YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.76 | n | 75.17 | 64.26 | 48.63 | 36.06 | 56.03 | h | ||||
1964 | 30.42 | 29.69 | 36.13 | 47.83 | a | 64.10 | 71.63 | 84.39 | 76.42 | 70.83 | 64.00 | a | 42.80 | 31.03 | a | 54.11 | ||||||||||
1965 | 34.90 | 35.04 | 33.65 | 50.93 | 62.48 | 70.23 | 78.53 | a | 75.84 | 62.07 | 64.29 | 46.45 | a | 37.26 | 54.31 | |||||||||||
1966 | 30.90 | 32.46 | 47.90 | 57.60 | 68.13 | 73.47 | 83.84 | 79.35 | 71.23 | 58.50 | a | ----- | z | 35.59 | b | 58.09 | a | |||||||||
1967 | 36.62 | b | 36.25 | 47.65 | ----- | z | 61.50 | g | 69.07 | b | 81.21 | b | 78.97 | 70.12 | d | 64.41 | d | 48.00 | h | 32.57 | j | 60.54 | d | |||
1968 | 35.50 | i | 39.15 | i | 43.27 | i | 47.90 | i | 61.36 | i | 75.90 | j | 79.71 | j | 71.82 | i | 69.65 | j | 61.78 | h | 41.00 | k | 34.45 | k | ----- | z |
1969 | 35.86 | b | 37.38 | d | 38.86 | b | 55.81 | d | 68.90 | a | 68.89 | b | 81.12 | f | 84.11 | d | 72.64 | b | 51.86 | j | 42.12 | e | 36.37 | d | 54.09 | b |
1970 | 31.38 | b | 41.60 | c | 39.11 | c | 44.38 | d | 66.88 | g | 73.11 | b | 80.48 | h | 79.42 | l | 68.70 | j | 52.27 | i | 44.00 | k | 37.35 | k | 45.92 | g |
1971 | 33.30 | k | 36.11 | i | 41.30 | k | 54.18 | h | 63.30 | k | 77.09 | h | 81.70 | k | 80.82 | i | 70.62 | i | 63.00 | n | 43.78 | l | 29.35 | k | ----- | z |
1972 | 34.78 | m | 38.30 | i | 47.04 | h | 57.06 | l | 65.77 | i | 74.77 | h | 81.45 | k | 79.55 | i | 68.94 | m | 59.55 | k | 38.38 | i | 31.88 | n | ----- | z |
1973 | 33.11 | l | 36.29 | k | 40.32 | i | 45.05 | i | 62.09 | h | 70.97 | ----- | z | 77.81 | j | 71.39 | l | 63.52 | j | 46.60 | j | 36.22 | m | 70.97 | k | |
1974 | 31.57 | j | 35.60 | m | 45.86 | j | 53.00 | h | 66.61 | 75.73 | 79.16 | 74.81 | e | 72.70 | j | 61.33 | j | 43.38 | i | 32.62 | j | 74.08 | h | |||
1975 | 33.36 | i | 34.00 | i | 39.40 | k | 44.27 | h | 57.19 | d | 68.03 | 76.81 | 77.19 | 71.67 | 60.38 | b | 41.38 | a | 36.16 | 61.10 | d | |||||
1976 | 33.00 | 40.66 | 37.87 | 51.17 | 62.52 | 72.27 | 82.52 | 75.77 | 68.17 | 54.17 | a | 45.72 | a | 37.97 | 55.15 | |||||||||||
1977 | 31.48 | 38.46 | 38.48 | 55.47 | 64.32 | 80.20 | 79.48 | 76.90 | 72.50 | 60.87 | 43.27 | 34.26 | 56.31 | |||||||||||||
1978 | 33.71 | 36.71 | 45.06 | 52.27 | 58.48 | 74.17 | 82.13 | 79.19 | 74.13 | 64.23 | 47.70 | 30.06 | 56.49 | |||||||||||||
1979 | 25.58 | 35.68 | 42.42 | 49.33 | 60.81 | 70.80 | 80.16 | 75.93 | b | 76.10 | 63.13 | 37.07 | 39.52 | 54.71 | ||||||||||||
1980 | 36.16 | 40.17 | 40.84 | 48.10 | 59.97 | 76.63 | 82.52 | 77.23 | 71.70 | 56.94 | 45.43 | 45.13 | 56.73 | |||||||||||||
1981 | 41.29 | 38.75 | 41.39 | 56.13 | 59.29 | 75.23 | 79.13 | 79.58 | 73.50 | 57.83 | a | 48.89 | b | 35.55 | 57.21 | |||||||||||
1982 | 31.61 | 36.85 | a | 42.06 | 48.73 | 61.03 | 71.87 | 79.81 | 78.06 | 65.43 | 50.52 | 38.37 | 32.52 | 53.07 | ||||||||||||
1983 | 35.58 | 36.00 | 39.13 | 40.83 | 53.74 | 67.90 | a | 75.94 | 78.10 | 73.10 | 61.13 | 42.60 | 29.54 | c | 52.80 | |||||||||||
1984 | 31.31 | b | 36.00 | 39.26 | 45.93 | 64.16 | 69.30 | 79.81 | 77.86 | c | 70.93 | 49.68 | 44.87 | 35.61 | 53.73 | |||||||||||
1985 | 30.26 | 31.81 | b | 39.68 | 49.03 | 61.06 | 72.83 | a | 76.35 | 78.84 | 63.47 | 57.28 | b | 35.90 | 33.58 | 52.51 | ||||||||||
1986 | 39.64 | c | 35.39 | ----- | z | 50.27 | 62.32 | 74.53 | 75.61 | 79.17 | b | 65.00 | b | 56.29 | 43.50 | 34.55 | 56.03 | a | ||||||||
1987 | 34.37 | d | 38.82 | 40.52 | 54.67 | 64.19 | 75.97 | 80.81 | 77.35 | 72.43 | 65.45 | 44.57 | 32.93 | a | 56.84 | |||||||||||
1988 | 27.74 | 34.72 | k | 39.74 | h | 52.77 | 62.83 | a | 76.80 | 81.74 | 79.19 | 69.87 | 63.55 | 41.40 | 32.81 | 58.87 | b | |||||||||
1989 | 31.00 | c | 32.56 | c | 46.58 | 55.80 | 63.74 | 72.30 | 83.48 | 76.19 | 72.47 | 59.19 | 45.83 | 34.60 | k | 58.10 | a | |||||||||
1990 | 35.19 | j | 40.33 | j | 44.12 | f | 54.50 | 61.10 | 78.53 | 79.61 | 77.55 | 75.30 | 57.00 | 46.55 | a | 31.45 | 62.40 | c | ||||||||
1991 | 32.39 | 42.00 | a | 41.42 | 48.60 | 63.74 | 73.17 | 79.69 | b | 79.13 | 71.17 | 63.21 | b | 40.27 | 37.16 | 55.99 | ||||||||||
1992 | 36.33 | a | 40.41 | 46.52 | 59.13 | 66.16 | 72.55 | a | 77.55 | 78.06 | 70.71 | b | 64.06 | 35.17 | 31.85 | d | 56.54 | |||||||||
1993 | 33.94 | 34.42 | b | 41.10 | 45.86 | b | 63.33 | a | 73.08 | d | 78.97 | a | 77.00 | a | 70.00 | b | 52.29 | 35.50 | b | 32.45 | 53.16 | |||||
1994 | 32.55 | 31.75 | 43.71 | c | 48.15 | c | 64.59 | b | 77.97 | 82.32 | 81.57 | a | 71.40 | 56.18 | i | 40.91 | h | 36.22 | d | 57.02 | b | |||||
1995 | 38.67 | p | 40.96 | a | 45.95 | l | 50.41 | m | 56.81 | j | 69.97 | 74.28 | f | 80.84 | 69.65 | d | 58.00 | a | 45.73 | 39.29 | 57.78 | e | ||||
1996 | 34.10 | a | 42.72 | 42.15 | e | 50.23 | 66.97 | 74.72 | a | 81.74 | 82.00 | 68.00 | 59.13 | 45.87 | 33.23 | 56.74 | ||||||||||
1997 | 33.80 | a | 38.79 | 44.61 | 44.50 | b | 61.74 | d | 74.82 | b | 82.45 | 76.77 | 71.57 | 59.84 | 41.87 | 37.56 | d | 55.69 | ||||||||
1998 | 37.21 | b | 36.71 | 39.65 | 46.70 | 63.19 | 66.43 | 79.26 | 78.10 | 75.17 | 57.68 | 41.90 | 29.61 | c | 54.30 | |||||||||||
1999 | 35.88 | e | 37.57 | 45.81 | 46.10 | 57.90 | 72.92 | d | 77.65 | 74.22 | d | 65.10 | 59.55 | 52.60 | 30.81 | 54.68 | ||||||||||
2000 | 32.87 | a | 38.04 | c | 40.45 | 48.39 | g | 65.13 | a | 77.00 | 82.33 | d | 79.89 | d | 74.04 | c | 66.77 | 43.48 | a | 43.07 | a | 58.46 | a | |||
2001 | 39.87 | 41.04 | 46.06 | 54.63 | 64.23 | 78.50 | 84.26 | 76.90 | 67.77 | 55.23 | 44.43 | 31.24 | b | 57.01 | ||||||||||||
2002 | 29.03 | 29.44 | a | 34.83 | a | 52.50 | 62.10 | 76.89 | c | 89.29 | 81.48 | 72.81 | c | 59.77 | 39.73 | d | 35.16 | 55.25 | ||||||||
2003 | 37.23 | 28.56 | a | 40.13 | 46.60 | 59.77 | 70.10 | 86.61 | 79.97 | 69.83 | a | 62.35 | ----- | z | ----- | z | 58.11 | b | ||||||||
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.57 | x | 69.17 | l | 59.64 | t | 45.13 | o | 37.60 | p | ----- | z |
2005 | 44.33 | y | 37.50 | 40.97 | 53.33 | 65.27 | a | 72.47 | 86.32 | 78.29 | 73.67 | 59.61 | 42.60 | 31.29 | 58.30 | a | ||||||||||
2006 | 34.16 | 35.00 | 41.10 | a | 56.90 | 67.13 | 78.43 | 81.52 | 76.81 | 66.23 | 53.06 | 46.00 | a | 34.65 | 55.92 | |||||||||||
2007 | 31.90 | 36.11 | 46.65 | 55.90 | 64.00 | a | 76.53 | 84.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.44 | e | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 33.65 | 36.61 | 41.57 | 50.90 | 62.84 | 73.40 | 81.03 | 78.23 | 70.67 | 59.53 | 43.28 | 34.75 | 55.18 | |||||||||||||
S.D. | 3.40 | 3.65 | 3.61 | 4.47 | 3.19 | 3.37 | 3.09 | 2.08 | 3.42 | 4.32 | 3.99 | 3.61 | 1.48 | |||||||||||||
SKEW | 0.07 | -0.44 | -0.01 | -0.11 | -0.54 | -0.01 | 0.43 | 0.59 | -0.73 | -0.47 | -0.23 | 0.86 | -0.33 | |||||||||||||
MAX | 41.29 | 42.72 | 47.90 | 59.13 | 68.90 | 80.20 | 89.29 | 84.11 | 76.10 | 66.77 | 52.60 | 45.13 | 57.21 | |||||||||||||
MIN | 25.58 | 28.56 | 33.65 | 40.83 | 53.74 | 66.43 | 75.61 | 74.22 | 62.07 | 49.68 | 35.17 | 29.54 | 52.51 | |||||||||||||
YRS | 34 | 35 | 33 | 34 | 36 | 40 | 36 | 37 | 37 | 35 | 33 | 34 | 23 |