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 | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | 63.29 | 80.67 | f | 81.12 | o | 89.16 | k | ----- | z | 92.84 | f | ----- | z | 78.63 | d | 73.12 | d | 62.08 | f | 71.68 | i | |
1966 | 50.03 | 56.71 | 71.68 | 75.07 | c | 82.14 | b | 89.81 | d | 96.77 | a | 91.13 | a | 85.62 | f | 76.43 | c | 73.31 | d | 59.74 | 74.80 | a | ||||
1967 | 61.55 | b | 63.11 | 77.74 | 84.40 | 88.48 | 91.45 | a | 93.16 | 91.84 | 82.10 | 79.87 | 65.92 | d | 55.07 | b | 77.89 | |||||||||
1968 | 53.45 | 56.66 | 64.94 | 72.93 | 84.35 | 91.40 | 90.23 | 93.00 | 86.03 | 81.81 | 63.73 | 59.58 | 74.84 | |||||||||||||
1969 | 60.58 | 61.69 | b | 60.48 | 77.47 | 82.19 | 93.50 | 98.10 | 96.29 | 83.90 | 72.39 | 64.71 | b | 62.39 | 76.14 | |||||||||||
1970 | 54.81 | 60.14 | 62.71 | 77.83 | 84.48 | 91.14 | a | 95.77 | 95.42 | 85.03 | 71.93 | b | 66.90 | 65.45 | 75.97 | |||||||||||
1971 | 62.68 | 61.32 | 72.84 | 78.91 | h | 86.00 | d | 91.25 | b | 94.80 | a | 85.20 | a | 83.53 | 74.81 | 66.23 | 59.00 | 76.15 | a | |||||||
1972 | 60.65 | 63.24 | 77.41 | b | 83.46 | b | 81.81 | 91.33 | 90.48 | 87.58 | 86.00 | 75.45 | 60.73 | 57.48 | b | 76.30 | ||||||||||
1973 | 49.68 | 54.08 | b | 69.74 | 71.23 | 84.04 | c | 91.77 | 93.19 | 93.48 | 83.23 | 80.48 | b | 72.52 | a | 63.69 | b | 75.59 | ||||||||
1974 | 59.20 | a | 64.96 | 79.26 | 81.36 | b | 88.43 | a | 93.53 | 94.90 | 88.81 | 76.33 | 72.32 | c | 63.03 | a | 56.48 | 76.55 | ||||||||
1975 | 55.97 | 59.79 | 69.03 | 75.85 | c | 84.06 | 91.77 | 88.58 | 91.52 | 83.39 | b | 79.48 | 69.83 | 61.70 | d | 75.91 | ||||||||||
1976 | 58.97 | 71.21 | a | 73.65 | 79.97 | 82.35 | 91.53 | 83.93 | a | 90.73 | e | 81.87 | 69.14 | b | 59.69 | a | 58.28 | b | 75.11 | |||||||
1977 | 50.26 | 63.81 | a | 69.87 | 73.45 | a | 85.16 | 93.23 | 94.35 | 97.27 | e | 95.20 | 80.64 | c | 72.00 | d | 62.97 | b | 78.18 | |||||||
1978 | 49.95 | j | 54.48 | a | ----- | z | ----- | z | 88.36 | q | 93.00 | h | 97.35 | 92.92 | f | 83.13 | 77.00 | 64.63 | 56.28 | b | 72.15 | f | ||||
1979 | 46.71 | c | 59.68 | 69.63 | l | 79.88 | e | 84.45 | 89.77 | 94.94 | 90.75 | g | 91.93 | a | 86.45 | b | 64.41 | h | 57.78 | d | 76.84 | c | ||||
1980 | ----- | z | 61.03 | 69.23 | e | 75.92 | e | 83.06 | 94.70 | 100.52 | 94.50 | a | 86.43 | 77.42 | 62.13 | 59.81 | d | 78.62 | a | |||||||
1981 | 56.35 | 61.18 | 64.84 | 77.38 | a | 83.94 | 89.69 | a | 94.58 | 92.48 | 88.90 | 76.74 | 73.62 | a | 64.23 | 76.99 | ||||||||||
1982 | 59.60 | a | 58.15 | b | 73.61 | 78.27 | 83.55 | 89.20 | ----- | z | 97.55 | 92.33 | 79.74 | 66.47 | 56.97 | 75.95 | a | |||||||||
1983 | 55.65 | 63.17 | j | 71.94 | 78.79 | a | 87.90 | a | 91.20 | 95.71 | 97.44 | f | 90.90 | a | 79.52 | 68.93 | 46.27 | a | 76.68 | b | ||||||
1984 | 52.23 | 64.55 | ----- | z | 81.42 | d | 89.90 | 93.53 | 95.13 | 94.32 | 86.33 | 72.84 | 62.70 | 59.29 | 77.48 | a | ||||||||||
1985 | 49.90 | b | 56.14 | 70.50 | g | 82.90 | 90.59 | b | 91.27 | 94.53 | a | 97.42 | 86.33 | 75.81 | 72.00 | a | 57.42 | 77.66 | a | |||||||
1986 | 62.03 | 64.29 | 77.16 | 87.79 | k | 88.32 | 87.43 | 93.62 | b | 89.36 | f | 83.93 | 71.00 | 63.30 | 54.78 | d | 74.59 | b | ||||||||
1987 | 55.94 | 58.57 | 62.18 | c | 75.43 | b | 82.19 | 88.22 | c | 91.61 | 92.67 | d | 84.33 | 79.23 | 65.54 | d | 57.37 | a | 74.44 | |||||||
1988 | 53.42 | 60.79 | ----- | z | 80.50 | f | 83.58 | 91.23 | 89.26 | 91.33 | d | 86.87 | 78.43 | a | 72.93 | 58.75 | c | 76.66 | b | |||||||
1989 | 60.97 | a | 55.59 | a | 72.59 | b | 80.64 | b | 90.62 | b | 90.43 | b | 96.10 | 94.00 | f | 85.80 | 80.16 | 69.75 | b | 53.69 | b | 76.03 | a | |||
1990 | 62.77 | 65.21 | 67.81 | d | 76.93 | b | 86.00 | a | 97.50 | b | 82.00 | m | 91.95 | i | 81.74 | g | 77.88 | o | 65.95 | h | 56.05 | i | 76.04 | f | ||
1991 | 50.43 | h | 64.82 | 73.62 | g | 81.90 | t | 88.94 | m | 91.92 | d | 91.61 | 91.52 | 85.62 | q | 81.61 | c | 58.73 | 56.07 | a | 76.61 | e | ||||
1992 | 54.19 | 63.72 | 72.97 | 76.07 | 81.10 | 89.87 | 92.26 | 88.97 | 88.33 | 81.29 | 62.03 | 58.13 | 75.74 | |||||||||||||
1993 | 54.10 | 61.11 | 69.57 | a | 78.97 | 85.74 | 90.47 | 94.68 | 95.00 | 83.77 | 76.23 | 61.11 | b | 59.90 | 75.89 | |||||||||||
1994 | 58.10 | 59.36 | 71.90 | 79.23 | 83.29 | 98.07 | 97.10 | 94.13 | 86.24 | a | 78.20 | a | 68.07 | 60.13 | 77.82 | |||||||||||
1995 | 58.77 | 65.41 | a | 67.10 | 78.86 | a | 85.17 | a | 90.30 | 96.33 | a | 91.65 | 85.43 | 82.67 | a | 68.33 | 60.73 | a | 77.56 | |||||||
1996 | 59.35 | 65.62 | 66.23 | 77.83 | 93.77 | a | 93.93 | 95.94 | 89.90 | 81.50 | 77.74 | 67.07 | 62.06 | 77.58 | ||||||||||||
1997 | 54.58 | 54.82 | 70.42 | 68.37 | 81.45 | 87.28 | a | 94.35 | 94.03 | a | 88.87 | 78.52 | 63.57 | b | 54.93 | b | 74.27 | |||||||||
1998 | 63.10 | 61.54 | 68.23 | 78.24 | a | 94.00 | 98.28 | a | 98.45 | 90.90 | 90.87 | 79.23 | 67.30 | 57.76 | b | 78.99 | ||||||||||
1999 | 62.86 | b | 69.79 | 67.45 | 79.31 | a | 85.07 | a | 88.50 | 92.14 | b | 95.37 | a | 87.07 | a | 78.03 | 72.43 | 60.31 | b | 78.19 | ||||||
2000 | 62.19 | 69.62 | 73.55 | 79.70 | 91.06 | 87.00 | a | ----- | z | 94.52 | 90.90 | 72.71 | 57.03 | 51.29 | 75.42 | a | ||||||||||
2001 | 51.16 | 61.21 | 61.80 | a | 78.63 | 87.39 | 93.90 | 99.16 | 92.58 | e | 83.64 | h | 77.47 | a | 64.80 | 56.41 | b | 74.96 | a | |||||||
2002 | 57.94 | 56.12 | b | 66.33 | d | 78.48 | a | 85.77 | a | 90.77 | 91.03 | b | 94.71 | 85.77 | 70.36 | c | 64.83 | x | ----- | z | 77.73 | b | ||||
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 85.45 | a | 80.39 | c | 72.29 | w | ----- | z | 82.92 | j |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 92.90 | t | 78.16 | 67.07 | 50.94 | 65.39 | i | |||
2012 | 60.19 | 59.83 | 72.79 | c | 83.42 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.06 | h | ||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 56.85 | 61.33 | 69.71 | 78.11 | 85.75 | 91.56 | 94.14 | 92.77 | 86.12 | 77.44 | 66.42 | 58.14 | 76.50 | |||||||||||||
S.D. | 4.55 | 4.26 | 4.85 | 3.47 | 3.42 | 2.72 | 3.33 | 2.90 | 3.69 | 3.73 | 4.50 | 3.88 | 1.35 | |||||||||||||
SKEW | -0.39 | 0.29 | -0.02 | -0.61 | 0.82 | 0.75 | -0.75 | -0.45 | 0.16 | -0.31 | -0.03 | -0.72 | 0.08 | |||||||||||||
MAX | 63.10 | 71.21 | 79.26 | 84.40 | 94.00 | 98.28 | 100.52 | 97.55 | 95.20 | 86.45 | 73.62 | 65.45 | 78.99 | |||||||||||||
MIN | 46.71 | 54.08 | 60.48 | 68.37 | 81.10 | 87.00 | 83.93 | 85.20 | 76.33 | 69.14 | 57.03 | 46.27 | 74.27 | |||||||||||||
YRS | 35 | 37 | 33 | 33 | 35 | 36 | 34 | 31 | 34 | 39 | 36 | 36 | 20 |