YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.67 | m | ----- | z |
1958 | 28.52 | 33.54 | 30.84 | 39.70 | 57.77 | 66.30 | 69.10 | 67.33 | a | 57.40 | 49.38 | b | 39.90 | 33.87 | a | 47.80 | ||||||||||
1959 | 29.68 | 26.52 | a | 32.97 | 39.76 | a | 47.55 | b | 61.87 | 65.23 | a | 60.17 | b | 54.46 | b | 42.19 | 39.63 | 35.24 | b | 44.61 | ||||||
1960 | 26.17 | b | 24.03 | 37.16 | 45.93 | a | 52.42 | 64.17 | 67.48 | 67.10 | 60.43 | 48.27 | a | 41.03 | 30.67 | a | 47.07 | |||||||||
1961 | 34.03 | 29.46 | 29.74 | 39.07 | b | 50.32 | 60.80 | 64.00 | a | 60.48 | 51.33 | 46.52 | 31.10 | 24.61 | 43.46 | |||||||||||
1962 | 28.60 | a | 25.21 | 27.11 | c | 42.52 | a | 48.13 | 57.70 | 62.06 | 62.97 | 54.46 | b | 48.47 | a | 37.13 | 34.90 | 44.11 | ||||||||
1963 | 23.68 | 32.00 | 29.52 | 38.77 | 53.74 | 56.77 | 65.97 | 61.74 | 59.60 | 53.03 | 40.23 | 32.77 | 45.65 | |||||||||||||
1964 | 27.77 | 25.24 | 26.58 | 37.33 | 51.00 | a | 60.27 | 67.00 | 61.10 | a | 55.27 | 53.90 | b | 35.92 | d | 25.28 | b | 43.89 | ||||||||
1965 | 31.21 | c | 29.00 | 27.57 | a | 39.54 | b | 47.57 | c | 56.70 | 65.17 | a | 63.15 | d | 50.30 | c | 54.43 | c | 37.85 | c | 31.73 | a | 44.52 | |||
1966 | 26.16 | 23.92 | d | 37.61 | c | 43.40 | 55.07 | c | 60.30 | 68.53 | a | 65.90 | a | 60.19 | c | 50.97 | a | 39.00 | 33.71 | 47.06 | ||||||
1967 | 31.52 | 31.96 | 37.06 | 39.10 | 49.35 | 56.33 | 65.35 | 62.97 | 57.63 | 52.52 | 41.70 | 28.68 | 46.18 | |||||||||||||
1968 | 35.23 | 34.76 | 36.97 | a | 37.70 | 49.97 | 63.83 | 59.29 | 51.97 | a | 53.00 | 49.10 | a | 32.28 | a | 28.52 | 44.38 | |||||||||
1969 | 28.10 | 27.96 | 31.17 | a | 43.57 | 55.71 | 57.48 | a | 66.13 | 65.84 | 59.20 | 39.52 | 39.70 | 34.87 | 45.77 | |||||||||||
1970 | 33.03 | 34.11 | 29.61 | 34.55 | a | 52.00 | 59.93 | 66.55 | 66.19 | 56.17 | a | 40.35 | 38.07 | 32.14 | b | 45.23 | ||||||||||
1971 | 32.19 | 28.50 | 34.48 | 41.17 | a | 46.83 | b | 56.83 | 66.00 | 63.10 | 54.77 | 45.13 | a | 38.43 | 27.10 | a | 44.55 | |||||||||
1972 | 36.61 | 34.39 | a | 46.19 | 46.77 | 53.48 | 61.60 | 66.06 | 63.90 | 56.03 | 45.77 | 32.63 | 31.45 | 47.91 | ||||||||||||
1973 | 30.58 | 30.79 | ----- | z | 35.33 | 48.52 | 59.73 | 64.97 | a | 64.06 | 56.03 | 52.06 | 39.07 | 35.16 | 46.94 | a | ||||||||||
1974 | 28.39 | 34.82 | 40.10 | 39.93 | 56.29 | 63.87 | 64.55 | 63.35 | 61.55 | a | 47.84 | 39.37 | 29.61 | 47.47 | ||||||||||||
1975 | 30.87 | 28.00 | 30.30 | a | 33.00 | 46.06 | 58.63 | 64.65 | 63.74 | 57.87 | 51.13 | 39.87 | 38.74 | 45.24 | ||||||||||||
1976 | 37.45 | 36.21 | 33.61 | 41.00 | 49.89 | l | 59.13 | 62.03 | 58.10 | a | 49.10 | a | 39.29 | 32.67 | 34.26 | 43.90 | a | |||||||||
1977 | 29.52 | 33.11 | a | 29.87 | 43.33 | ----- | z | ----- | z | ----- | z | ----- | z | 60.03 | a | 53.39 | ----- | z | ----- | z | 41.54 | f | ||||
1978 | ----- | z | 35.07 | 36.26 | 46.18 | b | ----- | z | 61.50 | 68.62 | b | 70.39 | 61.15 | d | 58.42 | 41.53 | 22.26 | 50.14 | b | |||||||
1979 | 25.39 | 38.21 | 34.19 | 40.30 | c | 46.04 | f | 59.37 | 66.97 | 62.72 | f | 63.14 | i | 52.58 | 34.97 | 36.38 | o | 44.00 | d | |||||||
1980 | 26.84 | 28.76 | 35.19 | o | ----- | z | ----- | z | ----- | z | ----- | z | 66.10 | ----- | z | ----- | z | ----- | z | ----- | z | 40.56 | i | |||
1981 | ----- | z | 40.67 | m | 34.70 | d | 45.38 | n | 50.26 | l | ----- | z | 66.24 | j | 63.50 | e | 61.11 | k | 45.11 | l | ----- | z | 39.94 | m | 49.10 | j |
1982 | 32.17 | m | 32.28 | j | 34.65 | k | 39.16 | k | 49.11 | m | 59.00 | m | 66.60 | u | 63.52 | j | 54.56 | c | 44.89 | d | 35.35 | d | 33.03 | 41.96 | h | |
1983 | 37.03 | 33.82 | 33.32 | 34.63 | 48.26 | 56.07 | 66.32 | 66.32 | 60.30 | 49.10 | 37.52 | a | 25.39 | 45.67 | ||||||||||||
1984 | 34.32 | 34.83 | 34.61 | 38.67 | 55.23 | 59.28 | a | 67.29 | 64.42 | 57.08 | d | 38.93 | a | 37.40 | ----- | z | 47.46 | a | ||||||||
1985 | 31.47 | a | 29.30 | a | 34.00 | a | 45.67 | 49.77 | 63.28 | a | 67.36 | c | 67.96 | e | 52.25 | b | 46.92 | e | 33.68 | k | 38.26 | l | 48.80 | b | ||
1986 | 41.93 | q | 27.52 | e | 40.55 | b | 44.96 | f | 49.89 | c | 62.30 | 63.06 | 65.87 | 50.97 | 44.45 | 40.37 | 37.48 | 48.25 | b | |||||||
1987 | 36.00 | 34.68 | 35.87 | 46.93 | 49.39 | 64.40 | 67.61 | 64.26 | 58.33 | 52.94 | 42.10 | 30.42 | 48.58 | |||||||||||||
1988 | 31.71 | 38.31 | 35.26 | 45.73 | 53.10 | 65.20 | 68.52 | 65.39 | 57.67 | 55.10 | 35.43 | 32.48 | 48.66 | |||||||||||||
1989 | 32.81 | 32.71 | 42.65 | 49.97 | 55.26 | 62.70 | 69.74 | 63.94 | 60.07 | 47.52 | 40.80 | o | 34.16 | 50.14 | a | |||||||||||
1990 | 29.58 | 30.89 | 36.03 | 45.40 | 51.23 | 67.79 | a | 65.70 | a | 64.26 | 61.77 | 48.71 | 40.21 | a | 26.16 | 47.31 | ||||||||||
1991 | 30.74 | 38.79 | 30.94 | 38.56 | l | 52.85 | d | 61.72 | a | 66.71 | 65.26 | 58.43 | 51.16 | 35.03 | 33.90 | 47.78 | a | |||||||||
1992 | 35.39 | 33.72 | 37.32 | 49.57 | 54.00 | a | 61.93 | b | 64.19 | 64.19 | 60.47 | 49.11 | d | 28.43 | 23.24 | b | 46.80 | |||||||||
1993 | 26.58 | e | 24.58 | d | 36.86 | c | 39.27 | d | 47.79 | c | 57.85 | d | 65.45 | b | 61.07 | d | 55.34 | a | 45.08 | e | 32.07 | b | 30.03 | a | 43.50 | |
1994 | 30.81 | 24.46 | 38.00 | e | 38.43 | 49.26 | 64.57 | g | 67.11 | c | 66.39 | h | 56.32 | e | 41.75 | c | 29.53 | 31.87 | 40.75 | b | ||||||
1995 | 25.45 | 36.60 | c | 31.35 | 34.83 | l | 43.59 | b | 56.29 | i | 63.71 | 66.44 | m | 55.63 | 48.77 | 40.07 | a | 32.35 | 41.95 | c | ||||||
1996 | 25.68 | 32.83 | 34.16 | 40.50 | 55.90 | 62.70 | 66.65 | 65.39 | c | 53.10 | 44.55 | b | 36.54 | d | 25.90 | a | 45.32 | |||||||||
1997 | 25.87 | 28.64 | 38.77 | 35.97 | 49.26 | 57.75 | r | 64.16 | f | 61.39 | 57.27 | 45.48 | b | 33.77 | 28.90 | 40.53 | b | |||||||||
1998 | 29.23 | 26.14 | 31.74 | 34.80 | 50.32 | 57.19 | d | 66.17 | a | 64.18 | c | 60.17 | 44.48 | 36.10 | 31.84 | 44.36 | ||||||||||
1999 | 31.41 | b | 33.22 | a | 38.83 | a | 35.57 | 40.88 | n | 58.03 | a | 63.29 | 60.44 | d | 54.10 | 52.07 | b | 46.86 | b | 30.61 | 45.86 | a | ||||
2000 | 28.52 | 29.36 | a | 34.00 | 44.93 | a | 55.07 | a | 63.37 | c | 68.38 | b | 65.68 | f | 59.17 | 44.55 | b | 27.83 | 29.80 | a | 44.09 | a | ||||
2001 | 27.77 | a | 27.18 | 33.63 | a | 39.87 | 54.45 | 63.57 | 66.68 | 63.30 | a | 59.60 | 48.48 | b | 37.30 | ----- | z | 47.44 | a | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.30 | 31.03 | 34.43 | 40.89 | 51.29 | 60.82 | 65.89 | 63.71 | 56.79 | 48.05 | 37.03 | 30.90 | 45.80 | |||||||||||||
S.D. | 3.58 | 4.21 | 4.21 | 4.36 | 3.38 | 3.03 | 2.14 | 3.11 | 3.29 | 4.62 | 4.07 | 3.92 | 1.59 | |||||||||||||
SKEW | 0.29 | -0.03 | 0.37 | 0.24 | -0.04 | 0.21 | -0.78 | -1.28 | -0.48 | -0.14 | -0.36 | -0.36 | 0.27 | |||||||||||||
MAX | 37.45 | 38.79 | 46.19 | 49.97 | 57.77 | 67.79 | 69.74 | 70.39 | 61.77 | 58.42 | 46.86 | 38.74 | 48.66 | |||||||||||||
MIN | 23.68 | 23.92 | 26.58 | 33.00 | 43.59 | 56.07 | 59.29 | 51.97 | 49.10 | 38.93 | 27.83 | 22.26 | 43.46 | |||||||||||||
YRS | 40 | 42 | 41 | 38 | 36 | 37 | 39 | 38 | 41 | 42 | 39 | 37 | 25 |