YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1967 | ----- | z | ----- | z | ----- | z | ----- | z | 62.98 | 71.30 | 75.56 | 73.32 | 66.25 | 58.81 | 45.42 | 33.42 | 60.88 | d | ||||||||
1968 | 36.00 | a | 37.91 | 46.57 | a | 55.17 | d | 60.68 | 73.70 | 76.73 | 75.69 | 69.27 | 59.95 | 44.47 | 34.78 | a | 55.91 | |||||||||
1969 | 39.52 | 39.43 | a | 37.35 | 57.45 | 65.08 | 69.83 | 80.29 | 78.23 | 68.73 | 52.90 | 45.08 | 41.27 | e | 56.26 | |||||||||||
1970 | 32.94 | 42.11 | 41.66 | 53.28 | 66.60 | 72.72 | 78.66 | 78.47 | 69.48 | e | 49.90 | j | 44.40 | 41.77 | 56.55 | a | ||||||||||
1971 | 35.63 | 37.09 | 45.44 | 55.78 | 63.92 | 76.00 | 76.78 | a | 72.47 | 69.61 | k | 58.21 | 46.92 | 38.47 | 55.15 | a | ||||||||||
1972 | 36.82 | 41.09 | b | 52.35 | 59.28 | 64.56 | 74.15 | 74.08 | 73.05 | 67.38 | 58.02 | a | 36.58 | 32.65 | 55.84 | |||||||||||
1973 | 32.29 | 38.05 | 45.08 | 48.80 | 60.92 | 72.10 | 76.60 | 77.05 | 66.67 | 59.48 | c | 48.41 | a | 37.03 | b | 55.21 | ||||||||||
1974 | ----- | z | 44.21 | i | 54.31 | 58.71 | b | 71.52 | b | 75.05 | a | 79.20 | c | 71.72 | h | 62.17 | g | 58.79 | e | 48.12 | e | 36.46 | c | 60.27 | d | |
1975 | 38.07 | d | 33.27 | o | 46.58 | k | 52.06 | n | 66.28 | k | 74.08 | l | 75.79 | l | 78.05 | i | 67.30 | b | 62.77 | e | 50.19 | q | 43.17 | y | 56.05 | i |
1976 | 37.55 | l | 48.25 | g | 47.36 | q | 59.61 | l | 64.41 | i | 74.79 | d | 76.82 | l | 77.20 | u | 67.82 | m | 57.17 | p | ----- | z | 42.77 | t | 74.79 | k |
1977 | 32.58 | k | 44.98 | c | 50.24 | h | 57.29 | a | 68.34 | 78.77 | ----- | z | 78.50 | c | 73.76 | c | 61.65 | e | 49.20 | e | 41.43 | p | 64.06 | d | ||
1978 | 30.50 | m | 32.33 | m | 50.31 | j | 60.05 | a | 64.92 | e | 74.89 | l | 82.25 | y | 76.46 | q | 67.50 | u | 64.15 | h | 49.12 | m | 33.19 | w | 62.49 | j |
1979 | 28.58 | g | 41.94 | c | 50.17 | g | 57.86 | e | 63.67 | s | 76.00 | e | 79.21 | j | 74.53 | k | 71.52 | i | 64.45 | j | 42.31 | n | 41.42 | k | 58.60 | i |
1980 | 36.91 | d | 42.17 | h | 45.09 | o | 54.25 | f | 64.38 | f | 80.70 | e | 85.00 | g | 79.70 | c | 72.14 | i | 60.52 | e | 45.81 | f | 43.25 | i | 64.46 | h |
1981 | 40.88 | e | 47.42 | j | 49.95 | i | 63.09 | c | 65.65 | 78.83 | 80.90 | 74.91 | d | 68.20 | 56.02 | a | ----- | z | ----- | z | 66.06 | d | ||||
1982 | ----- | z | ----- | z | ----- | z | 56.17 | c | 64.24 | 68.96 | b | 77.95 | 77.98 | a | 68.67 | f | 55.83 | k | 44.69 | a | 37.50 | f | 65.00 | f | ||
1983 | 34.37 | h | 40.75 | n | 44.64 | c | 50.29 | f | 60.80 | i | 70.76 | k | 80.55 | 82.20 | f | ----- | z | 59.65 | g | 48.87 | d | ----- | z | 58.02 | i | |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | 35.18 | 36.04 | b | 46.65 | a | 54.62 | b | 64.76 | 78.63 | 77.45 | b | 76.68 | c | 69.96 | c | 57.63 | 44.91 | a | 40.77 | 56.94 | ||||||
1995 | 36.85 | 42.76 | a | 46.63 | a | 51.53 | 58.55 | b | 70.38 | 77.55 | 78.44 | 67.60 | 57.19 | 47.35 | 36.79 | b | 55.97 | |||||||||
1996 | 34.44 | 41.41 | 42.08 | 55.67 | a | 69.84 | 75.43 | 76.71 | 73.79 | b | 65.15 | 56.13 | 44.12 | a | 35.13 | 55.83 | ||||||||||
1997 | 32.18 | 35.60 | b | 48.26 | b | 47.13 | 62.45 | 71.77 | 78.31 | 74.53 | 70.07 | a | 56.44 | 41.07 | 32.26 | 54.17 | ||||||||||
1998 | 38.33 | a | 40.29 | 41.05 | a | 51.30 | 68.94 | 75.20 | 80.94 | 75.82 | 74.57 | a | 58.72 | a | 47.40 | 36.41 | b | 57.41 | ||||||||
1999 | 37.89 | c | 43.70 | 44.76 | b | 52.64 | b | 60.79 | b | 71.52 | b | 77.82 | 78.21 | 66.68 | 56.81 | 51.13 | 37.67 | b | 56.64 | |||||||
2000 | 38.40 | b | 45.16 | 46.97 | 55.97 | a | 67.35 | 72.47 | a | 79.42 | 81.21 | b | 72.83 | 57.65 | a | 38.22 | 31.47 | a | 57.26 | |||||||
2001 | 30.45 | 37.13 | a | 42.69 | b | 59.42 | 63.50 | 74.59 | b | 82.53 | a | 77.57 | a | 70.02 | ----- | z | 49.13 | 38.63 | a | 56.88 | a | |||||
2002 | 36.14 | b | 36.55 | 42.60 | 57.98 | 65.57 | a | 78.45 | a | 78.53 | a | 77.58 | a | 68.95 | a | 52.85 | 43.27 | 34.21 | 56.06 | |||||||
2003 | 37.82 | a | 34.80 | c | 46.43 | a | 57.47 | a | 67.55 | a | 70.45 | a | 81.35 | a | 80.18 | a | 66.17 | 59.79 | 44.60 | a | 38.60 | a | 57.10 | |||
2004 | 36.19 | 37.16 | 51.65 | a | 53.48 | a | 67.93 | a | 73.08 | 75.61 | 73.02 | a | 68.54 | b | 57.55 | a | 40.40 | d | 36.82 | 55.95 | ||||||
2005 | 37.89 | 40.20 | 42.72 | d | 53.33 | 61.87 | 73.52 | 77.53 | a | 74.34 | 71.57 | 57.39 | 47.67 | a | 35.21 | 56.10 | ||||||||||
2006 | 40.09 | b | 37.96 | 46.73 | a | 60.28 | 68.79 | c | 77.62 | a | 79.40 | 75.44 | 63.72 | 56.62 | a | 47.14 | l | ----- | z | 60.66 | b | |||||
2007 | ----- | z | 44.45 | r | 51.24 | h | 47.68 | m | 62.58 | l | 71.12 | n | 77.70 | i | 81.57 | x | 71.17 | o | 61.86 | x | 45.25 | p | 34.15 | k | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 36.40 | 39.59 | 45.55 | 55.75 | 65.09 | 74.30 | 78.35 | 76.51 | 68.77 | 57.91 | 45.28 | 36.49 | 56.18 | |||||||||||||
S.D. | 2.67 | 3.10 | 3.98 | 3.73 | 3.23 | 3.11 | 2.07 | 2.46 | 2.71 | 2.34 | 3.61 | 2.93 | 0.83 | |||||||||||||
SKEW | -0.54 | 0.29 | 0.35 | -0.40 | -0.02 | 0.26 | 0.07 | -0.00 | 0.44 | -0.25 | -0.75 | 0.11 | -0.59 | |||||||||||||
MAX | 40.88 | 45.16 | 54.31 | 63.09 | 71.52 | 80.70 | 82.53 | 81.21 | 74.57 | 62.77 | 51.13 | 41.77 | 57.41 | |||||||||||||
MIN | 30.45 | 34.80 | 37.35 | 47.13 | 58.55 | 68.96 | 74.08 | 72.47 | 63.72 | 52.85 | 36.58 | 31.47 | 54.17 | |||||||||||||
YRS | 22 | 21 | 21 | 25 | 25 | 27 | 24 | 24 | 22 | 23 | 23 | 20 | 15 |