YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | 43.31 | e | 38.46 | a | 44.68 | 56.97 | 62.81 | 61.77 | 75.13 | a | 71.03 | a | 68.07 | 54.23 | a | 52.50 | x | ----- | z | 57.65 | b | |||||
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.75 | s | 68.06 | 73.40 | 56.26 | 51.20 | 47.35 | 59.26 | g | |||||
1958 | 49.32 | 51.63 | a | 47.16 | 52.10 | 66.00 | 66.63 | 77.32 | 76.94 | 66.90 | 64.87 | 49.87 | 51.16 | 59.99 | ||||||||||||
1959 | 44.94 | 43.00 | 47.68 | 53.67 | 57.03 | 63.97 | 73.23 | 70.29 | 61.37 | 58.97 | 54.03 | 46.42 | 56.22 | |||||||||||||
1960 | 41.32 | 43.97 | 49.29 | 52.63 | 54.58 | 66.93 | 75.68 | 67.58 | 68.50 | 60.06 | 47.97 | 48.84 | 56.45 | |||||||||||||
1961 | 50.87 | 46.07 | 46.45 | 51.00 | 56.84 | 70.63 | 74.32 | 76.61 | 62.27 | 57.90 | 47.97 | 42.61 | 56.96 | |||||||||||||
1962 | 45.26 | 46.18 | 44.90 | 54.69 | a | 51.42 | 64.67 | 71.23 | a | 68.42 | 67.76 | a | 59.58 | 50.23 | 51.26 | 56.30 | ||||||||||
1963 | 41.74 | 54.11 | 46.90 | 47.66 | a | 60.66 | b | 59.76 | a | 64.35 | 69.74 | 71.27 | 57.97 | 48.77 | 49.81 | 56.06 | ||||||||||
1964 | 41.81 | 46.97 | 44.65 | 49.40 | 55.87 | 62.63 | 68.58 | 66.94 | 63.20 | 62.19 | 46.59 | a | 39.87 | 54.06 | ||||||||||||
1965 | 44.97 | 45.96 | 53.16 | 54.77 | 55.55 | 64.63 | 74.68 | 71.26 | 65.50 | 64.39 | 51.23 | 42.26 | 57.36 | |||||||||||||
1966 | 43.00 | 43.54 | 48.19 | 54.77 | 60.45 | 64.73 | 67.87 | 71.65 | 68.23 | 59.16 | 50.73 | 44.19 | 56.38 | |||||||||||||
1967 | 43.55 | 47.25 | 44.06 | 46.80 | 60.35 | 68.73 | 74.42 | 80.71 | 72.87 | 58.58 | 51.97 | 40.20 | a | 57.46 | ||||||||||||
1968 | 43.48 | 53.07 | 51.61 | 50.10 | 58.29 | 63.87 | 72.58 | 68.43 | c | 65.90 | 56.26 | 50.21 | b | 40.29 | 56.17 | |||||||||||
1969 | 35.82 | c | 42.00 | 50.74 | 52.87 | 63.61 | 65.60 | 67.87 | 68.94 | 65.50 | 55.48 | 52.31 | a | 45.81 | 55.55 | |||||||||||
1970 | 44.23 | 52.07 | 48.81 | 46.67 | 59.97 | 68.30 | 74.03 | 73.03 | 63.00 | 57.55 | 47.60 | 39.97 | 56.27 | |||||||||||||
1971 | 41.74 | 43.86 | 42.97 | 50.97 | 58.39 | 59.63 | 71.63 | a | 73.42 | 62.97 | 54.43 | a | 47.10 | 38.87 | 53.83 | |||||||||||
1972 | 38.63 | a | 45.59 | 50.77 | 47.13 | 60.73 | a | 64.10 | 75.74 | 75.77 | 63.93 | 58.03 | 48.53 | 39.39 | 55.70 | |||||||||||
1973 | 41.39 | 49.75 | 45.13 | 53.40 | 61.71 | 64.40 | 73.58 | 68.58 | 66.27 | 56.23 | 42.10 | 45.97 | 55.71 | |||||||||||||
1974 | 38.35 | 43.21 | 47.42 | 50.93 | 54.23 | 66.00 | 68.84 | 71.90 | 76.17 | 62.53 | a | 50.20 | 44.03 | 56.15 | ||||||||||||
1975 | 43.55 | 43.79 | 43.00 | 47.13 | 59.29 | 62.07 | 70.87 | 65.97 | 72.97 | 52.97 | 45.57 | 46.19 | 54.45 | |||||||||||||
1976 | 47.03 | 44.28 | 45.10 | 51.37 | 59.59 | b | 60.97 | 70.45 | 66.61 | 68.00 | 61.03 | 56.10 | 49.55 | 56.67 | ||||||||||||
1977 | 48.03 | 52.18 | 45.10 | 57.57 | 52.77 | 67.17 | 68.94 | 75.90 | 61.13 | 57.74 | 45.87 | 44.32 | 56.39 | |||||||||||||
1978 | 46.26 | 47.89 | 53.39 | 51.00 | 56.55 | 66.60 | 70.19 | 68.81 | 61.90 | 61.68 | c | 45.76 | a | 38.32 | 55.70 | |||||||||||
1979 | 38.65 | 41.32 | 51.77 | 51.07 | 61.13 | 66.54 | b | 73.83 | a | 69.42 | 69.97 | 60.61 | 49.97 | 49.16 | 56.95 | |||||||||||
1980 | 41.52 | 50.48 | 44.77 | 56.10 | 55.80 | a | 59.47 | 70.58 | 68.19 | 67.43 | 62.50 | a | 51.20 | 49.74 | 56.48 | |||||||||||
1981 | 51.13 | 48.89 | 50.26 | 53.00 | 56.23 | 62.03 | 70.42 | 77.48 | 68.76 | a | 57.71 | 50.80 | 44.13 | 57.57 | ||||||||||||
1982 | 40.03 | 43.36 | 47.10 | 49.73 | 59.94 | 66.40 | 69.41 | b | 72.10 | 65.33 | 58.16 | 46.79 | a | 43.71 | 55.17 | |||||||||||
1983 | 49.26 | 48.71 | 49.23 | 53.83 | 62.87 | 62.03 | 66.19 | 70.35 | 64.23 | 59.39 | 46.33 | 38.03 | 55.87 | |||||||||||||
1984 | 47.77 | 49.14 | 50.73 | a | 49.07 | 57.03 | 62.31 | a | 72.68 | 72.27 | a | 65.97 | 52.68 | 45.33 | 39.13 | 55.34 | ||||||||||
1985 | 47.00 | 42.22 | a | 45.97 | 55.47 | 58.48 | b | 67.87 | 78.29 | 72.03 | 62.03 | 55.61 | 38.43 | 48.06 | 55.96 | |||||||||||
1986 | 50.94 | 45.64 | 54.94 | 51.70 | 59.84 | 69.97 | 66.74 | 77.71 | 61.03 | 63.26 | 48.87 | 46.19 | 58.07 | |||||||||||||
1987 | 44.52 | 48.39 | 50.65 | 59.33 | 62.97 | a | 70.60 | 68.06 | 74.97 | 70.93 | 65.61 | c | 51.20 | e | 39.90 | 58.93 | ||||||||||
1988 | 42.97 | 51.41 | 49.23 | 54.47 | 57.87 | 64.43 | b | 73.45 | 74.81 | 71.33 | 64.35 | 45.72 | a | 44.55 | 57.88 | |||||||||||
1989 | 42.29 | 38.75 | 46.90 | 58.90 | 59.81 | 68.29 | b | 67.06 | 67.94 | 71.80 | 56.87 | 50.10 | 47.81 | 56.38 | ||||||||||||
1990 | 42.58 | 42.54 | 51.70 | a | 57.63 | 57.35 | 64.53 | 75.58 | 73.43 | a | 70.70 | 54.61 | 47.10 | 36.03 | a | 56.15 | ||||||||||
1991 | 44.06 | 54.21 | 45.87 | 50.07 | 53.48 | 60.23 | 74.94 | 73.55 | 74.43 | 62.71 | 48.70 | 45.94 | 57.35 | |||||||||||||
1992 | 48.39 | 53.72 | 56.50 | a | 56.80 | 69.29 | 71.23 | 73.97 | 76.31 | b | 68.27 | 59.32 | 48.17 | 38.67 | a | 60.05 | ||||||||||
1993 | 38.55 | 43.61 | 51.65 | 50.97 | 63.19 | 62.87 | 63.81 | 70.90 | 72.47 | 62.10 | 44.97 | 44.84 | 55.83 | |||||||||||||
1994 | 47.29 | 43.64 | 53.45 | 54.83 | 61.71 | 63.23 | 76.13 | 72.81 | 71.10 | 56.42 | 40.33 | 41.61 | 56.88 | |||||||||||||
1995 | 45.29 | 50.25 | 49.45 | 53.23 | 62.06 | 65.03 | 73.26 | 69.90 | 68.30 | 55.55 | 51.47 | 44.48 | 57.36 | |||||||||||||
1996 | 41.74 | 46.76 | 50.81 | 54.47 | 56.39 | 65.70 | 77.58 | 75.97 | 65.80 | 56.48 | 47.28 | a | 42.87 | 56.82 | ||||||||||||
1997 | 43.13 | 45.79 | 47.55 | 52.63 | 66.74 | 64.23 | 71.58 | 75.77 | 69.07 | 53.90 | 50.33 | 43.06 | 56.98 | |||||||||||||
1998 | 44.84 | 45.85 | a | 48.90 | 54.50 | 55.65 | 65.83 | 75.40 | a | 76.58 | 71.80 | 55.77 | a | 46.00 | 40.29 | 56.78 | ||||||||||
1999 | 43.35 | 42.50 | 45.26 | 53.60 | 56.73 | a | 62.97 | 72.58 | 73.06 | 73.28 | a | 60.81 | 51.53 | 44.26 | 56.66 | |||||||||||
2000 | 39.81 | 45.52 | 48.39 | 58.30 | 57.90 | 70.07 | 72.00 | a | 73.13 | 67.70 | 56.32 | 43.67 | 44.71 | 56.46 | ||||||||||||
2001 | 45.84 | 45.25 | 50.13 | a | 51.30 | 65.81 | 63.97 | 71.35 | 74.10 | 72.04 | b | 57.35 | ----- | z | ----- | z | 59.71 | b | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 43.99 | 46.51 | 48.50 | 52.77 | 59.22 | 64.97 | 71.92 | 72.16 | 67.84 | 58.61 | 48.32 | 43.95 | 56.55 | |||||||||||||
S.D. | 3.58 | 3.99 | 3.24 | 3.28 | 3.82 | 3.05 | 3.49 | 3.50 | 3.99 | 3.32 | 3.41 | 3.91 | 1.25 | |||||||||||||
SKEW | 0.11 | 0.25 | 0.32 | 0.02 | 0.39 | 0.20 | -0.38 | 0.22 | -0.01 | 0.31 | -0.59 | 0.03 | 0.66 | |||||||||||||
MAX | 51.13 | 54.21 | 56.50 | 59.33 | 69.29 | 71.23 | 78.29 | 80.71 | 76.17 | 65.61 | 56.10 | 51.26 | 60.05 | |||||||||||||
MIN | 35.82 | 38.46 | 42.97 | 46.67 | 51.42 | 59.47 | 63.81 | 65.97 | 61.03 | 52.68 | 38.43 | 36.03 | 53.83 | |||||||||||||
YRS | 45 | 45 | 45 | 45 | 45 | 45 | 45 | 46 | 46 | 46 | 44 | 44 | 43 |