YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.17 | s | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | 50.90 | a | ----- | z | 50.86 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.41 | d | 52.41 | a | 38.21 | c | 52.56 | g |
1912 | 45.53 | a | 47.19 | b | 49.71 | c | 57.36 | b | 71.70 | a | 79.67 | 82.47 | a | 81.39 | 75.17 | 66.48 | 59.43 | 43.84 | 63.33 | |||||||
1913 | 42.33 | a | 47.71 | 53.45 | 65.72 | a | 76.48 | 78.57 | 81.65 | 81.35 | 74.71 | b | 67.03 | 59.97 | 40.13 | 64.09 | ||||||||||
1914 | 50.45 | 53.50 | 58.67 | a | 67.73 | 73.06 | 80.67 | 79.29 | 82.19 | 78.23 | 66.26 | 61.18 | b | 41.57 | a | 66.07 | ||||||||||
1915 | 41.32 | 48.50 | 49.68 | 60.20 | 71.13 | 83.33 | 82.77 | a | 80.61 | 75.86 | a | 70.55 | 61.23 | 49.33 | a | 64.54 | ||||||||||
1916 | 44.97 | 52.24 | 61.39 | 62.73 | 73.10 | 86.00 | 81.97 | 78.97 | 81.90 | 64.87 | 52.90 | 45.68 | 65.56 | |||||||||||||
1917 | 43.42 | 47.74 | a | 54.29 | 63.00 | 66.26 | 83.63 | 89.93 | a | 83.23 | 77.57 | 71.94 | 62.30 | 58.20 | a | 66.79 | ||||||||||
1918 | 44.52 | 54.57 | 63.00 | 66.83 | 76.84 | 92.13 | 87.03 | 81.03 | 74.69 | a | 66.58 | 47.13 | 40.06 | 66.20 | ||||||||||||
1919 | 40.16 | 45.36 | 56.30 | h | 68.71 | p | 69.84 | 76.03 | 80.00 | 84.00 | 74.60 | 62.77 | 53.77 | 49.10 | 63.56 | b | ||||||||||
1920 | 48.90 | 52.52 | 54.39 | 59.07 | 70.81 | 78.00 | 81.87 | 80.45 | 75.07 | 63.94 | 53.70 | 44.45 | 63.60 | |||||||||||||
1921 | 47.00 | 50.14 | 59.90 | 60.83 | 70.84 | 77.57 | 77.52 | 78.77 | 79.77 | 72.35 | 64.43 | 55.35 | 66.21 | |||||||||||||
1922 | 44.71 | 48.64 | 53.90 | 60.80 | 74.38 | b | 84.67 | 87.10 | 85.26 | 82.60 | 69.29 | 50.57 | 49.77 | 65.97 | ||||||||||||
1923 | 50.26 | 47.39 | 51.87 | 62.70 | 75.23 | 83.53 | 83.71 | 78.58 | 73.73 | 61.61 | 51.80 | 41.52 | 63.49 | |||||||||||||
1924 | 46.42 | 53.21 | 50.74 | 62.47 | 73.32 | 88.37 | 83.00 | 85.19 | 79.77 | 69.84 | 60.87 | 44.26 | 66.45 | |||||||||||||
1925 | 44.87 | 54.27 | b | 62.21 | b | 69.89 | b | 75.76 | b | 82.03 | a | 83.68 | 78.41 | b | 76.00 | 65.65 | 56.63 | 47.06 | 66.37 | |||||||
1926 | 36.84 | 52.93 | 50.84 | 57.63 | 67.58 | 78.53 | 79.58 | 81.16 | 75.37 | 69.52 | 55.40 | 42.97 | 62.36 | |||||||||||||
1927 | 51.32 | 52.04 | 55.74 | 65.07 | 77.71 | 81.87 | 85.74 | 79.90 | 72.33 | 69.23 | 61.93 | 42.61 | 66.29 | |||||||||||||
1928 | 50.52 | 50.48 | 59.77 | 59.77 | 77.71 | 82.00 | 85.00 | 78.52 | 75.83 | 68.32 | 50.67 | 40.06 | 64.89 | |||||||||||||
1929 | 44.45 | 42.36 | 52.74 | 63.87 | 69.35 | 85.00 | 80.48 | 79.26 | 76.83 | 62.45 | 45.72 | a | 47.00 | 62.46 | ||||||||||||
1930 | 40.32 | 53.39 | 50.10 | 67.47 | 72.32 | 82.73 | 81.52 | 81.58 | 75.83 | 65.65 | 49.53 | 41.71 | 63.51 | |||||||||||||
1931 | 42.61 | 44.04 | 52.48 | 61.40 | 72.16 | 83.57 | 83.81 | 79.61 | 78.97 | 70.32 | 52.40 | 41.26 | 63.55 | |||||||||||||
1932 | 36.48 | b | 49.90 | 46.42 | 59.03 | 66.63 | a | 76.43 | 80.65 | 80.35 | 73.67 | 60.65 | 55.30 | 41.26 | 60.56 | |||||||||||
1933 | 47.39 | 40.82 | 56.06 | 55.30 | 65.26 | 76.37 | 83.19 | 79.48 | 76.00 | 68.35 | 57.03 | 52.94 | 63.18 | |||||||||||||
1934 | 45.58 | 54.68 | 59.35 | 63.37 | 73.87 | 85.23 | 86.81 | 87.65 | 73.13 | 66.77 | 56.70 | 46.23 | 66.61 | |||||||||||||
1935 | 48.06 | 42.36 | 52.06 | 59.63 | 59.81 | 72.70 | 78.58 | 82.77 | 78.76 | a | 70.30 | a | 56.93 | 44.58 | 62.21 | |||||||||||
1936 | 47.94 | 51.03 | 62.84 | 70.28 | a | 76.58 | 86.27 | 85.06 | 79.52 | 77.10 | 65.16 | 56.40 | 49.00 | a | 67.26 | |||||||||||
1937 | 41.31 | b | 47.11 | 46.97 | 62.40 | 70.97 | a | 79.47 | 86.00 | a | 89.48 | 78.13 | 68.90 | 54.97 | 46.87 | 64.38 | ||||||||||
1938 | 46.87 | 50.46 | 58.77 | 66.70 | 74.97 | 81.57 | 81.29 | 83.55 | 73.53 | 67.42 | 54.93 | 49.29 | 65.78 | |||||||||||||
1939 | 41.84 | 40.79 | 57.23 | 65.13 | 74.26 | 85.00 | 82.26 | 80.16 | 76.13 | 65.74 | 53.47 | 51.00 | 64.42 | |||||||||||||
1940 | 45.77 | 46.93 | 59.58 | 66.43 | 74.39 | 81.27 | 84.90 | 80.52 | 76.70 | 70.39 | 52.13 | 50.06 | 65.76 | |||||||||||||
1941 | 53.52 | 55.32 | 52.00 | 58.23 | 72.65 | 80.30 | 81.87 | 85.61 | 78.80 | 66.87 | 56.77 | 52.07 | a | 66.17 | ||||||||||||
1942 | 54.68 | 51.37 | a | 56.81 | 68.07 | 75.52 | 86.07 | 86.65 | 82.77 | 76.07 | 66.00 | 63.40 | 52.06 | 68.29 | ||||||||||||
1943 | 48.52 | 57.50 | 61.19 | 74.13 | 80.94 | 84.10 | 85.39 | 89.77 | 77.10 | 70.29 | 60.10 | 41.77 | 69.23 | |||||||||||||
1944 | 40.90 | 60.11 | a | 60.74 | 62.67 | 70.23 | 80.80 | 88.90 | 84.71 | 77.96 | g | 68.48 | 55.73 | 49.40 | f | 67.33 | b | |||||||||
1945 | 46.26 | 53.50 | 57.32 | 66.48 | a | 77.19 | 83.47 | 85.30 | a | 83.35 | 78.83 | 69.60 | a | 66.00 | 43.10 | 67.53 | ||||||||||
1946 | 37.81 | 49.11 | a | 55.68 | 67.30 | 70.26 | 85.33 | 84.74 | 81.29 | 76.60 | 67.87 | a | 51.93 | 56.71 | g | 66.17 | a | |||||||||
1947 | 48.68 | 53.43 | 57.97 | a | 67.60 | 78.14 | c | 85.07 | 89.52 | 86.52 | 81.07 | 70.71 | 48.59 | a | 45.94 | 67.77 | ||||||||||
1948 | 44.35 | 47.96 | a | 52.23 | 69.90 | 76.10 | a | 83.87 | 85.84 | 84.45 | 80.79 | a | 65.63 | a | 52.24 | a | 50.34 | b | 66.14 | |||||||
1949 | 35.55 | 46.89 | 59.42 | 63.21 | a | 74.81 | 84.77 | 84.06 | 83.00 | 74.81 | c | 66.04 | c | ----- | z | 47.06 | 65.42 | a | ||||||||
1950 | 50.13 | 56.07 | 61.32 | 69.37 | 74.97 | 84.59 | a | 81.13 | 81.35 | 76.33 | 76.29 | 61.72 | a | 57.06 | 69.19 | |||||||||||
1951 | 46.13 | 49.20 | w | 56.16 | 63.03 | a | 76.63 | a | 84.53 | 89.03 | 83.58 | 81.38 | d | 71.23 | 54.70 | 47.42 | 68.53 | a | ||||||||
1952 | 50.77 | 49.83 | 51.74 | 63.77 | 74.87 | 86.13 | 86.53 | a | 86.10 | 79.57 | 73.06 | 49.40 | 44.48 | 66.35 | ||||||||||||
1953 | 53.13 | 47.43 | 58.42 | 64.39 | b | 69.71 | 86.87 | 86.06 | 83.16 | 81.21 | a | 68.23 | 59.50 | 45.71 | 66.98 | |||||||||||
1954 | 51.71 | 59.07 | 57.70 | a | 71.73 | 75.00 | 84.07 | 85.90 | 82.39 | 79.23 | 68.61 | 58.55 | a | 48.87 | 68.57 | |||||||||||
1955 | 43.23 | 49.04 | 56.13 | a | 65.10 | a | 72.03 | 80.30 | 80.13 | 78.87 | 78.73 | 68.61 | 56.17 | 49.29 | 64.80 | |||||||||||
1956 | 51.26 | 44.03 | 60.90 | 64.67 | 78.71 | 85.20 | 83.06 | 81.81 | 83.30 | 69.17 | a | 54.87 | 49.77 | 67.23 | ||||||||||||
1957 | 49.03 | a | 56.61 | 55.19 | 63.03 | 67.65 | 82.57 | 85.61 | 80.90 | 77.43 | 61.26 | 44.45 | a | 49.37 | a | 64.43 | ||||||||||
1958 | 43.14 | b | 51.57 | 46.37 | a | 59.40 | 75.90 | a | 83.30 | 85.87 | 81.90 | 70.83 | 63.77 | 56.53 | 54.80 | a | 64.45 | |||||||||
1959 | 49.29 | 48.30 | a | 56.61 | 64.72 | a | 72.77 | 82.23 | 83.42 | 81.06 | 78.41 | a | 67.13 | a | 56.37 | c | 47.59 | d | 65.66 | |||||||
1960 | 43.10 | 42.04 | a | 60.39 | 67.73 | 73.67 | a | 84.04 | e | 81.40 | a | 84.26 | 78.96 | b | 68.16 | f | 57.63 | c | 42.00 | 65.02 | a | |||||
1961 | 45.65 | 51.43 | 56.86 | b | 64.31 | a | 74.66 | b | 82.41 | a | 86.58 | 80.68 | c | 72.78 | c | 68.94 | 48.83 | 44.23 | a | 64.78 | ||||||
1962 | 42.81 | 54.39 | 54.00 | l | 68.00 | 76.27 | a | 81.00 | 79.48 | b | 84.83 | b | 69.96 | e | 62.84 | 52.56 | c | 44.23 | a | 65.12 | a | |||||
1963 | 37.93 | a | 46.85 | b | 50.89 | d | 64.20 | 72.04 | c | 81.55 | a | 87.06 | 79.58 | 76.53 | 70.77 | 55.10 | a | 47.23 | 64.14 | |||||||
1964 | 41.77 | 39.28 | 51.74 | 61.73 | 73.83 | a | 82.33 | 85.71 | 83.84 | 74.87 | 71.13 | 51.87 | 45.81 | 63.66 | ||||||||||||
1965 | 49.50 | a | 47.46 | 51.84 | 63.93 | 70.48 | 78.70 | 83.37 | a | 79.90 | ----- | z | 69.74 | 60.17 | 47.61 | 63.88 | a | |||||||||
1966 | 39.61 | 43.04 | a | 60.00 | 66.52 | a | 75.47 | a | 80.10 | a | 87.35 | 78.77 | 75.17 | 66.65 | 60.17 | 47.61 | c | 65.04 | ||||||||
1967 | 50.32 | 53.89 | 64.32 | 68.50 | 77.03 | 81.00 | a | 85.06 | 79.10 | 75.47 | 70.03 | 58.13 | 39.52 | 66.86 | ||||||||||||
1968 | ----- | z | 52.08 | e | 52.77 | 61.20 | 71.84 | 84.83 | 79.23 | 76.77 | 76.07 | 68.84 | 52.40 | 44.45 | 65.50 | a | ||||||||||
1969 | 49.94 | 47.86 | 48.17 | a | 66.70 | 73.00 | 80.73 | 84.06 | 83.55 | 74.80 | 61.77 | 52.23 | 47.55 | 64.20 | ||||||||||||
1970 | 44.71 | 51.43 | 50.06 | 61.57 | 74.10 | 77.69 | a | 83.06 | 81.87 | 78.13 | 61.19 | 56.43 | 49.87 | 64.18 | ||||||||||||
1971 | 47.68 | 48.79 | 58.52 | 64.20 | 72.61 | 83.80 | 84.19 | 77.10 | 73.03 | 62.87 | 53.30 | 42.55 | 64.05 | |||||||||||||
1972 | 47.87 | a | 53.28 | 63.55 | 70.37 | k | 74.53 | a | 82.10 | 83.55 | b | 79.00 | a | 73.93 | a | 66.03 | a | 47.90 | a | 45.40 | a | 65.19 | a | |||
1973 | 42.83 | a | ----- | z | 53.74 | h | 60.42 | f | 72.52 | d | 82.29 | b | 82.45 | 83.71 | 77.50 | 72.28 | b | 60.93 | a | 51.19 | 69.52 | c | ||||
1974 | 46.84 | 50.86 | 64.35 | 67.07 | b | 80.18 | c | ----- | z | 83.27 | a | 78.77 | 72.07 | 64.10 | ----- | z | ----- | z | 67.50 | c | ||||||
1975 | 50.75 | s | 47.07 | 57.55 | 62.70 | c | 72.58 | 84.83 | 82.81 | 85.17 | g | 75.71 | f | 68.94 | 56.89 | c | 53.90 | j | 66.67 | d | ||||||
1976 | 51.26 | h | 56.08 | d | 58.81 | 67.13 | 72.53 | a | 84.07 | 82.31 | b | 82.26 | 74.10 | 60.77 | 50.10 | a | 48.97 | 67.01 | a | |||||||
1977 | 43.47 | a | 50.71 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.09 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.71 | 49.94 | 55.85 | 64.28 | 73.29 | 82.46 | 83.80 | 81.87 | 76.64 | 67.45 | 55.37 | 46.62 | 65.33 | |||||||||||||
S.D. | 4.40 | 4.54 | 4.68 | 3.75 | 3.63 | 3.25 | 2.77 | 2.78 | 2.86 | 3.37 | 4.67 | 4.38 | 1.85 | |||||||||||||
SKEW | -0.25 | -0.21 | -0.13 | 0.04 | -0.87 | -0.29 | 0.01 | 0.69 | 0.14 | -0.20 | -0.03 | 0.39 | -0.02 | |||||||||||||
MAX | 54.68 | 60.11 | 64.35 | 74.13 | 80.94 | 92.13 | 89.93 | 89.77 | 83.30 | 76.29 | 66.00 | 58.20 | 69.23 | |||||||||||||
MIN | 35.55 | 39.28 | 46.37 | 55.30 | 59.81 | 72.70 | 77.52 | 76.77 | 69.96 | 60.65 | 44.45 | 38.21 | 60.56 | |||||||||||||
YRS | 64 | 64 | 63 | 62 | 65 | 64 | 65 | 64 | 62 | 65 | 64 | 62 | 51 |