YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.71 | b | 36.71 | k |
1907 | 25.87 | a | 41.05 | 41.50 | a | ----- | z | 55.45 | a | 57.38 | b | 65.33 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.25 | g | |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 74.33 | p | 68.53 | 58.00 | b | 49.88 | c | 36.40 | a | 34.11 | d | 49.38 | g | |
1932 | 32.95 | c | 33.41 | 42.15 | 47.43 | a | 52.63 | 62.03 | 64.28 | a | 64.18 | 59.77 | 51.81 | 45.72 | a | 28.06 | 48.70 | |||||||||
1933 | 33.37 | 32.39 | e | 41.05 | a | 47.21 | b | 48.40 | 62.05 | 68.94 | 67.61 | 57.07 | 55.53 | 42.13 | 41.63 | a | 49.78 | |||||||||
1934 | 41.89 | 41.41 | 49.63 | 56.78 | 59.47 | 61.46 | b | 68.65 | a | 69.53 | 60.00 | 53.38 | a | 45.55 | b | 35.61 | 53.61 | |||||||||
1935 | 35.09 | b | 38.73 | 38.92 | 45.07 | 53.23 | 61.90 | a | 66.87 | ----- | z | 63.65 | 49.42 | 36.41 | b | 32.18 | c | 47.41 | a | |||||||
1936 | 35.59 | b | 27.90 | 41.33 | a | 51.67 | 58.69 | 63.53 | 68.73 | 68.29 | 58.93 | 55.18 | 36.90 | a | 37.74 | 50.37 | ||||||||||
1937 | 16.07 | c | 34.52 | 41.33 | a | 46.42 | 55.78 | a | 61.47 | 68.53 | 66.08 | 61.32 | 58.68 | 49.40 | 37.38 | a | 49.75 | |||||||||
1938 | 34.39 | 34.98 | 41.47 | 48.93 | 54.08 | 63.27 | 70.53 | 64.85 | 64.52 | 51.31 | 37.93 | 35.03 | a | 50.11 | ||||||||||||
1939 | 37.98 | 33.98 | 43.73 | 51.63 | 57.18 | 58.73 | 69.84 | 67.63 | 62.00 | 53.65 | 45.95 | 42.08 | a | 52.03 | ||||||||||||
1940 | 30.57 | b | 39.39 | a | 42.07 | a | 44.35 | 54.55 | 66.72 | 68.76 | 71.02 | 60.35 | 54.18 | 39.42 | 38.74 | b | 50.84 | |||||||||
1941 | 36.83 | a | 44.27 | 46.11 | 50.23 | 55.55 | 60.30 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.88 | f | |||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.25 | 38.55 | 39.40 | j | ||
1943 | 28.76 | 40.12 | 42.03 | 50.85 | 51.37 | 58.43 | a | 68.18 | a | 64.06 | 64.43 | 52.21 | 41.58 | 31.39 | 49.45 | |||||||||||
1944 | 34.15 | a | 36.95 | a | 41.77 | 49.18 | 55.37 | 59.22 | 67.61 | 69.37 | a | 62.47 | 55.50 | 39.45 | a | 28.71 | b | 49.98 | ||||||||
1945 | 35.10 | 37.87 | b | 38.48 | 46.75 | 55.42 | 60.45 | 72.40 | 69.15 | 59.10 | 53.52 | a | 39.93 | 33.58 | 50.15 | |||||||||||
1946 | 35.37 | 37.57 | a | 42.53 | 50.70 | 56.23 | ----- | z | ----- | z | 68.45 | 58.53 | 46.43 | a | 38.07 | a | 37.98 | b | 47.19 | b | ||||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | 44.27 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | 60.10 | 61.15 | 66.48 | b | 66.98 | a | 61.45 | 50.47 | 47.50 | e | 39.55 | a | 56.71 | d | ||||
1950 | 31.47 | b | 38.86 | 42.60 | 45.65 | 54.47 | ----- | z | 65.11 | 61.50 | 56.70 | 47.56 | 37.44 | n | 43.54 | f | 49.32 | c | ||||||||
1951 | 36.91 | h | 35.11 | a | 35.71 | 45.86 | a | 50.68 | 62.72 | e | 70.08 | e | 62.67 | e | 60.43 | 50.18 | 35.97 | 29.55 | 49.00 | a | ||||||
1952 | 36.15 | a | 38.35 | e | 45.34 | o | 53.95 | s | ----- | z | ----- | z | 71.28 | a | 66.76 | 59.82 | s | ----- | z | 23.67 | x | 34.50 | 49.41 | g | ||
1953 | 44.02 | a | 41.12 | 42.91 | b | 45.50 | 51.06 | 55.83 | 67.53 | 66.11 | 63.72 | a | 51.02 | 47.36 | a | 39.33 | a | 51.29 | ||||||||
1954 | 34.66 | 40.41 | 38.16 | 47.73 | 55.50 | 56.05 | 67.03 | 63.13 | 57.82 | 48.39 | 45.12 | b | 35.15 | 49.10 | ||||||||||||
1955 | 33.31 | 34.86 | 37.15 | 42.82 | 50.10 | a | 61.18 | b | 60.69 | o | 64.71 | x | 58.15 | c | 51.19 | 35.78 | a | 34.20 | a | 43.87 | b | |||||
1956 | 35.40 | 29.82 | a | 41.05 | 49.67 | 56.33 | a | 58.57 | 65.62 | r | ----- | z | 61.22 | l | 48.27 | 35.40 | 36.74 | 43.47 | c | |||||||
1957 | 19.23 | a | 36.39 | 41.81 | b | 48.18 | 56.03 | 63.90 | a | 66.10 | 63.35 | a | 61.74 | c | 45.45 | b | 36.03 | a | 37.77 | 48.00 | ||||||
1958 | 34.85 | 43.79 | 37.34 | 44.73 | 59.18 | 63.72 | 70.92 | 71.76 | 59.03 | 52.90 | 39.57 | 38.69 | 51.37 | |||||||||||||
1959 | 34.85 | a | 33.46 | 40.31 | 47.47 | 48.57 | a | 60.17 | 68.11 | 64.73 | 58.47 | 50.94 | 37.97 | 33.35 | 48.20 | |||||||||||
1960 | 27.74 | 34.64 | 41.84 | 47.20 | 51.08 | 63.12 | 72.26 | 64.44 | 61.35 | 51.15 | 39.05 | b | 31.90 | 48.81 | ||||||||||||
1961 | 35.10 | 41.57 | 41.86 | b | 45.72 | 52.19 | 66.30 | 70.57 | a | 71.47 | 54.45 | 47.31 | 34.90 | 32.66 | 49.51 | |||||||||||
1962 | 28.27 | 35.29 | 37.92 | 49.48 | 48.27 | 57.77 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.83 | f | |||||
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 | ----- | z | ----- | z | ----- | z | 60.81 | v | 67.48 | 66.38 | a | 56.58 | 56.25 | a | 43.53 | 31.28 | h | 58.05 | g | |||
1966 | 37.47 | n | 36.63 | a | 43.23 | g | 50.87 | o | 54.12 | s | 62.25 | v | 63.53 | ----- | z | 61.54 | b | 51.98 | 49.44 | n | 38.23 | c | 50.38 | g | ||
1967 | 39.22 | b | 39.16 | f | 40.34 | c | 41.64 | b | 53.80 | d | 62.14 | b | 71.48 | h | 72.88 | b | 65.71 | a | 50.41 | c | 39.08 | j | 30.96 | h | 53.27 | d |
1968 | 33.29 | g | 40.08 | d | 44.38 | g | 46.12 | e | 52.76 | 62.41 | c | 71.18 | a | 64.23 | 60.25 | d | 50.16 | f | 40.96 | d | 33.97 | n | 54.75 | d | ||
1969 | 26.71 | q | ----- | z | 42.12 | j | 46.86 | a | 56.86 | b | 63.68 | 66.32 | 64.60 | 58.78 | 43.92 | a | 38.72 | 33.63 | a | 52.60 | c | |||||
1970 | 33.58 | 38.43 | a | 39.11 | 41.78 | 53.52 | 65.43 | 70.16 | 68.81 | 55.10 | 46.87 | 40.12 | a | 32.02 | 48.74 | |||||||||||
1971 | 35.95 | b | 36.83 | a | 38.77 | 45.31 | a | 54.89 | 57.95 | b | 68.82 | 71.83 | a | 53.50 | 43.23 | 38.88 | a | 33.34 | 48.27 | |||||||
1972 | 32.03 | 37.88 | 45.13 | 44.55 | 56.94 | 63.45 | 69.95 | a | 69.82 | 55.47 | a | 47.41 | c | 39.29 | a | 27.65 | 49.13 | |||||||||
1973 | 31.05 | a | 38.59 | 41.92 | 45.87 | 57.02 | 62.82 | 67.90 | 65.42 | a | 57.07 | 46.12 | g | 39.45 | a | 38.97 | 49.64 | a | ||||||||
1974 | 28.53 | 39.72 | j | 40.00 | a | 45.82 | b | 51.74 | 65.77 | 66.13 | 66.58 | 61.28 | 47.90 | 39.45 | 34.94 | 49.83 | a | |||||||||
1975 | 36.15 | a | 33.85 | a | 37.52 | 40.75 | 51.92 | 55.53 | 68.48 | 63.40 | 61.10 | 49.47 | 39.10 | d | 36.05 | 47.78 | ||||||||||
1976 | 34.13 | a | 34.80 | a | 39.07 | b | 43.78 | 54.53 | 56.84 | a | 66.52 | 62.00 | 60.71 | a | 50.02 | 40.22 | a | 33.34 | 48.00 | |||||||
1977 | 26.44 | 37.59 | 39.32 | 51.95 | a | 47.55 | 63.98 | 66.98 | 71.77 | 56.47 | 48.06 | 35.95 | 36.60 | 48.56 | ||||||||||||
1978 | 33.69 | 37.98 | 45.37 | 44.68 | 49.52 | 61.00 | 67.56 | 66.66 | 56.78 | 50.98 | 31.75 | 28.58 | 47.88 | |||||||||||||
1979 | 16.32 | 36.11 | 43.75 | a | 45.48 | 54.48 | 61.31 | a | 68.03 | a | 66.24 | 62.44 | d | 51.92 | 33.20 | 38.35 | 48.14 | |||||||||
1980 | 28.56 | 37.62 | a | 39.18 | 48.25 | 54.55 | a | 56.07 | 67.03 | b | 62.76 | 61.02 | 50.65 | 42.70 | 39.21 | 48.97 | ||||||||||
1981 | 34.68 | 37.21 | 42.18 | a | 46.80 | 53.77 | a | 60.83 | 68.06 | 73.08 | a | 63.15 | 48.56 | 42.32 | 36.62 | a | 50.61 | |||||||||
1982 | 32.56 | 35.91 | a | 40.18 | a | 43.34 | a | 51.97 | b | 64.48 | b | 68.31 | 69.74 | 57.63 | c | 48.28 | a | 36.79 | a | 32.27 | a | 48.46 | ||||
1983 | 39.76 | b | 41.24 | a | 45.21 | 45.13 | 57.26 | 59.91 | a | 64.95 | 69.98 | 58.41 | a | 50.95 | a | 43.64 | a | 24.58 | a | 50.09 | ||||||
1984 | 33.62 | a | 38.45 | a | 44.90 | 43.98 | 51.78 | b | 57.67 | a | 71.03 | 68.08 | 59.00 | a | 46.08 | a | 38.27 | b | 29.52 | b | 48.53 | |||||
1985 | 26.76 | 33.48 | 40.77 | 51.04 | d | 55.73 | 65.57 | a | 75.56 | 65.53 | 54.00 | e | 48.60 | 28.24 | c | 23.90 | 47.43 | |||||||||
1986 | 39.33 | b | 40.63 | a | 46.73 | 44.82 | b | 55.72 | a | 68.82 | 64.67 | a | 73.84 | c | 55.17 | 50.42 | 41.38 | d | 33.90 | 51.28 | ||||||
1987 | 32.71 | c | 38.07 | a | 41.91 | c | 53.61 | b | 58.69 | 67.78 | a | 65.82 | ----- | z | 64.77 | 55.97 | b | 42.09 | b | 32.83 | b | 50.39 | a | |||
1988 | 32.63 | a | 39.19 | 43.04 | c | 49.78 | c | 54.03 | b | 61.54 | c | 71.13 | 68.95 | b | 61.60 | e | 60.42 | 41.64 | a | 33.92 | a | 51.49 | ||||
1989 | 35.53 | a | 24.98 | b | 41.15 | d | 50.95 | b | 53.21 | c | 64.27 | d | 68.95 | b | 65.10 | a | 60.43 | b | 51.15 | a | 42.98 | 34.05 | 49.40 | |||
1990 | 35.42 | a | 36.06 | a | 43.10 | a | 51.59 | a | 53.28 | a | 61.20 | b | 72.59 | d | 69.22 | a | 66.00 | 51.69 | d | 42.62 | a | 25.98 | c | 50.73 | ||
1991 | 32.67 | a | 44.72 | c | 39.97 | b | 43.60 | f | 50.69 | b | 56.28 | a | 69.17 | d | 73.50 | b | 65.10 | e | 52.33 | a | 44.39 | c | 36.45 | 51.39 | a | |
1992 | 37.83 | e | 41.50 | a | 45.69 | 50.64 | a | 59.26 | d | 67.77 | b | 67.87 | d | 70.62 | b | 60.82 | b | 52.83 | b | 37.79 | b | 31.75 | a | 52.03 | ||
1993 | 24.00 | b | 28.44 | c | 42.63 | d | 46.00 | f | 60.33 | g | 59.14 | h | 63.23 | e | 66.67 | d | 60.52 | e | 53.86 | b | 33.92 | e | 34.35 | g | 46.66 | d |
1994 | 38.98 | h | 34.98 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.73 | 37.07 | 41.53 | 47.29 | 54.12 | 61.57 | 68.36 | 67.44 | 59.89 | 50.86 | 39.80 | 34.33 | 49.64 | |||||||||||||
S.D. | 5.54 | 3.95 | 2.71 | 3.28 | 3.05 | 3.32 | 2.46 | 3.23 | 3.07 | 3.42 | 4.13 | 4.14 | 1.44 | |||||||||||||
SKEW | -1.12 | -0.69 | 0.43 | 0.43 | -0.15 | 0.04 | 0.28 | 0.16 | -0.04 | 0.30 | -0.07 | -0.53 | 0.65 | |||||||||||||
MAX | 44.02 | 44.72 | 49.63 | 56.78 | 60.10 | 68.82 | 75.56 | 73.84 | 66.00 | 60.42 | 49.40 | 42.08 | 53.61 | |||||||||||||
MIN | 16.07 | 24.98 | 35.71 | 40.75 | 47.55 | 55.53 | 63.23 | 61.50 | 53.50 | 43.23 | 28.24 | 23.90 | 47.43 | |||||||||||||
YRS | 52 | 53 | 52 | 51 | 54 | 52 | 51 | 51 | 54 | 53 | 53 | 53 | 37 |