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 | 67.52 | b | 68.77 | a | 62.67 | 54.48 | 40.03 | 32.32 | 54.30 | f | ||||
1963 | 22.37 | d | 37.31 | o | ----- | z | 52.15 | j | 58.81 | 65.53 | 69.61 | 69.03 | 61.67 | 51.48 | 38.93 | 28.94 | 51.82 | c | ||||||||
1964 | 29.29 | 26.48 | 37.97 | 48.17 | 59.35 | 66.43 | 68.84 | 69.52 | 61.83 | 48.93 | a | 41.10 | 32.60 | a | 49.21 | |||||||||||
1965 | 32.81 | 31.07 | 32.00 | 51.53 | 59.35 | 65.17 | 68.26 | 65.90 | a | 61.03 | a | 48.61 | 44.80 | 37.16 | 49.81 | |||||||||||
1966 | 26.00 | 26.69 | b | 41.13 | 48.03 | 57.90 | 65.00 | a | 70.32 | 64.93 | a | 60.47 | 45.19 | 42.93 | 26.55 | 47.93 | ||||||||||
1967 | 28.29 | 31.11 | a | 47.06 | 58.33 | 58.48 | 68.73 | 68.29 | 64.65 | 59.83 | 50.06 | 42.23 | 29.97 | 50.59 | ||||||||||||
1968 | 32.65 | 32.55 | 41.58 | 48.43 | 57.45 | 64.20 | 66.87 | 65.84 | 58.10 | 51.63 | a | 38.20 | 29.84 | 48.95 | ||||||||||||
1969 | 34.84 | 35.18 | 32.00 | 49.07 | 55.58 | 65.50 | 69.32 | 68.94 | 61.54 | d | 50.23 | 38.77 | 34.03 | 49.58 | ||||||||||||
1970 | 27.32 | 34.39 | 36.42 | 47.40 | 53.26 | 63.80 | 67.74 | 67.52 | 63.20 | 46.48 | 36.03 | 33.68 | 48.10 | |||||||||||||
1971 | 31.06 | 31.43 | 36.65 | 46.40 | 56.65 | 66.53 | 68.42 | 63.48 | 60.30 | 51.77 | 40.57 | 35.23 | 49.04 | |||||||||||||
1972 | 28.52 | 30.93 | 44.00 | 52.70 | 56.87 | 65.23 | 66.55 | 65.13 | 62.03 | 49.94 | 34.77 | 29.29 | 48.83 | |||||||||||||
1973 | 27.94 | 31.57 | 41.32 | 42.70 | 53.97 | 62.34 | a | 66.19 | 65.32 | 60.30 | 51.32 | 40.41 | a | 29.97 | 47.78 | |||||||||||
1974 | 26.48 | 29.89 | 44.47 | a | 48.40 | 59.87 | a | 62.13 | 66.06 | 63.90 | 54.90 | 51.45 | 37.93 | 30.42 | 47.99 | |||||||||||
1975 | 29.32 | 33.82 | 37.48 | 48.10 | a | 55.00 | 64.43 | 64.97 | 65.03 | 56.27 | 49.90 | 38.73 | 30.81 | 47.82 | ||||||||||||
1976 | 28.35 | 39.43 | a | 40.35 | 48.47 | 52.29 | 63.17 | 64.23 | 63.42 | 59.27 | 43.16 | 32.73 | 29.93 | a | 47.07 | |||||||||||
1977 | 24.58 | 34.41 | a | 39.45 | i | 47.41 | a | 60.94 | 66.40 | 68.23 | 70.10 | 65.40 | 51.55 | 39.34 | a | 33.16 | f | 52.84 | b | |||||||
1978 | 25.47 | a | 29.77 | b | 41.85 | d | 51.75 | b | 58.10 | 66.57 | 69.65 | 67.10 | 62.60 | 50.87 | 42.80 | 30.56 | f | 51.50 | a | |||||||
1979 | 26.58 | 32.71 | 42.06 | 48.50 | f | 55.69 | b | 61.53 | 67.71 | 62.55 | 57.60 | 50.03 | 33.90 | 32.32 | 47.52 | a | ||||||||||
1980 | 31.10 | a | 32.93 | 34.52 | 39.93 | 59.13 | 69.10 | 71.52 | 69.39 | 62.77 | 49.61 | 36.43 | 35.29 | 49.31 | ||||||||||||
1981 | 33.35 | 34.32 | 41.45 | 52.37 | 56.90 | 64.27 | 67.29 | 64.10 | 62.00 | 53.26 | 42.30 | 34.61 | 50.52 | |||||||||||||
1982 | 31.81 | 31.36 | 42.06 | 51.23 | 57.55 | 64.93 | 68.48 | 69.47 | a | 64.10 | 51.16 | 41.07 | 33.65 | 50.57 | ||||||||||||
1983 | 31.03 | 36.93 | a | 42.43 | a | 48.10 | a | 57.65 | 63.90 | 69.10 | 69.84 | 64.03 | 55.90 | 43.23 | 26.03 | 50.68 | ||||||||||
1984 | 28.84 | 34.03 | 39.61 | 48.47 | 59.90 | 67.50 | 67.68 | 67.30 | a | 59.00 | 51.60 | a | 40.90 | 37.65 | 50.21 | |||||||||||
1985 | 26.97 | 33.21 | 45.45 | 52.03 | 59.10 | 64.53 | 65.97 | 69.32 | 61.70 | 53.39 | 41.55 | a | 26.97 | 50.02 | ||||||||||||
1986 | 32.52 | 38.07 | 44.03 | 52.50 | 57.13 | 65.33 | 68.68 | 68.13 | 62.90 | 52.23 | 38.73 | 33.13 | 51.11 | |||||||||||||
1987 | 30.87 | 36.46 | 35.97 | 44.47 | 57.65 | 63.50 | 67.10 | 67.03 | 60.57 | 51.10 | 39.30 | 32.29 | 48.86 | |||||||||||||
1988 | 27.81 | 32.34 | 38.74 | 46.90 | 55.35 | 59.07 | 65.19 | 66.52 | 59.87 | 50.68 | 40.63 | 29.81 | 47.74 | |||||||||||||
1989 | 32.74 | 30.14 | 40.13 | 51.30 | 60.13 | 62.67 | 68.00 | 66.61 | 57.34 | a | 51.97 | 40.27 | 26.42 | 48.98 | ||||||||||||
1990 | 32.61 | 36.46 | 42.84 | 50.60 | 58.52 | 71.40 | 67.06 | 66.10 | 63.23 | 49.87 | 44.50 | 30.58 | 51.15 | |||||||||||||
1991 | 30.65 | 37.82 | 43.39 | 50.13 | 60.94 | 65.50 | 68.52 | 66.74 | 59.03 | 51.00 | 36.60 | 35.42 | 50.48 | |||||||||||||
1992 | 32.37 | a | 39.03 | 43.45 | 50.20 | 55.90 | 64.43 | 68.03 | 64.74 | 61.13 | 51.68 | 36.77 | 34.10 | 50.15 | ||||||||||||
1993 | 32.10 | 33.57 | 39.50 | a | 45.84 | e | 57.16 | 66.86 | a | 70.80 | a | 69.08 | g | 60.19 | d | 47.52 | 35.43 | 31.90 | 47.35 | a | ||||||
1994 | 30.10 | 34.74 | a | 42.81 | 48.65 | g | 61.32 | i | 69.63 | ----- | z | 69.00 | 60.97 | 53.23 | 41.72 | a | 37.74 | d | 48.88 | c | ||||||
1995 | 34.59 | b | 39.25 | 41.13 | a | 48.33 | 57.87 | 64.33 | l | 69.42 | 68.81 | 62.13 | 50.71 | 40.57 | b | 32.73 | a | 49.60 | a | |||||||
1996 | 30.57 | a | 35.38 | 35.60 | a | 48.43 | 65.37 | a | 68.83 | 71.00 | 68.81 | 60.90 | 50.14 | c | 39.97 | a | 34.10 | 50.76 | ||||||||
1997 | 30.65 | 34.75 | 44.03 | 45.20 | 57.23 | 64.20 | 68.55 | b | 68.42 | ----- | z | 52.58 | 37.17 | 30.07 | a | 48.44 | a | |||||||||
1998 | 35.11 | c | 37.27 | b | 40.12 | f | 46.36 | b | 62.45 | 70.17 | a | 73.14 | c | 68.77 | 65.34 | a | 56.61 | ----- | z | 34.29 | c | 54.95 | b | |||
1999 | 34.94 | 40.54 | 42.53 | a | 50.83 | 59.16 | 66.86 | a | 69.84 | 71.13 | 62.47 | 51.79 | q | ----- | z | ----- | z | 55.37 | c | |||||||
2000 | ----- | z | ----- | z | ----- | z | 53.12 | d | 62.57 | a | 66.67 | 70.42 | 68.20 | f | 61.57 | b | 53.17 | a | 35.21 | a | 29.04 | d | 53.97 | d | ||
2001 | 29.79 | c | 34.50 | b | 39.64 | c | 51.10 | a | 59.00 | c | 68.34 | a | 71.11 | c | 68.21 | b | 62.23 | d | 50.82 | c | 42.67 | c | 31.11 | d | 50.71 | |
2002 | 32.57 | c | 29.55 | f | 36.35 | h | 52.20 | e | 57.83 | g | 66.14 | i | 69.94 | n | 70.63 | d | 60.96 | e | 51.70 | h | 38.23 | d | 32.29 | c | 47.81 | f |
2003 | 30.05 | i | 33.78 | e | 38.78 | m | 49.70 | j | 58.90 | k | 62.55 | s | 67.57 | x | 64.56 | v | 60.42 | k | 52.09 | h | 39.87 | o | 31.50 | q | 33.78 | k |
2004 | ----- | z | 31.19 | m | 43.92 | s | 48.48 | i | 57.33 | j | 65.85 | q | 67.12 | o | 64.39 | m | 60.06 | m | 51.67 | s | 37.94 | m | 32.33 | y | ----- | z |
2005 | 31.88 | n | 35.77 | f | 38.80 | f | 43.89 | k | 56.89 | d | 65.80 | 67.19 | 66.19 | 63.17 | 51.81 | 38.43 | 29.90 | 54.92 | d | |||||||
2006 | 34.48 | 34.64 | 43.65 | 52.08 | f | 59.97 | a | 65.97 | 69.84 | 69.05 | k | 58.50 | p | 51.06 | 39.03 | 31.00 | 47.74 | c | ||||||||
2007 | 28.74 | 34.74 | i | 44.10 | 43.56 | u | 54.73 | p | 62.88 | n | 65.81 | j | 67.45 | 63.30 | c | 51.30 | a | 40.43 | 32.03 | a | 46.76 | e | ||||
2008 | 31.59 | b | 36.00 | d | 39.81 | 47.63 | 58.45 | 69.77 | 68.22 | d | 66.45 | 58.43 | 50.13 | 38.37 | 31.59 | b | 49.70 | |||||||||
2009 | 29.17 | a | 38.35 | h | 43.13 | a | 52.05 | j | 56.90 | 66.63 | 68.13 | 66.55 | 58.32 | b | 47.32 | 38.13 | 26.35 | 50.06 | b | |||||||
2010 | 27.19 | 30.32 | 38.00 | 48.20 | 52.53 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.93 | h | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.14 | 33.89 | 40.61 | 49.04 | 58.06 | 65.68 | 68.35 | 67.14 | 61.06 | 50.84 | 39.36 | 31.70 | 49.44 | |||||||||||||
S.D. | 2.98 | 3.26 | 3.51 | 3.23 | 2.47 | 2.51 | 1.83 | 2.15 | 2.26 | 2.44 | 2.75 | 2.97 | 1.17 | |||||||||||||
SKEW | -0.33 | -0.09 | -0.72 | -0.09 | 0.30 | 0.02 | 0.13 | -0.21 | -0.50 | -0.61 | -0.26 | 0.01 | -0.31 | |||||||||||||
MAX | 35.11 | 40.54 | 47.06 | 58.33 | 65.37 | 71.40 | 73.14 | 71.13 | 65.40 | 56.61 | 44.80 | 37.74 | 51.15 | |||||||||||||
MIN | 22.37 | 26.48 | 32.00 | 39.93 | 52.29 | 59.07 | 64.23 | 62.55 | 54.90 | 43.16 | 32.73 | 26.03 | 47.07 | |||||||||||||
YRS | 44 | 41 | 40 | 39 | 42 | 42 | 43 | 43 | 44 | 44 | 44 | 43 | 29 |