YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.64 | x | 79.60 | y | 69.46 | s | 55.41 | s | 41.13 | 41.13 | k | |
1964 | 42.90 | a | 43.66 | a | 55.95 | a | 66.58 | 75.87 | 81.50 | 84.71 | 84.45 | 74.74 | a | 65.82 | a | 56.37 | 46.98 | 64.96 | ||||||||
1965 | 49.63 | 46.79 | 50.71 | 68.62 | 71.29 | l | ----- | z | 84.15 | g | 80.37 | 79.94 | u | 62.50 | q | 60.20 | 50.66 | 58.14 | e | |||||||
1966 | 40.53 | 44.55 | 59.61 | 64.87 | 72.71 | 79.40 | 85.45 | 79.80 | a | 75.39 | u | 60.96 | q | 59.32 | 47.50 | h | 65.14 | c | ||||||||
1967 | 46.35 | 50.77 | 63.77 | 71.43 | 74.40 | 82.47 | 83.36 | b | 79.87 | ----- | z | 64.55 | i | 55.58 | 43.55 | 65.16 | b | |||||||||
1968 | 45.52 | 47.71 | 55.03 | 63.84 | a | 74.56 | 80.55 | 79.50 | m | ----- | z | 74.12 | b | 68.89 | 52.15 | 45.12 | w | 62.49 | c | |||||||
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.48 | j | 84.60 | 76.83 | 65.18 | 53.98 | 50.03 | 66.12 | g | |||||
1970 | 45.05 | a | 50.29 | 53.39 | 65.53 | 71.65 | 79.20 | 83.40 | 82.95 | 76.68 | 61.15 | 53.60 | 53.02 | a | 64.66 | |||||||||||
1971 | 51.92 | 49.91 | 58.06 | 64.95 | 73.87 | a | 80.55 | 83.19 | ----- | z | ----- | z | ----- | z | 53.19 | q | 46.98 | e | 63.68 | d | ||||||
1972 | 44.84 | f | 47.54 | e | 61.24 | d | 70.06 | e | 71.65 | e | 79.42 | d | 79.64 | f | 77.96 | d | 75.19 | d | 64.75 | g | 47.29 | f | 42.58 | f | 69.01 | e |
1973 | 37.78 | h | 43.85 | e | 55.37 | d | 58.58 | e | 70.00 | f | 78.29 | d | 79.60 | f | 78.18 | c | 74.12 | e | 66.20 | f | 57.92 | e | 43.74 | h | 63.76 | e |
1974 | 42.60 | e | 46.74 | e | 62.58 | e | 64.65 | d | 75.54 | e | 79.06 | e | 81.94 | g | 77.85 | d | 66.69 | f | 62.96 | f | 50.96 | f | 42.16 | f | 64.15 | e |
1975 | 43.92 | f | 47.35 | e | 53.37 | e | 62.73 | d | 69.63 | e | 79.38 | f | 77.27 | e | 79.06 | e | 69.56 | e | 63.82 | f | 53.07 | g | 44.44 | e | 62.93 | d |
1976 | 40.86 | j | 54.98 | g | 56.98 | e | 66.98 | d | 67.58 | f | 79.37 | d | 76.74 | f | 79.69 | g | 71.00 | e | 56.96 | g | 48.15 | f | 41.85 | e | 63.23 | g |
1977 | 41.76 | h | 51.65 | h | 55.12 | e | 64.36 | e | 75.52 | g | 81.62 | d | 84.10 | g | 85.76 | d | 81.50 | e | 66.88 | j | 55.00 | h | 48.71 | l | 73.67 | g |
1978 | 39.07 | i | 41.09 | f | 57.94 | e | 69.40 | e | 75.62 | g | 79.77 | d | 84.70 | f | 81.59 | d | 72.36 | e | 63.96 | f | 54.17 | f | 45.07 | j | 72.21 | g |
1979 | 37.06 | f | 44.60 | g | 55.94 | d | 64.76 | e | 70.60 | g | 76.60 | d | 83.72 | f | 80.57 | c | 74.88 | 67.79 | 49.28 | 46.82 | a | 64.58 | d | |||
1980 | 46.47 | b | 48.09 | a | 54.60 | 62.45 | a | 73.19 | d | 83.95 | 86.60 | 81.26 | 74.78 | 60.23 | 48.45 | a | 45.83 | a | 63.82 | |||||||
1981 | 43.08 | a | 50.45 | 52.87 | 65.05 | a | 69.08 | a | 79.20 | 82.66 | 77.77 | 75.70 | 65.40 | b | 58.28 | 48.24 | b | 63.98 | ||||||||
1982 | 45.67 | j | 45.17 | g | 56.41 | c | 63.69 | a | 69.98 | 79.66 | b | 84.50 | 84.03 | a | 79.86 | a | 66.59 | b | 52.69 | c | 45.54 | e | 68.30 | b | ||
1983 | 43.42 | a | 48.56 | a | 54.34 | c | 60.00 | 73.14 | c | 77.03 | a | 83.95 | 83.61 | 78.22 | 69.52 | c | 58.46 | c | 41.67 | j | 66.39 | a | ||||
1984 | 38.07 | a | 47.12 | c | 54.93 | a | 63.08 | 73.63 | a | 78.98 | a | 80.55 | 81.24 | 73.50 | 62.98 | d | 49.57 | b | 46.50 | c | 62.51 | |||||
1985 | 38.91 | c | 44.33 | e | 56.63 | a | 67.12 | 76.67 | b | 77.02 | b | 79.63 | 83.87 | 76.36 | b | 63.89 | 56.75 | 42.54 | c | 63.64 | ||||||
1986 | 46.21 | 50.88 | 59.32 | 69.78 | 72.87 | 77.80 | 80.82 | 80.29 | 74.15 | 62.32 | 51.95 | 44.06 | 64.21 | |||||||||||||
1987 | 42.55 | 47.50 | 50.34 | 59.32 | 69.90 | b | 75.64 | a | 79.68 | c | 81.27 | c | 72.93 | 66.85 | 53.03 | 42.37 | e | 61.78 | ||||||||
1988 | 39.48 | b | 46.61 | a | 54.11 | c | 64.12 | 71.32 | 79.38 | 79.82 | 81.27 | a | 74.73 | 65.70 | a | 56.55 | 43.90 | 63.08 | ||||||||
1989 | 45.87 | 44.79 | 56.58 | 66.28 | 76.03 | 79.41 | a | 83.44 | 81.05 | 72.43 | 66.97 | 54.38 | 37.71 | 63.75 | ||||||||||||
1990 | 45.89 | 51.39 | a | 54.65 | 64.55 | a | 72.18 | 86.37 | 79.34 | 77.84 | 74.97 | a | 63.08 | 55.48 | b | 42.17 | b | 63.99 | ||||||||
1991 | 40.47 | 50.62 | b | 57.23 | 65.67 | 77.30 | c | 81.10 | 80.17 | a | 79.03 | 69.77 | 64.66 | 48.11 | b | 45.74 | 63.32 | |||||||||
1992 | 41.37 | 50.70 | b | 56.80 | a | 62.73 | b | 67.97 | a | 77.16 | a | 81.47 | 78.23 | 74.91 | b | 65.88 | b | 47.80 | e | 48.55 | i | 64.09 | a | |||
1993 | 42.97 | a | 48.32 | i | 55.84 | b | 62.43 | c | 72.52 | b | 80.20 | b | 83.68 | a | 82.50 | 72.48 | b | 62.69 | e | 49.15 | 47.00 | d | 64.68 | a | ||
1994 | 43.71 | b | 47.06 | a | 57.08 | a | 63.59 | b | 71.97 | a | 85.05 | 84.88 | b | 82.76 | 73.96 | d | 65.73 | c | 56.04 | d | 49.05 | c | 65.07 | |||
1995 | 44.04 | e | 53.31 | d | 54.00 | c | 63.00 | d | 72.59 | b | 79.24 | a | 83.29 | 82.62 | a | 74.25 | 66.68 | f | 54.33 | a | 46.09 | d | 64.25 | a | ||
1996 | 44.48 | a | 49.15 | c | 50.98 | d | 63.52 | b | 80.94 | 83.93 | a | 84.50 | 80.67 | a | 71.88 | a | 64.24 | 54.65 | c | 46.80 | a | 64.64 | ||||
1997 | 41.78 | a | 45.29 | b | 58.07 | a | 58.42 | 71.20 | a | 77.02 | 83.15 | 81.81 | 77.66 | b | 65.69 | 51.97 | a | 42.13 | 62.85 | |||||||
1998 | 48.28 | b | 48.87 | a | 54.21 | 62.50 | 78.10 | 85.80 | 87.40 | 81.95 | 80.47 | 68.70 | a | 58.37 | 46.20 | c | 66.74 | |||||||||
1999 | 48.65 | 54.50 | a | 57.22 | a | 66.65 | 74.08 | a | 80.42 | 83.84 | 85.42 | 76.80 | 66.98 | b | 59.13 | 45.92 | a | 66.63 | ||||||||
2000 | 48.66 | 55.21 | a | 61.28 | b | 67.63 | 80.23 | c | 79.57 | b | 84.41 | b | 83.52 | 79.18 | 64.34 | 48.05 | a | 42.17 | a | 66.19 | ||||||
2001 | 41.78 | a | 49.86 | 52.45 | a | 67.48 | b | 76.19 | 84.53 | 87.08 | 83.71 | 76.68 | 67.55 | c | 55.70 | 46.24 | 65.77 | |||||||||
2002 | 47.31 | b | 45.71 | 53.74 | 69.12 | 74.93 | a | 81.88 | a | 82.63 | a | 85.18 | a | 76.98 | b | 64.16 | c | 51.13 | 44.03 | 64.74 | ||||||
2003 | 45.45 | 46.19 | d | 57.97 | 67.27 | b | 75.55 | 80.28 | 82.20 | a | 83.70 | a | 74.88 | 67.35 | a | 56.07 | a | 47.37 | 65.36 | |||||||
2004 | 47.17 | a | 47.37 | b | 59.79 | 62.87 | 75.75 | c | 81.53 | a | 81.60 | 79.47 | a | 73.60 | a | 65.43 | d | 51.18 | e | 43.79 | g | 65.98 | a | |||
2005 | 48.46 | c | 45.91 | f | 54.00 | d | 63.17 | d | 71.25 | g | 80.88 | d | 81.64 | f | 79.57 | d | 79.48 | e | 67.90 | g | 54.44 | f | 46.33 | j | 67.60 | f |
2006 | 50.13 | h | 52.12 | h | 60.38 | e | 70.35 | j | 77.55 | i | 82.19 | d | 84.70 | f | 82.13 | d | 74.42 | f | 65.18 | f | 55.36 | i | 46.19 | j | 74.90 | i |
2007 | 40.74 | n | 47.80 | 58.52 | c | 60.33 | a | 67.50 | b | 76.38 | i | 78.18 | 80.03 | 75.82 | 68.53 | 53.68 | 45.26 | 63.56 | b | |||||||
2008 | 43.29 | 49.57 | 56.37 | a | 63.93 | 74.13 | 84.68 | 79.81 | 78.95 | b | 70.63 | 63.32 | 52.77 | 45.27 | 63.56 | |||||||||||
2009 | 45.12 | a | 52.18 | 56.85 | 64.24 | a | 74.84 | 81.38 | 81.86 | b | 82.35 | 73.35 | 62.65 | 55.27 | 41.37 | a | 64.29 | |||||||||
2010 | 42.26 | 43.00 | d | 53.65 | 63.74 | a | 72.13 | 84.83 | 80.24 | 84.97 | 76.93 | 67.97 | 54.20 | b | 46.48 | a | 64.20 | |||||||||
2011 | 42.68 | 45.38 | 62.71 | 70.80 | b | 74.32 | 89.05 | 87.98 | a | 88.97 | 78.37 | 67.56 | 55.05 | 42.02 | 67.07 | |||||||||||
2012 | 47.50 | 49.88 | 60.74 | 72.62 | 76.23 | 86.10 | 84.34 | 85.60 | 77.02 | 66.70 | c | 60.41 | c | 48.50 | 67.97 | |||||||||||
2013 | 44.06 | 49.21 | 57.74 | 64.72 | 74.23 | 85.28 | 81.59 | b | 85.58 | 79.16 | e | ----- | z | ----- | z | ----- | z | 69.06 | c | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 44.46 | 48.29 | 56.48 | 64.98 | 73.67 | 80.96 | 82.70 | 81.81 | 75.29 | 65.50 | 54.18 | 45.31 | 64.57 | |||||||||||||
S.D. | 3.11 | 2.89 | 3.10 | 3.22 | 2.94 | 3.00 | 2.55 | 2.61 | 2.81 | 2.28 | 3.51 | 3.01 | 1.48 | |||||||||||||
SKEW | 0.12 | 0.31 | 0.31 | 0.23 | 0.16 | 0.59 | 0.02 | 0.34 | 0.07 | -0.33 | -0.17 | 0.05 | 0.46 | |||||||||||||
MAX | 51.92 | 55.21 | 63.77 | 72.62 | 80.94 | 89.05 | 87.98 | 88.97 | 81.50 | 69.52 | 60.41 | 53.02 | 67.97 | |||||||||||||
MIN | 38.07 | 43.00 | 50.34 | 58.42 | 67.50 | 75.64 | 77.27 | 77.77 | 69.56 | 60.23 | 47.80 | 37.71 | 61.78 | |||||||||||||
YRS | 39 | 41 | 49 | 48 | 41 | 46 | 38 | 47 | 44 | 35 | 40 | 38 | 26 |