YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.79 | j | 50.60 | 42.10 | a | 46.35 | j | |
1913 | 40.44 | 47.05 | 51.63 | 59.65 | c | 64.96 | h | 72.41 | s | 81.47 | a | ----- | z | ----- | z | 62.67 | h | 56.73 | 45.26 | 54.60 | e | |||||
1914 | 47.71 | 49.11 | 56.31 | 63.05 | 69.29 | 77.95 | ----- | z | ----- | z | 74.82 | s | 63.02 | i | 56.76 | a | 44.93 | h | 60.02 | e | ||||||
1915 | 42.50 | c | 48.09 | a | 50.88 | c | 59.30 | 63.44 | 74.95 | 80.66 | b | 80.79 | x | 71.31 | q | 63.03 | 52.25 | 44.00 | 57.91 | b | ||||||
1916 | 47.03 | 52.97 | 58.40 | a | 60.35 | 64.11 | d | 75.30 | 81.45 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.80 | e | ||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | 49.96 | f | 53.09 | 54.56 | 57.55 | 70.66 | 73.97 | a | 83.09 | c | 87.18 | a | 79.90 | 68.28 | a | 56.00 | d | 47.06 | 66.49 | a | ||||||
1942 | 46.85 | 46.57 | 51.35 | 59.53 | 66.10 | 74.88 | 83.95 | 81.68 | a | 75.35 | 63.84 | 53.50 | 45.90 | 62.46 | ||||||||||||
1943 | 43.87 | 51.04 | a | 54.85 | 63.28 | a | 68.38 | a | 75.47 | a | 82.50 | 81.96 | f | 78.25 | 64.10 | 51.93 | 46.52 | 61.83 | a | |||||||
1944 | 43.18 | 47.97 | 52.45 | 58.93 | 68.74 | 74.22 | 82.97 | 84.00 | 76.52 | 67.24 | 52.43 | 45.18 | 62.82 | |||||||||||||
1945 | 45.40 | 49.55 | 51.68 | a | 58.05 | 67.73 | 73.77 | 85.18 | 83.74 | 76.95 | 67.19 | 52.15 | 44.77 | a | 63.01 | |||||||||||
1946 | 44.08 | 46.73 | 55.07 | a | 67.13 | 68.37 | a | 80.02 | 84.42 | 82.67 | a | 78.05 | 60.67 | b | 50.34 | a | 48.90 | a | 63.87 | |||||||
1947 | 42.92 | 52.41 | a | 55.77 | a | 59.66 | a | 73.91 | b | 76.64 | a | 84.58 | a | 82.50 | b | 78.23 | 66.77 | 48.40 | a | 43.53 | a | 63.78 | ||||
1948 | 44.33 | a | 47.77 | c | 51.29 | 63.93 | a | 71.02 | 78.33 | 84.38 | a | 83.71 | 78.72 | 66.55 | 48.37 | 45.44 | 63.65 | |||||||||
1949 | 41.03 | 45.34 | 54.68 | 63.60 | 67.37 | 77.47 | 83.60 | 81.11 | 78.98 | 62.95 | 54.88 | 44.73 | 62.98 | |||||||||||||
1950 | 45.31 | 52.00 | 56.41 | c | 64.17 | 67.10 | 76.73 | 83.16 | 81.34 | 72.98 | 69.40 | ----- | z | 47.58 | 65.11 | a | ||||||||||
1951 | 43.40 | 48.32 | 53.10 | 60.45 | 69.42 | 76.57 | 86.19 | 84.21 | 77.13 | 66.53 | 53.32 | 44.81 | 63.62 | |||||||||||||
1952 | 46.15 | 48.14 | 49.58 | 62.22 | 71.18 | 77.45 | 84.65 | h | 84.52 | 78.70 | 67.71 | g | 51.59 | a | 43.83 | e | 61.33 | b | ||||||||
1953 | 46.57 | a | 48.22 | j | 53.95 | 59.85 | 62.71 | 77.48 | 84.82 | a | 81.26 | 74.77 | 63.35 | 53.34 | a | 37.86 | b | 63.27 | a | |||||||
1954 | 43.85 | 52.45 | 53.63 | 62.59 | a | 68.68 | 77.82 | 86.40 | b | 80.38 | a | 78.65 | 67.92 | 55.00 | b | 45.93 | a | 64.44 | ||||||||
1955 | 43.71 | 43.20 | 54.37 | 59.45 | 67.48 | b | 75.93 | 81.69 | 80.57 | b | 74.98 | 65.67 | a | 53.72 | 47.76 | 62.38 | ||||||||||
1956 | 48.84 | b | 46.04 | b | 55.16 | 60.71 | a | 69.21 | 80.62 | 82.11 | 79.76 | 78.00 | a | 65.15 | a | 46.93 | a | 42.79 | 62.94 | |||||||
1957 | 48.26 | 56.91 | a | 55.90 | 58.80 | 65.44 | 79.45 | a | 85.55 | 81.20 | a | 74.05 | 63.39 | 48.07 | 45.18 | a | 63.52 | |||||||||
1958 | 42.00 | 48.54 | 48.87 | 59.93 | 72.55 | 80.72 | 83.61 | 83.39 | 76.68 | 65.20 | a | 50.80 | 44.23 | 63.04 | ||||||||||||
1959 | 45.29 | 46.43 | 52.10 | 63.07 | 67.18 | 81.55 | 85.76 | 82.08 | 76.18 | 65.52 | 52.83 | 47.85 | 63.82 | |||||||||||||
1960 | 41.87 | a | 44.98 | a | 56.56 | 61.95 | 68.21 | 81.27 | 84.39 | 83.53 | 78.62 | a | 64.19 | 53.22 | 43.69 | 63.54 | ||||||||||
1961 | 46.47 | 50.16 | 55.69 | 62.18 | b | 68.55 | 81.07 | a | 86.00 | 82.73 | 73.98 | 63.18 | 50.73 | 45.52 | 63.85 | |||||||||||
1962 | 44.58 | 50.48 | 49.35 | 64.42 | 66.11 | v | 75.43 | 83.58 | 83.08 | 78.38 | 64.98 | 55.53 | 47.66 | 63.41 | a | |||||||||||
1963 | 41.48 | 51.20 | 52.12 | a | 58.08 | 70.45 | 74.10 | 85.92 | 81.21 | 78.57 | 67.48 | 54.03 | 43.13 | 63.15 | ||||||||||||
1964 | 39.87 | 41.97 | 50.63 | 58.85 | 68.89 | 76.45 | 85.89 | 82.44 | 74.13 | d | 67.55 | 49.92 | 44.60 | 61.76 | ||||||||||||
1965 | 47.47 | 47.36 | 51.44 | 60.07 | 65.32 | 73.35 | 85.23 | 83.25 | a | 73.97 | a | 65.03 | 55.80 | 46.03 | a | 62.86 | ||||||||||
1966 | 41.61 | 44.11 | 54.05 | 61.03 | 71.32 | 77.31 | a | 86.03 | a | 82.52 | a | 75.13 | c | 61.73 | a | 54.21 | a | 42.79 | 62.65 | |||||||
1967 | 41.10 | a | 48.46 | a | 56.35 | a | 58.12 | 67.87 | a | 76.16 | a | 83.27 | a | 80.41 | d | 75.38 | 63.18 | 52.89 | c | 40.53 | 61.98 | |||||
1968 | 43.16 | 54.00 | 54.40 | 58.91 | b | 67.60 | 77.70 | c | 82.65 | 79.05 | a | 74.20 | 64.15 | 51.95 | 40.84 | 62.38 | ||||||||||
1969 | 48.40 | 48.16 | 50.02 | 62.02 | a | 70.34 | 75.50 | f | 85.86 | f | 86.84 | 79.12 | f | 62.30 | f | 52.40 | a | 45.66 | c | 57.98 | d | |||||
1970 | 43.53 | a | 50.57 | 51.95 | 55.30 | 69.31 | e | ----- | z | ----- | z | ----- | z | 66.12 | r | 58.63 | 51.05 | b | 45.18 | 53.19 | d | |||||
1971 | 43.69 | b | 48.19 | b | 56.15 | d | 62.29 | m | 68.07 | h | ----- | z | ----- | z | 84.53 | 76.66 | a | 65.75 | c | 59.15 | 49.62 | a | 60.47 | d | ||
1972 | 51.55 | 56.09 | b | 61.03 | n | 63.67 | a | 70.56 | 79.21 | a | 86.54 | q | 83.72 | b | 77.52 | b | 64.95 | ----- | z | 43.56 | 65.65 | c | ||||
1973 | 40.35 | 45.56 | a | 46.63 | ----- | z | 69.39 | ----- | z | 83.23 | a | 82.05 | 72.98 | 60.83 | a | 50.24 | e | 40.76 | h | 61.25 | c | |||||
1974 | 43.12 | b | 45.00 | j | 54.93 | c | 58.29 | a | 67.86 | f | 79.56 | f | 82.58 | 80.18 | 75.22 | 67.97 | m | ----- | z | 38.47 | p | 65.72 | f | |||
1975 | 41.98 | g | 46.80 | c | 50.97 | b | 53.91 | c | 65.55 | a | 75.58 | 83.69 | 80.32 | a | 73.03 | a | 59.78 | m | 46.90 | e | 42.17 | k | 64.08 | c | ||
1976 | 40.63 | d | 46.40 | 54.38 | j | 61.12 | ----- | z | 79.08 | 85.11 | 83.93 | a | 75.98 | 61.80 | d | 51.38 | 42.02 | 62.75 | b | |||||||
1977 | 45.79 | 50.71 | 46.90 | 63.33 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.68 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 44.29 | 48.84 | 53.08 | 60.68 | 68.38 | 77.18 | 83.97 | 82.50 | 76.38 | 64.73 | 52.41 | 44.78 | 63.11 | |||||||||||||
S.D. | 2.73 | 3.32 | 2.78 | 2.64 | 2.47 | 2.34 | 1.56 | 1.87 | 2.02 | 2.43 | 2.79 | 2.41 | 0.68 | |||||||||||||
SKEW | 0.46 | 0.37 | -0.41 | -0.09 | -0.25 | 0.28 | -0.21 | 0.46 | -0.14 | -0.34 | 0.04 | -0.47 | -0.14 | |||||||||||||
MAX | 51.55 | 56.91 | 58.40 | 67.13 | 73.91 | 81.55 | 86.40 | 87.18 | 79.90 | 69.40 | 59.15 | 49.62 | 64.44 | |||||||||||||
MIN | 39.87 | 41.97 | 46.63 | 53.91 | 62.71 | 73.35 | 80.66 | 79.05 | 72.98 | 58.63 | 46.90 | 37.86 | 61.76 | |||||||||||||
YRS | 39 | 39 | 39 | 39 | 35 | 34 | 34 | 34 | 34 | 33 | 37 | 36 | 22 |