YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1894 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1896 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 53.78 | v | 69.07 | 75.42 | 88.43 | 86.65 | 81.68 | 79.87 | 77.26 | 68.13 | 49.26 | 75.08 | c | |||||||||
1910 | 57.87 | 60.18 | 71.58 | 74.33 | 82.71 | 87.93 | 90.29 | 88.74 | 87.03 | 77.35 | 68.97 | 62.52 | 75.79 | |||||||||||||
1911 | 58.84 | 53.46 | 66.90 | 69.13 | 77.48 | 85.27 | 82.00 | 85.23 | 81.93 | 72.13 | 66.83 | 56.45 | 71.31 | |||||||||||||
1912 | 62.23 | a | 62.90 | 56.57 | a | 61.55 | a | 74.39 | 85.33 | 85.44 | d | ----- | z | 81.17 | 68.97 | 69.23 | 55.00 | a | 69.34 | a | ||||||
1913 | 55.74 | 53.29 | 60.94 | 70.97 | 77.07 | a | 82.60 | 85.68 | 82.61 | 78.07 | 75.68 | 61.40 | 52.68 | 69.73 | ||||||||||||
1914 | 58.06 | 59.25 | d | 67.52 | 72.41 | a | 77.31 | e | 84.79 | a | 82.13 | 87.03 | 86.70 | 75.87 | 72.23 | 52.77 | 73.01 | |||||||||
1915 | 54.37 | a | 56.43 | 63.70 | a | 67.97 | 71.16 | 82.70 | 85.74 | 86.35 | 78.40 | 76.03 | 60.70 | 53.58 | 69.76 | |||||||||||
1916 | 46.00 | 61.38 | 64.52 | b | 69.13 | 74.81 | 86.30 | 87.10 | 83.81 | 78.57 | 66.84 | 61.33 | 54.71 | 69.54 | ||||||||||||
1917 | 50.45 | 52.89 | 59.48 | 66.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.27 | h | ||||
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 90.62 | f | 87.23 | i | 84.96 | h | 89.00 | l | 75.14 | q | 58.08 | d | 50.41 | i | 58.08 | k |
1919 | 51.56 | d | 48.56 | c | 58.47 | a | 71.59 | h | 80.72 | m | ----- | z | 87.11 | d | 85.56 | v | 74.60 | y | 66.94 | o | 56.43 | p | 54.55 | b | 60.05 | g |
1920 | 55.96 | d | 53.95 | i | 57.27 | i | 65.05 | k | 80.08 | s | 86.31 | n | 94.52 | d | 89.64 | t | 81.45 | s | 63.00 | r | 65.64 | p | ----- | z | 75.24 | j |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 85.36 | t | 83.56 | o | 83.86 | p | 74.86 | j | 60.90 | t | 56.00 | m | ----- | z |
1922 | 46.64 | c | 54.08 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.46 | r | 56.59 | m | 54.04 | h | 50.36 | j |
1923 | 57.00 | f | 51.93 | 57.79 | c | 65.41 | m | 83.88 | g | 91.44 | n | 87.68 | c | 84.68 | 78.09 | g | 68.54 | r | 58.61 | b | 48.32 | 64.83 | f | |||
1924 | 51.48 | j | 61.21 | e | 52.83 | a | 63.97 | a | 78.52 | 86.84 | k | 88.76 | b | ----- | z | ----- | z | 69.27 | p | ----- | z | ----- | z | 69.06 | g | |
1925 | 56.83 | s | 60.04 | e | 65.96 | h | 71.10 | i | 80.33 | a | 85.30 | c | 90.79 | c | 87.45 | t | 81.53 | 68.66 | b | 59.15 | d | 53.91 | h | 75.11 | e | |
1926 | 50.38 | b | 58.71 | 59.07 | a | 61.47 | k | 76.50 | e | 88.83 | 89.57 | a | 90.33 | a | 86.26 | k | ----- | z | 64.37 | k | 52.65 | n | 73.34 | e | ||
1927 | 54.22 | h | 53.18 | f | 57.73 | p | 65.42 | d | 79.42 | g | 84.59 | a | 89.87 | 84.36 | c | 83.73 | o | 77.82 | t | ----- | z | 47.96 | c | 74.44 | g | |
1928 | 56.25 | k | 53.75 | i | 62.48 | d | 65.19 | n | 78.64 | i | 86.79 | b | 92.07 | c | 88.00 | b | 86.48 | g | 77.82 | n | 57.80 | j | 50.95 | i | 82.33 | h |
1929 | 46.26 | h | 50.12 | c | 58.69 | e | 62.28 | l | 78.81 | o | 91.87 | g | 89.00 | d | 87.19 | j | 81.48 | i | 70.55 | i | 60.52 | e | 60.11 | d | 63.69 | g |
1930 | 48.50 | i | 61.13 | e | 59.38 | b | 72.17 | g | 72.59 | i | 88.15 | c | 89.61 | h | 88.88 | o | 82.78 | c | 73.00 | l | 62.00 | p | 52.65 | e | 68.82 | g |
1931 | 53.25 | c | 53.08 | c | 66.00 | n | 72.00 | j | 80.33 | s | 89.50 | p | 93.80 | f | 85.57 | q | 83.33 | r | 72.44 | o | 48.56 | l | 48.79 | c | 51.71 | i |
1932 | 46.21 | g | 52.04 | f | 58.00 | w | 64.86 | w | 78.92 | s | 85.65 | g | 90.00 | m | 88.60 | u | 90.21 | k | 73.24 | j | ----- | z | 47.84 | l | ----- | z |
1933 | 47.43 | j | 48.82 | f | 63.43 | q | 66.43 | p | 73.90 | j | 88.18 | h | 90.39 | m | 92.00 | t | 88.50 | v | 72.90 | u | ----- | z | 61.60 | k | ----- | z |
1934 | 57.17 | h | 60.17 | d | 70.89 | l | 71.86 | i | 79.58 | s | 88.93 | o | 92.04 | f | 82.38 | w | 82.00 | u | 73.96 | h | 56.53 | k | 51.38 | r | 60.17 | k |
1935 | 46.86 | x | 49.26 | e | 50.61 | h | 63.32 | k | 64.81 | o | 84.96 | c | 88.29 | g | 77.25 | w | 80.44 | u | 66.15 | r | 47.69 | q | 43.15 | k | 67.11 | j |
1936 | ----- | z | 52.90 | h | 63.80 | k | 69.69 | n | 83.16 | f | 91.67 | c | 91.32 | 88.63 | d | 81.88 | f | 74.21 | c | 61.15 | c | 52.74 | d | 76.62 | f | |
1937 | 39.77 | a | 53.04 | b | 57.71 | c | 68.14 | i | 80.42 | 86.27 | 90.65 | 91.52 | 86.10 | 78.16 | 66.53 | 59.80 | u | 73.02 | b | |||||||
1938 | 57.41 | d | 53.61 | 58.15 | e | 68.40 | 76.16 | 87.37 | 89.23 | 87.30 | a | 87.24 | a | 75.42 | 60.47 | 56.77 | 71.46 | |||||||||
1939 | 50.30 | a | 43.75 | 61.77 | 73.92 | d | 78.74 | 88.30 | 91.11 | d | 88.43 | c | 76.74 | c | 66.00 | a | 58.07 | a | 61.21 | c | 69.86 | |||||
1940 | 50.77 | 50.08 | c | 65.52 | d | 68.50 | p | 81.59 | b | 89.97 | a | 92.26 | 89.42 | 80.50 | b | 72.39 | 58.96 | d | 60.00 | r | 73.14 | b | ||||
1941 | 50.37 | l | 54.88 | d | 62.28 | b | 60.34 | a | 74.32 | 82.53 | 89.16 | 86.29 | c | 79.93 | 66.93 | a | 63.56 | e | 54.55 | i | 72.02 | b | ||||
1942 | 54.38 | e | 53.31 | l | 57.62 | e | 65.76 | a | 76.23 | 87.30 | 93.87 | a | 88.10 | a | 84.03 | a | 72.37 | a | 65.54 | d | 56.70 | a | 72.90 | a | ||
1943 | 52.70 | a | 61.00 | r | 60.57 | a | 72.03 | a | 78.74 | 86.03 | a | 91.04 | d | 83.73 | e | 85.62 | d | 72.66 | b | 65.19 | c | ----- | z | 74.83 | b | |
1944 | 55.14 | c | 48.96 | a | 57.06 | 62.87 | 75.00 | a | 83.17 | 90.52 | 91.71 | 82.60 | 74.84 | 57.10 | 54.71 | 69.47 | ||||||||||
1945 | 52.03 | a | 55.21 | 61.13 | 64.86 | b | 76.13 | a | 86.13 | 90.87 | 87.06 | 84.57 | b | 76.26 | 64.07 | 52.18 | c | 70.88 | ||||||||
1946 | 51.45 | 56.86 | 62.59 | b | 74.79 | a | 77.06 | 91.03 | 90.43 | a | 85.13 | 82.70 | 68.52 | 56.70 | 59.45 | 71.39 | ||||||||||
1947 | 51.03 | 60.82 | 63.03 | 67.97 | a | 81.03 | 85.40 | 93.45 | 85.52 | 85.90 | 75.16 | 55.17 | 49.61 | 71.17 | ||||||||||||
1948 | 56.65 | 52.00 | a | 53.71 | 70.43 | 80.45 | 88.40 | 92.27 | a | 89.21 | b | 87.31 | a | 76.11 | d | 58.10 | a | 51.46 | e | 71.34 | ||||||
1949 | 38.90 | 49.29 | d | 58.39 | 71.59 | a | 76.96 | h | 83.88 | e | 87.71 | n | 85.31 | o | 85.20 | o | 65.27 | p | 69.44 | l | 53.04 | e | 59.18 | f | ||
1950 | 54.58 | e | 58.90 | g | 61.41 | d | 73.50 | f | 76.67 | j | 87.75 | f | 85.50 | c | 88.81 | d | 83.54 | f | 83.59 | n | 67.95 | h | 63.68 | i | 72.57 | h |
1951 | 53.16 | f | 52.48 | e | 58.60 | f | 65.78 | g | 73.00 | k | 84.43 | b | 93.75 | c | 86.48 | f | 85.06 | l | 69.86 | q | 61.79 | p | 50.68 | i | 76.89 | i |
1952 | 50.10 | a | 53.43 | a | 49.72 | b | 65.57 | b | 78.11 | c | 84.33 | c | 89.47 | a | 90.21 | c | 84.88 | f | 82.32 | i | 56.85 | j | 51.00 | f | 70.12 | d |
1953 | 57.74 | d | 55.58 | i | 60.70 | h | 67.39 | l | 71.18 | i | 87.32 | h | 90.30 | d | 88.00 | h | 89.38 | q | 76.38 | g | 63.84 | k | 52.96 | f | 74.02 | j |
1954 | 56.71 | q | 63.96 | 57.32 | c | 74.48 | c | 77.45 | b | 85.78 | c | 90.43 | a | 85.81 | d | 86.50 | b | 78.79 | c | 69.77 | d | 56.66 | b | 75.18 | a | |
1955 | 47.29 | g | 52.82 | 62.97 | a | 69.43 | 76.63 | a | 84.71 | b | 86.81 | 83.72 | b | 88.10 | a | 80.75 | g | 65.07 | a | 57.07 | b | 72.73 | b | |||
1956 | 57.34 | b | 50.62 | 67.50 | a | 67.20 | 81.32 | 92.60 | 90.47 | a | 86.94 | 93.14 | a | 76.03 | 64.10 | 58.44 | d | 73.81 | ||||||||
1957 | 49.74 | 61.56 | a | 59.77 | 65.60 | 71.33 | a | 88.63 | 92.87 | 85.03 | 86.33 | 68.61 | 56.17 | 58.10 | b | 70.31 | ||||||||||
1958 | 56.10 | 59.21 | 54.35 | 67.07 | 82.71 | 91.77 | 96.61 | 92.07 | a | 82.67 | 72.71 | 61.97 | a | 64.61 | c | 73.49 | ||||||||||
1959 | 58.14 | b | 54.25 | 66.55 | 74.25 | b | 78.45 | 93.34 | a | 95.13 | 85.16 | 84.00 | 75.68 | 63.17 | f | 55.43 | a | 74.58 | a | |||||||
1960 | 49.40 | a | 52.40 | d | 67.39 | 72.43 | 79.94 | 94.77 | 97.45 | 94.45 | 88.67 | 72.83 | a | 63.27 | 54.77 | 73.98 | ||||||||||
1961 | 58.42 | 60.18 | 61.97 | 73.00 | 81.16 | 95.00 | 95.40 | a | 88.87 | a | 80.03 | a | 72.71 | 59.00 | a | 52.74 | 73.21 | |||||||||
1962 | 52.39 | 55.15 | a | 55.52 | 74.79 | b | 77.32 | 89.62 | a | 93.33 | a | 95.30 | a | 85.13 | 76.83 | b | 67.52 | c | 58.52 | d | 73.45 | |||||
1963 | 51.42 | 62.89 | 61.45 | b | 67.62 | a | 83.52 | 87.80 | ----- | z | 84.20 | a | 84.73 | 76.97 | 62.40 | e | 57.83 | a | 70.98 | a | ||||||
1964 | 51.79 | b | 54.50 | c | 56.46 | c | 66.56 | c | 77.77 | a | 86.17 | a | 92.00 | 86.24 | b | 80.60 | 78.07 | b | 58.86 | a | 52.19 | 70.10 | ||||
1965 | 55.23 | a | 55.04 | b | 56.32 | 64.17 | a | 72.81 | 81.33 | 91.11 | d | 90.41 | b | 79.70 | 79.62 | b | 63.93 | b | 51.52 | b | 70.10 | |||||
1966 | 48.82 | c | 49.56 | a | 64.16 | 72.15 | d | 80.41 | b | 87.13 | 92.61 | 88.41 | d | 82.33 | 73.77 | 65.05 | i | 53.61 | 72.09 | a | ||||||
1967 | 56.59 | b | 60.88 | b | 66.96 | d | 64.96 | c | 78.13 | a | 83.93 | 90.32 | 87.45 | b | 84.00 | 79.73 | a | 66.73 | ----- | z | 74.52 | a | ||||
1968 | 52.52 | 59.96 | a | 60.06 | 65.72 | a | 76.00 | c | 89.00 | 88.42 | 83.90 | a | 85.33 | 76.16 | 60.38 | a | 51.53 | a | 70.75 | |||||||
1969 | 54.17 | b | 53.11 | 58.13 | 71.23 | 79.10 | 86.13 | 91.00 | b | 93.76 | b | 85.60 | 69.97 | 61.17 | 56.80 | a | 71.68 | |||||||||
1970 | 53.87 | a | 60.29 | 58.90 | 65.17 | 80.32 | 89.00 | 94.77 | 88.06 | 79.43 | 68.83 | a | 63.13 | 54.43 | c | 71.35 | ||||||||||
1971 | 57.47 | a | 56.25 | d | 65.61 | 67.86 | b | 74.10 | a | 87.17 | 93.71 | 84.74 | 82.97 | 66.52 | 59.73 | 46.41 | b | 70.21 | ||||||||
1972 | 54.48 | 60.31 | 72.17 | b | 71.12 | e | 78.93 | d | 86.36 | e | 93.04 | c | 88.25 | c | 83.10 | 67.74 | d | 54.90 | a | 50.73 | a | 71.76 | ||||
1973 | 47.83 | a | 51.46 | 49.34 | b | 64.67 | c | 77.19 | 86.69 | a | 90.45 | 89.03 | 85.45 | a | 76.65 | 60.33 | 57.68 | 69.73 | ||||||||
1974 | 50.93 | c | 57.92 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.43 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 53.00 | 55.56 | 60.67 | 68.56 | 77.82 | 87.10 | 90.48 | 87.52 | 83.50 | 73.56 | 62.19 | 54.57 | 71.43 | |||||||||||||
S.D. | 4.57 | 4.62 | 4.90 | 3.83 | 2.89 | 3.10 | 3.28 | 3.09 | 3.39 | 3.96 | 4.21 | 3.98 | 1.65 | |||||||||||||
SKEW | -0.93 | -0.10 | 0.08 | -0.01 | -0.23 | 0.67 | -0.41 | 0.51 | 0.24 | -0.44 | 0.38 | 0.25 | 0.86 | |||||||||||||
MAX | 62.23 | 63.96 | 72.17 | 74.79 | 83.52 | 95.00 | 97.45 | 95.30 | 93.14 | 79.73 | 72.23 | 64.61 | 75.79 | |||||||||||||
MIN | 38.90 | 43.75 | 49.34 | 60.34 | 71.16 | 81.33 | 82.00 | 81.68 | 76.74 | 66.00 | 54.90 | 46.41 | 69.47 | |||||||||||||
YRS | 47 | 53 | 50 | 43 | 44 | 50 | 53 | 46 | 42 | 41 | 43 | 43 | 27 |