YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | 68.52 | 78.83 | 76.08 | 78.44 | 74.23 | 74.52 | 62.23 | 57.13 | 71.25 | d | ||||||||
1951 | 47.87 | 49.57 | 54.56 | 60.50 | 69.66 | 77.25 | 82.35 | 78.23 | 78.93 | 68.52 | 55.13 | 49.35 | 64.33 | |||||||||||||
1952 | 49.65 | 48.43 | 47.66 | 60.05 | 72.24 | 78.75 | 81.23 | 78.35 | 78.67 | 74.45 | 52.70 | 47.08 | 64.10 | |||||||||||||
1953 | 53.39 | 49.50 | 56.73 | 61.05 | 64.71 | 80.42 | 78.56 | 79.60 | ----- | z | 68.39 | 59.47 | 47.40 | 63.56 | a | |||||||||||
1954 | 51.79 | 57.80 | 55.33 | b | 66.92 | 69.81 | g | 77.82 | 78.50 | 74.05 | 75.93 | 69.98 | 60.37 | 52.60 | 65.55 | a | ||||||||||
1955 | 43.76 | 46.82 | 56.10 | 62.15 | 68.23 | 78.50 | a | 77.32 | 72.48 | 75.33 | 70.00 | 55.93 | 54.03 | 63.39 | ||||||||||||
1956 | 53.85 | 45.32 | a | 57.38 | g | 60.79 | i | 72.48 | b | 81.65 | 78.80 | a | 77.79 | 79.44 | l | 67.40 | a | 55.38 | 50.31 | 64.78 | c | |||||
1957 | 49.65 | 57.31 | b | 54.86 | b | 60.90 | 65.87 | a | 80.93 | 80.68 | 77.45 | j | 76.81 | d | 65.57 | i | 49.91 | s | 52.21 | n | 65.88 | d | ||||
1958 | 48.81 | m | 51.28 | j | 50.65 | k | 59.98 | e | 73.85 | h | 80.57 | 80.00 | 75.98 | a | 73.24 | c | 67.25 | e | 56.05 | i | 60.45 | t | 72.84 | f | ||
1959 | 52.54 | d | 49.88 | d | 56.45 | k | 65.98 | d | 68.36 | c | 81.03 | 78.73 | 73.35 | a | 74.32 | 67.13 | 55.42 | 49.02 | 65.07 | a | ||||||
1960 | 44.11 | 45.45 | 59.44 | 63.83 | a | 69.73 | a | 82.62 | b | 81.63 | 78.71 | 77.52 | 64.92 | a | 58.17 | ----- | z | 66.01 | a | |||||||
1961 | 51.08 | 51.09 | 55.73 | a | 63.53 | a | 71.24 | 80.98 | 79.34 | b | 74.94 | 70.67 | a | 64.92 | 51.37 | 47.23 | c | 63.51 | ||||||||
1962 | 46.06 | 51.70 | a | 49.63 | a | 67.03 | 68.23 | 77.03 | 78.52 | 81.48 | a | 75.23 | 67.74 | 59.05 | 50.18 | 64.32 | ||||||||||
1963 | 45.55 | 55.02 | 54.81 | 60.02 | 72.95 | a | 76.43 | 81.56 | 74.19 | 74.88 | 68.93 | c | 55.33 | 49.68 | 64.11 | |||||||||||
1964 | 46.82 | i | 45.02 | 50.89 | 58.55 | 69.50 | 76.83 | a | 79.74 | 74.23 | 70.32 | 68.40 | 52.71 | a | 50.74 | 63.36 | a | |||||||||
1965 | 50.87 | 49.16 | 52.16 | 61.50 | 66.92 | 72.88 | 78.55 | 78.89 | 72.25 | 71.08 | 60.23 | 49.00 | 63.62 | |||||||||||||
1966 | 45.39 | 45.59 | 57.97 | 63.90 | 72.48 | 78.32 | 80.16 | 76.19 | 72.68 | 65.50 | 59.12 | 50.56 | 63.99 | |||||||||||||
1967 | 50.53 | 54.07 | a | 59.21 | 58.73 | 68.76 | 74.97 | a | 77.32 | 76.74 | b | 73.95 | 67.69 | 59.53 | 45.26 | 63.90 | ||||||||||
1968 | 48.56 | 54.24 | 53.76 | 57.43 | 67.98 | 79.07 | 77.23 | a | 73.06 | 74.15 | 67.69 | 53.63 | 49.38 | j | 64.26 | a | ||||||||||
1969 | 50.57 | h | 49.82 | f | 54.00 | h | 64.07 | g | 68.36 | f | 75.73 | 78.66 | 78.50 | 75.87 | c | 62.58 | 54.20 | 49.60 | f | 70.92 | f | |||||
1970 | 48.80 | c | 52.66 | 50.65 | 57.15 | 72.02 | 79.75 | 80.84 | 76.69 | 71.25 | 61.42 | ----- | z | 52.45 | j | 65.12 | b | |||||||||
1971 | 49.91 | c | 50.14 | 57.60 | 60.15 | 66.50 | 77.07 | 80.42 | 73.74 | f | 72.65 | 59.97 | 53.05 | 42.90 | f | 62.75 | b | |||||||||
1972 | 49.50 | b | 54.86 | a | 63.83 | b | 63.27 | 68.85 | 75.24 | a | 79.89 | 76.45 | i | 72.97 | 64.00 | e | 49.76 | a | 46.65 | k | 64.22 | b | ||||
1973 | 46.05 | b | 48.67 | a | 47.81 | 58.73 | f | 70.29 | 78.25 | b | 77.84 | 78.79 | 78.15 | j | 68.36 | f | 56.97 | a | 52.71 | g | 63.08 | d | ||||
1974 | 47.63 | 50.02 | 56.94 | 63.42 | 70.02 | a | 83.12 | 75.76 | 75.77 | 73.30 | 66.10 | 54.50 | 45.68 | 63.52 | ||||||||||||
1975 | 49.48 | 48.59 | 53.05 | 56.80 | 67.87 | 77.52 | 78.13 | 79.85 | 74.43 | 67.94 | 58.23 | ----- | z | 64.72 | a | |||||||||||
1976 | 50.26 | 53.62 | 54.15 | a | 59.60 | f | ----- | z | 78.40 | j | 75.72 | b | 75.53 | b | 69.85 | g | 61.74 | d | 53.59 | c | 46.52 | a | 58.89 | d | ||
1977 | 44.81 | 52.79 | 49.61 | 59.38 | 64.18 | 77.55 | 78.90 | f | 77.53 | b | 74.07 | 67.23 | 56.82 | 53.19 | 61.56 | a | ||||||||||
1978 | 49.48 | i | 49.79 | 58.19 | 61.27 | 68.56 | 81.62 | 82.16 | 78.34 | 73.48 | 68.39 | 54.27 | 44.97 | 65.55 | a | |||||||||||
1979 | 43.79 | 49.91 | 53.32 | 60.61 | u | 68.02 | a | 78.83 | 81.81 | 71.13 | p | 75.05 | j | 70.02 | 51.88 | 52.50 | 61.12 | c | ||||||||
1980 | 49.88 | a | 55.29 | 53.32 | a | 61.00 | 65.87 | a | 80.92 | 82.92 | l | 78.59 | c | 73.26 | e | ----- | z | 54.48 | 53.44 | d | 62.61 | b | ||||
1981 | 50.64 | j | 56.76 | c | 54.35 | 66.02 | f | 68.60 | 81.15 | c | 79.71 | 79.38 | s | ----- | z | 61.80 | k | 61.71 | k | 53.78 | o | 68.11 | g | |||
1982 | 50.45 | l | ----- | z | ----- | z | ----- | z | 61.21 | q | 76.67 | o | 77.40 | f | 75.93 | d | 74.22 | g | 65.96 | r | 50.50 | y | ----- | z | 75.93 | k |
1983 | 47.83 | e | 47.44 | k | 50.64 | b | 54.08 | 68.68 | 76.04 | e | 79.23 | 75.57 | a | 74.30 | 63.59 | c | 52.72 | a | 49.95 | 62.97 | a | |||||
1984 | 47.34 | 51.00 | 57.72 | b | 60.76 | a | 75.28 | a | 77.15 | 75.55 | 73.79 | 73.78 | 60.85 | 53.74 | a | 46.82 | 62.82 | |||||||||
1985 | 45.03 | a | 48.41 | a | 55.55 | c | 64.18 | 71.21 | 80.48 | a | 79.82 | 77.56 | 71.26 | a | 65.64 | c | 54.36 | a | 51.62 | a | 63.76 | |||||
1986 | 55.02 | b | 52.89 | 60.22 | a | 64.83 | a | 72.58 | a | 79.78 | 76.94 | 77.74 | 73.13 | 65.10 | 56.66 | b | 48.18 | a | 65.26 | |||||||
1987 | 47.52 | b | 49.38 | 53.05 | c | 64.91 | a | 67.53 | a | 80.02 | 79.87 | 75.97 | 73.29 | b | 70.73 | 54.87 | 46.31 | 63.62 | ||||||||
1988 | 48.02 | 54.07 | 56.21 | 60.72 | 69.68 | 80.24 | a | 79.29 | 75.82 | 74.47 | a | 69.78 | a | 55.42 | 47.87 | 64.30 | ||||||||||
1989 | 46.35 | 54.18 | 61.08 | 69.67 | 72.32 | 80.05 | 82.81 | 77.24 | 77.20 | 66.61 | 57.73 | 50.11 | 66.28 | |||||||||||||
1990 | 48.18 | 46.80 | 56.85 | 63.88 | 68.66 | 81.52 | 75.36 | j | 72.37 | 72.72 | 66.16 | 56.15 | 46.66 | 61.81 | a | |||||||||||
1991 | 46.45 | 54.91 | 49.82 | 60.02 | 67.44 | 74.59 | a | 78.70 | a | 76.42 | 73.24 | g | 69.85 | 55.24 | a | 47.42 | a | 61.90 | a | |||||||
1992 | 45.63 | 50.98 | a | 53.68 | 64.72 | 69.55 | 78.27 | 78.90 | 77.12 | a | 76.37 | 69.66 | 51.88 | 47.02 | 63.65 | |||||||||||
1993 | 49.18 | 48.74 | a | 55.94 | 63.57 | 71.50 | a | 79.12 | 78.26 | 77.15 | 74.33 | 66.78 | a | 53.85 | 49.92 | 64.03 | ||||||||||
1994 | 51.30 | a | 49.70 | 56.81 | 63.66 | b | 69.92 | 83.14 | a | 82.27 | 81.27 | c | 75.86 | a | 64.55 | 52.57 | 48.95 | 65.00 | ||||||||
1995 | 48.03 | 55.95 | 56.42 | 59.90 | 66.79 | 77.47 | 82.18 | 80.42 | 77.48 | 70.56 | 60.62 | 51.85 | 65.64 | |||||||||||||
1996 | 52.21 | 55.41 | 57.47 | a | 65.57 | b | 74.97 | 82.30 | 81.17 | g | 78.52 | 71.48 | b | 67.26 | b | 58.24 | a | 51.34 | 64.98 | a | ||||||
1997 | 48.65 | a | 51.02 | 61.56 | 61.65 | 74.06 | 77.72 | 81.63 | 78.39 | 76.95 | b | 65.74 | 57.77 | 44.82 | 65.00 | |||||||||||
1998 | 50.00 | 46.20 | a | 53.87 | 57.67 | a | 68.47 | a | 77.37 | 80.78 | d | 79.94 | 76.77 | 67.85 | 58.67 | a | 49.24 | 63.90 | ||||||||
1999 | 52.71 | 55.09 | 58.74 | 59.12 | 70.00 | 77.88 | 76.98 | b | 76.60 | a | 75.52 | 71.35 | 63.32 | 49.48 | 65.57 | |||||||||||
2000 | 54.11 | 55.69 | 56.25 | a | 67.47 | a | 75.81 | 78.50 | a | 79.65 | 76.13 | 77.48 | 63.58 | 48.52 | 53.11 | 65.52 | ||||||||||
2001 | 45.29 | b | 48.86 | 56.27 | a | 60.41 | b | 72.45 | c | 78.98 | 76.78 | a | 78.43 | a | 78.17 | a | 68.40 | 59.98 | a | 47.53 | b | 64.30 | ||||
2002 | 49.78 | b | 53.55 | 56.05 | a | 65.64 | a | 71.75 | a | 82.87 | 80.48 | f | 78.90 | 76.22 | 64.44 | 58.98 | 47.19 | b | 64.12 | a | ||||||
2003 | 55.77 | a | 50.62 | 55.52 | c | 61.93 | a | 73.33 | a | 80.23 | 82.65 | d | 77.60 | f | 76.78 | 71.06 | 56.24 | a | 51.73 | a | 65.08 | a | ||||
2004 | 48.60 | f | 47.21 | 62.76 | 61.02 | 72.55 | a | 78.90 | 78.35 | 77.17 | a | 74.83 | 65.37 | 52.36 | b | 49.69 | 65.47 | a | ||||||||
2005 | 51.00 | 50.06 | a | 54.06 | 63.23 | b | 72.30 | a | 78.95 | 82.66 | b | 75.52 | e | 77.21 | b | ----- | z | ----- | z | ----- | z | 67.22 | c | |||
2006 | 53.79 | ----- | z | 53.80 | a | ----- | z | 74.52 | d | 81.64 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.70 | i | |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.88 | m | 68.33 | e | 62.41 | b | 47.40 | j | 65.37 | j |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.13 | ----- | z | 59.13 | k | |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | 73.92 | ----- | z | 80.03 | ----- | z | 76.53 | a | 64.89 | ----- | z | ----- | z | 73.84 | h | |||
2010 | 50.40 | ----- | z | 53.87 | 59.50 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.59 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.09 | 51.17 | 55.30 | 61.89 | 70.07 | 78.95 | 79.42 | 77.01 | 74.75 | 67.15 | 56.06 | 49.37 | 64.30 | |||||||||||||
S.D. | 3.03 | 3.41 | 3.52 | 3.11 | 2.76 | 2.27 | 1.97 | 2.17 | 2.14 | 3.12 | 3.30 | 2.72 | 0.85 | |||||||||||||
SKEW | 0.17 | 0.06 | 0.04 | 0.11 | 0.10 | -0.22 | -0.08 | -0.22 | -0.05 | -0.05 | 0.11 | 0.49 | 0.67 | |||||||||||||
MAX | 55.77 | 57.80 | 63.83 | 69.67 | 75.81 | 83.14 | 82.81 | 81.48 | 78.93 | 74.52 | 63.32 | 57.13 | 66.28 | |||||||||||||
MIN | 43.76 | 45.02 | 47.66 | 54.08 | 64.18 | 72.88 | 75.55 | 72.37 | 70.32 | 59.97 | 48.52 | 44.82 | 62.82 | |||||||||||||
YRS | 50 | 51 | 52 | 49 | 53 | 54 | 51 | 50 | 49 | 52 | 52 | 43 | 25 |