YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1901 | ----- | z | ----- | z | ----- | z | ----- | z | 79.62 | o | 88.57 | 97.90 | 92.74 | 86.00 | 81.17 | h | ----- | z | ----- | z | 91.30 | h | ||||
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | 60.50 | f | 71.32 | 76.13 | 85.77 | 92.77 | 95.16 | 96.19 | 91.80 | ----- | z | 65.73 | ----- | z | 84.36 | d | ||||||||
1911 | ----- | z | 52.71 | 66.77 | 70.93 | 79.71 | 90.33 | 94.06 | 94.00 | 86.40 | 76.23 | 63.70 | 51.67 | a | 75.14 | a | ||||||||||
1912 | ----- | z | 63.38 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.90 | 82.90 | 70.04 | c | 67.18 | b | 52.68 | 72.54 | g | |||
1913 | 51.16 | 54.77 | b | 64.07 | a | 73.52 | a | 81.65 | 86.97 | 92.32 | ----- | z | 86.03 | 77.48 | 63.23 | 52.97 | 71.29 | a | ||||||||
1914 | 55.97 | 57.79 | 69.69 | b | 73.70 | j | ----- | z | 90.20 | 92.68 | 95.45 | 84.43 | 75.38 | b | 70.60 | 50.23 | 74.24 | b | ||||||||
1915 | 52.42 | ----- | z | 69.33 | m | 70.77 | 74.94 | 89.33 | 91.94 | 94.68 | 84.70 | 82.03 | 65.80 | 55.35 | 76.20 | b | ||||||||||
1916 | 49.03 | 64.46 | a | 71.29 | 75.03 | 79.26 | 90.53 | 93.58 | 88.73 | a | 87.48 | a | 71.94 | 65.20 | 51.55 | 74.01 | ||||||||||
1917 | 46.94 | 57.04 | 62.39 | 70.73 | 73.06 | 93.00 | 96.48 | 93.93 | a | 88.07 | 81.90 | b | 70.38 | a | 66.19 | 75.01 | ||||||||||
1918 | 55.74 | 60.68 | 64.00 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.14 | i | ||
1919 | 53.00 | 54.64 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.00 | k | |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 92.97 | ----- | z | ----- | z | ----- | z | 54.42 | 73.69 | j | ||
1921 | 55.55 | 63.39 | 68.19 | 71.28 | a | 77.65 | 93.07 | 95.65 | 91.57 | h | 89.13 | 83.00 | c | 69.77 | 57.87 | 74.96 | a | |||||||||
1922 | 52.45 | 55.68 | 62.32 | 68.10 | 82.77 | 94.07 | 96.77 | 93.55 | ----- | z | ----- | z | ----- | z | ----- | z | 75.71 | d | ||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.62 | o | ----- | z |
1924 | 49.03 | 59.62 | 47.46 | c | 66.27 | 76.92 | s | 97.17 | g | 94.23 | 96.90 | b | 90.34 | a | 77.39 | 78.17 | 52.43 | a | 71.18 | b | ||||||
1925 | 54.94 | 63.82 | 60.67 | v | 73.65 | d | ----- | z | ----- | z | ----- | z | 90.39 | 85.37 | 73.45 | t | 65.17 | g | 59.23 | 71.23 | f | |||||
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 92.38 | e | 87.60 | 80.06 | 69.87 | ----- | z | 82.48 | h | |||
1927 | ----- | z | ----- | z | ----- | z | 73.07 | b | 83.69 | b | 92.97 | 96.77 | 92.57 | h | 87.17 | 80.84 | ----- | z | ----- | z | 85.75 | f | ||||
1928 | ----- | z | ----- | z | 66.48 | b | 68.04 | c | 84.15 | d | 92.92 | e | 98.29 | 94.91 | h | 90.59 | m | 75.15 | e | ----- | z | 51.29 | j | 80.84 | f | |
1929 | 51.50 | e | 52.73 | b | 64.78 | d | 69.70 | 82.69 | b | 91.64 | b | 96.27 | a | 93.83 | a | 86.38 | a | 78.48 | 67.45 | a | 67.29 | q | 75.95 | a | ||
1930 | 48.32 | l | 62.90 | h | 63.92 | e | 76.47 | 74.07 | b | 93.77 | 95.00 | a | 92.22 | d | 85.03 | 73.19 | d | 60.80 | 55.06 | 76.95 | b | |||||
1931 | 54.97 | b | 55.56 | c | 65.34 | b | 75.13 | g | 84.76 | f | 91.27 | 100.94 | 90.35 | h | 86.59 | c | 77.68 | 55.75 | b | 49.17 | b | 70.81 | c | |||
1932 | 47.45 | 56.00 | b | 65.67 | a | 75.26 | c | 79.21 | c | 90.43 | 95.67 | a | 95.97 | 93.52 | a | 76.10 | 71.71 | b | 45.45 | 74.37 | ||||||
1933 | 46.53 | a | 52.85 | b | 65.77 | e | 68.11 | b | 75.29 | 92.82 | b | 99.23 | 96.07 | a | 91.17 | a | 82.90 | a | 69.14 | a | 61.86 | b | 75.14 | |||
1934 | 58.77 | a | 63.70 | a | 76.48 | 80.89 | b | 87.77 | a | 86.87 | 96.84 | 91.14 | b | 87.47 | 80.72 | b | 67.36 | b | 57.30 | a | 77.94 | |||||
1935 | 53.70 | a | 60.85 | a | 61.48 | 71.33 | 76.06 | 94.20 | 95.23 | 93.58 | 88.97 | 77.26 | 63.54 | b | 58.93 | b | 74.59 | |||||||||
1936 | 59.16 | 55.55 | 67.38 | b | 77.72 | a | 85.96 | c | 95.53 | 96.52 | 94.36 | c | 87.34 | a | 76.03 | a | 65.81 | n | 54.71 | c | 77.30 | a | ||||
1937 | 37.26 | 55.25 | 61.55 | 71.03 | a | 84.61 | 90.93 | 95.84 | 97.21 | b | 90.63 | 80.84 | 69.37 | 58.14 | b | 74.39 | ||||||||||
1938 | 58.00 | 54.61 | 59.18 | c | 72.75 | b | 80.20 | a | 91.57 | 96.03 | 94.55 | b | 90.86 | b | 76.28 | b | 62.47 | 58.33 | a | 74.57 | ||||||
1939 | 53.94 | 46.75 | 66.10 | a | 75.53 | k | 83.90 | a | 92.00 | 96.77 | a | 92.64 | c | 77.00 | e | 71.90 | k | 68.16 | e | 63.41 | b | 74.07 | b | |||
1940 | 56.31 | b | 56.41 | 67.87 | 71.83 | 86.70 | a | 95.90 | 95.91 | i | 95.71 | 82.80 | 77.48 | 62.23 | 57.45 | 73.70 | a | |||||||||
1941 | 54.13 | a | 59.18 | 61.77 | a | 63.33 | c | 80.19 | 87.27 | 95.77 | e | 88.43 | j | 84.13 | 69.90 | 65.83 | f | 54.50 | a | 71.02 | b | |||||
1942 | 57.37 | a | 54.79 | 63.93 | a | 70.44 | c | 80.53 | a | 91.74 | c | 98.61 | 93.45 | 89.29 | b | 77.29 | 68.79 | b | 60.33 | g | 76.93 | a | ||||
1943 | 57.07 | c | 63.84 | c | ----- | z | 75.97 | 88.52 | 92.67 | ----- | z | ----- | z | ----- | z | ----- | z | 72.50 | h | 56.55 | k | 75.61 | g | |||
1944 | ----- | z | 54.71 | h | 66.13 | p | 70.26 | k | 81.76 | j | 89.59 | h | 96.84 | l | 97.48 | f | 92.95 | j | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | 61.63 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.63 | k |
1946 | ----- | z | ----- | z | 67.52 | j | 79.76 | a | ----- | z | 96.30 | j | 96.48 | 96.37 | a | ----- | z | ----- | z | ----- | z | ----- | z | 90.87 | i | |
1947 | ----- | z | ----- | z | ----- | z | 78.80 | t | 90.50 | i | 92.00 | j | 99.76 | n | 92.77 | a | 93.41 | a | 78.42 | 57.67 | 51.60 | a | 74.77 | g | ||
1948 | 59.83 | a | 54.44 | d | 57.03 | 72.68 | b | 84.88 | f | 92.44 | c | 96.21 | b | 94.96 | e | 93.21 | a | 78.61 | 61.37 | 53.67 | a | 74.04 | a | |||
1949 | 39.38 | e | 50.74 | a | 63.77 | a | 76.40 | 80.19 | 91.53 | 96.42 | 94.88 | g | 91.23 | 74.23 | 73.93 | 53.42 | 71.93 | a | ||||||||
1950 | 52.87 | 62.31 | b | 68.15 | d | 79.70 | j | 82.50 | a | 92.34 | a | 94.03 | 96.87 | a | 86.60 | e | 86.12 | e | 72.15 | c | 67.41 | i | 79.39 | b | ||
1951 | 58.69 | e | 59.78 | a | 65.76 | b | 73.85 | c | 82.89 | c | 92.41 | c | 99.63 | a | 92.32 | 92.14 | h | 78.80 | f | 63.30 | c | 48.83 | h | 76.51 | c | |
1952 | 51.93 | a | 59.00 | 56.83 | b | 74.50 | f | 85.97 | b | 89.86 | h | 96.48 | 96.93 | a | 92.24 | e | 87.77 | 60.48 | a | 57.70 | k | 76.40 | c | |||
1953 | 63.72 | f | 58.71 | k | 69.75 | c | 71.93 | c | 76.13 | a | 92.45 | a | 96.37 | a | 93.45 | 93.59 | h | 80.38 | j | 68.33 | f | 57.67 | g | 83.35 | f | |
1954 | 58.06 | n | 68.50 | d | 61.56 | d | 78.50 | j | 88.09 | i | 90.56 | l | 97.85 | d | 93.62 | b | 91.15 | c | 86.00 | i | 72.00 | g | 57.70 | d | 78.40 | f |
1955 | 49.67 | g | 53.65 | k | 66.22 | d | 70.00 | j | 81.64 | i | 92.43 | g | 94.24 | f | 91.59 | i | 96.37 | k | 81.48 | h | 66.19 | c | 57.46 | r | 66.20 | j |
1956 | 59.86 | c | 54.46 | e | 67.95 | i | 71.68 | h | 84.21 | b | 96.00 | j | 95.50 | e | 92.96 | d | 93.00 | 77.79 | b | 65.65 | j | 58.85 | e | 77.08 | d | |
1957 | 50.60 | a | 63.38 | b | 65.10 | 70.66 | a | 76.59 | b | 94.33 | f | 98.14 | i | 93.35 | e | 90.93 | b | 71.15 | d | 57.92 | e | 58.85 | d | 69.85 | b | |
1958 | 57.50 | e | 60.42 | d | 56.85 | e | 69.89 | b | 87.13 | a | 93.52 | c | ----- | z | 96.62 | e | 87.54 | b | 78.86 | b | 64.88 | f | 64.93 | b | 75.33 | b |
1959 | 58.52 | b | 54.04 | a | 68.03 | b | 79.33 | c | 80.96 | d | 96.32 | b | 100.55 | 91.57 | a | 86.00 | a | 78.97 | b | 65.61 | b | 56.16 | 76.34 | |||
1960 | 50.10 | a | 54.30 | f | 69.38 | b | 75.97 | 82.44 | f | 96.27 | 99.77 | a | 97.00 | 90.57 | b | 77.38 | e | 65.89 | c | 55.86 | c | 77.82 | b | |||
1961 | 59.68 | 62.48 | a | 65.42 | 74.56 | c | 81.38 | b | 96.67 | 99.50 | a | 93.84 | 85.20 | 77.94 | 60.82 | b | 51.26 | d | 75.73 | |||||||
1962 | 54.10 | 58.31 | b | 59.39 | 80.60 | 79.20 | a | 92.54 | f | 96.13 | 97.65 | 90.87 | 79.03 | b | 70.14 | a | 60.30 | d | 75.06 | a | ||||||
1963 | 54.03 | a | 66.50 | 64.34 | b | 68.67 | c | 85.50 | a | 87.11 | b | 98.31 | b | 93.26 | 90.19 | d | 80.81 | d | 64.57 | g | 58.27 | e | 77.00 | a | ||
1964 | 53.47 | a | 56.63 | b | 61.07 | c | 68.97 | 80.58 | e | 89.67 | 98.00 | a | 91.92 | e | 87.93 | 85.07 | c | 61.42 | d | 55.13 | 74.15 | |||||
1965 | 57.93 | a | 59.93 | a | 60.41 | b | 66.73 | 76.52 | 84.97 | 94.03 | b | 93.94 | 83.82 | b | 82.74 | d | 65.82 | b | 53.35 | 73.35 | ||||||
1966 | 53.63 | a | 53.61 | 68.58 | 76.18 | b | 83.95 | j | 92.78 | u | 94.74 | d | 96.17 | g | 88.31 | a | 76.16 | f | 66.04 | g | 54.70 | d | 69.96 | e | ||
1967 | 57.85 | d | 63.31 | b | 68.80 | f | 66.74 | c | 81.32 | c | 86.52 | c | 96.81 | d | 93.04 | d | 81.52 | e | 81.31 | e | 68.16 | e | 47.77 | e | 74.94 | a |
1968 | 54.10 | b | 63.42 | c | 65.23 | a | 68.85 | c | 80.32 | c | 91.79 | b | 95.19 | j | 90.70 | u | 88.32 | e | 77.43 | c | 64.87 | g | 51.79 | b | 71.25 | c |
1969 | 55.97 | b | 53.67 | a | 59.37 | a | 72.43 | 82.77 | 87.62 | a | 94.60 | a | 96.08 | g | 89.41 | m | 71.39 | 63.59 | c | 60.20 | a | 70.16 | b | |||
1970 | 55.39 | 63.30 | a | 61.35 | 66.87 | 83.71 | 91.04 | c | 96.97 | 95.10 | 86.27 | 73.48 | 65.43 | 53.00 | a | 74.33 | ||||||||||
1971 | 57.10 | 58.50 | 67.74 | 72.03 | 76.29 | 90.77 | 99.26 | 91.00 | a | 86.71 | b | 69.84 | 62.04 | d | 47.90 | 73.27 | ||||||||||
1972 | 55.77 | 64.55 | 75.06 | 75.03 | 83.19 | 91.00 | 98.47 | a | 93.10 | 85.07 | a | 68.52 | 57.93 | a | 50.14 | c | 74.82 | |||||||||
1973 | 49.68 | 55.18 | 54.45 | b | 68.33 | 83.80 | a | 92.40 | 97.42 | 94.13 | a | 88.67 | 79.35 | 63.20 | 59.20 | a | 73.82 | |||||||||
1974 | 51.39 | c | 59.18 | 65.35 | 72.43 | 84.87 | 97.41 | c | 94.48 | 94.68 | 88.83 | 77.03 | 66.35 | j | 52.45 | 76.19 | a | |||||||||
1975 | 54.97 | a | 57.11 | 59.71 | 64.10 | a | 79.74 | 90.77 | 96.39 | 95.07 | b | 89.03 | a | 77.35 | 64.90 | a | 57.97 | 73.93 | ||||||||
1976 | 59.27 | a | 60.57 | a | 61.60 | a | 69.88 | e | 82.68 | 90.14 | a | 94.29 | 92.90 | a | 82.83 | 73.81 | 68.36 | b | 59.42 | 74.65 | ||||||
1977 | 54.29 | 64.86 | 62.07 | b | 75.59 | c | 73.87 | a | 93.27 | 94.68 | 93.10 | 86.90 | 78.84 | 66.57 | 59.42 | 75.29 | ||||||||||
1978 | 53.03 | b | 55.50 | b | 64.13 | 66.73 | 78.32 | 91.68 | b | 96.45 | 93.39 | 85.70 | 80.67 | a | 60.26 | c | 49.03 | 72.91 | ||||||||
1979 | 44.33 | a | 55.32 | 59.84 | 71.28 | a | 78.71 | 91.17 | 96.86 | b | 90.16 | 93.30 | 79.73 | a | 60.57 | 60.14 | c | 73.45 | ||||||||
1980 | 54.37 | a | 60.17 | 58.78 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.77 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 53.67 | 58.47 | 64.02 | 72.05 | 81.13 | 91.63 | 96.39 | 93.84 | 87.79 | 77.72 | 65.42 | 55.52 | 74.57 | |||||||||||||
S.D. | 4.70 | 4.47 | 4.91 | 4.06 | 3.86 | 2.71 | 2.00 | 2.01 | 3.33 | 4.15 | 4.57 | 4.48 | 1.13 | |||||||||||||
SKEW | -1.36 | -0.00 | -0.33 | 0.17 | -0.22 | -0.21 | 0.11 | -0.16 | -0.43 | -0.12 | 0.22 | 0.08 | 1.22 | |||||||||||||
MAX | 59.86 | 68.50 | 76.48 | 80.89 | 88.52 | 97.41 | 100.94 | 97.65 | 93.52 | 87.77 | 78.17 | 66.19 | 77.94 | |||||||||||||
MIN | 37.26 | 46.75 | 47.46 | 63.33 | 73.06 | 84.97 | 91.94 | 88.73 | 77.00 | 68.52 | 55.75 | 45.45 | 72.91 | |||||||||||||
YRS | 55 | 54 | 57 | 53 | 51 | 52 | 55 | 54 | 57 | 53 | 48 | 51 | 21 |