YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 95.41 | b | 96.57 | a | 85.97 | 80.58 | 69.07 | 59.23 | 81.14 | f | ||||
1963 | 58.33 | d | 75.38 | o | ----- | z | 85.65 | j | 89.42 | 92.07 | 96.71 | 93.77 | 87.13 | 82.55 | 68.13 | 52.55 | 80.07 | c | ||||||||
1964 | 58.16 | 57.31 | 71.26 | 81.50 | 90.16 | 95.63 | 97.45 | 96.84 | 85.40 | 79.87 | a | 68.37 | 61.58 | 78.63 | ||||||||||||
1965 | 63.16 | 60.25 | 64.71 | 82.90 | 85.71 | 92.33 | 96.74 | 91.80 | a | 88.34 | a | 79.23 | 71.73 | 60.90 | 78.15 | |||||||||||
1966 | 51.90 | 58.08 | c | 72.84 | 77.53 | 84.97 | 91.48 | a | 96.42 | 89.73 | a | 85.33 | 77.32 | 72.10 | 58.00 | 76.31 | ||||||||||
1967 | 62.81 | 64.69 | b | 78.42 | 84.03 | 88.77 | 94.30 | 94.35 | 91.20 | a | 82.87 | 80.70 | a | 65.63 | 55.10 | a | 78.57 | |||||||||
1968 | 56.32 | 58.59 | 66.16 | 76.23 | 85.94 | 93.77 | 90.10 | 90.77 | 85.87 | 81.07 | a | 62.30 | 60.45 | 75.63 | ||||||||||||
1969 | 64.13 | 61.14 | 60.97 | 78.62 | a | 84.90 | 92.77 | 96.84 | 95.68 | 85.50 | 73.10 | 65.07 | 62.00 | a | 76.73 | |||||||||||
1970 | 58.58 | 63.61 | 66.13 | 78.90 | a | 86.40 | a | 90.87 | 95.65 | 94.32 | 85.60 | 73.94 | 68.63 | 65.03 | 77.30 | |||||||||||
1971 | 62.03 | 64.96 | 74.52 | 78.97 | 87.45 | 92.30 | 95.29 | 85.52 | 84.37 | 76.00 | 64.53 | 59.19 | 77.09 | |||||||||||||
1972 | 61.42 | 68.10 | 78.03 | 85.47 | 83.71 | 92.77 | 91.52 | 88.71 | 86.60 | 77.90 | 59.33 | 58.13 | 77.64 | |||||||||||||
1973 | 49.65 | 55.75 | 69.16 | 73.73 | 84.94 | 93.33 | 91.81 | 93.10 | 87.03 | 82.68 | 73.69 | a | 64.06 | 76.58 | ||||||||||||
1974 | 62.13 | 64.96 | 79.77 | 82.20 | 92.26 | 94.73 | 94.74 | 88.45 | 76.47 | 73.94 | 63.50 | 56.32 | 77.46 | |||||||||||||
1975 | 58.58 | 62.71 | 71.77 | 79.24 | a | 84.71 | 93.77 | 87.32 | 90.68 | 82.61 | b | 79.71 | 68.03 | a | 61.24 | b | 76.70 | |||||||||
1976 | 59.23 | 72.46 | a | 71.23 | 78.63 | 83.07 | a | 92.13 | 85.84 | 92.19 | 84.47 | 73.45 | 59.43 | 60.62 | b | 76.06 | ||||||||||
1977 | 56.81 | d | 65.89 | 70.45 | 76.90 | 87.48 | 95.07 | 94.74 | 96.65 | 94.82 | b | 80.03 | 70.77 | 64.70 | a | 79.53 | ||||||||||
1978 | 51.00 | 56.46 | 72.33 | a | 85.10 | 88.74 | 93.07 | a | 96.13 | 93.26 | 82.13 | 77.33 | a | 63.00 | 58.30 | a | 76.41 | |||||||||
1979 | 48.77 | a | 61.04 | 67.77 | 78.87 | 84.72 | b | 89.93 | 94.40 | a | 91.19 | 88.40 | 85.43 | a | 63.13 | 59.39 | 76.09 | |||||||||
1980 | 58.20 | a | 64.72 | 71.23 | 79.97 | 86.71 | 98.37 | 100.06 | 94.52 | 85.33 | 76.45 | 62.41 | a | 63.16 | 78.43 | |||||||||||
1981 | 56.39 | 63.18 | 65.90 | 78.20 | 84.97 | 94.67 | 95.77 | 91.48 | 86.63 | 75.42 | 71.43 | 64.39 | 77.37 | |||||||||||||
1982 | 59.17 | a | 60.08 | b | 73.54 | c | 77.45 | a | 84.29 | 93.59 | a | 95.35 | 95.45 | 89.67 | 78.26 | 62.45 | a | 51.93 | b | 76.77 | ||||||
1983 | 55.30 | a | 62.36 | 71.97 | b | 76.03 | 88.55 | 95.87 | 97.42 | 97.48 | 91.45 | a | 81.10 | 69.36 | b | 49.84 | f | 80.63 | a | |||||||
1984 | 51.20 | a | 65.11 | a | 70.97 | 80.41 | a | 88.84 | 91.20 | 93.48 | 92.06 | 85.17 | 72.19 | 63.77 | 59.70 | a | 76.18 | |||||||||
1985 | 53.06 | 59.18 | 71.63 | a | 82.20 | 89.81 | 91.87 | 95.37 | a | 96.81 | 86.93 | 73.94 | 69.53 | 59.00 | 77.44 | |||||||||||
1986 | 63.94 | 66.82 | 74.77 | a | 84.13 | 88.33 | a | 88.83 | 94.16 | 90.60 | a | 85.17 | 73.37 | a | 63.83 | 54.10 | 77.34 | |||||||||
1987 | 57.10 | 59.71 | 66.20 | a | 76.30 | 81.71 | 89.63 | 93.90 | 93.81 | 86.73 | 81.77 | 66.10 | a | 60.27 | a | 76.10 | ||||||||||
1988 | 53.39 | 64.10 | 72.61 | 78.97 | 84.60 | a | 92.90 | 90.52 | b | 90.13 | 86.63 | 81.19 | 71.93 | a | 59.39 | 77.20 | ||||||||||
1989 | 62.10 | 60.57 | 76.19 | 84.77 | 92.10 | 92.31 | a | 95.42 | 92.07 | a | 86.30 | 82.06 | 70.10 | 55.84 | 79.15 | |||||||||||
1990 | 62.29 | 66.36 | 69.94 | 79.40 | 87.26 | 99.83 | 88.00 | a | 90.55 | 85.43 | 79.94 | 69.80 | 59.03 | 78.15 | ||||||||||||
1991 | 52.74 | 65.96 | 73.42 | 82.50 | 90.87 | a | 93.64 | b | 91.32 | 90.45 | 81.38 | a | 81.32 | 62.47 | 56.23 | 76.86 | ||||||||||
1992 | 53.00 | a | 64.82 | a | 72.10 | 81.14 | a | 82.03 | a | 91.03 | 93.76 | b | 90.60 | a | 90.03 | 82.19 | 63.93 | b | 60.26 | 77.07 | ||||||
1993 | 57.21 | b | 60.79 | 71.32 | 80.56 | e | 86.60 | a | 92.59 | a | 95.52 | 93.58 | e | 87.80 | e | 78.80 | a | 66.17 | 62.00 | 77.74 | ||||||
1994 | 59.43 | a | 64.63 | a | 73.13 | 82.15 | j | 88.33 | m | 98.73 | ----- | z | 94.48 | 88.07 | a | 80.19 | 69.69 | a | 63.65 | e | 76.89 | c | ||||
1995 | 60.68 | c | 68.78 | a | 69.10 | a | 81.20 | 85.16 | 90.10 | i | 97.29 | 93.87 | 87.80 | 82.61 | 70.11 | b | 61.80 | a | 78.04 | a | ||||||
1996 | 62.00 | a | 68.24 | 70.32 | c | 82.80 | 96.28 | b | 96.59 | a | 96.06 | 90.87 | 85.53 | 81.37 | a | 69.62 | d | 64.90 | 80.38 | |||||||
1997 | 54.77 | 56.12 | b | 75.61 | 74.23 | 86.19 | 92.27 | 95.31 | b | 95.19 | ----- | z | 78.65 | 66.17 | 56.03 | 75.50 | a | |||||||||
1998 | 64.32 | c | 63.12 | d | 70.75 | g | 80.25 | b | 94.35 | 100.93 | a | 99.86 | b | 92.73 | a | 92.52 | a | 80.61 | ----- | z | 59.75 | c | 82.85 | b | ||
1999 | 64.77 | 72.75 | 70.33 | a | 82.27 | 88.03 | 91.90 | a | 95.03 | 96.42 | 89.00 | a | 84.71 | q | ----- | z | ----- | z | 83.39 | c | ||||||
2000 | ----- | z | ----- | z | ----- | z | 83.77 | 94.70 | a | 90.33 | 96.77 | 96.16 | f | 92.96 | b | 75.80 | a | 59.04 | b | 53.86 | c | 80.90 | d | |||
2001 | 55.04 | c | 62.92 | b | 64.52 | b | 84.03 | a | 90.81 | d | 97.24 | a | 99.18 | c | 95.45 | b | 88.54 | d | 83.14 | c | 66.59 | c | 59.74 | d | 78.93 | |
2002 | 60.86 | c | 59.61 | e | 73.30 | h | 81.00 | e | 89.24 | f | 95.77 | h | 95.76 | n | 97.27 | e | 89.68 | e | 74.04 | g | 61.77 | d | 56.64 | c | 72.40 | e |
2003 | 61.91 | i | 63.13 | e | 70.44 | m | 83.95 | j | 93.15 | k | 94.00 | s | 95.14 | x | 95.80 | u | 88.22 | l | 81.04 | g | 70.13 | o | 67.71 | q | 63.13 | k |
2004 | ----- | z | 57.88 | m | 71.17 | s | 77.52 | i | 89.81 | j | 94.00 | q | 93.38 | o | 90.83 | m | 83.94 | m | 76.33 | s | 64.12 | m | 58.33 | y | ----- | z |
2005 | 60.63 | l | 60.91 | f | 69.72 | f | 78.21 | k | 86.28 | f | 95.72 | a | 94.66 | b | 92.74 | 93.03 | 78.42 | 71.47 | 61.60 | a | 83.95 | e | ||||
2006 | 66.87 | a | 66.36 | 70.81 | 84.25 | f | 93.10 | 96.63 | 97.50 | a | 93.50 | k | 79.29 | p | 77.17 | a | 72.23 | 58.80 | a | 77.72 | c | |||||
2007 | 49.61 | 64.68 | i | 72.58 | 71.11 | u | 75.87 | p | 90.25 | n | 93.24 | j | 94.32 | 90.30 | c | 85.53 | a | 70.50 | 61.73 | a | 74.94 | e | ||||
2008 | 60.31 | b | 71.16 | d | 75.55 | 82.10 | 90.94 | 100.03 | a | 93.52 | d | 92.77 | a | 82.80 | 78.65 | 68.33 | 62.72 | b | 79.91 | |||||||
2009 | 62.53 | a | 72.40 | h | 75.90 | a | 82.15 | j | 88.58 | 92.83 | 92.23 | 94.77 | 84.21 | b | 76.55 | 70.33 | 53.58 | 79.15 | b | |||||||
2010 | 56.58 | 54.43 | 68.74 | 76.43 | 79.24 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.05 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 58.09 | 63.12 | 71.31 | 80.22 | 87.76 | 93.81 | 94.63 | 92.98 | 86.77 | 78.90 | 66.95 | 59.48 | 77.50 | |||||||||||||
S.D. | 4.63 | 4.37 | 3.97 | 3.01 | 3.46 | 2.88 | 3.05 | 2.68 | 3.40 | 3.34 | 3.94 | 3.39 | 1.20 | |||||||||||||
SKEW | -0.28 | 0.15 | -0.25 | -0.18 | 0.52 | 0.76 | -0.92 | -0.30 | -0.10 | -0.22 | -0.31 | -0.38 | 0.67 | |||||||||||||
MAX | 66.87 | 72.75 | 79.77 | 85.47 | 96.28 | 100.93 | 100.06 | 97.48 | 94.82 | 85.53 | 73.69 | 65.03 | 80.38 | |||||||||||||
MIN | 48.77 | 54.43 | 60.97 | 73.73 | 81.71 | 88.83 | 85.84 | 85.52 | 76.47 | 72.19 | 59.04 | 51.93 | 75.63 | |||||||||||||
YRS | 44 | 42 | 41 | 40 | 41 | 42 | 43 | 44 | 44 | 44 | 44 | 44 | 32 |