YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | 45.45 | 54.13 | 63.03 | a | 69.45 | 76.93 | a | 87.56 | 81.73 | 75.98 | 61.73 | 48.15 | 40.90 | 64.10 | a | |||||||||
1952 | 40.32 | 46.07 | 50.34 | 62.87 | 72.40 | 76.55 | 84.63 | 87.12 | a | 77.52 | 66.85 | 48.36 | b | 43.27 | 63.02 | |||||||||||
1953 | 48.24 | 46.59 | 54.32 | 62.25 | 65.11 | 77.65 | 88.87 | 83.85 | 77.12 | 62.85 | 52.48 | 42.17 | a | 63.46 | ||||||||||||
1954 | 43.45 | a | 52.62 | 51.42 | 66.47 | 75.42 | a | 78.50 | 88.69 | 83.23 | 77.97 | 65.17 | b | 55.43 | 42.33 | a | 65.06 | |||||||||
1955 | 40.97 | b | 43.86 | 53.25 | a | 60.00 | 69.60 | a | 79.30 | b | 85.08 | 86.26 | 78.08 | 66.82 | 51.50 | 46.74 | 63.46 | |||||||||
1956 | 47.29 | 43.90 | 54.32 | a | 62.10 | 72.77 | 81.00 | 86.26 | 82.03 | 79.77 | 63.16 | b | 47.82 | 43.53 | 63.66 | |||||||||||
1957 | 42.39 | 53.82 | 56.11 | 62.43 | 68.27 | 83.69 | a | 86.02 | 84.25 | a | 76.60 | a | 62.35 | a | 48.13 | 44.68 | a | 64.06 | ||||||||
1958 | 44.31 | 51.34 | 51.68 | 61.65 | 75.07 | a | 82.02 | 84.68 | a | 88.61 | 79.07 | a | 67.84 | 51.92 | 46.73 | 65.41 | ||||||||||
1959 | 44.95 | 47.11 | 56.03 | 66.25 | 70.93 | i | 86.33 | i | 90.97 | 84.00 | 74.97 | 64.98 | 50.64 | a | 45.43 | a | 62.53 | b | ||||||||
1960 | 40.37 | 44.72 | 58.32 | 65.95 | 71.29 | 84.62 | 87.95 | 85.24 | 78.55 | 63.95 | 51.60 | 43.62 | b | 64.68 | ||||||||||||
1961 | 42.70 | a | 49.50 | 54.40 | 63.60 | 70.90 | 84.77 | 89.31 | 86.47 | 72.53 | 62.35 | 48.47 | a | 40.94 | 63.83 | |||||||||||
1962 | 43.38 | a | 48.45 | 49.66 | 67.81 | a | 68.50 | 78.37 | 84.90 | 85.61 | 77.23 | 66.13 | 53.79 | a | 43.15 | 63.92 | ||||||||||
1963 | 39.24 | 54.34 | 52.07 | a | 57.47 | 72.97 | 75.93 | c | 83.27 | a | 85.03 | a | 78.17 | 67.50 | 53.50 | a | 41.61 | 63.42 | ||||||||
1964 | 39.14 | b | 43.75 | e | 50.65 | a | 60.93 | 69.11 | 78.43 | b | 86.93 | a | 85.62 | a | 75.48 | a | 69.08 | a | 48.02 | b | 44.28 | b | 62.62 | |||
1965 | 45.68 | a | 48.02 | c | 51.35 | d | 60.36 | a | 69.71 | c | 75.66 | b | 84.55 | 83.81 | 70.93 | 66.52 | b | 54.73 | b | 44.52 | d | 62.99 | ||||
1966 | 42.00 | b | 45.02 | b | 56.08 | a | 64.89 | c | 74.66 | 80.98 | 86.23 | 86.47 | 77.53 | 64.67 | a | 53.55 | 45.15 | 64.77 | ||||||||
1967 | 44.02 | 49.55 | 57.44 | 55.90 | 70.60 | 76.53 | 89.44 | 88.15 | 78.60 | 67.10 | 55.63 | 41.89 | 64.57 | |||||||||||||
1968 | 42.90 | 54.48 | 56.48 | 61.35 | 71.18 | 80.87 | 86.84 | 80.95 | 77.03 | 64.65 | 53.16 | b | 39.56 | 64.12 | ||||||||||||
1969 | 47.05 | 46.39 | 52.33 | b | 63.95 | a | 74.17 | a | 79.20 | 86.39 | 88.58 | 79.55 | 61.73 | 52.13 | 45.13 | 64.72 | ||||||||||
1970 | 42.85 | 51.98 | 55.34 | 58.55 | 73.25 | a | 81.30 | 88.32 | 86.92 | 73.68 | 61.61 | 52.98 | 43.21 | 64.17 | ||||||||||||
1971 | 43.26 | 48.62 | 54.50 | 62.80 | 66.58 | 79.63 | 89.02 | 88.29 | 74.98 | 61.08 | 50.64 | b | 41.68 | 63.42 | ||||||||||||
1972 | 41.85 | a | 50.29 | 62.93 | b | 64.70 | 73.38 | b | 81.52 | 86.45 | 84.17 | a | 75.65 | 62.08 | 49.33 | a | 40.76 | 64.43 | ||||||||
1973 | 40.27 | 49.46 | 51.45 | 63.20 | 75.24 | 81.50 | a | 87.95 | 84.66 | 75.23 | 65.15 | 51.90 | 45.44 | 64.29 | ||||||||||||
1974 | 40.81 | 48.23 | 58.71 | 62.45 | 74.92 | 84.43 | a | 87.18 | 84.39 | 80.50 | 66.97 | 52.47 | 42.20 | a | 65.27 | |||||||||||
1975 | 43.11 | 46.80 | 53.08 | 58.12 | a | 71.31 | 81.80 | 87.23 | 84.19 | 79.67 | 65.18 | 52.03 | 47.53 | 64.17 | ||||||||||||
1976 | 46.34 | 52.57 | a | 54.03 | 61.53 | 74.88 | a | 81.27 | 88.40 | 83.03 | 77.22 | 64.39 | 55.36 | a | 42.63 | 65.14 | ||||||||||
1977 | 43.65 | a | 53.05 | 52.31 | 66.87 | 66.94 | 84.20 | 89.31 | 87.05 | 78.40 | 68.29 | 54.72 | 49.63 | 66.20 | ||||||||||||
1978 | 47.16 | 51.21 | 58.72 | a | 62.27 | 71.50 | 83.88 | 88.18 | 85.87 | 76.63 | 69.58 | 52.00 | a | 40.28 | a | 65.61 | ||||||||||
1979 | 39.90 | 47.07 | 55.02 | 64.00 | a | 73.71 | 81.62 | 87.15 | 82.92 | a | 81.50 | a | 69.16 | 50.65 | 45.90 | 64.88 | ||||||||||
1980 | 48.63 | a | 53.00 | a | 54.55 | 63.30 | 69.08 | 80.95 | 88.74 | 87.31 | 78.43 | 65.88 | a | 53.72 | a | 50.27 | 66.16 | |||||||||
1981 | 49.21 | 50.70 | 56.08 | a | 69.53 | a | 73.87 | 86.98 | 91.02 | 87.84 | 79.70 | 63.27 | 56.42 | 47.45 | 67.67 | |||||||||||
1982 | 45.63 | a | 50.64 | 55.34 | b | 63.79 | b | 73.57 | a | 80.07 | 86.37 | 86.58 | a | 77.78 | a | 60.98 | 50.31 | a | 43.94 | 64.58 | ||||||
1983 | 45.63 | a | 52.29 | 57.40 | a | 58.93 | a | 72.13 | a | 79.35 | c | 88.09 | b | 83.88 | a | 81.88 | a | 67.90 | 57.41 | c | 46.91 | h | 67.72 | a | ||
1984 | 46.67 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.67 | k |
1985 | ----- | z | 46.75 | 55.66 | 68.18 | 76.06 | 85.18 | 90.32 | 86.56 | 75.22 | j | 65.15 | a | 50.46 | b | 46.23 | a | 67.06 | b | |||||||
1986 | 49.60 | 53.59 | 62.05 | 65.62 | b | 75.04 | c | 86.20 | 85.98 | 89.42 | 74.00 | 63.22 | a | 54.83 | d | 44.57 | a | 67.01 | ||||||||
1987 | 43.05 | 50.14 | 53.87 | 66.98 | 74.17 | d | 84.48 | 84.84 | f | 86.58 | 78.48 | 69.13 | a | 53.81 | f | 41.26 | f | 67.43 | c | |||||||
1988 | 43.45 | j | 49.42 | i | 56.34 | b | 62.60 | f | 72.31 | d | 83.38 | a | ----- | z | 85.22 | b | 76.50 | c | 71.81 | g | 56.42 | j | 45.27 | g | 74.75 | g |
1989 | 41.82 | l | 46.62 | k | 60.96 | e | 70.44 | f | 74.42 | e | 82.74 | c | 90.41 | d | 84.70 | d | 77.41 | h | 65.28 | h | ----- | z | ----- | z | 78.65 | g |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.89 | 49.21 | 54.97 | 63.06 | 71.99 | 81.12 | 87.46 | 85.44 | 77.30 | 65.12 | 52.12 | 44.04 | 64.54 | |||||||||||||
S.D. | 2.92 | 3.23 | 3.12 | 3.12 | 2.78 | 2.99 | 1.92 | 2.04 | 2.36 | 2.55 | 2.59 | 2.58 | 1.16 | |||||||||||||
SKEW | 0.24 | -0.06 | 0.61 | -0.13 | -0.62 | -0.05 | -0.07 | -0.11 | -0.50 | 0.05 | -0.01 | 0.48 | 0.79 | |||||||||||||
MAX | 49.60 | 54.48 | 62.93 | 69.53 | 76.06 | 86.98 | 91.02 | 89.42 | 81.88 | 69.58 | 57.41 | 50.27 | 67.67 | |||||||||||||
MIN | 39.14 | 43.75 | 49.66 | 55.90 | 65.11 | 75.66 | 83.27 | 80.95 | 70.93 | 60.98 | 47.82 | 39.56 | 62.62 | |||||||||||||
YRS | 35 | 36 | 38 | 36 | 37 | 37 | 36 | 38 | 36 | 36 | 35 | 34 | 31 |