YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.17 | 42.62 | s | 46.17 | k | |
1905 | 30.37 | 25.62 | k | 51.95 | 52.92 | 65.71 | b | 74.57 | 74.03 | 77.65 | 75.79 | a | ----- | z | ----- | z | 33.19 | 59.58 | c | |||||||
1906 | 36.98 | 37.45 | ----- | z | 55.23 | 63.68 | 69.95 | b | 74.10 | 74.03 | 70.05 | 52.45 | 38.43 | a | 46.25 | a | 56.24 | a | ||||||||
1907 | 40.12 | a | 43.88 | b | ----- | z | 54.83 | a | ----- | z | ----- | z | ----- | z | 77.19 | o | 70.33 | ----- | z | ----- | z | 44.98 | 50.83 | g | ||
1908 | ----- | z | ----- | z | 51.78 | b | 58.27 | ----- | z | 72.93 | a | 75.19 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.54 | h | ||
1909 | ----- | z | ----- | z | ----- | z | 56.93 | 64.37 | 72.35 | 80.12 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.55 | i | |||
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 | ----- | 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 | 71.10 | f | 61.37 | 48.80 | h | 39.77 | a | 50.57 | j | |
1963 | 28.56 | 42.48 | 48.84 | c | 61.47 | 69.84 | 73.98 | 80.32 | 75.50 | k | 71.27 | 65.10 | ----- | z | ----- | z | 60.21 | c | ||||||||
1964 | ----- | z | 33.48 | 46.42 | a | 58.67 | i | 69.15 | 75.05 | a | 81.31 | 79.10 | 69.83 | a | 60.11 | 47.93 | a | 40.26 | 60.26 | b | ||||||
1965 | 42.90 | b | 39.85 | a | 39.89 | 61.57 | 69.89 | i | 72.03 | 78.02 | 76.47 | o | 68.62 | b | 59.63 | 53.23 | 42.84 | 55.86 | b | |||||||
1966 | 27.33 | a | 34.88 | b | 49.79 | 54.52 | 62.98 | a | 73.28 | 81.98 | a | 74.08 | 67.90 | 56.66 | 51.07 | 35.19 | 55.81 | |||||||||
1967 | 38.79 | 39.18 | 52.95 | c | 60.80 | 63.19 | 73.73 | 76.48 | 76.27 | e | 67.40 | 60.78 | a | 45.90 | e | 35.00 | a | 57.54 | ||||||||
1968 | 35.68 | a | 36.43 | 46.81 | 54.03 | 61.95 | a | 73.13 | ----- | z | 75.66 | 67.55 | 59.68 | 45.17 | 35.74 | 53.80 | a | |||||||||
1969 | 39.56 | 38.61 | 37.65 | a | 57.47 | 64.94 | 71.62 | 81.11 | 79.10 | 68.40 | 53.50 | a | 43.93 | i | 42.04 | c | 57.64 | a | ||||||||
1970 | 30.90 | ----- | z | 36.85 | k | 53.83 | a | 66.63 | 73.47 | 78.76 | b | 77.52 | b | 69.02 | 52.60 | f | 44.13 | 42.45 | 59.63 | c | ||||||
1971 | 36.67 | a | 37.78 | a | 45.10 | a | 55.98 | b | 63.40 | a | 75.52 | 78.15 | a | 71.95 | c | 67.31 | a | 59.00 | 46.14 | b | 39.06 | 56.34 | ||||
1972 | 35.18 | a | 40.66 | 51.62 | a | 59.27 | d | 63.73 | a | 73.27 | 74.28 | a | 73.93 | a | 70.63 | 58.53 | a | 37.85 | 32.60 | 55.96 | ||||||
1973 | 31.35 | 37.75 | 46.68 | a | 48.88 | 61.48 | 72.66 | a | 76.57 | a | 77.08 | 67.65 | 61.27 | 50.07 | 38.94 | 55.87 | ||||||||||
1974 | 33.23 | 40.32 | 52.42 | a | 57.69 | a | 70.00 | a | 72.93 | 79.65 | 73.81 | 61.87 | 57.82 | 46.22 | 36.18 | 56.84 | ||||||||||
1975 | 37.23 | 35.14 | 43.61 | 53.88 | a | 62.55 | 72.12 | 74.76 | 75.68 | 62.19 | l | 60.02 | 45.75 | 40.11 | 54.62 | a | ||||||||||
1976 | 36.43 | a | 46.89 | k | 50.42 | e | 56.63 | 59.50 | c | 72.72 | 74.79 | 77.55 | 68.57 | b | 51.98 | 41.36 | a | 36.98 | a | 57.00 | a | |||||
1977 | 28.56 | 42.30 | 47.13 | 55.31 | a | 65.87 | 75.48 | 78.87 | a | 77.05 | 72.05 | 59.87 | 47.27 | 39.10 | 57.41 | |||||||||||
1978 | 28.39 | 27.61 | 45.26 | 61.17 | 63.05 | 75.30 | 81.05 | 76.62 | b | 70.83 | 59.31 | 45.75 | 33.45 | 55.65 | ||||||||||||
1979 | 24.11 | 36.46 | 45.53 | 54.69 | a | 62.71 | 71.53 | 77.24 | 73.58 | 69.97 | a | 61.73 | 41.33 | 39.11 | 54.83 | |||||||||||
1980 | 35.15 | 37.76 | 43.73 | 53.94 | d | 62.45 | a | 78.82 | 82.79 | 78.61 | 69.98 | a | 55.93 | a | 43.33 | 41.39 | d | 56.99 | ||||||||
1981 | 38.55 | 40.18 | 46.72 | d | 62.95 | b | 64.89 | c | 77.55 | 80.00 | b | 74.58 | 72.09 | c | 58.08 | a | 49.76 | a | 41.00 | 58.86 | ||||||
1982 | 41.80 | p | 34.33 | g | 48.50 | e | 55.22 | g | 63.25 | e | 70.52 | f | 78.02 | g | 80.47 | b | 72.84 | h | 58.19 | m | 46.33 | g | 36.38 | f | 64.07 | i |
1983 | 35.31 | g | 36.39 | f | 45.47 | l | 50.15 | g | 63.00 | b | 70.38 | m | 79.90 | f | 80.77 | e | 73.52 | h | ----- | z | 43.17 | o | 24.29 | 56.02 | i | |
1984 | 32.31 | 41.05 | 43.03 | a | 50.85 | 65.90 | 75.03 | 76.52 | 77.27 | 67.57 | 55.44 | 45.32 | 39.68 | 55.83 | ||||||||||||
1985 | 31.87 | 35.79 | b | 47.81 | 58.41 | a | 67.71 | b | 72.72 | 78.85 | 78.15 | a | 69.23 | 56.21 | 44.12 | 34.21 | 56.26 | |||||||||
1986 | 42.63 | 41.61 | 52.18 | 58.93 | 65.61 | 73.10 | 81.50 | 75.87 | 68.92 | 55.85 | 43.67 | c | 37.67 | a | 58.13 | |||||||||||
1987 | 34.42 | 42.30 | 43.68 | 54.97 | 65.24 | b | 72.68 | 75.97 | a | 75.97 | 67.87 | 58.15 | 47.05 | a | 34.65 | a | 56.08 | |||||||||
1988 | 31.68 | 39.43 | a | 44.98 | 53.10 | 63.73 | 73.28 | 76.37 | 76.95 | 68.16 | b | ----- | z | ----- | z | 36.68 | t | 58.63 | c | |||||||
1989 | 40.15 | 32.22 | a | 49.48 | 59.65 | 66.15 | 69.04 | d | 76.34 | 75.47 | 67.16 | b | 60.29 | 48.08 | 31.30 | c | 56.28 | |||||||||
1990 | 38.61 | 41.61 | 45.10 | 53.40 | a | 60.84 | 80.33 | d | 74.94 | 75.39 | 71.57 | 57.69 | m | 49.00 | 31.15 | d | 56.54 | a | ||||||||
1991 | 31.69 | 45.15 | a | 49.16 | 57.60 | 66.18 | 72.45 | 75.52 | c | 74.19 | 64.67 | 57.44 | 39.03 | 37.24 | 55.86 | |||||||||||
1992 | 36.39 | 43.47 | 49.13 | 56.35 | 61.55 | a | 68.87 | 75.16 | 71.64 | c | 68.18 | b | 58.84 | 39.70 | 33.69 | 55.25 | ||||||||||
1993 | 31.21 | 35.32 | 44.45 | 52.91 | b | 62.56 | 72.34 | a | 78.93 | j | 75.18 | 67.35 | 54.32 | a | 40.12 | 38.32 | 52.19 | a | ||||||||
1994 | 35.98 | a | 35.02 | a | 47.77 | 54.57 | 63.13 | 78.27 | 76.62 | a | 75.94 | 68.33 | 58.89 | 45.78 | a | 41.65 | 56.83 | |||||||||
1995 | 37.63 | 42.80 | 45.97 | 53.25 | 60.29 | 69.86 | a | 76.56 | 77.08 | 66.35 | c | 57.11 | 47.82 | 39.71 | c | 56.20 | ||||||||||
1996 | 34.42 | 42.09 | a | 42.19 | 55.58 | 71.52 | c | 74.02 | 77.52 | d | 73.81 | 67.08 | d | 57.19 | 44.42 | 38.05 | 56.49 | |||||||||
1997 | 34.60 | a | 37.13 | a | 48.65 | 47.86 | a | 62.05 | 70.50 | d | 77.39 | 75.42 | 70.80 | 57.23 | a | 42.22 | 32.97 | a | 54.73 | |||||||
1998 | 37.89 | d | 40.54 | 41.13 | a | 51.12 | e | 68.74 | 76.71 | a | 81.16 | f | 76.48 | 74.97 | a | 60.37 | 47.78 | 37.90 | 55.78 | a | ||||||
1999 | 38.98 | b | 45.81 | b | 44.79 | 55.22 | e | 61.18 | 71.29 | a | 75.04 | r | 78.33 | a | 67.98 | e | ----- | z | 53.08 | 37.77 | k | 57.41 | c | |||
2000 | ----- | z | 47.17 | h | 49.59 | o | 47.19 | v | 69.08 | r | 71.68 | k | ----- | z | 79.00 | x | 74.64 | w | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.75 | a | 68.85 | 58.14 | b | 50.39 | b | 40.43 | b | 59.11 | g | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.77 | 38.96 | 46.82 | 55.80 | 64.38 | 73.45 | 77.61 | 76.21 | 69.00 | 58.19 | 45.56 | 37.59 | 56.36 | |||||||||||||
S.D. | 4.39 | 3.89 | 3.64 | 3.43 | 2.82 | 2.52 | 2.51 | 2.11 | 2.50 | 2.75 | 3.93 | 4.29 | 1.00 | |||||||||||||
SKEW | -0.30 | -0.61 | -0.30 | 0.01 | 0.71 | 0.66 | 0.43 | -0.00 | 0.23 | -0.22 | -0.12 | -0.61 | 0.69 | |||||||||||||
MAX | 42.90 | 45.81 | 52.95 | 62.95 | 71.52 | 80.33 | 82.79 | 80.77 | 75.79 | 65.10 | 53.23 | 46.25 | 58.86 | |||||||||||||
MIN | 24.11 | 27.61 | 37.65 | 47.86 | 59.50 | 68.87 | 74.03 | 71.64 | 61.87 | 51.98 | 37.85 | 24.29 | 54.73 | |||||||||||||
YRS | 37 | 35 | 37 | 39 | 39 | 39 | 34 | 38 | 38 | 34 | 35 | 38 | 22 |