YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | 39.90 | j | 38.18 | 40.87 | 56.37 | 62.48 | 61.87 | 72.65 | 76.48 | 65.30 | 54.32 | 46.67 | 41.48 | 56.06 | a | |||||||||||
1940 | 40.03 | 42.41 | b | 50.94 | 54.50 | 66.48 | 70.60 | 71.52 | 74.00 | 68.37 | 56.77 | 39.24 | a | 40.06 | 56.24 | |||||||||||
1941 | 38.58 | 46.82 | 56.23 | 59.72 | e | 60.97 | a | 66.43 | 79.27 | a | 72.61 | 60.90 | a | 55.07 | a | 47.90 | 38.94 | 56.95 | ||||||||
1942 | 39.23 | 42.82 | 49.57 | c | 54.38 | n | 57.61 | ----- | z | 73.50 | a | 77.30 | a | 70.45 | a | ----- | z | ----- | z | 36.57 | a | 55.88 | d | |||
1943 | 37.58 | e | 44.81 | a | 48.41 | i | 58.73 | h | 58.71 | g | 63.73 | 72.52 | 69.74 | ----- | z | ----- | z | 50.25 | v | 37.77 | a | 54.36 | f | |||
1944 | 33.67 | a | 38.28 | 43.58 | 53.93 | 60.81 | 64.97 | 73.06 | 69.42 | 67.23 | 56.87 | 40.07 | 34.93 | a | 53.07 | |||||||||||
1945 | 35.90 | b | 38.71 | 42.48 | 47.53 | 61.68 | 63.27 | 74.84 | 73.19 | 62.70 | 55.97 | 37.67 | 33.68 | 52.30 | ||||||||||||
1946 | 34.58 | 37.32 | 43.48 | 52.43 | 64.90 | 62.73 | 71.81 | 73.29 | 64.17 | 48.74 | 37.67 | 35.61 | 52.23 | |||||||||||||
1947 | 32.10 | 41.46 | 51.26 | 56.83 | a | 65.26 | 62.57 | 69.16 | 68.97 | 65.67 | 53.23 | a | 40.67 | 35.97 | 53.59 | |||||||||||
1948 | 34.29 | 35.79 | 42.58 | 48.13 | 55.94 | 68.13 | 68.52 | 66.39 | 63.40 | 53.39 | 39.55 | a | 32.21 | c | 50.69 | |||||||||||
1949 | 28.50 | e | 34.62 | b | 43.13 | 52.57 | 64.39 | 65.37 | 68.65 | 70.23 | 67.40 | 49.45 | 47.24 | a | 35.20 | a | 52.23 | |||||||||
1950 | 26.68 | f | 34.50 | b | 39.71 | 47.90 | 57.58 | ----- | z | 72.42 | 73.29 | 68.73 | 50.87 | 41.50 | 39.42 | 52.59 | b | |||||||||
1951 | 33.42 | 36.68 | 40.71 | 58.07 | 59.61 | 68.87 | 74.13 | 73.23 | 71.03 | 52.35 | 41.10 | 33.13 | 53.53 | |||||||||||||
1952 | 30.77 | 37.72 | 42.16 | 55.10 | 63.42 | 62.10 | 75.39 | 72.32 | 71.20 | 62.84 | 39.70 | ----- | z | 55.70 | a | |||||||||||
1953 | 38.68 | 40.64 | 45.71 | 51.37 | 58.81 | 59.50 | 71.97 | 70.74 | 67.07 | 56.26 | 44.93 | 37.84 | 53.63 | |||||||||||||
1954 | 34.23 | 37.36 | 43.84 | 49.30 | 61.61 | 60.87 | 67.26 | 64.90 | 64.13 | 52.81 | 46.83 | 36.39 | 51.63 | |||||||||||||
1955 | 35.00 | 37.14 | 38.52 | 46.93 | 55.16 | 64.27 | 65.65 | 69.87 | 64.47 | 53.13 | 36.20 | 34.16 | 50.04 | |||||||||||||
1956 | 33.45 | 34.10 | 40.58 | 55.14 | a | 66.35 | 61.50 | 74.68 | 72.39 | 65.80 | 50.00 | 41.83 | 38.35 | 52.85 | ||||||||||||
1957 | 31.87 | 38.39 | 44.52 | 54.50 | 63.16 | 65.00 | 68.52 | 68.35 | 73.23 | 54.16 | 42.47 | 40.13 | 53.69 | |||||||||||||
1958 | 38.29 | 47.64 | 48.45 | 54.27 | 69.26 | 70.67 | 80.16 | 77.23 | 65.57 | 58.68 | 43.07 | 42.71 | 58.00 | |||||||||||||
1959 | 36.13 | a | 40.00 | 46.00 | 54.60 | 59.39 | 65.20 | 75.35 | 69.32 | 61.83 | 56.61 | 44.97 | 37.74 | 53.93 | ||||||||||||
1960 | 35.16 | 41.34 | 48.55 | 54.57 | 56.42 | 67.10 | 77.97 | 67.35 | 68.07 | 57.16 | 42.50 | 37.29 | 54.46 | |||||||||||||
1961 | 42.90 | 42.36 | 47.87 | 51.10 | 59.84 | 72.67 | 75.61 | 79.19 | 64.70 | 55.39 | 41.60 | 36.94 | 55.85 | |||||||||||||
1962 | 37.13 | 45.29 | 45.55 | 56.90 | 54.61 | 66.70 | 72.00 | 69.87 | 69.03 | 55.29 | 46.20 | 40.06 | 54.89 | |||||||||||||
1963 | 34.90 | 51.43 | 47.10 | 50.93 | 63.84 | 62.67 | 67.61 | 71.68 | 72.40 | 57.61 | 44.57 | 40.13 | 55.41 | |||||||||||||
1964 | 37.03 | 42.34 | 45.84 | 50.87 | 59.58 | 64.27 | 71.10 | 68.71 | 64.30 | 60.42 | 41.33 | 34.55 | 53.36 | |||||||||||||
1965 | 36.42 | 40.43 | 52.16 | 57.40 | 56.88 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.60 | h | ||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | 65.19 | 65.23 | 70.42 | 74.00 | b | 70.60 | 58.81 | 48.66 | a | 42.29 | 61.90 | d | ||||||
1967 | 40.00 | d | 46.07 | 44.97 | 51.43 | 62.10 | 73.13 | 75.97 | 84.77 | 75.83 | 58.71 | 49.60 | 39.32 | 58.49 | ||||||||||||
1968 | 39.61 | 52.90 | 51.94 | 53.37 | 62.77 | 66.63 | 77.13 | ----- | z | 67.92 | d | 57.10 | 47.07 | 35.48 | 55.63 | a | ||||||||||
1969 | 31.71 | 41.57 | 51.94 | 54.73 | 68.00 | 72.73 | ----- | z | 71.45 | 67.73 | 56.81 | 51.72 | a | 42.75 | g | 56.84 | b | |||||||||
1970 | 38.06 | 51.11 | a | 50.04 | c | 49.57 | 63.00 | d | 72.97 | 76.65 | 75.68 | 64.80 | 58.81 | 46.97 | a | 36.52 | b | 57.01 | ||||||||
1971 | 38.84 | 43.21 | 44.23 | 55.33 | 64.23 | 62.03 | 75.68 | c | 78.77 | 65.20 | 57.75 | c | 44.73 | 36.93 | c | 55.58 | ||||||||||
1972 | 36.26 | d | 44.62 | m | 49.52 | 50.97 | 66.84 | 66.79 | b | 73.86 | c | 76.71 | 63.37 | 59.70 | d | 48.07 | 32.54 | g | 59.21 | b | ||||||
1973 | 38.26 | 48.89 | 48.36 | c | 55.83 | 64.71 | 66.73 | 75.26 | 69.64 | c | 70.53 | 56.48 | 40.54 | f | 41.68 | 57.85 | a | |||||||||
1974 | 36.52 | 43.54 | 49.26 | d | 53.54 | b | 57.06 | 70.71 | i | 69.16 | f | 75.30 | d | 77.41 | a | 64.29 | 46.50 | 41.65 | 54.51 | b | ||||||
1975 | 36.84 | f | 42.11 | 44.35 | 50.05 | j | 62.32 | 64.53 | 73.21 | c | 68.79 | b | 75.28 | a | 54.04 | d | 43.60 | 42.30 | d | 57.05 | b | |||||
1976 | 43.06 | 43.03 | 45.80 | a | 55.11 | b | 63.90 | 64.44 | c | 70.50 | e | 67.45 | 69.67 | 60.72 | f | 53.68 | b | 43.52 | 56.38 | a | ||||||
1977 | 43.00 | 52.29 | 45.10 | a | 60.97 | 57.16 | 71.04 | c | 71.42 | 78.42 | 63.58 | d | 58.78 | h | 44.03 | 40.12 | f | 58.70 | b | |||||||
1978 | 42.35 | 46.89 | a | 51.90 | 54.12 | d | 59.87 | h | 71.73 | 74.17 | b | 72.55 | 62.77 | 63.26 | 44.52 | c | 35.74 | 56.36 | a | |||||||
1979 | 35.94 | 40.64 | c | 52.61 | 55.54 | d | 64.10 | 69.57 | 76.39 | 71.94 | 71.77 | 62.92 | g | 48.54 | d | 44.68 | 57.43 | a | ||||||||
1980 | 35.39 | 47.15 | c | 46.45 | 61.70 | 61.39 | 63.40 | 73.58 | 70.74 | 67.70 | 64.32 | f | 47.23 | 42.71 | 56.13 | a | ||||||||||
1981 | 49.93 | d | 49.06 | j | 52.42 | 54.70 | 59.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.11 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 36.89 | 42.20 | 46.59 | 53.79 | 61.78 | 66.11 | 73.06 | 72.41 | 67.53 | 56.09 | 44.22 | 38.22 | 54.15 | |||||||||||||
S.D. | 4.01 | 5.01 | 4.18 | 3.49 | 3.62 | 3.76 | 3.33 | 4.05 | 3.97 | 3.67 | 4.00 | 3.19 | 2.21 | |||||||||||||
SKEW | 0.74 | 0.43 | 0.14 | 0.04 | -0.14 | 0.44 | -0.13 | 0.73 | 0.60 | 0.12 | 0.09 | 0.15 | 0.21 | |||||||||||||
MAX | 49.93 | 52.90 | 56.23 | 61.70 | 69.26 | 73.13 | 80.16 | 84.77 | 77.41 | 64.29 | 53.68 | 44.68 | 58.49 | |||||||||||||
MIN | 28.50 | 34.10 | 38.52 | 46.93 | 54.61 | 59.50 | 65.65 | 64.90 | 60.90 | 48.74 | 36.20 | 32.21 | 50.04 | |||||||||||||
YRS | 39 | 40 | 41 | 39 | 40 | 38 | 39 | 40 | 40 | 35 | 38 | 37 | 24 |