YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1929 | 37.28 | d | 37.46 | d | 49.88 | b | 51.04 | d | 57.83 | a | 69.53 | 72.32 | c | 65.87 | a | 63.15 | c | 50.48 | c | 40.22 | 31.48 | b | 52.21 | |||
1930 | 32.47 | a | 35.04 | a | 33.75 | a | 47.21 | a | 56.34 | 59.16 | b | 66.91 | c | 64.76 | 59.82 | 44.94 | 36.12 | 28.34 | 47.07 | |||||||
1931 | 33.10 | 35.98 | 36.06 | 47.58 | 56.73 | 65.37 | 71.47 | 67.31 | 66.02 | 54.73 | 49.78 | 44.26 | 52.36 | |||||||||||||
1932 | 42.03 | 43.57 | 36.77 | 48.82 | 57.43 | a | 66.57 | 71.29 | 68.03 | 61.93 | 52.66 | 40.22 | a | 40.39 | 52.48 | |||||||||||
1933 | 40.55 | 35.05 | 41.50 | 49.25 | 62.31 | 67.48 | 68.03 | 67.37 | 67.75 | 52.42 | 41.37 | 42.80 | a | 52.99 | ||||||||||||
1934 | 36.84 | 29.75 | 41.08 | a | 50.62 | 59.77 | 67.97 | 72.21 | 69.60 | 64.47 | 53.21 | 44.62 | 33.23 | a | 51.95 | |||||||||||
1935 | 35.23 | 36.54 | 47.82 | 49.23 | 59.24 | 63.70 | 68.60 | 69.02 | 63.23 | 53.72 | a | 46.92 | 28.27 | a | 51.79 | |||||||||||
1936 | 30.78 | a | 32.75 | a | 44.24 | 49.18 | 60.89 | 68.03 | 72.03 | 69.73 | 64.97 | 55.60 | 42.22 | 39.26 | 52.47 | |||||||||||
1937 | 47.12 | a | 33.12 | c | 39.62 | a | 48.20 | 57.82 | 67.60 | 68.05 | 69.16 | 61.78 | 49.50 | 39.55 | 35.68 | 51.43 | ||||||||||
1938 | 34.89 | 42.05 | 48.48 | 51.35 | 59.08 | 63.84 | a | 68.24 | 70.26 | 64.13 | 54.77 | 45.38 | a | 34.82 | 53.11 | |||||||||||
1939 | 36.81 | 41.59 | a | 44.89 | 48.77 | b | 59.36 | b | 71.87 | 71.53 | 70.53 | 68.55 | 56.21 | b | 41.93 | c | 40.83 | k | 55.64 | a | ||||||
1940 | 23.65 | d | 36.94 | b | 39.03 | a | 49.52 | d | 56.76 | 66.52 | 67.85 | 67.92 | 59.35 | 52.87 | a | 42.05 | a | 40.03 | p | 51.13 | a | |||||
1941 | 37.89 | c | 29.48 | b | 34.29 | 52.47 | 60.39 | h | 68.65 | 71.31 | 72.03 | a | 65.75 | 59.45 | a | 43.27 | h | 38.44 | m | 54.59 | c | |||||
1942 | 31.57 | c | 29.24 | e | 40.78 | a | 52.53 | a | 59.40 | 66.85 | 70.35 | 67.56 | 62.53 | 53.95 | c | 45.40 | 35.27 | 51.29 | ||||||||
1943 | 38.02 | j | 36.71 | 40.59 | b | 46.77 | 59.34 | 69.00 | b | 68.94 | 70.22 | a | 59.95 | 51.37 | 41.70 | 36.26 | 52.80 | a | ||||||||
1944 | 35.34 | 39.31 | 42.05 | 48.02 | 60.33 | a | 67.63 | 65.42 | a | 66.28 | a | 62.27 | 50.73 | 39.63 | 30.87 | 50.66 | ||||||||||
1945 | 31.88 | a | 36.89 | 50.92 | a | 52.25 | 54.95 | 64.55 | 68.10 | 66.55 | c | 64.20 | 50.24 | 43.58 | 28.37 | a | 51.04 | |||||||||
1946 | 34.55 | 36.94 | c | 47.69 | 52.18 | 55.53 | 63.48 | 67.74 | 64.15 | a | 59.39 | b | 51.79 | 46.17 | d | 36.52 | j | 52.69 | a | |||||||
1947 | 39.64 | b | ----- | z | 32.71 | 51.45 | 56.95 | 62.84 | a | 63.40 | 69.02 | 62.27 | 55.00 | 39.67 | 36.76 | j | 53.29 | b | ||||||||
1948 | 27.74 | 38.22 | 45.17 | b | 52.93 | b | 57.78 | a | 65.98 | 69.11 | 66.53 | 60.28 | 49.05 | 45.56 | d | 40.41 | h | 52.58 | a | |||||||
1949 | 42.32 | 40.71 | 41.08 | 47.50 | d | 57.43 | a | 65.52 | 70.41 | b | 66.98 | e | 58.67 | 56.29 | 41.43 | a | 38.66 | 52.25 | ||||||||
1950 | 46.16 | 39.02 | a | 38.79 | 47.18 | 60.11 | 65.62 | 66.95 | 65.31 | 59.78 | a | 54.39 | 36.62 | a | 29.73 | 50.80 | ||||||||||
1951 | 33.97 | 35.82 | 40.98 | 47.40 | 56.97 | 66.44 | l | 68.11 | 67.55 | 60.88 | 53.32 | 35.25 | 34.90 | 48.65 | a | |||||||||||
1952 | 37.55 | 36.93 | 39.24 | 49.48 | 58.43 | a | 70.47 | 69.90 | 66.52 | 60.33 | 48.68 | 41.10 | 34.97 | a | 51.13 | |||||||||||
1953 | 36.98 | 37.06 | a | 43.39 | 49.62 | b | 63.76 | 67.72 | 67.13 | 66.19 | 58.80 | 51.39 | 40.48 | 34.02 | b | 51.38 | ||||||||||
1954 | 34.92 | a | 38.25 | 41.43 | b | 55.36 | a | 54.16 | 66.40 | 69.41 | d | 68.95 | 64.00 | 51.52 | d | 36.88 | 31.07 | a | 51.03 | |||||||
1955 | 30.35 | 35.48 | b | 42.39 | 52.63 | c | 60.13 | a | 59.24 | a | 69.05 | 69.62 | a | 62.13 | 52.31 | 39.83 | a | 32.05 | b | 50.43 | ||||||
1956 | 27.74 | d | 36.80 | a | 40.15 | 47.18 | b | 60.10 | b | 66.02 | b | 67.00 | 66.58 | 58.20 | b | 52.93 | a | 42.69 | f | 43.42 | a | 51.47 | a | |||
1957 | 33.62 | a | 40.39 | 39.26 | 52.73 | 59.45 | 65.85 | 66.94 | 64.69 | 62.26 | a | 48.47 | a | 43.43 | c | 36.75 | a | 51.15 | ||||||||
1958 | 27.35 | 24.30 | a | 36.82 | 50.33 | 59.35 | 65.55 | 70.02 | b | 68.48 | 61.87 | 51.93 | a | 46.25 | 32.31 | 49.55 | ||||||||||
1959 | 32.23 | 37.62 | 39.90 | 52.91 | a | 62.55 | 65.41 | a | 69.48 | 69.87 | 62.80 | 54.97 | 41.82 | 37.21 | 52.23 | |||||||||||
1960 | 33.84 | 32.64 | a | 27.11 | 53.07 | a | 56.50 | 65.42 | 67.50 | 69.15 | 63.03 | 54.23 | 43.07 | 30.10 | b | 49.64 | ||||||||||
1961 | 28.74 | 38.45 | 46.21 | c | 45.40 | 55.12 | a | 63.38 | a | 67.68 | 67.18 | 64.00 | 50.94 | 45.80 | 35.32 | a | 50.68 | |||||||||
1962 | 33.23 | a | 41.15 | a | 38.47 | 46.86 | a | 65.02 | a | 65.05 | a | 68.08 | 66.95 | 60.33 | 53.13 | 41.15 | 30.77 | 50.85 | ||||||||
1963 | 30.39 | 29.62 | 45.57 | a | 52.38 | 59.18 | a | 64.67 | a | 66.32 | 66.95 | b | 59.75 | 53.85 | 43.03 | 25.98 | b | 49.81 | ||||||||
1964 | 33.98 | a | 30.28 | 41.50 | a | 52.69 | a | 60.22 | a | 67.58 | 67.92 | a | 66.50 | a | 60.83 | 47.97 | 46.32 | 37.71 | 51.12 | |||||||
1965 | 34.65 | 34.83 | b | 39.24 | 53.73 | 63.06 | 63.60 | 68.65 | 67.84 | 63.02 | 49.94 | 43.97 | a | 37.27 | 51.65 | |||||||||||
1966 | 26.75 | a | 33.23 | 41.42 | 49.42 | 59.27 | 64.41 | a | 68.69 | 67.37 | 59.10 | 50.61 | 42.97 | 34.60 | 49.82 | |||||||||||
1967 | 36.40 | 31.91 | a | 46.61 | 55.05 | a | 57.00 | 63.52 | 65.81 | 64.68 | 56.36 | b | 50.98 | 39.88 | b | 38.27 | 50.54 | |||||||||
1968 | 31.63 | a | 26.83 | 43.89 | 52.52 | b | 57.13 | a | 65.68 | 68.25 | a | 69.08 | a | 59.95 | 51.72 | a | 41.73 | b | 32.20 | a | 50.05 | |||||
1969 | 31.55 | 31.57 | 34.06 | d | 52.69 | a | 59.00 | b | 66.73 | 69.74 | 65.65 | 59.92 | 52.06 | 39.60 | 30.97 | 49.46 | ||||||||||
1970 | 28.93 | b | 34.54 | 41.23 | c | 53.28 | c | 59.98 | a | 65.65 | 68.53 | 66.69 | 63.50 | a | 51.63 | 40.55 | b | 37.98 | 51.04 | |||||||
1971 | 31.06 | 32.89 | a | 37.72 | a | 50.50 | 56.52 | a | 66.62 | 66.77 | a | 66.83 | d | 63.48 | 57.35 | a | 40.39 | b | 44.12 | a | 51.19 | |||||
1972 | 37.52 | 32.07 | b | 41.13 | 51.30 | 57.34 | c | 61.79 | b | 67.41 | c | 67.04 | c | 62.23 | b | 50.08 | a | 40.14 | a | 42.28 | b | 50.86 | ||||
1973 | 33.18 | 32.93 | 47.55 | a | 48.07 | a | 56.52 | a | 66.52 | d | 68.39 | d | 67.15 | a | 64.36 | a | 54.18 | a | 46.07 | a | 34.88 | a | 51.65 | |||
1974 | 45.56 | 37.04 | b | 47.16 | b | 51.12 | b | 60.16 | c | 60.81 | a | 66.81 | d | 65.95 | c | 59.03 | 50.40 | 42.97 | 35.32 | a | 51.86 | |||||
1975 | 38.31 | 38.36 | 40.22 | a | 49.20 | c | 61.31 | b | 64.75 | b | 66.98 | b | 68.47 | a | 60.40 | a | 55.15 | a | 45.14 | a | 36.02 | a | 52.02 | |||
1976 | 30.00 | a | 41.91 | 46.66 | 52.03 | a | 56.53 | a | 63.28 | 66.11 | 64.80 | a | 59.31 | a | 48.56 | 38.45 | b | 31.92 | 49.96 | |||||||
1977 | 20.19 | 32.77 | 46.74 | 53.88 | 61.55 | a | 65.62 | a | 71.18 | 69.08 | 64.05 | 49.52 | b | 45.43 | a | 33.15 | d | 51.10 | ||||||||
1978 | 24.32 | 26.54 | b | 40.92 | 52.72 | 58.13 | a | 66.71 | a | 69.53 | 69.56 | 65.95 | 51.52 | 47.00 | b | 36.94 | 50.82 | |||||||||
1979 | 27.76 | 29.38 | 44.87 | a | 51.35 | 58.63 | a | 63.95 | b | 67.45 | 68.50 | a | 62.61 | b | 51.05 | a | 45.17 | d | 37.45 | 50.68 | ||||||
1980 | 34.98 | 30.37 | b | 39.19 | b | 50.62 | 59.63 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.96 | g | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.83 | 35.07 | 41.50 | 50.57 | 58.79 | 65.60 | 68.53 | 67.61 | 62.01 | 52.23 | 42.33 | 35.06 | 51.09 | |||||||||||||
S.D. | 5.51 | 4.36 | 4.69 | 2.39 | 2.28 | 2.49 | 1.88 | 1.76 | 2.54 | 2.65 | 3.15 | 4.41 | 1.12 | |||||||||||||
SKEW | 0.20 | -0.30 | -0.40 | -0.14 | 0.43 | -0.29 | 0.10 | 0.14 | 0.32 | 0.08 | -0.06 | 0.26 | -0.95 | |||||||||||||
MAX | 47.12 | 43.57 | 50.92 | 55.36 | 65.02 | 71.87 | 72.32 | 72.03 | 68.55 | 59.45 | 49.78 | 44.26 | 53.11 | |||||||||||||
MIN | 20.19 | 24.30 | 27.11 | 45.40 | 54.16 | 59.16 | 63.40 | 64.15 | 56.36 | 44.94 | 35.25 | 25.98 | 47.07 | |||||||||||||
YRS | 51 | 51 | 52 | 52 | 51 | 50 | 51 | 51 | 51 | 51 | 49 | 45 | 42 |