YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 53.00 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | 62.58 | p | 66.54 | c | 73.96 | b | 85.29 | g | 89.59 | c | 92.38 | b | 84.72 | b | 84.87 | g | 77.48 | d | 65.03 | a | 58.27 | p | 78.53 | e |
1964 | 52.17 | h | 54.84 | d | 61.94 | 69.93 | c | 81.76 | b | 88.79 | f | 90.55 | 88.72 | b | 80.38 | a | 76.83 | a | 63.48 | c | 55.72 | m | 74.27 | c | ||
1965 | 56.29 | q | 57.05 | h | 61.90 | a | 74.03 | 81.42 | 88.31 | a | 91.16 | ----- | z | ----- | z | ----- | z | 66.00 | q | 54.39 | 75.20 | f | ||||
1966 | 51.35 | 52.31 | b | 67.93 | c | 75.33 | 83.65 | e | 93.61 | b | 93.61 | 87.32 | c | 83.19 | c | 77.04 | c | 71.83 | 58.24 | b | 74.62 | |||||
1967 | 59.62 | b | 64.00 | 72.27 | e | 76.03 | 82.23 | 89.30 | g | 94.10 | 88.39 | 83.40 | 79.42 | 68.87 | 52.35 | 74.61 | a | |||||||||
1968 | 55.61 | 61.83 | 63.39 | 69.90 | 82.26 | 92.33 | 93.33 | d | 85.16 | 83.53 | 79.13 | 65.90 | 53.87 | 73.85 | ||||||||||||
1969 | 59.33 | a | 58.57 | 61.39 | 76.20 | 83.48 | 91.00 | c | 93.68 | 93.77 | 85.77 | 73.81 | 61.43 | 56.26 | 74.56 | |||||||||||
1970 | 55.68 | 59.68 | 62.26 | 71.62 | f | 84.19 | 90.90 | 93.10 | 91.16 | 83.37 | 70.92 | e | 65.33 | 59.48 | 74.19 | a | ||||||||||
1971 | 58.42 | 60.32 | 68.68 | 73.60 | 79.97 | 92.48 | e | 94.13 | 87.19 | 85.13 | 71.03 | 62.79 | a | 53.39 | 73.93 | |||||||||||
1972 | 58.90 | 62.16 | d | 74.55 | 78.24 | e | 82.00 | 87.93 | 92.42 | 89.04 | c | 81.47 | 75.10 | 58.52 | e | 54.58 | g | 76.39 | a | |||||||
1973 | 49.55 | 53.78 | j | 59.29 | 68.03 | 81.47 | l | 89.33 | 90.29 | 90.10 | b | 87.37 | 78.10 | 67.13 | 58.29 | 73.75 | b | |||||||||
1974 | 57.57 | a | 60.04 | 71.68 | 75.07 | 86.65 | 95.21 | b | 88.70 | h | 87.16 | 81.87 | 71.35 | 62.90 | 53.87 | 73.03 | a | |||||||||
1975 | 54.83 | a | 58.07 | 65.48 | ----- | z | 83.12 | f | 90.67 | 88.55 | 91.65 | 85.07 | 75.55 | 65.03 | 57.42 | 73.23 | b | |||||||||
1976 | 56.19 | 63.17 | 66.10 | 73.67 | 81.03 | 91.80 | 88.90 | 89.87 | 81.57 | 70.39 | 60.90 | 56.16 | 73.31 | |||||||||||||
1977 | 53.03 | 61.36 | 61.87 | 74.07 | 82.03 | 92.27 | 91.39 | 94.35 | 87.70 | 77.85 | k | 67.60 | 61.52 | 75.20 | a | |||||||||||
1978 | 55.78 | h | 60.59 | k | 68.10 | 76.23 | 83.20 | a | 94.43 | 96.61 | 89.57 | a | 82.77 | 80.81 | o | 61.10 | 51.03 | 78.12 | c | |||||||
1979 | 48.97 | a | 58.46 | 65.55 | 73.67 | 80.13 | 90.67 | 92.71 | 89.43 | h | 85.59 | a | 81.29 | 59.93 | 58.77 | 72.34 | a | |||||||||
1980 | 56.45 | 59.66 | 62.90 | b | 71.73 | 79.52 | 97.07 | 97.39 | 93.33 | a | 86.27 | 72.55 | 63.60 | 62.23 | a | 75.22 | ||||||||||
1981 | 58.00 | 62.93 | 62.42 | 75.77 | 82.00 | d | 93.70 | 92.35 | 88.23 | 84.19 | d | 74.79 | b | 71.25 | b | 61.65 | 75.61 | |||||||||
1982 | 56.76 | b | 59.61 | 65.93 | c | 74.20 | 80.93 | c | 91.22 | c | 94.07 | a | ----- | z | 82.33 | f | 69.52 | d | 58.78 | g | 46.32 | c | 70.95 | c | ||
1983 | 52.90 | a | 54.36 | c | 56.90 | b | 62.22 | c | 74.48 | d | 84.80 | e | 90.19 | 84.75 | c | 82.63 | 69.19 | 57.60 | 50.53 | a | 68.38 | |||||
1984 | 52.32 | 57.45 | 63.03 | 70.17 | 82.00 | c | 83.00 | 85.58 | 81.28 | f | 80.87 | 66.94 | 63.43 | 58.10 | 69.35 | a | ||||||||||
1985 | 55.74 | 57.43 | 65.63 | a | 76.03 | 82.23 | 93.40 | 93.88 | f | 91.04 | d | 82.63 | 72.47 | a | 63.00 | 58.48 | 72.55 | a | ||||||||
1986 | 62.35 | 61.00 | 67.61 | 76.13 | 83.04 | e | 89.28 | e | 88.61 | 91.61 | 82.80 | 73.23 | 61.37 | 52.37 | l | 76.09 | a | |||||||||
1987 | 55.87 | 57.25 | 62.61 | 74.08 | d | 80.82 | c | 91.93 | b | 92.48 | 88.11 | d | 85.87 | 79.57 | a | 62.90 | 54.10 | 73.80 | ||||||||
1988 | 53.81 | 63.26 | f | 66.65 | 73.70 | 82.90 | 90.07 | 88.74 | 84.94 | 82.50 | 78.29 | 65.37 | 54.10 | 74.64 | a | |||||||||||
1989 | 55.68 | 62.43 | 72.23 | 81.83 | 85.31 | b | 91.83 | g | 83.92 | r | 86.23 | 84.33 | 75.06 | 65.06 | l | 56.77 | 73.32 | c | ||||||||
1990 | 56.53 | a | 58.00 | 66.32 | 75.47 | 79.14 | i | 96.52 | e | 86.65 | 83.50 | a | 80.85 | c | 74.90 | 62.96 | e | 53.57 | c | 72.30 | a | |||||
1991 | 53.90 | 60.30 | a | 61.45 | b | 73.63 | 81.23 | 88.23 | 85.71 | 84.72 | b | 79.30 | 79.00 | c | 60.96 | b | 52.50 | a | 71.74 | |||||||
1992 | 49.13 | h | 57.17 | 64.32 | 75.90 | 77.04 | h | 89.07 | 90.68 | 87.06 | 86.10 | a | 77.39 | 61.56 | e | 51.29 | 74.05 | b | ||||||||
1993 | 53.97 | 57.48 | a | 66.90 | 74.87 | 81.38 | e | 89.88 | f | 89.36 | t | 83.67 | v | 82.72 | a | 73.44 | d | 62.88 | f | 57.65 | e | 68.55 | d | |||
1994 | 59.93 | d | 59.04 | c | 67.32 | 74.64 | b | 82.70 | a | 95.76 | a | 93.42 | 91.48 | 83.77 | 74.93 | b | 60.73 | 56.26 | 75.00 | |||||||
1995 | 53.65 | 63.07 | 65.97 | 72.19 | c | 80.00 | 88.90 | 90.90 | 89.57 | a | 84.21 | a | 78.97 | 68.60 | 57.94 | 74.50 | ||||||||||
1996 | 60.68 | 64.72 | 66.68 | 76.03 | 87.90 | 93.03 | 90.94 | 86.45 | 80.47 | 74.82 | c | 64.47 | 59.80 | a | 75.50 | |||||||||||
1997 | 54.19 | 58.50 | b | 69.90 | 72.04 | b | 84.80 | a | 90.82 | b | 90.19 | e | 87.60 | a | 84.97 | a | 73.87 | 63.66 | a | 49.55 | 73.34 | |||||
1998 | 59.26 | 55.25 | 64.23 | a | 69.53 | 83.00 | 91.60 | 89.45 | b | 88.19 | 86.31 | a | 73.40 | a | 66.63 | 57.28 | f | 75.17 | a | |||||||
1999 | 60.63 | a | 66.32 | 68.94 | 72.83 | a | 82.48 | 87.90 | 86.74 | 85.03 | 82.68 | b | 76.77 | 70.37 | 53.97 | 74.56 | ||||||||||
2000 | 62.80 | a | 64.28 | 68.10 | b | 79.61 | b | 88.35 | 89.50 | 90.62 | b | 87.83 | a | 88.43 | 69.93 | a | 56.07 | 57.42 | 75.25 | |||||||
2001 | 50.43 | a | 59.56 | a | 66.50 | a | 74.38 | a | 86.35 | 91.83 | 90.35 | 87.52 | 84.97 | 78.90 | 64.24 | a | 55.77 | 74.23 | ||||||||
2002 | 57.13 | 59.68 | 68.60 | a | 81.64 | b | 85.30 | a | 96.14 | b | 90.45 | 90.72 | b | 84.27 | 72.86 | b | 63.68 | b | 53.29 | 75.31 | ||||||
2003 | 62.52 | 58.36 | 66.17 | a | 74.60 | 85.68 | 91.60 | 94.97 | a | 90.87 | a | 87.17 | 79.35 | 64.50 | 57.37 | a | 76.09 | |||||||||
2004 | 55.77 | a | 55.32 | a | 69.52 | 71.76 | a | 83.90 | 90.97 | 92.13 | 86.42 | 82.43 | 73.23 | 60.08 | f | 54.29 | 74.16 | a | ||||||||
2005 | 57.40 | a | 55.14 | 63.77 | a | 73.76 | a | 84.32 | 91.80 | 94.20 | a | 86.20 | a | 86.43 | 74.10 | 68.00 | 60.45 | 74.63 | ||||||||
2006 | 60.20 | a | 64.04 | 65.39 | 78.00 | 86.48 | 92.07 | a | 91.03 | a | 83.00 | a | 77.37 | 71.94 | 66.17 | a | 55.30 | a | 74.25 | |||||||
2007 | 50.20 | a | 60.11 | a | 68.94 | 74.47 | 79.70 | a | 92.14 | a | 90.07 | b | 88.90 | 84.03 | 79.29 | n | 67.63 | 54.23 | 73.67 | a | ||||||
2008 | 53.26 | 62.45 | 69.04 | f | 74.83 | 81.34 | b | 92.70 | 85.23 | 84.87 | a | 80.14 | b | 76.23 | 64.24 | a | 56.77 | a | 73.82 | a | ||||||
2009 | 60.47 | a | 64.07 | 68.55 | 73.63 | 83.32 | 86.18 | b | 93.67 | a | 89.71 | 82.63 | 73.55 | 66.40 | 52.76 | f | 76.56 | a | ||||||||
2010 | 53.07 | c | 55.95 | g | 64.92 | g | 73.09 | g | 82.00 | 95.88 | v | 88.53 | a | 88.62 | e | 84.38 | n | 75.48 | d | 62.77 | 63.14 | c | 73.37 | e | ||
2011 | 57.59 | d | 56.62 | o | 73.38 | b | 77.88 | d | 81.32 | c | 95.73 | 93.29 | 92.55 | 85.45 | a | 76.96 | d | 61.63 | 49.07 | c | 76.81 | a | ||||
2012 | 60.16 | 59.16 | d | 64.20 | k | 78.10 | j | 84.55 | 95.87 | 89.87 | 91.45 | 86.13 | 80.29 | 70.04 | b | 57.36 | c | 77.49 | b | |||||||
2013 | 52.57 | c | 57.79 | 70.42 | 77.76 | e | 82.52 | f | 96.53 | 88.55 | 87.59 | b | 81.46 | b | 74.77 | a | 68.14 | w | ----- | z | 76.38 | c | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 56.20 | 59.70 | 66.17 | 74.33 | 82.74 | 91.52 | 91.15 | 88.40 | 83.67 | 74.98 | 64.26 | 55.78 | 74.18 | |||||||||||||
S.D. | 3.54 | 3.13 | 3.68 | 3.34 | 2.49 | 3.08 | 2.75 | 2.78 | 2.37 | 3.31 | 3.48 | 3.66 | 1.64 | |||||||||||||
SKEW | -0.07 | -0.06 | 0.00 | -0.73 | -0.24 | -0.34 | -0.17 | 0.15 | -0.23 | -0.19 | 0.11 | -0.23 | -2.25 | |||||||||||||
MAX | 62.80 | 66.32 | 74.55 | 81.83 | 88.35 | 97.07 | 97.39 | 94.35 | 88.43 | 81.29 | 71.83 | 63.14 | 76.09 | |||||||||||||
MIN | 48.97 | 52.31 | 56.90 | 62.22 | 74.48 | 83.00 | 85.23 | 83.00 | 77.37 | 66.94 | 56.07 | 46.32 | 68.38 | |||||||||||||
YRS | 46 | 44 | 48 | 47 | 45 | 46 | 47 | 46 | 47 | 47 | 45 | 44 | 21 |