YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.88 | s | ----- | z |
1962 | 25.87 | 33.64 | 36.73 | 48.72 | 49.24 | 58.43 | 64.16 | 62.58 | a | 59.03 | 47.16 | 39.35 | 33.31 | 46.52 | ||||||||||||
1963 | 25.50 | 41.20 | 39.25 | a | 42.37 | 54.27 | 57.62 | 61.40 | 63.40 | 61.74 | a | 49.58 | 38.72 | 30.08 | 47.09 | |||||||||||
1964 | 29.26 | 32.34 | 35.50 | 41.35 | 49.07 | a | 57.37 | 65.60 | 62.21 | b | 54.19 | f | 49.67 | b | 34.45 | a | 32.03 | 44.44 | a | |||||||
1965 | 30.15 | 36.79 | 37.37 | a | 46.45 | a | 49.84 | 58.63 | 64.52 | 62.50 | 50.40 | 50.00 | a | 38.72 | 27.55 | 46.07 | ||||||||||
1966 | 28.03 | 30.46 | 39.37 | 45.03 | 54.68 | 57.66 | a | 64.11 | 64.31 | 58.90 | 47.50 | 42.57 | 33.21 | b | 47.15 | |||||||||||
1967 | 33.18 | a | 36.96 | 36.66 | 36.70 | 51.95 | 59.05 | a | 66.92 | a | 66.87 | 59.37 | 45.83 | b | 38.15 | 26.40 | 46.50 | |||||||||
1968 | 29.98 | a | 39.47 | 40.02 | 42.07 | 50.84 | 59.83 | 67.26 | 61.42 | 56.48 | 46.62 | a | 38.38 | 29.88 | a | 46.85 | ||||||||||
1969 | 27.02 | 29.62 | 36.98 | 44.90 | 53.69 | 60.50 | 63.59 | b | 62.23 | a | 57.29 | a | 42.27 | 37.60 | 32.89 | 45.72 | ||||||||||
1970 | 32.97 | a | 37.93 | 37.50 | a | 37.93 | 52.26 | 61.55 | 66.34 | 65.11 | 52.10 | 44.94 | 38.87 | 26.83 | a | 46.19 | ||||||||||
1971 | 30.66 | 33.75 | 36.10 | 43.12 | 53.29 | 55.76 | a | 65.31 | 69.15 | 52.75 | 43.87 | 37.05 | 26.30 | a | 45.59 | |||||||||||
1972 | 24.37 | 33.81 | 42.97 | 42.00 | 53.11 | 60.12 | a | 65.92 | 66.28 | a | 51.09 | a | 45.26 | 36.80 | 20.97 | 45.22 | ||||||||||
1973 | 27.84 | 35.93 | 38.27 | 43.32 | 53.06 | 59.83 | 66.71 | 64.21 | 57.21 | a | 46.05 | a | 36.28 | 34.67 | a | 46.95 | ||||||||||
1974 | 26.65 | a | 35.23 | 38.90 | a | 43.00 | a | 49.81 | 62.80 | 65.33 | a | 63.48 | 57.38 | 45.95 | 38.32 | 30.00 | 46.40 | |||||||||
1975 | 27.79 | 32.70 | a | 36.06 | 39.00 | 50.37 | 57.68 | 68.76 | 60.97 | 56.98 | 47.37 | 35.28 | a | 31.57 | a | 45.38 | ||||||||||
1976 | 28.48 | 31.55 | 36.00 | 42.58 | 52.29 | c | 55.27 | 66.05 | 61.31 | 58.35 | 45.84 | 40.40 | 27.87 | 45.50 | ||||||||||||
1977 | 20.32 | 36.74 | a | 35.69 | 46.20 | 46.58 | 63.03 | 64.85 | 67.05 | 54.93 | 47.31 | 36.09 | b | 32.87 | a | 45.97 | ||||||||||
1978 | 33.56 | 36.91 | 43.03 | 42.98 | 48.28 | a | 57.52 | 64.65 | a | 61.37 | 53.50 | 47.24 | 29.22 | 22.19 | 45.04 | |||||||||||
1979 | 14.31 | 31.86 | 40.26 | 43.83 | 52.34 | 59.75 | 66.24 | 65.42 | 60.17 | 50.80 | a | 33.32 | 33.85 | 46.01 | ||||||||||||
1980 | 28.56 | 38.34 | 38.27 | 47.03 | 52.00 | a | 56.37 | 66.52 | 60.66 | 57.85 | 47.53 | 38.57 | a | 34.02 | a | 47.14 | ||||||||||
1981 | 35.10 | 33.91 | 39.98 | 45.28 | 51.65 | 58.17 | 63.13 | a | 67.08 | 57.47 | 45.32 | 39.13 | 33.05 | 47.44 | ||||||||||||
1982 | 23.43 | a | 30.58 | b | 37.73 | 40.80 | b | 49.42 | a | 61.00 | b | 63.50 | 64.61 | 53.98 | b | 45.67 | a | 32.72 | 28.82 | 44.35 | ||||||
1983 | 33.11 | c | 37.86 | 41.35 | a | 40.69 | a | 51.65 | 57.02 | 62.31 | b | 65.63 | 53.40 | a | 47.39 | 38.03 | a | 21.79 | 45.85 | |||||||
1984 | 20.18 | 28.97 | 39.40 | 41.50 | 49.58 | a | 54.67 | 66.61 | 64.61 | 54.43 | c | 42.23 | a | 35.58 | 21.79 | b | 43.30 | |||||||||
1985 | 18.97 | a | 24.59 | 33.45 | 46.30 | b | 52.19 | 59.67 | a | 68.92 | a | 61.50 | c | 51.70 | c | 44.10 | a | 22.93 | a | 15.25 | c | 41.63 | ||||
1986 | 30.45 | c | 34.66 | 41.98 | a | 40.77 | b | 51.00 | a | 61.86 | a | 60.64 | b | 67.27 | 49.84 | b | 46.39 | 37.29 | b | 28.16 | 45.86 | |||||
1987 | 23.02 | a | 34.71 | 39.19 | 48.67 | a | 52.52 | a | 60.79 | b | 62.53 | 60.87 | a | 57.78 | 47.29 | 35.54 | b | 29.80 | a | 46.06 | ||||||
1988 | 26.52 | b | 35.62 | 39.29 | 46.98 | a | 49.70 | a | 58.79 | a | 65.95 | 62.55 | 55.00 | b | 51.66 | 35.17 | 26.28 | b | 46.13 | |||||||
1989 | 24.29 | b | 20.24 | a | 38.34 | b | 47.53 | 49.12 | a | 58.43 | a | 64.84 | 61.50 | 55.08 | 45.43 | a | 36.16 | b | 29.81 | b | 44.23 | |||||
1990 | 31.93 | d | 31.15 | d | 39.27 | c | 46.75 | b | 48.20 | a | 58.04 | c | 67.27 | a | 65.06 | 59.41 | b | 46.57 | a | 37.34 | b | 23.63 | d | 46.22 | ||
1991 | 27.60 | a | 38.96 | 36.87 | a | 41.03 | 47.60 | b | 54.19 | a | 65.30 | a | 65.89 | 58.55 | a | 42.87 | 35.79 | a | 30.71 | b | 45.45 | |||||
1992 | 31.18 | a | 38.25 | a | 40.88 | b | 44.73 | f | 49.98 | d | 59.48 | a | 63.48 | d | 65.22 | a | 57.05 | 48.40 | b | 33.70 | c | 24.41 | c | 46.55 | a | |
1993 | 17.29 | c | 20.66 | 37.53 | a | 43.95 | b | 56.33 | d | 56.54 | d | 56.90 | 60.27 | 55.53 | 47.64 | b | 27.73 | b | 31.71 | c | 42.67 | |||||
1994 | 34.09 | b | 31.54 | a | 40.50 | b | 47.73 | 53.00 | c | 58.53 | 68.32 | a | 64.57 | d | 58.43 | 44.32 | 31.20 | b | 28.36 | x | 48.38 | a | ||||
1995 | 35.21 | e | 40.08 | d | 39.38 | b | 43.26 | c | 50.98 | b | 55.83 | g | 64.37 | e | 60.24 | 57.34 | a | 44.55 | b | 40.50 | c | 32.98 | f | 47.59 | b | |
1996 | 31.00 | b | 34.30 | b | 40.71 | b | 43.48 | d | 47.91 | b | 58.79 | d | 67.94 | o | 64.77 | a | 53.28 | 44.89 | c | 37.88 | a | 30.33 | e | 44.30 | a | |
1997 | 31.78 | d | 34.46 | d | 40.66 | b | 42.53 | a | 55.07 | a | 55.86 | b | 62.26 | d | 63.48 | a | 57.04 | e | 44.65 | a | 39.30 | j | 26.77 | k | 48.78 | b |
1998 | 34.65 | d | 35.68 | c | 39.08 | a | 43.63 | c | 48.65 | d | 55.35 | d | 67.29 | b | 64.41 | b | 59.48 | c | 44.85 | 38.91 | a | 27.76 | b | 46.65 | ||
1999 | 33.16 | 31.70 | 37.67 | b | 41.60 | a | 48.23 | c | 57.00 | a | 63.68 | a | 64.52 | 55.00 | a | 48.02 | d | ----- | z | 33.55 | k | 48.06 | b | |||
2000 | 32.34 | f | 37.30 | b | 38.79 | c | 47.80 | c | 52.35 | d | 60.12 | 65.59 | c | 63.40 | a | 55.23 | d | 45.62 | b | 30.98 | e | 29.94 | g | 49.72 | b | |
2001 | 28.94 | e | 33.33 | b | 41.08 | f | 42.33 | d | 54.79 | b | 56.88 | b | 65.41 | d | 66.95 | c | 57.63 | d | 46.89 | c | 37.74 | e | 29.78 | b | 47.33 | a |
2002 | 30.38 | b | 32.48 | g | 36.60 | g | 44.80 | c | 49.74 | b | 62.46 | d | 68.12 | k | 59.93 | d | 55.22 | g | 41.09 | d | 36.52 | d | 31.52 | d | 44.55 | d |
2003 | ----- | z | 32.93 | e | 40.06 | f | 39.04 | d | 51.31 | e | 60.52 | b | 69.92 | a | 65.40 | b | 58.38 | b | 50.43 | d | 33.64 | b | 32.70 | d | 49.43 | b |
2004 | 30.02 | d | 33.13 | c | 43.80 | d | 46.19 | a | 51.37 | 59.79 | a | 66.58 | f | 65.84 | b | 54.39 | b | 48.35 | d | 36.56 | f | 33.29 | e | 46.62 | b | |
2005 | 28.79 | e | 33.80 | e | 40.24 | d | 44.88 | b | 53.83 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.31 | g |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.23 | 33.81 | 38.81 | 43.63 | 51.21 | 58.64 | 65.06 | 63.86 | 56.12 | 46.41 | 36.07 | 28.87 | 45.71 | |||||||||||||
S.D. | 4.92 | 4.43 | 2.22 | 2.89 | 2.26 | 2.19 | 2.44 | 2.28 | 2.83 | 2.32 | 3.73 | 4.41 | 1.32 | |||||||||||||
SKEW | -0.89 | -1.22 | 0.08 | -0.19 | 0.11 | 0.03 | -0.80 | 0.07 | -0.41 | 0.07 | -1.42 | -1.04 | -1.43 | |||||||||||||
MAX | 35.21 | 41.20 | 43.80 | 48.72 | 56.33 | 63.03 | 69.92 | 69.15 | 61.74 | 51.66 | 42.57 | 34.67 | 47.44 | |||||||||||||
MIN | 14.31 | 20.24 | 33.45 | 36.70 | 46.58 | 54.19 | 56.90 | 59.93 | 49.84 | 41.09 | 22.93 | 15.25 | 41.63 | |||||||||||||
YRS | 42 | 43 | 41 | 43 | 44 | 42 | 40 | 43 | 41 | 43 | 40 | 38 | 31 |