 68.47 | 64.23 | 45.70 | 36.55 | 57.70 | |||||||||||||
1966 | 35.42 | 40.07 | 46.29 | 57.97 | 66.84 | 67.10 | 76.23 | 79.32 | 74.60 | 59.68 | 46.03 | 37.87 | 57.28 | |||||||||||||
1967 | 39.87 | 45.25 | 44.77 | 47.25 | f | 63.71 | 73.53 | 81.32 | 86.55 | 79.10 | 55.74 | 45.27 | 36.45 | 59.23 | a | |||||||||||
1968 | 35.39 | 45.69 | 49.77 | 52.53 | 63.19 | 70.27 | 82.65 | 72.48 | 70.40 | 53.03 | 42.17 | 30.16 | 55.64 | |||||||||||||
1969 | 23.94 | 35.86 | 48.35 | 53.03 | 67.48 | 75.97 | 78.03 | 76.84 | 69.10 | 54.19 | 46.43 | 34.00 | 55.27 | |||||||||||||
1970 | 32.06 | 42.95 | h | 46.10 | 48.03 | 63.81 | 75.77 | 79.87 | 82.10 | 65.30 | 55.57 | a | 42.10 | 33.45 | 56.74 | a | ||||||||||
1971 | 37.58 | 42.39 | 40.52 | 50.17 | 63.81 | 63.87 | 80.55 | 85.16 | 63.83 | 55.45 | 42.40 | 34.58 | 55.03 | |||||||||||||
1972 | 33.71 | 37.41 | 46.90 | 48.83 | 65.52 | 69.30 | 78.13 | 80.74 | 63.87 | 59.65 | 41.87 | 30.52 | 54.70 | |||||||||||||
1973 | 32.55 | 40.93 | 47.16 | 56.10 | 64.55 | 69.27 | 81.65 | 78.32 | 68.83 | 54.23 | 35.10 | 36.58 | 55.44 | |||||||||||||
1974 | 30.42 | 41.25 | 43.19 | 49.23 | 56.90 | 74.53 | 76.03 | 79.23 | 75.30 | 61.42 | 42.93 | 37.84 | 55.69 | |||||||||||||
1975 | 35.13 | 34.25 | 41.97 | 48.33 | 60.84 | 66.73 | 80.81 | 72.13 | 73.07 | 51.84 | 40.63 | 38.26 | 53.67 | |||||||||||||
1976 | 38.13 | 37.67 | b | 42.76 | b | 49.90 | 61.90 | b | 64.13 | 75.94 | 71.03 | 72.20 | 59.35 | 45.63 | 39.74 | 54.87 | ||||||||||
1977 | 32.06 | 41.04 | d | 42.97 | 58.00 | 54.65 | 72.77 | 78.00 | n | 84.76 | j | 65.39 | l | ----- | z | ----- | z | ----- | z | 50.25 | f | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.55 | 39.98 | 45.77 | 54.52 | 62.98 | 69.89 | 79.56 | 78.21 | 70.58 | 58.29 | 43.71 | 36.39 | 56.12 | |||||||||||||
S.D. | 4.51 | 3.84 | 3.56 | 4.19 | 4.06 | 3.91 | 3.14 | 3.52 | 4.24 | 3.68 | 3.41 | 3.35 | 1.37 | |||||||||||||
SKEW | -0.75 | -0.46 | 0.82 | 0.12 | -0.00 | 0.19 | -0.18 | 0.22 | -0.23 | 0.55 | -0.12 | 0.02 | -0.07 | |||||||||||||
MAX | 42.81 | 48.68 | 55.84 | 65.21 | 72.68 | 78.00 | 86.84 | 86.55 | 79.10 | 69.26 | 51.10 | 44.97 | 59.32 | |||||||||||||
MIN | 20.94 | 28.12 | 38.84 | 45.93 | 54.65 | 62.00 | 72.63 | 71.03 | 61.93 | 51.84 | 35.10 | 30.16 | 52.87 | |||||||||||||
YRS | 59 | 58 | 59 | 58 | 59 | 59 | 60 | 60 | 60 | 59 | 60 | 59 | 54 |