YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1926 | 28.16 | 38.88 | 43.65 | 54.22 | 57.82 | 69.50 | a | 75.37 | 72.60 | a | 56.53 | 52.58 | 43.20 | 29.06 | 51.80 | |||||||||||
1927 | 30.21 | 38.22 | a | 40.44 | 47.12 | a | 53.80 | a | 64.91 | b | 72.92 | a | 70.02 | 58.13 | c | 52.18 | 44.07 | b | 26.43 | b | 49.87 | |||||
1928 | 28.21 | 32.78 | 44.00 | 46.27 | 63.53 | 61.83 | 74.27 | 69.60 | 62.84 | a | 51.82 | 40.02 | 25.21 | 50.03 | ||||||||||||
1929 | 20.07 | j | 23.26 | a | 42.24 | 46.27 | 56.03 | 62.95 | 72.89 | 74.82 | a | 52.64 | s | 51.66 | 34.18 | 34.65 | 49.89 | b | ||||||||
1930 | 14.35 | 38.66 | 42.79 | 54.50 | 55.32 | 63.83 | 74.61 | 73.06 | 61.73 | 49.13 | 35.63 | 21.86 | b | 48.79 | ||||||||||||
1931 | 29.03 | b | 35.61 | 42.85 | 49.92 | 60.53 | a | 67.30 | 76.79 | 74.92 | 62.93 | 52.81 | 34.89 | b | 26.27 | 51.16 | ||||||||||
1932 | 25.76 | b | 30.22 | 41.53 | 51.70 | 58.35 | 66.47 | 71.32 | 68.15 | 61.82 | 50.79 | 41.07 | 23.10 | 49.19 | ||||||||||||
1933 | 29.98 | 22.11 | a | 41.15 | 48.53 | 53.73 | 68.53 | 74.98 | 70.87 | 59.67 | 54.65 | 40.90 | 40.69 | 50.48 | ||||||||||||
1934 | 39.24 | 43.48 | 49.66 | 57.22 | 64.66 | 65.36 | a | 75.50 | c | 72.42 | 60.35 | 53.34 | 45.12 | 32.37 | 54.89 | |||||||||||
1935 | 29.74 | 32.70 | 40.19 | b | 48.73 | 55.98 | 65.35 | 71.69 | 70.06 | 64.78 | 50.81 | 33.47 | 27.79 | 49.28 | ||||||||||||
1936 | 30.73 | 28.31 | 41.13 | 54.08 | 61.53 | 67.88 | 75.76 | 73.52 | 61.10 | 54.47 | 35.05 | 34.11 | 51.47 | |||||||||||||
1937 | 14.60 | 30.91 | 43.39 | 47.43 | 59.55 | 64.58 | 74.74 | 69.27 | 64.43 | 54.81 | 44.35 | 36.05 | 50.34 | |||||||||||||
1938 | 34.63 | 39.34 | 40.05 | 49.93 | 54.87 | 65.43 | 73.24 | 69.89 | 66.97 | 53.02 | 34.53 | 32.79 | 51.22 | |||||||||||||
1939 | 32.81 | 30.95 | 43.47 | 52.58 | 60.03 | 61.72 | 73.21 | 72.44 | 63.02 | 51.35 | 39.87 | 38.21 | 51.64 | |||||||||||||
1940 | 33.02 | 38.79 | 45.00 | 49.90 | 60.45 | 68.72 | 72.69 | 72.16 | 62.52 | 54.61 | 35.82 | 34.65 | 52.36 | |||||||||||||
1941 | 32.85 | 39.14 | 44.94 | 49.10 | 58.52 | 62.75 | 73.03 | 69.27 | 57.38 | 51.19 | 41.55 | 35.26 | 51.25 | |||||||||||||
1942 | 22.65 | 31.95 | 40.47 | 51.92 | 53.79 | 60.10 | 73.52 | 70.40 | 60.92 | 52.66 | 39.46 | b | 33.95 | 49.31 | ||||||||||||
1943 | 29.48 | 36.39 | 40.74 | 54.80 | 54.03 | 61.42 | 70.98 | 68.71 | 64.20 | 54.07 | a | 39.55 | 32.35 | 50.56 | ||||||||||||
1944 | 27.25 | k | 36.10 | 38.31 | 50.32 | 58.74 | 61.28 | 70.40 | 68.71 | 63.10 | 57.52 | 39.47 | 30.14 | b | 52.19 | a | ||||||||||
1945 | 32.63 | 39.07 | 41.85 | 46.67 | 57.21 | 60.53 | 72.74 | 71.42 | 59.73 | 55.39 | 40.25 | 32.50 | 50.83 | |||||||||||||
1946 | 30.60 | 34.82 | 45.03 | 53.10 | 58.31 | 65.05 | 72.13 | a | 70.40 | 59.55 | 45.98 | 38.57 | 36.28 | b | 50.82 | |||||||||||
1947 | 24.28 | b | 38.66 | 45.47 | 50.32 | 62.23 | 61.37 | 72.90 | 69.44 | 61.87 | 55.32 | 37.50 | 32.81 | 51.01 | ||||||||||||
1948 | 33.48 | 33.84 | 39.17 | a | 48.93 | ----- | z | 66.23 | d | 69.40 | 69.26 | 61.42 | 51.63 | 38.23 | 26.60 | 48.93 | a | |||||||||
1949 | 12.98 | 32.75 | b | 45.05 | 54.28 | 62.83 | a | 64.97 | 71.90 | 71.13 | ----- | z | ----- | z | ----- | z | ----- | z | 51.99 | d | ||||||
1950 | 25.85 | 35.25 | 40.24 | 48.30 | 53.56 | 61.92 | 68.43 | c | ----- | z | 58.88 | d | 53.97 | 41.87 | 36.39 | 47.70 | a | |||||||||
1951 | 29.74 | 36.96 | 38.00 | 50.07 | a | 56.08 | 59.97 | 71.10 | 67.72 | a | 59.52 | 48.56 | 38.26 | a | 28.46 | c | 48.70 | |||||||||
1952 | 25.39 | 30.43 | a | 36.78 | b | 52.64 | b | 56.63 | a | 61.98 | a | 69.56 | 67.57 | i | 61.44 | e | 53.13 | 33.22 | a | 33.56 | 46.80 | a | ||||
1953 | 40.89 | c | 36.69 | d | 43.13 | l | 46.42 | 51.37 | 57.97 | 69.41 | b | 67.83 | e | 62.13 | 51.40 | b | 45.10 | 31.66 | c | 50.99 | a | |||||
1954 | 36.07 | a | 39.24 | c | 39.22 | a | 49.54 | e | 57.79 | b | 59.67 | c | 70.57 | a | 64.17 | a | 58.43 | 48.37 | a | 42.34 | b | 29.56 | 49.58 | |||
1955 | 23.17 | a | 27.62 | b | 37.37 | 44.95 | a | 54.33 | a | 63.07 | c | 67.20 | a | 69.55 | 58.71 | b | 51.27 | c | 34.32 | 35.30 | a | 47.24 | ||||
1956 | 33.02 | 26.76 | 42.59 | b | 50.83 | 58.47 | a | 61.59 | b | 71.61 | d | 64.80 | k | 59.83 | 48.95 | a | 35.17 | 30.57 | a | 47.22 | a | |||||
1957 | 20.21 | 33.95 | 42.77 | a | 49.29 | b | 57.74 | 64.86 | b | 69.50 | 65.71 | g | 61.66 | a | 48.26 | b | 35.41 | a | 34.31 | 47.09 | a | |||||
1958 | 31.13 | a | 41.75 | 40.93 | b | 47.59 | a | 62.44 | 63.73 | f | 70.39 | c | 72.20 | a | 59.38 | 51.77 | c | 38.33 | c | 36.10 | a | 50.18 | a | |||
1959 | 36.53 | 37.15 | d | 40.77 | a | 51.12 | a | 53.38 | a | 65.58 | d | 70.32 | 66.16 | l | 57.57 | a | 50.18 | 35.90 | 29.13 | 47.97 | a | |||||
1960 | 22.76 | b | 33.36 | 43.03 | 49.32 | 53.93 | b | 64.52 | c | 73.43 | a | 64.79 | e | 61.85 | 49.74 | 39.96 | b | 29.44 | 48.84 | |||||||
1961 | 31.44 | 39.57 | a | 43.73 | 47.04 | d | 57.83 | b | 69.17 | d | 71.92 | 73.58 | 55.77 | 48.08 | 36.53 | 29.66 | 50.36 | |||||||||
1962 | 19.82 | 32.05 | 39.16 | 52.84 | a | 55.12 | b | 63.33 | c | 68.61 | c | 67.72 | a | 61.40 | 50.94 | 41.30 | 35.06 | 48.95 | ||||||||
1963 | 23.90 | 42.11 | 43.52 | 47.22 | 59.42 | 63.12 | a | 67.60 | 70.56 | g | 66.45 | a | 54.92 | 41.62 | 27.56 | 48.86 | a | |||||||||
1964 | 26.62 | c | 28.09 | b | 38.77 | 46.57 | 54.72 | a | 61.90 | 70.83 | a | 65.53 | a | 57.60 | a | 51.84 | 37.98 | 34.77 | 47.94 | |||||||
1965 | 32.18 | 36.95 | 37.61 | 51.63 | 54.42 | 62.67 | 69.48 | 67.29 | b | 54.97 | 54.00 | 43.78 | 31.02 | 49.67 | ||||||||||||
1966 | 33.00 | a | 34.05 | 43.24 | 49.17 | a | 59.65 | a | 62.08 | 68.70 | a | 69.45 | b | 63.57 | 48.76 | 43.30 | 32.02 | 50.58 | ||||||||
1967 | 36.02 | 38.27 | 41.98 | a | 44.23 | 55.06 | 64.07 | 73.45 | 71.98 | 65.46 | d | 49.77 | 40.12 | 28.35 | 50.73 | |||||||||||
1968 | 28.03 | 40.29 | 45.37 | 46.13 | 54.70 | c | 64.36 | b | 71.32 | 65.53 | a | 59.67 | 49.26 | 39.02 | 32.35 | 49.67 | ||||||||||
1969 | 31.15 | 33.46 | 39.50 | 50.23 | 58.45 | b | 63.93 | b | 69.72 | a | 68.24 | 62.02 | 45.00 | 38.38 | 33.58 | a | 49.47 | |||||||||
1970 | 35.81 | 38.50 | b | 40.83 | a | 43.68 | 56.04 | c | 66.28 | a | 71.59 | b | 70.25 | e | 56.08 | 46.40 | 41.35 | 32.03 | 49.90 | |||||||
1971 | 32.73 | 35.95 | 38.94 | 48.43 | 58.62 | c | 62.55 | 70.85 | 73.37 | 56.22 | 47.85 | 38.71 | f | 28.55 | 50.37 | a | ||||||||||
1972 | 28.98 | 35.19 | 44.90 | 47.47 | 58.69 | 65.10 | 68.53 | 69.94 | 56.73 | 50.65 | 39.40 | 23.79 | 49.11 | |||||||||||||
1973 | 30.21 | 37.77 | 42.66 | 48.17 | 58.37 | 64.65 | 70.97 | a | 68.89 | 60.27 | 50.44 | 40.25 | 36.00 | a | 50.72 | |||||||||||
1974 | 27.71 | 37.57 | 42.28 | a | 48.62 | 53.97 | a | 67.78 | 70.17 | a | 67.60 | b | 61.38 | b | 50.78 | a | 40.45 | 31.66 | 50.00 | |||||||
1975 | 26.73 | 34.98 | a | 40.56 | 43.55 | 54.58 | 61.70 | 73.73 | 65.62 | b | 61.73 | b | 51.34 | 37.63 | 31.84 | 48.67 | ||||||||||
1976 | 31.81 | 33.74 | 37.27 | 47.10 | 58.16 | 61.35 | 70.97 | 65.52 | a | 61.98 | 49.13 | a | 39.65 | 28.16 | b | 48.74 | ||||||||||
1977 | 19.18 | 33.33 | a | 40.19 | 53.97 | a | 53.16 | 68.37 | 69.78 | b | 70.80 | c | 59.71 | a | 50.42 | 38.88 | 35.76 | 49.46 | ||||||||
1978 | 35.48 | 37.59 | 46.89 | 48.53 | 54.98 | b | 62.78 | 69.56 | 67.47 | 59.72 | 50.97 | 35.32 | 25.76 | 49.59 | ||||||||||||
1979 | 15.66 | 33.82 | 43.60 | 48.38 | 57.94 | 65.42 | 70.37 | 69.27 | a | 64.28 | 53.11 | 34.58 | 35.47 | 49.32 | ||||||||||||
1980 | 31.18 | 39.48 | 41.94 | 53.65 | 57.55 | a | 62.63 | 70.81 | 65.87 | 61.18 | 50.37 | 38.28 | 32.39 | 50.44 | ||||||||||||
1981 | 33.05 | 36.38 | 43.91 | c | 50.47 | a | 56.08 | a | 63.50 | 68.79 | 70.76 | 61.93 | 48.65 | g | 43.17 | 34.73 | 51.16 | a | ||||||||
1982 | 24.79 | 30.57 | 42.60 | a | 46.41 | a | 56.28 | b | 65.93 | 69.18 | 69.56 | 59.31 | a | 51.20 | a | 35.32 | 31.20 | a | 48.53 | |||||||
1983 | 33.77 | 40.79 | 45.68 | 46.88 | a | 56.97 | 64.16 | a | 68.21 | 72.24 | 59.95 | 52.05 | 42.91 | b | 24.45 | a | 50.67 | |||||||||
1984 | 22.76 | 29.91 | 43.79 | 48.57 | c | 55.93 | a | 61.40 | 72.00 | a | 73.12 | a | 58.71 | a | 47.77 | 39.72 | 23.90 | 48.13 | ||||||||
1985 | 19.71 | 27.43 | 38.13 | 52.87 | 58.62 | a | 67.55 | a | 75.42 | 67.12 | b | 54.91 | b | 48.39 | 27.84 | a | 10.43 | a | 45.70 | |||||||
1986 | 27.98 | 41.25 | 48.43 | a | 47.38 | e | 57.96 | c | 69.86 | b | 67.74 | 71.92 | 57.08 | 51.26 | 40.75 | 27.05 | 50.72 | |||||||||
1987 | 27.29 | 37.88 | 44.32 | 55.30 | 61.20 | i | 70.04 | d | 69.23 | 67.06 | 61.91 | a | 52.39 | c | 40.53 | a | 32.56 | 50.77 | a | |||||||
1988 | 25.19 | 36.24 | 43.04 | c | 51.95 | 56.73 | 69.75 | 73.19 | 69.31 | 60.33 | c | 57.69 | b | 39.92 | 26.40 | 50.81 | ||||||||||
1989 | 22.55 | 23.23 | b | 43.73 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.84 | i | |
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 | 63.79 | 69.43 | 70.27 | 73.35 | 63.38 | 54.52 | a | 35.25 | b | 28.77 | 57.35 | d | ||||||
1993 | 25.37 | a | 29.09 | f | 42.53 | 49.70 | 62.60 | 62.21 | b | 62.07 | b | 61.73 | c | 61.61 | b | 53.13 | a | 33.72 | a | 34.57 | a | 49.93 | a | |||
1994 | 32.37 | a | 34.91 | 47.92 | a | 53.45 | 58.93 | b | 63.05 | a | 67.57 | i | 70.21 | g | 65.00 | 50.00 | g | 32.80 | b | 29.65 | h | 48.55 | d | |||
1995 | 36.37 | 41.70 | 44.03 | b | 49.55 | 57.78 | a | 63.38 | 71.81 | b | 65.77 | g | 56.55 | k | 49.11 | c | 43.84 | b | 33.19 | 49.08 | b | |||||
1996 | 33.43 | d | 35.24 | 45.02 | a | 50.17 | c | 53.22 | a | 63.93 | b | 74.66 | b | ----- | z | 59.21 | d | 52.91 | n | 40.98 | c | 35.57 | d | 49.14 | b | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.58 | 34.99 | 42.24 | 49.66 | 57.33 | 64.28 | 71.34 | 69.64 | 60.68 | 51.39 | 38.81 | 31.00 | 49.97 | |||||||||||||
S.D. | 6.01 | 4.69 | 2.76 | 2.99 | 2.96 | 2.82 | 2.52 | 2.77 | 2.72 | 2.61 | 3.51 | 4.77 | 1.44 | |||||||||||||
SKEW | -0.62 | -0.73 | 0.18 | 0.25 | 0.46 | 0.35 | -0.43 | -0.36 | -0.04 | 0.03 | -0.42 | -1.29 | 0.21 | |||||||||||||
MAX | 40.89 | 43.48 | 49.66 | 57.22 | 64.66 | 70.04 | 76.79 | 74.92 | 66.97 | 57.69 | 45.12 | 40.69 | 54.89 | |||||||||||||
MIN | 12.98 | 22.11 | 36.78 | 43.55 | 51.37 | 57.97 | 62.07 | 61.73 | 54.91 | 45.00 | 27.84 | 10.43 | 45.70 | |||||||||||||
YRS | 66 | 67 | 67 | 67 | 66 | 67 | 67 | 59 | 65 | 64 | 66 | 66 | 48 |