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 | 46.87 | 64.52 | f | 67.87 | p | 76.26 | k | ----- | z | 79.38 | f | ----- | z | 62.06 | d | 56.86 | e | 47.65 | g | 55.26 | i | |
1966 | 36.00 | 41.43 | 54.56 | 59.98 | d | 69.40 | b | 77.58 | f | 83.83 | a | 78.18 | a | 73.20 | g | 60.12 | e | 55.82 | e | 41.43 | a | 58.08 | b | |||
1967 | 41.93 | b | 45.58 | b | 60.79 | 69.03 | 70.29 | 78.62 | a | 79.70 | a | 77.87 | 70.20 | 63.40 | 52.88 | e | 40.91 | d | 62.60 | |||||||
1968 | 42.29 | 43.02 | 51.60 | 58.77 | 70.69 | 77.10 | 77.73 | 80.45 | 71.18 | b | 65.82 | 50.13 | 42.95 | 60.98 | ||||||||||||
1969 | 45.55 | a | 47.20 | c | 45.55 | 63.13 | 68.44 | 79.32 | 84.58 | 82.61 | 72.72 | 61.15 | 50.70 | b | 46.74 | 62.31 | ||||||||||
1970 | 39.33 | a | 45.84 | 47.03 | a | 61.22 | 68.10 | a | 76.21 | b | 81.10 | 80.87 | 73.05 | 57.47 | b | 48.52 | a | 48.76 | 60.62 | |||||||
1971 | 44.32 | 43.93 | 52.94 | 61.05 | i | 69.44 | d | 78.16 | b | 80.65 | a | 74.03 | a | 71.28 | 61.76 | 51.88 | 46.15 | a | 61.32 | a | ||||||
1972 | 42.77 | 46.22 | 58.43 | b | 65.77 | b | 68.39 | 77.58 | 78.03 | 76.48 | 74.18 | 62.66 | 46.27 | 40.57 | c | 61.45 | ||||||||||
1973 | 36.77 | 41.62 | b | 53.39 | 54.55 | a | 67.84 | c | 76.33 | 80.10 | 79.42 | 72.13 | 65.02 | b | 56.33 | a | 44.64 | b | 60.68 | |||||||
1974 | 42.30 | a | 45.23 | 60.98 | 60.31 | l | 73.35 | a | 78.05 | 80.63 | 76.82 | 65.85 | 61.21 | c | 50.91 | a | 43.11 | 61.68 | a | |||||||
1975 | 42.00 | b | 44.20 | 52.37 | 58.69 | c | 68.58 | a | 76.62 | 74.77 | 77.32 | 68.80 | b | 63.65 | 53.03 | 45.15 | d | 60.43 | ||||||||
1976 | 41.37 | 52.52 | a | 55.18 | 64.15 | 66.87 | 76.86 | a | 74.17 | a | 76.90 | e | 70.88 | 54.41 | b | 45.21 | a | 40.77 | c | 59.94 | ||||||
1977 | 35.26 | b | 46.98 | b | 51.24 | 59.52 | a | 72.82 | 78.83 | 80.16 | 82.60 | e | 78.87 | 65.30 | c | 53.30 | e | 45.48 | c | 62.53 | ||||||
1978 | 35.22 | m | 39.56 | a | ----- | z | ----- | z | 71.00 | s | 79.18 | h | 83.48 | 79.60 | g | 72.21 | a | 62.73 | a | 53.05 | a | 41.59 | b | 58.77 | f | |
1979 | 33.96 | c | 42.66 | 52.62 | n | 63.23 | f | 69.79 | 76.39 | b | 81.16 | 77.12 | j | 74.21 | b | 68.40 | b | 48.57 | h | 44.02 | e | 61.32 | d | |||
1980 | ----- | z | 44.88 | a | ----- | z | 58.60 | e | 69.85 | 81.22 | 85.81 | 81.43 | b | 74.50 | a | 61.52 | 47.66 | a | 45.63 | h | 67.27 | c | ||||
1981 | 42.88 | c | 46.93 | 50.96 | c | 64.59 | b | 69.25 | a | 77.52 | a | 81.69 | 79.10 | a | 75.21 | a | 64.09 | b | 55.76 | a | 47.68 | 62.97 | ||||
1982 | 40.76 | h | 42.72 | j | 57.86 | f | 64.69 | f | 69.30 | f | 76.64 | h | ----- | z | 83.66 | f | 77.40 | d | 63.40 | f | 50.62 | f | 44.12 | c | 60.76 | j |
1983 | 42.94 | e | 47.36 | j | 55.54 | f | 60.91 | g | 72.37 | e | 77.80 | h | 82.80 | c | 83.83 | j | 77.77 | h | 66.50 | f | 53.88 | f | 34.77 | i | 66.04 | i |
1984 | 38.91 | b | 46.70 | g | ----- | z | 62.90 | i | 74.63 | d | 81.52 | d | 82.00 | d | 81.13 | e | 73.07 | i | 61.77 | e | 50.54 | d | 47.72 | b | 64.78 | d |
1985 | 37.83 | e | 45.30 | e | 56.38 | j | 67.38 | e | 74.06 | d | 77.21 | b | 80.58 | g | 83.31 | 73.30 | 64.23 | 55.84 | a | 40.76 | 61.92 | b | ||||
1986 | 44.63 | 49.23 | 58.37 | a | 69.53 | k | 72.93 | a | 76.35 | 80.22 | b | 78.08 | f | 74.18 | 60.92 | 49.93 | 43.30 | d | 61.01 | b | ||||||
1987 | 41.23 | 46.54 | 48.00 | c | 58.80 | b | 68.64 | b | 75.80 | c | 79.24 | 79.81 | e | 71.10 | 65.05 | 49.71 | d | 44.52 | e | 60.70 | ||||||
1988 | 39.43 | a | 44.59 | ----- | z | 62.62 | f | 69.15 | 77.70 | 78.15 | 78.54 | d | 72.93 | 63.37 | a | 54.75 | 42.75 | c | 62.13 | b | ||||||
1989 | 45.27 | a | 42.50 | a | 54.19 | b | 64.36 | b | 75.93 | b | 76.25 | b | 81.35 | 80.42 | f | 70.43 | 64.68 | 53.23 | b | 38.33 | b | 60.59 | a | |||
1990 | 45.68 | 49.07 | 54.22 | d | 62.61 | b | 70.23 | a | 83.96 | b | 73.79 | n | 79.61 | i | 72.14 | i | 64.50 | r | 51.00 | i | 41.90 | j | 60.96 | f | ||
1991 | 39.78 | h | 49.63 | a | 55.52 | j | 63.25 | t | 73.65 | n | 77.81 | f | 79.20 | c | 77.57 | a | 71.08 | q | 65.96 | c | 45.82 | 43.77 | a | 60.32 | f | |
1992 | 40.81 | 49.57 | a | 56.94 | 61.97 | 67.81 | 76.83 | a | 79.79 | c | 76.58 | a | 73.97 | 64.33 | a | 48.15 | 44.14 | c | 61.74 | |||||||
1993 | 41.09 | b | 46.06 | a | 53.95 | a | 62.28 | a | 69.42 | e | 78.36 | b | 83.30 | a | 81.68 | a | 70.79 | d | 61.64 | c | 48.45 | i | 45.32 | a | 63.08 | a |
1994 | 44.09 | b | 44.59 | a | 55.95 | 61.98 | 71.10 | a | 82.70 | 82.94 | 81.12 | a | 72.33 | c | 64.10 | e | 54.02 | a | 47.23 | a | 63.51 | |||||
1995 | 44.23 | a | 49.91 | a | 53.72 | a | 62.84 | a | 71.48 | b | 77.12 | a | 82.93 | a | 80.15 | 73.28 | 65.83 | b | 53.48 | 45.00 | a | 63.33 | ||||
1996 | 41.76 | 49.05 | 50.37 | 62.68 | b | 79.79 | b | 80.80 | c | 83.48 | 78.85 | a | 70.33 | a | 62.12 | c | 53.97 | 45.89 | 63.26 | |||||||
1997 | 41.62 | a | 43.66 | 55.16 | 55.63 | 68.18 | 74.71 | a | 81.20 | a | 80.62 | b | 75.50 | 64.21 | 48.04 | b | 40.88 | b | 60.78 | |||||||
1998 | 47.06 | 47.86 | 52.05 | 60.26 | a | 76.87 | 83.07 | a | 85.42 | a | 79.72 | a | 77.20 | 67.47 | 55.20 | 43.38 | b | 64.63 | ||||||||
1999 | 46.05 | b | 52.11 | 54.08 | a | 63.62 | a | 71.55 | a | 77.78 | a | 80.55 | b | 82.28 | a | 74.12 | a | 63.60 | a | 56.42 | 44.50 | b | 63.89 | |||
2000 | 46.83 | a | 53.33 | 57.47 | b | 64.75 | 77.16 | 76.97 | a | ----- | z | 81.93 | a | 76.38 | 62.97 | a | 46.40 | a | 39.92 | 62.19 | a | |||||
2001 | 40.27 | 48.25 | 50.03 | a | 65.00 | 73.55 | c | 81.27 | 85.25 | a | 80.70 | f | 71.75 | h | 63.24 | b | 54.22 | a | 44.86 | b | 60.60 | b | ||||
2002 | 44.79 | 42.50 | b | 50.31 | d | 65.93 | a | 72.27 | a | 78.78 | 79.52 | b | 82.27 | a | 73.70 | 60.75 | c | 53.50 | x | ----- | z | 65.08 | b | |||
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.40 | a | 67.48 | c | 63.00 | w | ----- | z | 70.94 | 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 | 75.75 | t | 64.03 | 51.67 | a | 41.05 | 52.25 | i | ||
2012 | 45.77 | c | 47.12 | 58.95 | c | 67.58 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.85 | h | |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.97 | 46.25 | 53.52 | 62.34 | 71.18 | 78.31 | 81.06 | 79.64 | 73.02 | 63.20 | 51.81 | 43.75 | 62.02 | |||||||||||||
S.D. | 3.34 | 3.26 | 3.98 | 3.49 | 3.09 | 2.30 | 2.73 | 2.30 | 2.64 | 2.67 | 3.41 | 2.51 | 1.39 | |||||||||||||
SKEW | -0.60 | 0.23 | -0.04 | -0.26 | 0.96 | 0.95 | -0.47 | -0.41 | -0.19 | -0.85 | -0.35 | -0.06 | 0.21 | |||||||||||||
MAX | 47.06 | 53.33 | 60.98 | 69.03 | 79.79 | 83.96 | 85.81 | 83.31 | 78.87 | 68.40 | 56.86 | 48.76 | 64.63 | |||||||||||||
MIN | 33.96 | 39.56 | 45.55 | 54.55 | 66.87 | 74.71 | 74.17 | 74.03 | 65.85 | 54.41 | 45.21 | 38.33 | 59.94 | |||||||||||||
YRS | 34 | 35 | 30 | 28 | 34 | 32 | 33 | 29 | 32 | 37 | 33 | 34 | 18 |