YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 53.69 | w | 55.36 | a | 63.39 | 73.23 | 72.11 | 71.31 | 65.43 | 63.53 | 46.43 | 39.55 | 61.15 | c | ||||||||
1951 | 34.47 | 40.46 | 45.27 | a | 53.22 | 63.02 | 70.83 | 79.06 | 77.35 | a | 69.52 | 58.32 | 42.83 | c | 37.98 | 56.03 | ||||||||||
1952 | 39.47 | 40.78 | 42.56 | 53.83 | 63.52 | 74.42 | f | 75.26 | 77.24 | 66.55 | 56.42 | 40.07 | 34.60 | 53.66 | a | |||||||||||
1953 | 43.19 | 38.21 | 50.42 | 53.83 | a | 61.77 | 78.63 | 77.11 | 74.35 | 68.40 | 57.42 | 46.76 | a | 36.55 | j | 59.10 | a | |||||||||
1954 | 39.08 | 47.54 | b | 45.05 | c | 62.41 | a | 62.95 | 76.03 | 79.29 | 76.16 | 71.38 | 58.53 | 47.42 | 40.32 | 58.85 | ||||||||||
1955 | 35.24 | 35.54 | 45.75 | a | 54.98 | b | 63.45 | c | 70.97 | a | 76.05 | 75.15 | 71.72 | a | 58.82 | 44.35 | 39.92 | 55.99 | ||||||||
1956 | 38.45 | 32.74 | 48.42 | 52.97 | 69.89 | 78.17 | 78.90 | a | 77.42 | 74.70 | 62.48 | 42.05 | a | 39.35 | a | 57.96 | ||||||||||
1957 | 36.35 | 47.07 | 45.22 | a | 51.05 | 61.95 | 73.24 | k | 81.37 | 75.78 | d | 67.92 | 55.92 | 39.87 | 42.48 | c | 55.00 | a | ||||||||
1958 | 35.00 | 40.45 | 38.82 | 50.69 | a | 65.15 | 74.15 | 76.00 | g | 76.58 | g | 70.13 | 55.87 | 46.48 | 38.56 | 51.53 | b | |||||||||
1959 | 33.60 | 39.32 | 44.26 | b | 54.09 | a | 66.93 | a | 76.48 | g | 77.18 | 77.29 | 71.81 | a | 55.48 | a | 41.90 | a | 38.56 | 54.58 | a | |||||
1960 | 32.45 | 31.98 | b | 45.12 | a | 56.62 | a | 62.10 | a | 73.12 | 71.21 | c | 74.08 | 67.83 | 55.63 | 46.34 | a | 32.42 | 54.08 | |||||||
1961 | 33.87 | 40.39 | 46.56 | 53.75 | 64.70 | a | 71.52 | 71.79 | 71.77 | 64.18 | 56.27 | 39.20 | 33.97 | a | 54.00 | |||||||||||
1962 | 31.37 | 43.96 | 42.21 | 54.91 | a | 65.34 | 69.53 | 73.56 | 74.85 | 67.40 | 58.61 | 45.00 | c | 38.82 | 55.47 | |||||||||||
1963 | 30.16 | 40.96 | 48.53 | a | 58.90 | a | 65.28 | a | 69.22 | a | 77.07 | d | 73.40 | 69.22 | 62.19 | 47.57 | 34.10 | 56.38 | ||||||||
1964 | 35.79 | 31.12 | 43.69 | 53.72 | a | 65.30 | a | 72.97 | 78.00 | 75.79 | e | 67.33 | 58.92 | 45.03 | 38.34 | 55.50 | ||||||||||
1965 | 40.98 | 37.39 | 38.94 | 57.26 | a | 62.56 | 69.92 | 76.60 | 73.16 | 67.21 | a | 57.48 | 52.35 | 41.06 | 56.24 | |||||||||||
1966 | 30.92 | 35.64 | 48.87 | a | 55.23 | 64.98 | 71.02 | 78.95 | c | 70.77 | 67.85 | 55.68 | 49.57 | a | 35.45 | 55.41 | ||||||||||
1967 | 39.05 | 39.52 | 52.39 | 59.07 | 62.68 | 70.43 | 73.89 | 70.13 | 66.18 | 58.71 | 45.95 | 31.98 | a | 55.83 | ||||||||||||
1968 | 37.52 | 38.46 | a | 45.21 | 53.21 | m | 62.24 | 72.38 | 73.98 | 73.16 | 66.17 | 58.69 | 43.63 | 37.02 | a | 55.32 | a | |||||||||
1969 | 43.55 | b | 40.75 | b | 37.70 | a | 56.52 | a | 64.21 | 69.67 | 79.21 | 77.47 | 67.75 | 53.16 | 45.63 | 39.47 | 56.26 | |||||||||
1970 | 33.66 | 43.09 | a | 42.00 | 52.78 | 63.77 | 69.93 | 75.69 | 75.11 | 66.62 | 51.89 | 45.57 | 41.90 | 55.17 | ||||||||||||
1971 | 37.41 | b | 38.43 | 47.34 | 53.42 | 62.37 | 73.88 | 74.75 | a | 70.17 | b | 65.10 | 55.58 | 46.02 | a | 38.08 | 55.21 | |||||||||
1972 | 39.07 | a | 45.00 | d | 51.94 | 59.02 | c | 63.47 | 73.28 | 72.82 | 71.21 | 66.00 | 56.10 | 38.13 | 35.92 | 56.00 | ||||||||||
1973 | 33.24 | 38.09 | 42.48 | k | 46.88 | 59.65 | 70.58 | 73.21 | 73.50 | b | 65.35 | 58.31 | 48.15 | d | 37.71 | 54.97 | a | |||||||||
1974 | 37.46 | c | 40.89 | 52.58 | 55.07 | 69.00 | 73.82 | 76.03 | 71.03 | b | 61.05 | 56.40 | 43.23 | 34.79 | 55.95 | |||||||||||
1975 | 35.82 | 36.34 | 44.95 | 51.27 | 58.71 | l | 72.80 | o | 70.90 | f | 72.65 | 63.85 | c | 57.40 | 44.05 | 39.98 | 49.59 | c | ||||||||
1976 | 36.19 | 46.21 | 45.82 | 56.22 | 60.38 | a | 71.40 | 72.44 | 73.16 | 66.22 | a | 51.48 | 40.15 | 36.40 | 54.67 | |||||||||||
1977 | 31.52 | 40.59 | 44.65 | 54.88 | 62.48 | 74.63 | 75.68 | 74.48 | a | 69.82 | 58.08 | 46.43 | 41.74 | 56.25 | ||||||||||||
1978 | 31.23 | 32.98 | 46.79 | 56.88 | 61.94 | 72.02 | 77.60 | 72.63 | a | 65.85 | 56.98 | 44.77 | 32.40 | a | 54.34 | |||||||||||
1979 | 27.02 | a | 39.68 | 46.57 | a | 50.65 | m | 62.04 | f | 67.92 | 74.35 | 70.65 | 67.03 | 58.58 | a | 39.27 | 38.27 | 52.93 | b | |||||||
1980 | 36.77 | 38.43 | b | 45.00 | 51.75 | 60.15 | 77.75 | 79.71 | 73.94 | 66.90 | a | 54.26 | 42.67 | 43.61 | c | 55.91 | ||||||||||
1981 | 38.53 | 42.48 | 46.00 | a | 57.88 | ----- | z | 77.90 | t | 74.79 | 71.40 | 64.37 | 54.10 | 48.93 | 40.73 | g | 55.39 | c | ||||||||
1982 | 38.50 | 38.11 | 47.50 | 54.41 | a | 61.82 | a | 69.75 | 75.25 | a | 74.37 | 66.50 | e | 54.58 | 43.08 | 35.86 | b | 54.98 | ||||||||
1983 | 35.68 | a | 38.18 | 45.16 | 48.77 | 58.85 | 68.69 | a | 75.50 | 76.74 | 70.53 | 58.12 | a | 48.31 | f | 31.76 | d | 55.27 | a | |||||||
1984 | 34.55 | b | 40.27 | a | 44.65 | a | 51.07 | a | 65.00 | h | 70.43 | 73.77 | 72.05 | a | 64.97 | 52.89 | 44.17 | 38.76 | b | 53.42 | a | |||||
1985 | 32.57 | a | 37.89 | a | 46.87 | 54.97 | 63.35 | 71.70 | 75.15 | 74.76 | 67.48 | b | 56.66 | c | 46.28 | 34.33 | a | 55.17 | ||||||||
1986 | 42.37 | a | 39.98 | a | 50.45 | 57.55 | 62.90 | 70.15 | 76.19 | 74.56 | e | 66.90 | a | 54.40 | 41.48 | 35.37 | a | 56.03 | ||||||||
1987 | 33.23 | 39.86 | 43.18 | 52.87 | 62.69 | b | 71.53 | 75.79 | 72.95 | 65.53 | a | 58.31 | 44.12 | 33.34 | 54.45 | |||||||||||
1988 | 31.94 | 39.43 | a | 44.81 | 53.29 | a | 61.77 | a | 70.50 | 72.44 | 72.44 | 65.58 | 58.29 | 46.72 | 34.78 | f | 56.11 | a | ||||||||
1989 | 39.12 | a | 34.73 | 51.73 | 58.27 | 67.29 | 69.52 | 74.63 | 72.24 | d | 67.38 | m | 59.34 | b | 47.66 | e | 32.73 | 55.20 | a | |||||||
1990 | 35.40 | e | 40.10 | b | 45.69 | 55.28 | g | 62.26 | 79.07 | 73.83 | a | 72.89 | 68.70 | 56.09 | b | 46.94 | m | 33.37 | a | 56.74 | b | |||||
1991 | 32.18 | a | 44.50 | 46.90 | a | 55.42 | 66.37 | d | 73.14 | a | 72.12 | a | 72.12 | a | 63.86 | a | 56.98 | a | 40.68 | 37.18 | a | 55.12 | ||||
1992 | 35.74 | 43.31 | 49.18 | a | 58.00 | a | 61.18 | a | 69.38 | b | 75.61 | d | 71.40 | b | 67.27 | 60.16 | b | 41.17 | a | 36.05 | b | 55.70 | ||||
1993 | 35.14 | b | 38.07 | a | 45.80 | d | 56.07 | a | 63.97 | a | 72.45 | a | 76.85 | a | 72.39 | d | 66.26 | c | 54.60 | b | 41.08 | 38.87 | 55.13 | |||
1994 | 36.70 | a | 40.54 | 47.85 | 54.88 | 64.10 | f | 76.50 | h | 76.37 | 75.26 | d | 69.20 | 56.73 | 46.30 | 41.47 | 54.53 | b | ||||||||
1995 | 38.68 | 45.18 | 47.82 | 54.27 | 62.71 | 71.33 | 76.27 | 76.32 | 67.88 | 58.84 | 47.91 | c | 36.02 | e | 56.94 | |||||||||||
1996 | 37.55 | 41.88 | 45.05 | 57.73 | 71.77 | 74.57 | b | 76.34 | b | 73.45 | 64.69 | a | 55.29 | b | 45.53 | 40.11 | 57.00 | |||||||||
1997 | 33.69 | 37.23 | 50.89 | d | 47.71 | a | 62.41 | c | 71.08 | 76.37 | 75.26 | j | 71.28 | 57.97 | b | 42.53 | 32.71 | b | 53.08 | a | ||||||
1998 | 39.68 | a | 40.05 | 43.85 | a | 52.26 | e | 68.02 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.77 | g | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.86 | 39.66 | 46.09 | 54.61 | 63.68 | 72.15 | 75.66 | 73.71 | 67.31 | 57.01 | 44.45 | 37.17 | 55.73 | |||||||||||||
S.D. | 3.50 | 3.67 | 3.31 | 3.07 | 2.64 | 2.72 | 2.33 | 2.11 | 2.52 | 2.48 | 3.09 | 3.15 | 1.05 | |||||||||||||
SKEW | 0.03 | -0.10 | -0.18 | -0.21 | 1.02 | 1.00 | 0.20 | 0.22 | 0.48 | 0.19 | -0.01 | -0.02 | 0.85 | |||||||||||||
MAX | 43.55 | 47.54 | 52.58 | 62.41 | 71.77 | 79.07 | 81.37 | 77.47 | 74.70 | 63.53 | 52.35 | 43.61 | 58.85 | |||||||||||||
MIN | 27.02 | 31.12 | 37.70 | 46.88 | 58.85 | 67.92 | 71.21 | 70.13 | 61.05 | 51.48 | 38.13 | 31.76 | 54.00 | |||||||||||||
YRS | 48 | 48 | 47 | 46 | 44 | 42 | 46 | 46 | 47 | 48 | 46 | 45 | 30 |