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 | 27.57 | 30.45 | 48.38 | f | 55.44 | o | 63.37 | k | ----- | z | 65.03 | a | ----- | z | 45.48 | d | 41.12 | e | 33.54 | e | 40.53 | f | ||
1966 | 21.97 | 26.14 | 37.45 | 45.11 | b | 56.17 | a | 65.38 | f | 70.90 | a | 65.23 | a | 61.04 | e | 44.44 | d | 39.15 | d | 23.20 | a | 44.62 | a | |||
1967 | 22.31 | b | 28.73 | b | 43.84 | 53.67 | 52.10 | 65.77 | 66.43 | a | 63.90 | 58.30 | 46.94 | 40.35 | d | 26.21 | c | 47.38 | ||||||||
1968 | 31.13 | 29.38 | 38.26 | 44.60 | 57.03 | 62.80 | 65.23 | 67.90 | 56.89 | b | 49.84 | 36.53 | 26.32 | 47.16 | ||||||||||||
1969 | 30.77 | a | 33.08 | b | 30.61 | 48.80 | 54.68 | 65.13 | 71.06 | 68.94 | 61.53 | 49.90 | 36.68 | b | 31.10 | 48.52 | ||||||||||
1970 | 24.60 | a | 31.54 | 31.87 | a | 44.60 | 51.83 | a | 61.17 | a | 66.42 | 66.32 | 61.07 | 43.00 | b | 30.62 | a | 32.06 | 45.43 | |||||||
1971 | 25.97 | 26.54 | 33.03 | 43.00 | g | 52.89 | d | 65.07 | b | 66.50 | a | 62.87 | a | 59.03 | 48.71 | 37.53 | 33.90 | a | 46.55 | a | ||||||
1972 | 24.90 | 29.21 | 39.45 | b | 48.07 | b | 54.97 | 63.83 | 65.58 | 65.39 | 62.37 | 49.87 | 31.80 | 23.64 | c | 46.59 | ||||||||||
1973 | 23.87 | 28.36 | 37.03 | 38.34 | a | 51.64 | c | 60.90 | 67.00 | 65.35 | 61.03 | 49.55 | b | 40.14 | a | 25.59 | b | 45.73 | ||||||||
1974 | 25.40 | a | 25.50 | 42.71 | 41.33 | l | 58.27 | a | 62.57 | 66.35 | 64.84 | 55.37 | 50.11 | c | 38.79 | a | 29.74 | 47.24 | a | |||||||
1975 | 28.14 | b | 28.61 | 35.71 | 41.52 | c | 53.07 | a | 61.47 | 60.97 | 63.13 | 53.93 | 47.81 | 36.23 | 27.52 | b | 44.84 | |||||||||
1976 | 23.77 | 33.76 | 36.71 | 48.33 | 51.39 | 62.45 | a | 64.40 | a | 63.08 | e | 59.90 | 39.69 | b | 30.70 | 23.40 | a | 44.80 | ||||||||
1977 | 21.00 | b | 30.33 | a | 32.61 | 45.59 | a | 60.48 | 64.43 | 65.97 | 67.92 | e | 62.53 | 49.96 | c | 35.04 | d | 28.32 | c | 47.02 | ||||||
1978 | 21.48 | j | 24.63 | a | ----- | z | ----- | z | 55.31 | r | 65.36 | h | 69.61 | 66.42 | g | 61.38 | a | 48.57 | a | 41.31 | a | 26.63 | a | 45.36 | f | |
1979 | 21.21 | c | 25.64 | 36.60 | k | 47.12 | f | 55.13 | 62.86 | b | 67.39 | 63.17 | h | 56.34 | a | 50.32 | 32.00 | e | 30.81 | d | 44.63 | c | ||||
1980 | ----- | z | 29.29 | a | ----- | z | 41.28 | e | 56.65 | 67.73 | 71.10 | 68.03 | a | 62.62 | a | 45.61 | 33.72 | a | 33.13 | h | 52.89 | c | ||||
1981 | 29.43 | c | 32.68 | 38.57 | c | 51.50 | b | 54.83 | a | 65.34 | a | 68.81 | 65.77 | a | 61.59 | a | 51.93 | b | 37.90 | 31.13 | 49.12 | |||||
1982 | 24.35 | h | 28.06 | j | 42.72 | f | 50.33 | f | 55.92 | f | 63.45 | h | ----- | z | 69.80 | f | 62.81 | d | 48.00 | f | 36.58 | f | 31.71 | c | 47.26 | j |
1983 | 29.77 | e | 31.56 | j | 38.80 | f | 44.25 | f | 56.89 | d | 63.77 | h | 69.43 | c | 70.10 | j | 64.64 | h | 53.80 | f | 40.67 | f | 21.43 | h | 52.03 | i |
1984 | 26.48 | b | 29.45 | g | ----- | z | 45.43 | i | 59.74 | d | 69.15 | d | 69.15 | d | 68.27 | e | 59.95 | i | 51.38 | e | 38.15 | d | 36.07 | b | 52.30 | d |
1985 | 23.25 | c | 32.26 | e | 41.52 | j | 51.36 | e | 57.44 | d | 63.50 | b | 66.21 | g | 69.19 | 60.27 | 52.65 | 39.70 | 24.10 | 47.37 | b | |||||
1986 | 27.23 | 34.18 | 39.63 | a | 51.26 | k | 57.20 | a | 65.27 | 66.83 | b | 66.80 | f | 64.43 | 50.84 | 36.57 | 31.81 | d | 47.40 | b | ||||||
1987 | 26.52 | 34.50 | 33.82 | c | 42.18 | b | 55.38 | b | 63.14 | b | 66.87 | 67.00 | e | 57.87 | 50.87 | 33.67 | c | 28.73 | e | 46.71 | ||||||
1988 | 25.47 | a | 28.38 | ----- | z | 44.75 | f | 54.71 | 64.17 | 67.03 | 65.74 | d | 59.00 | 48.19 | 36.57 | 26.75 | c | 47.60 | b | |||||||
1989 | 29.57 | a | 29.61 | 35.79 | b | 48.07 | b | 61.24 | b | 62.07 | b | 66.61 | 66.84 | f | 55.07 | 49.19 | 36.55 | a | 22.13 | a | 45.08 | a | ||||
1990 | 28.58 | 32.93 | 40.75 | c | 48.29 | b | 54.47 | a | 70.43 | b | 65.65 | n | 67.27 | i | 62.62 | i | 48.13 | p | 36.67 | i | 28.48 | j | 45.91 | f | ||
1991 | 29.13 | h | 34.26 | a | 37.82 | i | 44.60 | t | 58.00 | n | 63.56 | e | 66.96 | c | 63.53 | a | 56.54 | q | 48.97 | a | 32.90 | 31.35 | 48.79 | e | ||
1992 | 27.42 | 35.46 | a | 40.90 | 47.87 | 54.52 | 64.03 | a | 67.64 | c | 64.07 | a | 59.60 | 47.57 | a | 34.27 | 30.71 | c | 47.84 | |||||||
1993 | 28.48 | b | 31.22 | a | 37.48 | 45.07 | a | 53.73 | e | 66.79 | b | 71.67 | a | 68.33 | a | 58.19 | d | 47.57 | c | 33.74 | g | 31.07 | a | 49.05 | a | |
1994 | 29.97 | b | 29.56 | a | 40.00 | 44.73 | 58.27 | a | 67.33 | 68.77 | 68.10 | a | 58.39 | b | 49.52 | d | 40.07 | a | 34.40 | a | 49.09 | |||||
1995 | 29.93 | a | 34.43 | 39.90 | a | 47.57 | 57.67 | a | 64.21 | a | 69.53 | a | 68.65 | 61.13 | 49.07 | b | 38.63 | 29.10 | 49.15 | |||||||
1996 | 24.16 | 32.48 | 34.52 | 47.36 | b | 65.73 | a | 67.56 | c | 71.03 | 68.13 | a | 59.28 | a | 47.21 | c | 40.87 | 29.71 | 49.00 | |||||||
1997 | 28.93 | a | 32.50 | 39.90 | 42.90 | 54.90 | 62.14 | a | 68.03 | a | 67.10 | b | 62.13 | 49.90 | 32.50 | b | 26.83 | b | 47.31 | |||||||
1998 | 31.03 | 34.18 | 35.87 | 42.28 | a | 59.74 | 67.86 | a | 72.37 | a | 68.57 | a | 63.53 | 55.71 | 43.10 | 29.00 | b | 50.27 | ||||||||
1999 | 28.87 | a | 34.43 | 40.73 | a | 47.93 | 58.03 | a | 66.86 | a | 68.97 | b | 69.20 | a | 61.17 | a | 49.13 | a | 40.40 | 28.69 | b | 49.53 | ||||
2000 | 31.97 | a | 37.03 | 41.62 | b | 49.80 | 63.26 | 66.93 | a | ----- | z | 69.20 | a | 61.87 | 53.20 | a | 35.69 | a | 28.55 | 49.01 | a | |||||
2001 | 29.39 | 35.29 | 38.26 | 51.37 | 60.11 | c | 68.63 | 71.37 | a | 68.92 | f | 59.86 | h | 49.31 | b | 43.66 | a | 33.31 | b | 48.07 | b | |||||
2002 | 31.65 | 28.88 | b | 34.30 | d | 53.03 | 58.77 | a | 66.80 | 68.00 | b | 69.73 | a | 61.63 | 51.14 | c | 42.17 | x | ----- | z | 52.39 | b | ||||
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.34 | a | 54.57 | c | 53.71 | w | ----- | z | 58.96 | 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 | 58.60 | t | 49.90 | 36.52 | a | 31.16 | 39.19 | i | ||
2012 | 30.61 | c | 34.41 | 45.11 | c | 51.73 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.46 | h | |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.17 | 31.03 | 37.56 | 46.89 | 56.56 | 64.91 | 68.00 | 66.62 | 60.14 | 49.13 | 37.04 | 29.09 | 47.53 | |||||||||||||
S.D. | 3.20 | 3.27 | 3.80 | 3.88 | 3.34 | 2.47 | 2.43 | 2.14 | 2.59 | 2.99 | 3.48 | 3.46 | 1.66 | |||||||||||||
SKEW | -0.36 | -0.20 | -0.12 | -0.19 | 0.62 | 0.31 | -0.37 | -0.32 | -0.67 | -0.71 | -0.13 | -0.19 | -0.15 | |||||||||||||
MAX | 31.97 | 37.03 | 45.11 | 53.67 | 65.73 | 70.43 | 72.37 | 69.73 | 64.43 | 55.71 | 43.66 | 36.07 | 50.27 | |||||||||||||
MIN | 21.00 | 24.63 | 30.45 | 38.34 | 51.39 | 60.90 | 60.97 | 62.87 | 53.93 | 39.69 | 30.62 | 22.13 | 44.80 | |||||||||||||
YRS | 34 | 36 | 30 | 28 | 34 | 33 | 33 | 30 | 33 | 37 | 34 | 35 | 18 |