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 | 71.43 | x | 66.80 | y | 55.50 | s | 41.18 | s | 29.13 | 29.13 | k | |
1964 | 27.63 | a | 27.45 | 39.33 | a | 49.87 | 61.39 | 67.33 | 71.55 | 71.16 | 64.72 | a | 52.37 | a | 43.20 | 31.94 | 50.66 | |||||||||
1965 | 35.42 | 32.79 | 36.23 | 53.20 | 59.52 | 68.20 | 70.81 | 67.74 | 67.00 | u | 47.79 | q | 46.33 | 38.68 | 50.89 | b | ||||||||||
1966 | 27.84 | 29.54 | 44.55 | 49.70 | 59.26 | 66.90 | 73.35 | 68.00 | a | 64.78 | u | 44.79 | q | 45.50 | 29.52 | 49.42 | b | |||||||||
1967 | 28.74 | 34.64 | 46.65 | 57.40 | 57.29 | 69.80 | 70.73 | a | 67.42 | ----- | z | 48.50 | i | 43.37 | 30.42 | 50.65 | b | |||||||||
1968 | 34.61 | 34.48 | 41.94 | 49.67 | 60.48 | 66.03 | 67.67 | m | ----- | z | 60.57 | b | 54.58 | 39.67 | 27.50 | w | 49.11 | c | ||||||||
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.90 | j | 71.81 | 64.07 | 52.65 | 39.10 | 35.10 | 52.54 | g | |||||
1970 | 27.52 | 34.50 | 37.58 | 49.60 | 55.35 | 64.90 | 69.87 | 69.68 | 65.17 | 46.06 | 34.47 | 36.50 | a | 49.27 | ||||||||||||
1971 | 33.23 | 31.07 | 38.35 | 49.67 | 58.26 | 68.47 | 69.13 | ----- | z | ----- | z | ----- | z | 38.87 | o | 34.50 | e | 47.83 | d | |||||||
1972 | 26.96 | f | 31.58 | e | 44.74 | d | 52.80 | e | 58.92 | e | 66.31 | d | 68.08 | f | 66.07 | d | 62.73 | d | 51.54 | g | 33.16 | e | 26.24 | f | 52.04 | d |
1973 | 25.64 | f | 31.00 | e | 39.93 | d | 43.84 | e | 53.96 | f | 63.38 | d | 67.56 | f | 63.64 | c | 61.24 | e | 51.00 | f | 42.48 | e | 25.39 | h | 49.36 | e |
1974 | 26.12 | e | 28.26 | e | 44.73 | e | 48.65 | d | 60.50 | e | 64.16 | e | 68.50 | g | 65.78 | d | 55.96 | f | 51.36 | f | 37.68 | e | 28.20 | f | 46.98 | d |
1975 | 28.80 | f | 32.17 | e | 35.69 | e | 46.54 | d | 53.88 | e | 64.29 | f | 65.35 | e | 65.58 | e | 56.04 | e | 48.52 | f | 35.26 | g | 27.12 | e | 47.80 | d |
1976 | 23.91 | h | 34.91 | f | 39.74 | d | 52.15 | d | 52.04 | f | 65.04 | d | 65.16 | f | 64.24 | f | 59.04 | e | 42.38 | g | 32.76 | e | 25.27 | e | 45.67 | f |
1977 | 25.62 | e | 34.95 | g | 38.31 | e | 49.80 | e | 61.54 | g | 67.42 | d | 70.62 | g | 72.26 | d | 66.88 | e | 52.91 | i | 38.96 | e | 31.38 | e | 48.83 | d |
1978 | 24.52 | f | 28.48 | e | 41.69 | e | 53.32 | e | 60.88 | f | 66.12 | d | 71.52 | f | 68.48 | d | 62.32 | e | 49.96 | f | 42.08 | f | 29.32 | f | 53.40 | f |
1979 | 25.58 | e | 28.13 | e | 40.59 | d | 48.32 | e | 56.00 | g | 62.04 | d | 70.68 | f | 66.79 | c | 60.43 | 50.81 | 35.93 | 31.73 | a | 45.04 | b | |||
1980 | 31.66 | b | 33.68 | a | 38.16 | 46.87 | 58.87 | a | 69.50 | 72.81 | 68.39 | 64.03 | 46.48 | 33.33 | 32.77 | 49.71 | ||||||||||
1981 | 30.47 | a | 35.57 | 40.74 | 52.79 | a | 55.43 | a | 65.60 | 68.74 | 64.77 | 62.53 | 55.14 | b | 41.97 | 31.41 | b | 50.43 | ||||||||
1982 | 31.10 | j | 29.55 | f | 40.36 | c | 50.34 | a | 56.58 | 66.79 | b | 70.81 | 71.00 | a | 66.31 | a | 52.40 | a | 39.75 | b | 32.96 | d | 54.73 | b | ||
1983 | 30.60 | a | 35.18 | 39.93 | c | 45.00 | 57.90 | a | 63.55 | a | 70.97 | 70.32 | 65.23 | 57.66 | b | 45.70 | c | 27.04 | h | 52.91 | a | |||||
1984 | 27.70 | a | 31.73 | c | 39.60 | a | 47.23 | 59.87 | a | 68.34 | a | 67.87 | 68.48 | 60.00 | 51.72 | b | 36.31 | a | 34.54 | c | 49.45 | |||||
1985 | 25.69 | b | 32.25 | d | 43.43 | a | 52.67 | 61.07 | b | 63.55 | a | 65.32 | 69.35 | 63.83 | a | 53.13 | 42.63 | 26.70 | a | 49.97 | ||||||
1986 | 30.10 | 35.57 | 43.10 | 54.73 | 57.55 | 66.33 | 67.29 | 68.00 | 62.90 | 51.87 | 38.40 | 32.68 | 50.71 | |||||||||||||
1987 | 27.87 | 35.14 | 37.13 | 43.93 | 56.90 | a | 63.93 | a | 67.25 | c | 67.36 | c | 59.07 | 51.58 | 37.63 | 26.11 | d | 47.83 | ||||||||
1988 | 25.69 | b | 30.36 | a | 36.07 | b | 47.40 | 57.00 | 66.20 | 67.77 | 68.43 | a | 60.90 | 50.90 | a | 39.10 | 29.81 | 48.30 | ||||||||
1989 | 30.81 | 30.75 | 39.94 | 49.83 | 60.26 | 65.13 | 70.03 | 68.48 | 59.17 | 51.29 | 37.87 | 23.03 | 48.88 | |||||||||||||
1990 | 29.19 | 35.63 | a | 41.94 | 50.59 | a | 57.10 | 72.50 | 68.45 | 66.13 | 63.52 | a | 47.29 | 40.48 | a | 27.10 | a | 49.99 | ||||||||
1991 | 28.29 | 36.77 | b | 41.45 | 49.37 | 62.04 | c | 66.80 | 68.23 | a | 66.03 | 58.80 | 49.00 | 35.14 | a | 33.61 | 49.63 | |||||||||
1992 | 28.94 | 37.19 | b | 41.87 | a | 47.97 | a | 55.97 | a | 63.83 | a | 68.84 | 65.16 | 60.82 | b | 50.14 | b | 33.88 | d | 33.28 | f | 50.42 | a | |||
1993 | 30.00 | a | 32.14 | f | 39.69 | b | 46.04 | c | 57.45 | b | 66.75 | b | 71.33 | a | 69.06 | 59.86 | b | 46.74 | d | 33.97 | 32.30 | d | 50.29 | a | ||
1994 | 27.52 | b | 31.96 | a | 41.60 | a | 46.14 | b | 58.13 | a | 69.20 | 70.83 | b | 69.48 | 59.52 | c | 52.21 | c | 41.19 | d | 35.82 | c | 50.30 | |||
1995 | 29.85 | e | 38.12 | d | 40.14 | c | 46.15 | d | 59.24 | b | 65.31 | a | 68.77 | 70.27 | a | 62.23 | 48.56 | f | 39.31 | a | 30.59 | d | 50.00 | a | ||
1996 | 27.03 | a | 33.15 | c | 33.67 | d | 46.93 | b | 64.97 | 69.34 | a | 72.16 | 69.40 | a | 58.87 | 48.13 | 39.56 | c | 30.37 | a | 49.46 | |||||
1997 | 28.58 | 34.00 | b | 42.87 | a | 45.00 | 57.53 | a | 63.90 | 69.65 | 67.94 | 64.18 | b | 51.48 | 38.00 | a | 28.29 | 49.28 | ||||||||
1998 | 32.31 | b | 34.07 | a | 39.03 | 45.87 | 60.58 | 69.67 | 72.74 | 69.45 | 65.67 | 56.23 | 45.17 | 31.93 | c | 51.89 | ||||||||||
1999 | 31.48 | 37.07 | a | 42.93 | a | 50.90 | 59.23 | a | 67.57 | 71.00 | 71.55 | 63.43 | 50.55 | b | 43.93 | 30.60 | a | 51.69 | ||||||||
2000 | 32.65 | 37.75 | a | 44.47 | a | 51.47 | 63.63 | a | 68.25 | b | 71.76 | b | 70.45 | 64.10 | 53.26 | 35.86 | a | 29.57 | a | 51.93 | ||||||
2001 | 30.13 | a | 35.86 | 40.37 | a | 50.41 | a | 60.52 | 70.33 | 73.29 | 70.81 | 63.37 | 52.00 | c | 43.20 | 32.39 | 51.89 | |||||||||
2002 | 31.21 | b | 30.93 | 37.06 | 54.50 | 59.29 | 69.20 | 70.16 | 71.90 | a | 63.11 | b | 52.36 | c | 38.43 | 30.48 | 50.72 | |||||||||
2003 | 29.58 | 32.83 | d | 42.32 | 50.57 | b | 59.84 | 66.80 | 69.33 | a | 70.52 | 63.50 | 54.10 | a | 43.14 | a | 30.03 | 51.05 | ||||||||
2004 | 34.90 | a | 33.75 | a | 47.77 | 50.23 | 60.43 | c | 67.48 | a | 69.10 | 66.53 | a | 61.90 | a | 53.52 | d | 39.60 | e | 30.12 | g | 53.20 | a | |||
2005 | 34.71 | c | 35.59 | f | 38.44 | d | 43.96 | d | 57.67 | g | 67.58 | d | 68.72 | f | 67.15 | d | 64.32 | e | 55.17 | g | 37.42 | f | 28.57 | j | 52.69 | f |
2006 | 32.04 | h | 34.55 | h | 45.00 | e | 54.65 | j | 60.50 | i | 67.77 | d | 70.68 | f | 70.15 | d | 60.96 | f | 50.40 | f | 39.14 | i | 30.14 | j | 60.97 | i |
2007 | 28.18 | n | 32.46 | 43.86 | c | 47.00 | a | 57.17 | b | 63.90 | i | 66.23 | 67.87 | 63.97 | 52.71 | 39.30 | 29.55 | 50.01 | b | |||||||
2008 | 29.26 | 30.90 | 39.30 | a | 46.07 | 58.26 | 69.93 | 68.48 | 66.30 | a | 58.77 | 48.45 | 36.50 | 29.23 | 48.45 | |||||||||||
2009 | 26.29 | 34.82 | 41.45 | 48.14 | a | 59.97 | 67.63 | 69.10 | b | 68.42 | 59.20 | 46.52 | 38.60 | 26.10 | 48.85 | |||||||||||
2010 | 26.97 | 29.24 | c | 36.19 | 47.59 | a | 57.10 | 69.43 | 69.87 | 69.03 | 62.53 | 50.81 | 35.75 | b | 28.10 | a | 48.55 | |||||||||
2011 | 25.19 | 26.96 | 43.10 | 50.46 | b | 56.26 | 73.17 | 73.63 | a | 74.48 | 63.00 | 51.94 | 39.60 | 32.48 | 50.86 | |||||||||||
2012 | 32.16 | 36.28 | 44.55 | 56.33 | 61.84 | 71.03 | 71.32 | 71.52 | 64.20 | 51.48 | b | 44.44 | c | 32.90 | 53.17 | |||||||||||
2013 | 31.23 | 32.82 | 41.03 | 48.20 | 58.00 | 70.80 | 69.48 | b | 71.97 | 66.92 | e | ----- | z | ----- | z | ----- | z | 54.49 | c | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.52 | 32.95 | 40.79 | 49.28 | 58.83 | 67.22 | 69.83 | 68.74 | 62.34 | 51.36 | 39.33 | 30.82 | 50.11 | |||||||||||||
S.D. | 2.79 | 2.90 | 3.01 | 3.20 | 2.24 | 2.50 | 2.09 | 2.29 | 2.52 | 2.74 | 3.69 | 3.23 | 1.32 | |||||||||||||
SKEW | 0.38 | -0.23 | -0.00 | 0.41 | 0.36 | 0.16 | -0.19 | 0.06 | -0.28 | -0.16 | 0.08 | -0.03 | 0.35 | |||||||||||||
MAX | 35.42 | 38.12 | 47.77 | 57.40 | 64.97 | 73.17 | 73.63 | 74.48 | 66.92 | 57.66 | 46.33 | 38.68 | 53.17 | |||||||||||||
MIN | 25.19 | 26.96 | 33.67 | 43.84 | 53.88 | 62.04 | 65.32 | 63.64 | 56.04 | 46.06 | 32.76 | 23.03 | 47.83 | |||||||||||||
YRS | 41 | 43 | 49 | 48 | 42 | 47 | 39 | 47 | 44 | 35 | 44 | 40 | 26 |