YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.33 | 28.26 | 34.30 | j | ||
1961 | 33.58 | 42.96 | 44.95 | a | 48.92 | 57.50 | 71.07 | 75.03 | 77.39 | 58.98 | 48.35 | 32.40 | 31.27 | 51.87 | ||||||||||||
1962 | 28.50 | 36.09 | 40.61 | 52.33 | 52.08 | m | 64.32 | 71.63 | d | 69.00 | b | 63.72 | 50.37 | a | 42.67 | 35.92 | a | 50.47 | a | |||||||
1963 | 24.72 | a | 37.50 | 44.44 | 48.33 | a | 57.71 | 63.86 | a | 67.88 | a | 70.29 | e | 67.82 | 54.36 | b | 41.86 | b | 30.22 | a | 50.75 | |||||
1964 | 34.23 | 36.83 | c | 41.59 | d | 46.83 | a | 55.02 | 62.12 | d | 70.50 | v | 66.50 | e | 60.58 | 51.77 | 37.37 | 26.02 | 47.17 | a | ||||||
1965 | 30.76 | 39.12 | 41.15 | 53.03 | 57.02 | b | 65.86 | a | 73.69 | 72.03 | 59.96 | b | 56.36 | c | 43.07 | 33.18 | 52.10 | |||||||||
1966 | 33.25 | c | 38.98 | c | 44.16 | 50.90 | 61.02 | 64.12 | 70.58 | 71.32 | 65.92 | 50.29 | 42.15 | 37.77 | 52.54 | |||||||||||
1967 | 38.94 | 41.61 | 42.56 | 46.16 | a | 57.86 | b | 69.18 | 74.26 | 76.55 | b | 69.95 | j | 52.82 | 39.55 | 31.97 | 51.95 | a | ||||||||
1968 | 34.98 | 42.41 | a | 47.00 | 48.70 | 59.26 | 66.77 | 75.31 | 67.52 | c | 63.65 | d | 49.39 | 40.41 | c | 30.74 | d | 52.18 | ||||||||
1969 | 17.82 | 29.91 | 44.34 | 50.92 | 61.98 | 74.62 | q | 74.07 | p | 69.40 | a | 64.96 | g | 48.89 | 40.48 | 33.79 | 44.17 | c | ||||||||
1970 | 31.32 | 39.98 | 43.29 | 47.40 | a | 59.03 | 71.35 | 76.24 | b | 71.95 | 59.30 | b | 49.23 | 39.58 | 32.48 | 51.76 | ||||||||||
1971 | 36.23 | 38.29 | 40.05 | 49.60 | 61.02 | 62.33 | 74.84 | c | 75.92 | 59.13 | c | 45.33 | m | 40.68 | 30.40 | a | 51.68 | a | ||||||||
1972 | 31.02 | d | 36.57 | b | 46.03 | b | 47.65 | 61.56 | 67.69 | d | 72.29 | 73.77 | a | 59.30 | 50.95 | j | 39.64 | e | 26.79 | 51.12 | a | |||||
1973 | 30.52 | 37.64 | 45.66 | b | 51.27 | 60.13 | d | 66.08 | 73.29 | b | 70.45 | 64.38 | b | 51.91 | c | 39.05 | h | 37.59 | d | 53.54 | a | |||||
1974 | 27.19 | 41.12 | 44.55 | 51.32 | 55.50 | c | 69.13 | d | 70.94 | 71.44 | 65.31 | d | 51.59 | b | 42.00 | d | 37.60 | 52.31 | ||||||||
1975 | 29.81 | o | 34.18 | 41.53 | b | 46.86 | b | 58.22 | a | 65.10 | d | 75.66 | b | 67.18 | c | 64.15 | 53.30 | c | 39.82 | 33.98 | a | 52.72 | a | |||
1976 | 35.11 | d | 38.19 | b | 41.31 | 50.18 | 58.40 | 62.30 | c | 70.29 | b | 67.79 | g | 66.22 | c | 51.46 | c | 40.50 | c | 31.76 | f | 51.40 | b | |||
1977 | 23.02 | e | 39.88 | 43.54 | g | 55.20 | 55.95 | a | 68.84 | e | 71.75 | e | 73.75 | e | 58.35 | f | 51.61 | i | 38.67 | 34.56 | 51.29 | c | ||||
1978 | 31.10 | e | 38.25 | n | 44.65 | h | 50.78 | a | 55.62 | g | 68.26 | k | 71.97 | k | 70.02 | g | 59.88 | i | 47.83 | j | 32.15 | 28.82 | 35.71 | h | ||
1979 | 14.45 | a | 35.34 | 45.89 | h | 50.40 | d | 60.11 | d | 67.96 | f | 73.23 | 72.08 | g | 65.56 | c | 54.66 | 34.95 | 36.65 | a | 47.26 | c | ||||
1980 | 23.53 | 35.80 | a | 43.19 | 52.88 | j | 59.53 | 62.40 | f | 72.42 | e | 70.88 | o | 63.65 | f | 50.83 | a | 40.81 | d | 36.07 | a | 45.27 | d | |||
1981 | 37.19 | 38.11 | 46.90 | k | 52.50 | g | 57.58 | 62.45 | h | 69.42 | e | 74.40 | e | 63.30 | g | 51.17 | h | 41.97 | a | 32.73 | a | 50.20 | e | |||
1982 | 28.52 | a | 37.85 | b | 43.27 | g | 46.52 | c | 57.34 | f | 66.66 | k | 72.38 | n | 70.41 | n | 60.33 | i | 50.14 | c | 35.93 | c | ----- | z | 39.79 | g |
1983 | 38.43 | a | 42.96 | c | 47.66 | 47.50 | h | 60.94 | g | 63.13 | g | 69.79 | q | 72.93 | j | 58.65 | j | 52.03 | b | 44.07 | 21.69 | b | 41.14 | f | ||
1984 | 31.40 | a | 38.90 | 46.58 | 49.20 | c | 54.26 | d | 62.90 | i | 74.09 | h | 73.04 | g | 60.79 | d | 50.02 | f | 41.15 | m | 24.89 | c | 43.72 | e | ||
1985 | 25.00 | a | 29.70 | a | 43.54 | f | 53.25 | f | 57.27 | k | 66.46 | f | 76.83 | e | 69.05 | k | 57.90 | d | 51.30 | i | 24.91 | a | 19.22 | a | 38.93 | f |
1986 | 31.53 | 37.84 | 47.79 | 49.95 | a | 60.33 | b | 69.94 | f | 67.23 | p | 75.24 | j | 60.15 | d | 52.53 | 41.03 | 30.74 | 45.77 | c | ||||||
1987 | 27.72 | b | 38.96 | 46.77 | 54.32 | h | 63.17 | d | 66.67 | d | 71.52 | h | 71.96 | h | 65.82 | 51.71 | g | 42.32 | 30.85 | 47.79 | d | |||||
1988 | 31.00 | a | 39.26 | 44.10 | 54.00 | b | 59.02 | a | 62.96 | g | 72.93 | i | 70.40 | f | 59.87 | d | 57.15 | g | 43.12 | 30.68 | 45.13 | d | ||||
1989 | 35.06 | e | 25.18 | 42.37 | a | 54.58 | 57.37 | e | 67.02 | h | 71.08 | g | 69.34 | i | 63.19 | i | 50.68 | 43.85 | d | 31.84 | 42.61 | d | ||||
1990 | 38.36 | b | 39.27 | h | 45.27 | 54.17 | g | 59.00 | k | 65.03 | 74.69 | 74.21 | j | 67.02 | d | 49.67 | d | 43.73 | 24.76 | 51.07 | d | |||||
1991 | 26.93 | a | 42.70 | 41.95 | c | 50.23 | d | 57.02 | e | 61.27 | 71.10 | f | 71.94 | g | 65.08 | 47.33 | j | 39.43 | 36.19 | e | 46.76 | c | ||||
1992 | 36.95 | 41.43 | 48.34 | 53.17 | a | 61.80 | a | 70.03 | 71.81 | e | 70.38 | g | 60.30 | 52.14 | f | 39.17 | 29.06 | 51.21 | b | |||||||
1993 | 21.00 | 28.00 | 39.41 | c | 49.72 | c | 63.82 | 64.20 | b | 65.55 | b | 67.69 | g | 62.35 | c | 52.97 | 32.73 | 34.16 | 46.72 | a | ||||||
1994 | 38.10 | 35.15 | a | 45.76 | b | 54.07 | c | 60.58 | 63.20 | h | 73.98 | e | 71.00 | h | 65.54 | d | 50.50 | 38.63 | c | 34.15 | 49.65 | b | ||||
1995 | 33.20 | d | 41.45 | 44.11 | 49.62 | a | 59.52 | a | 64.93 | a | 71.74 | d | 66.63 | h | 64.13 | d | 49.24 | d | 42.20 | 31.53 | b | 50.15 | a | |||
1996 | 29.75 | a | 31.53 | 42.73 | a | 52.19 | a | 54.63 | 63.33 | 73.07 | b | 71.98 | j | 59.65 | c | 50.05 | 37.26 | a | 29.17 | b | 47.58 | a | ||||
1997 | 31.12 | a | 37.32 | 44.92 | 48.82 | 60.66 | 62.57 | c | 70.15 | 72.60 | e | 63.95 | 50.23 | a | 40.50 | 32.63 | 51.29 | |||||||||
1998 | 35.03 | 41.27 | 45.35 | 50.37 | 58.86 | c | 65.67 | 77.02 | d | 74.46 | h | 66.82 | b | 49.78 | a | 43.43 | b | 32.40 | 51.45 | a | ||||||
1999 | 38.06 | 40.78 | a | 45.21 | c | 48.20 | 55.11 | 63.94 | c | 70.21 | c | 72.80 | h | 60.72 | 49.77 | 44.68 | 37.20 | a | 50.35 | a | ||||||
2000 | 33.63 | 38.64 | 43.32 | 53.77 | 58.15 | 65.52 | a | 70.68 | 69.66 | i | 60.58 | 50.02 | d | 32.80 | 27.89 | 48.63 | a | |||||||||
2001 | 31.23 | 34.81 | b | 44.84 | 48.91 | b | 60.00 | 62.83 | 70.98 | 72.57 | c | 65.13 | c | 50.45 | 42.54 | c | 35.06 | 51.61 | ||||||||
2002 | 36.53 | 37.41 | 40.65 | 50.62 | 55.96 | c | 67.03 | a | 74.13 | a | 69.73 | c | 61.98 | b | 47.48 | b | 39.87 | 37.92 | a | 51.61 | ||||||
2003 | 37.26 | 38.52 | 47.37 | 50.64 | b | 58.08 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.37 | g | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.27 | 37.56 | 44.08 | 50.31 | 58.72 | 65.63 | 72.57 | 71.69 | 62.78 | 51.00 | 39.59 | 31.68 | 51.80 | |||||||||||||
S.D. | 5.71 | 4.05 | 2.34 | 2.35 | 2.38 | 2.77 | 2.63 | 3.05 | 2.88 | 1.95 | 4.02 | 4.38 | 0.53 | |||||||||||||
SKEW | -0.94 | -1.18 | -0.12 | 0.25 | 0.02 | 0.50 | -0.43 | 0.13 | 0.02 | 0.80 | -1.59 | -0.75 | -0.57 | |||||||||||||
MAX | 38.94 | 42.96 | 48.34 | 55.20 | 63.82 | 71.35 | 77.02 | 77.39 | 67.82 | 56.36 | 44.68 | 37.92 | 52.54 | |||||||||||||
MIN | 14.45 | 25.18 | 39.41 | 46.16 | 54.26 | 61.27 | 65.55 | 66.50 | 57.90 | 47.48 | 24.91 | 19.22 | 50.75 | |||||||||||||
YRS | 42 | 41 | 37 | 37 | 37 | 29 | 31 | 20 | 33 | 31 | 41 | 41 | 10 |