YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 73.53 | 83.19 | 76.89 | 72.87 | 64.03 | 41.78 | 39.10 | 64.48 | e | |||||||
1941 | 35.87 | 38.02 | 41.24 | 54.27 | 64.95 | 70.85 | 77.08 | 77.34 | 70.55 | 57.63 | 47.12 | 38.93 | b | 56.15 | ||||||||||||
1942 | 34.23 | 34.32 | 44.65 | 56.55 | 63.34 | 73.00 | 78.76 | 76.30 | a | 68.12 | 58.35 | d | 47.50 | 37.34 | 56.04 | |||||||||||
1943 | 36.02 | 43.41 | 41.68 | a | 59.43 | ----- | z | 75.10 | 80.06 | 82.13 | 69.23 | 57.10 | 43.70 | 29.08 | 56.09 | a | ||||||||||
1944 | 29.42 | 38.74 | 42.11 | 49.91 | a | 63.76 | 74.60 | 76.37 | 78.77 | 70.07 | 58.03 | 47.52 | a | 34.23 | 55.29 | |||||||||||
1945 | 35.69 | 37.79 | b | 50.35 | a | 51.03 | 63.89 | 68.60 | a | 78.67 | a | 78.84 | 69.72 | 58.52 | 47.10 | 34.05 | a | 56.19 | ||||||||
1946 | 36.17 | a | 41.86 | 50.60 | 63.27 | 62.24 | 76.43 | 82.52 | 78.13 | 70.03 | 57.77 | 43.03 | 41.55 | 58.63 | ||||||||||||
1947 | 34.37 | 35.46 | 41.65 | 52.32 | 61.16 | 71.98 | 78.44 | 81.15 | 74.65 | d | 65.85 | d | 41.42 | j | 37.35 | e | 57.67 | a | ||||||||
1948 | 31.48 | 32.77 | a | 37.42 | 60.62 | 65.48 | 74.43 | 79.31 | 76.55 | 71.93 | 58.87 | 41.60 | 39.53 | a | 55.83 | |||||||||||
1949 | 26.47 | a | 36.61 | 44.69 | 54.32 | 64.85 | 73.12 | 78.15 | 76.45 | 68.18 | 58.26 | 52.73 | 36.79 | 55.88 | ||||||||||||
1950 | 35.16 | b | 43.71 | 44.37 | 55.19 | a | 65.08 | 75.28 | 73.26 | 73.15 | 66.02 | 63.40 | 43.23 | 38.11 | 56.33 | |||||||||||
1951 | 33.27 | 39.80 | 42.08 | 51.95 | 64.47 | 69.67 | 80.26 | 79.44 | 67.92 | 56.39 | 40.87 | 36.40 | a | 55.21 | ||||||||||||
1952 | 40.40 | 40.47 | 41.47 | 53.53 | 64.05 | 82.15 | 79.48 | 80.52 | 70.00 | 56.50 | 40.68 | 34.05 | 56.94 | |||||||||||||
1953 | 43.58 | 39.36 | 50.03 | 53.53 | 64.16 | 81.83 | 79.06 | 77.13 | 72.88 | 60.24 | 46.20 | 35.87 | 58.66 | |||||||||||||
1954 | 36.50 | 47.46 | 42.63 | 59.95 | 61.03 | b | 76.53 | 83.29 | 79.29 | 74.72 | 58.77 | 48.87 | 40.23 | 59.11 | ||||||||||||
1955 | 35.77 | 35.17 | a | 44.76 | 58.25 | 65.84 | 71.68 | 81.56 | 79.65 | 72.05 | 61.17 | a | 42.18 | 38.40 | 57.21 | |||||||||||
1956 | 35.42 | 34.76 | 47.08 | 54.25 | 70.26 | 79.40 | 79.40 | 79.48 | 73.58 | 62.68 | 42.72 | 39.94 | 58.25 | |||||||||||||
1957 | 31.45 | 43.39 | 43.45 | 51.71 | a | 60.26 | 72.33 | 82.26 | 78.61 | 67.36 | a | 57.18 | 41.42 | 41.97 | 55.95 | |||||||||||
1958 | 36.34 | 36.64 | 34.34 | 51.25 | 68.23 | 76.13 | 77.79 | 78.55 | 70.72 | 58.60 | 45.90 | 36.52 | 55.92 | |||||||||||||
1959 | 28.84 | 38.38 | 44.50 | 53.98 | 65.94 | 76.83 | 77.45 | 79.44 | 68.78 | 54.05 | 41.97 | a | 38.31 | 55.70 | ||||||||||||
1960 | 31.77 | 30.21 | 41.02 | 58.43 | 64.55 | 75.05 | 76.19 | 78.82 | 70.13 | 58.13 | 45.60 | 35.61 | 55.46 | |||||||||||||
1961 | 35.29 | 39.38 | 44.73 | 53.17 | 63.94 | 73.77 | 78.03 | 77.32 | 66.45 | 57.79 | 40.62 | 34.63 | 55.43 | |||||||||||||
1962 | 29.61 | 41.54 | 44.08 | 56.07 | 70.97 | 71.48 | 77.81 | 78.68 | 69.16 | a | 59.35 | 46.23 | 39.65 | 57.05 | ||||||||||||
1963 | 25.31 | 42.41 | 49.53 | 60.52 | 69.26 | 75.55 | 81.69 | 79.40 | 73.33 | 65.60 | 47.78 | 31.50 | 58.49 | |||||||||||||
1964 | 37.48 | 32.24 | 41.92 | 56.97 | 68.73 | 74.67 | 81.94 | 77.79 | 68.90 | 57.98 | 44.42 | 35.69 | 56.56 | |||||||||||||
1965 | 40.05 | 36.79 | 36.52 | 59.25 | 65.97 | 72.43 | 78.52 | 76.40 | 66.82 | 59.47 | 50.80 | ----- | z | 58.46 | a | |||||||||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | 38.60 | k | 47.14 | k | 45.77 | k | 53.07 | h | 62.31 | j | 73.88 | n | 80.76 | j | 85.20 | u | 71.05 | s | 58.20 | u | 38.75 | x | ----- | z | ----- | z |
2001 | 32.95 | i | 36.87 | i | 44.05 | l | 61.69 | v | ----- | z | 75.23 | s | ----- | z | 80.84 | f | 71.08 | l | 58.81 | j | 50.24 | i | 38.37 | h | ----- | z |
2002 | 34.85 | g | 36.57 | g | 40.31 | m | 57.34 | k | 67.05 | j | 79.24 | g | 79.20 | f | 77.33 | j | 69.96 | f | 52.40 | g | 44.58 | j | 31.41 | t | ----- | z |
2003 | 36.48 | j | 35.37 | i | 48.69 | o | 51.28 | u | 64.30 | p | 69.96 | b | 80.62 | g | 80.05 | i | 67.68 | k | 59.83 | k | 43.04 | g | 43.08 | s | 69.96 | k |
2004 | 32.04 | r | 34.58 | k | 49.73 | k | 54.15 | m | 69.56 | v | 74.50 | j | 76.33 | h | 73.42 | e | 73.47 | m | 55.56 | w | 43.67 | r | 42.09 | t | 73.42 | k |
2005 | 40.95 | u | 42.10 | h | 41.70 | h | 54.21 | p | 62.70 | p | 74.25 | r | 78.57 | p | 74.29 | q | 73.83 | u | 53.57 | q | 52.29 | r | 35.27 | c | 35.27 | k |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.62 | d | 81.39 | d | 76.98 | d | 63.43 | c | 56.69 | 44.30 | b | 36.16 | c | 62.51 | e | |
2007 | 27.67 | a | 33.71 | 50.16 | 49.30 | 63.00 | 70.20 | 77.03 | 81.00 | a | 70.60 | 59.10 | 43.88 | b | 31.82 | 54.79 | ||||||||||
2008 | 34.52 | 36.02 | a | 44.00 | 51.85 | 65.05 | 76.28 | 78.71 | 75.50 | 66.24 | a | 55.87 | 46.58 | 34.76 | 55.45 | |||||||||||
2009 | 37.27 | e | ----- | z | 46.29 | c | 54.34 | b | 62.50 | b | 74.55 | 82.53 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.99 | g | |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.12 | 38.16 | 43.83 | 55.19 | 64.92 | 74.39 | 79.23 | 78.10 | 69.81 | 59.08 | 44.87 | 36.65 | 56.52 | |||||||||||||
S.D. | 4.24 | 4.06 | 4.06 | 3.64 | 2.69 | 3.28 | 2.33 | 2.05 | 2.74 | 2.83 | 3.14 | 3.00 | 1.25 | |||||||||||||
SKEW | -0.18 | 0.19 | -0.16 | 0.41 | 0.57 | 0.52 | -0.14 | -0.48 | -0.08 | 0.98 | 0.57 | -0.42 | 0.79 | |||||||||||||
MAX | 43.58 | 47.46 | 50.60 | 63.27 | 70.97 | 82.15 | 83.29 | 82.13 | 74.72 | 65.85 | 52.73 | 41.97 | 59.11 | |||||||||||||
MIN | 25.31 | 30.21 | 34.34 | 49.30 | 60.26 | 68.60 | 73.26 | 73.15 | 63.43 | 54.05 | 40.62 | 29.08 | 54.79 | |||||||||||||
YRS | 28 | 27 | 28 | 28 | 27 | 31 | 29 | 30 | 29 | 29 | 28 | 29 | 24 |