YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1932 | 26.24 | 39.98 | 34.71 | 51.45 | 62.26 | 68.90 | a | 80.17 | a | 76.26 | 66.16 | b | 50.55 | a | 41.66 | a | 21.79 | 51.68 | ||||||||
1933 | 32.82 | 27.95 | 42.58 | 47.62 | 58.74 | 74.13 | 77.90 | 73.66 | 69.88 | 55.18 | a | 43.63 | 38.68 | 53.57 | ||||||||||||
1934 | 36.35 | 37.09 | 43.92 | a | 52.38 | a | 67.52 | h | 74.02 | 80.69 | 77.53 | 63.35 | 58.76 | h | 42.00 | w | 33.24 | 55.40 | c | |||||||
1935 | 36.55 | 37.57 | 45.08 | 48.83 | 53.76 | 69.27 | 78.55 | a | 76.42 | ----- | z | ----- | z | ----- | z | ----- | z | 55.75 | d | |||||||
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 | 48.22 | g | 63.05 | 76.78 | c | 75.45 | b | 72.35 | e | 67.83 | d | 54.68 | a | 35.67 | 33.21 | 59.88 | d | |||
1957 | 25.08 | 39.00 | d | 39.17 | b | 44.80 | 56.40 | 66.15 | 75.34 | 72.50 | b | 61.18 | b | 52.82 | a | 35.25 | j | 36.00 | b | 51.68 | a | |||||
1958 | 29.84 | 34.69 | a | 31.90 | 45.50 | 62.82 | a | 69.84 | b | 71.56 | 73.90 | b | 65.90 | a | 52.27 | 39.40 | 33.21 | 50.90 | ||||||||
1959 | 27.12 | a | 30.66 | 38.58 | 46.13 | 59.65 | a | 72.20 | b | 73.34 | b | 74.88 | k | 61.58 | 48.22 | a | 36.48 | 33.53 | b | 47.95 | a | |||||
1960 | 24.90 | 22.67 | 35.95 | 52.48 | a | 58.48 | 70.33 | 74.44 | m | 74.35 | 65.58 | 53.80 | c | 39.53 | 27.39 | 47.77 | a | |||||||||
1961 | 29.82 | 34.38 | 39.70 | a | 47.35 | 59.42 | 69.15 | m | 72.33 | a | 72.47 | 60.04 | b | 51.82 | i | 36.38 | 25.47 | a | 47.74 | b | ||||||
1962 | 21.48 | 36.39 | 36.89 | 51.62 | 62.63 | 67.41 | b | 72.70 | a | 73.80 | i | 63.92 | d | 55.89 | c | 41.03 | 34.34 | 49.48 | a | |||||||
1963 | 19.48 | a | 36.88 | 41.08 | a | 52.77 | b | 63.17 | b | 71.36 | b | 78.76 | 73.52 | a | 68.39 | c | 60.80 | i | 41.08 | 26.29 | 52.07 | a | ||||
1964 | 29.77 | 27.24 | 33.87 | 48.41 | a | 61.06 | 69.83 | a | 79.03 | b | 72.44 | 64.24 | a | 53.19 | g | 37.96 | b | 31.10 | 50.45 | a | ||||||
1965 | 34.00 | 29.59 | 28.88 | c | 52.26 | a | 60.62 | a | 66.71 | d | 74.70 | a | 68.65 | 58.48 | 55.42 | g | 43.66 | a | 34.31 | b | 50.17 | a | ||||
1966 | 22.21 | 28.09 | 42.80 | d | 48.48 | 61.29 | 70.37 | c | 79.39 | d | 70.00 | a | 65.04 | c | 53.29 | g | 41.03 | a | 28.70 | a | 50.67 | a | ||||
1967 | 31.90 | 34.00 | a | 44.53 | a | 52.57 | 56.53 | a | 66.78 | 73.53 | 69.41 | b | 62.23 | 53.65 | g | 38.40 | 24.42 | 50.39 | a | |||||||
1968 | 28.79 | b | 33.52 | 40.89 | 44.87 | 55.53 | a | 70.44 | c | 73.05 | 69.62 | b | 62.11 | b | 55.85 | h | 36.83 | 27.47 | 49.37 | a | ||||||
1969 | 32.74 | 33.79 | 30.81 | 52.00 | 60.37 | 64.95 | 75.12 | a | 73.76 | 65.45 | b | 44.59 | h | 37.85 | 31.77 | 50.78 | a | |||||||||
1970 | 27.80 | a | 35.79 | b | 33.55 | 44.38 | a | 60.10 | 67.05 | a | 74.50 | a | 74.26 | 62.48 | g | 47.44 | f | 38.63 | 31.58 | a | 48.76 | b | ||||
1971 | 27.87 | 31.96 | 38.59 | b | 48.24 | c | 55.52 | b | 71.12 | a | 71.45 | 70.40 | a | 58.98 | 49.43 | c | 37.67 | 31.03 | 49.36 | |||||||
1972 | 27.32 | a | 35.36 | a | 44.82 | 50.37 | d | 58.08 | a | 70.52 | c | 71.18 | 69.86 | c | 60.98 | j | 51.36 | b | 31.28 | 21.53 | a | 48.33 | a | |||
1973 | 27.43 | a | 34.06 | a | 39.29 | 43.74 | a | 55.92 | 67.84 | h | 71.85 | 71.20 | h | 60.30 | 52.77 | 37.30 | 29.13 | 45.18 | b | |||||||
1974 | 23.77 | 34.77 | 44.06 | e | 50.13 | d | ----- | z | 67.98 | c | 74.43 | a | 68.37 | a | 59.98 | a | 54.08 | a | 39.57 | c | ----- | z | 51.72 | b | ||
1975 | 26.39 | 31.30 | a | 38.09 | c | 47.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.72 | h | ||
1976 | ----- | z | 36.76 | h | 37.76 | d | 48.66 | e | 58.13 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.70 | h | 48.18 | i |
1977 | 21.21 | q | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.60 | p | 64.13 | o | 51.86 | f | 38.98 | f | 32.79 | q | ----- | z |
1978 | 20.43 | x | ----- | z | ----- | z | ----- | z | ----- | z | 64.85 | t | 70.56 | w | ----- | z | ----- | z | ----- | z | 29.29 | w | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | 39.05 | u | 53.25 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.25 | 33.33 | 38.65 | 48.84 | 59.25 | 69.82 | 75.23 | 72.49 | 63.53 | 52.59 | 38.75 | 30.20 | 51.37 | |||||||||||||
S.D. | 4.48 | 4.16 | 4.64 | 2.94 | 2.78 | 2.91 | 3.08 | 2.66 | 3.25 | 2.35 | 2.89 | 4.58 | 1.75 | |||||||||||||
SKEW | 0.08 | -0.72 | -0.39 | -0.17 | -0.24 | 0.51 | 0.40 | 0.12 | 0.21 | -0.42 | -0.42 | -0.31 | 0.16 | |||||||||||||
MAX | 36.55 | 39.98 | 45.08 | 52.77 | 63.17 | 76.78 | 80.69 | 77.53 | 69.88 | 55.89 | 43.66 | 38.68 | 53.57 | |||||||||||||
MIN | 19.48 | 22.67 | 28.88 | 43.74 | 53.76 | 64.95 | 71.18 | 68.37 | 58.48 | 48.22 | 31.28 | 21.53 | 49.36 | |||||||||||||
YRS | 23 | 23 | 24 | 24 | 22 | 21 | 22 | 20 | 20 | 12 | 20 | 21 | 4 |