YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.69 | 70.82 | 63.13 | 59.25 | 53.74 | 64.93 | g | |||||
1940 | 50.06 | 49.21 | 55.00 | a | 57.25 | 65.90 | 71.92 | 74.02 | 74.97 | 68.20 | ----- | z | ----- | z | 51.95 | 61.85 | b | |||||||||
1941 | 47.41 | d | 50.29 | 52.10 | 52.13 | 63.82 | 65.85 | 75.94 | 71.66 | 65.70 | 58.43 | b | 56.36 | a | 47.37 | 58.92 | ||||||||||
1942 | 48.89 | 45.43 | 49.81 | 53.18 | 59.87 | 68.32 | 78.06 | 75.45 | 68.28 | 62.35 | 56.22 | 50.16 | 59.67 | |||||||||||||
1943 | 48.37 | 51.21 | 52.02 | 56.67 | 63.23 | 65.30 | 74.48 | 75.16 | 74.42 | 63.89 | 56.68 | 47.06 | 60.71 | |||||||||||||
1944 | 47.02 | 43.62 | 50.48 | 52.60 | 60.44 | 61.98 | 70.76 | 75.82 | 70.75 | 63.19 | 50.03 | 50.24 | 58.08 | |||||||||||||
1945 | 47.56 | 47.16 | 45.84 | 53.68 | 59.16 | 65.98 | 77.39 | 75.76 | 71.80 | 62.89 | 51.71 | a | 47.26 | 58.85 | ||||||||||||
1946 | 47.58 | 46.54 | 50.13 | 59.22 | 59.76 | 70.35 | 76.34 | 76.84 | 74.17 | 58.26 | 50.73 | 50.92 | 60.07 | |||||||||||||
1947 | 46.97 | 52.54 | 53.06 | 58.08 | 63.97 | 67.65 | 77.13 | 73.50 | 74.97 | 62.71 | 51.22 | 47.23 | 60.75 | |||||||||||||
1948 | 51.55 | 46.31 | 47.45 | 54.83 | 60.31 | 66.77 | 74.08 | 74.71 | 72.97 | 62.77 | 53.88 | 44.73 | 59.20 | |||||||||||||
1949 | 35.53 | 43.75 | 47.89 | 58.63 | 60.18 | 69.92 | 74.55 | 73.65 | 74.32 | 60.48 | 62.95 | 47.76 | 59.13 | |||||||||||||
1950 | 43.02 | 51.68 | 52.06 | 58.47 | 59.34 | 66.67 | 75.66 | 75.47 | 68.98 | 67.50 | 59.47 | 55.84 | 61.18 | |||||||||||||
1951 | 46.85 | 47.11 | 51.74 | 55.12 | 61.58 | 66.45 | 76.37 | 74.56 | 74.28 | 62.89 | 53.73 | 44.84 | 59.63 | |||||||||||||
1952 | 43.60 | 47.95 | 45.45 | 54.47 | 64.85 | 64.27 | 76.66 | 77.44 | 73.52 | 68.55 | 49.88 | 47.00 | 59.47 | |||||||||||||
1953 | 52.71 | 47.38 | 50.65 | 52.65 | 56.06 | 65.98 | 78.69 | 76.58 | f | 70.42 | 61.66 | 56.70 | 50.34 | 58.48 | a | |||||||||||
1954 | 47.90 | 56.05 | 48.27 | 58.65 | 62.45 | 67.03 | 77.11 | 69.26 | 69.97 | 62.55 | 57.82 | 48.55 | 60.47 | |||||||||||||
1955 | 43.15 | 45.89 | 52.40 | a | 53.05 | 58.66 | 65.65 | 71.39 | 77.32 | 72.43 | 64.15 | 54.48 | 49.05 | 58.97 | ||||||||||||
1956 | 49.83 | a | 43.84 | 52.87 | a | 54.23 | 60.98 | 69.00 | 73.08 | 70.48 | 74.50 | 60.39 | 58.28 | 53.03 | 60.04 | |||||||||||
1957 | 45.37 | 54.07 | 52.45 | 55.29 | a | 58.16 | 72.48 | 77.55 | 76.21 | 71.62 | 59.79 | 50.37 | 52.37 | 60.48 | ||||||||||||
1958 | 49.63 | 50.88 | 46.44 | 55.12 | 64.69 | 68.63 | 74.03 | 78.34 | 73.98 | 68.68 | 55.75 | 57.34 | 61.96 | |||||||||||||
1959 | 51.24 | 46.57 | 55.32 | 60.57 | a | 59.63 | 71.57 | 79.69 | 74.87 | a | 69.03 | 65.35 | 58.35 | 51.00 | 61.93 | |||||||||||
1960 | 43.69 | 46.26 | 54.73 | 57.48 | 61.56 | 71.75 | 78.32 | 75.60 | 74.68 | 62.69 | 52.32 | 48.62 | a | 60.64 | ||||||||||||
1961 | 53.23 | 50.68 | 51.16 | b | 58.35 | 58.84 | 72.73 | 77.19 | 75.89 | 67.98 | a | 61.90 | 51.43 | a | 47.63 | 60.58 | ||||||||||
1962 | ----- | z | ----- | z | 49.88 | n | 60.58 | 59.19 | 68.09 | a | 74.95 | 79.52 | c | 74.95 | a | 65.45 | a | 57.10 | 53.58 | a | 65.93 | c | ||||
1963 | 47.34 | 57.23 | 51.65 | a | 52.93 | 62.44 | 66.55 | 75.48 | 75.97 | 75.37 | 65.08 | 55.22 | 51.13 | 61.37 | ||||||||||||
1964 | 47.10 | a | 49.55 | a | 49.82 | a | 55.22 | a | 60.15 | a | 68.56 | c | 78.18 | 77.66 | 71.60 | e | 64.29 | s | 52.69 | a | 50.00 | a | 60.05 | a | ||
1965 | 50.76 | 50.59 | 51.00 | 55.32 | 61.22 | a | 63.88 | ----- | z | 77.71 | 67.53 | 69.31 | 55.40 | a | 49.13 | a | 59.26 | a | ||||||||
1966 | 47.40 | b | 47.96 | b | 55.23 | 61.27 | b | 64.70 | c | 71.57 | a | 76.89 | 79.10 | a | 72.30 | t | 65.85 | 55.98 | a | 51.12 | b | 61.55 | a | |||
1967 | 51.03 | a | 53.24 | a | 53.33 | a | 48.26 | a | 59.50 | m | 65.70 | 80.15 | a | 82.52 | a | 73.10 | a | 69.69 | b | 59.35 | 47.40 | b | 62.16 | a | ||
1968 | 49.68 | a | 56.33 | c | 54.19 | 57.38 | a | 63.29 | 70.77 | 77.74 | 74.77 | 73.85 | 65.58 | 56.52 | 49.18 | i | 63.65 | a | ||||||||
1969 | 51.48 | 46.39 | 51.73 | 55.62 | j | 65.07 | a | 65.87 | 77.31 | 81.52 | 76.97 | 61.76 | 58.12 | 51.40 | 62.51 | a | ||||||||||
1970 | 50.26 | 54.20 | 53.83 | a | 54.65 | 65.23 | 71.10 | 80.17 | a | 80.58 | 73.30 | 64.48 | 56.06 | l | 48.15 | 63.27 | a | |||||||||
1971 | 50.18 | a | 52.38 | 54.81 | 55.33 | 59.24 | j | 74.24 | m | 78.11 | 80.16 | 74.60 | 61.84 | 55.28 | 44.63 | 60.73 | b | |||||||||
1972 | 49.53 | a | 54.62 | a | 61.63 | 59.55 | a | 65.10 | a | 71.93 | 79.50 | 76.76 | 70.98 | a | 57.70 | u | 53.05 | 48.29 | 62.81 | a | ||||||
1973 | 46.21 | 49.66 | 46.97 | 55.10 | f | 67.68 | i | 73.08 | 75.97 | 76.82 | 69.73 | 65.65 | a | 51.91 | h | 52.26 | 61.82 | c | ||||||||
1974 | 47.26 | 51.77 | 53.24 | 57.71 | a | 63.08 | s | 72.63 | 76.42 | a | 75.32 | 75.95 | 63.73 | a | 57.02 | 48.02 | 61.73 | a | ||||||||
1975 | 51.25 | a | 49.84 | 50.68 | a | 51.63 | 59.67 | v | 69.18 | 76.84 | 74.39 | 73.71 | a | 62.85 | 56.00 | 51.89 | 60.75 | a | ||||||||
1976 | 53.02 | a | 51.91 | 51.87 | a | 58.74 | m | 64.95 | a | 71.30 | 75.98 | 73.32 | 69.70 | 63.93 | a | 59.28 | 51.73 | 62.45 | a | |||||||
1977 | 50.10 | a | 54.77 | 49.19 | 59.32 | m | 57.37 | 71.60 | 78.02 | 77.18 | 73.29 | k | 67.30 | a | 59.93 | a | 54.32 | 61.98 | b | |||||||
1978 | 49.78 | a | 51.22 | a | 55.58 | 54.33 | i | 64.60 | e | 73.10 | a | 78.08 | 76.21 | 69.61 | h | ----- | z | 53.20 | 47.45 | a | 61.03 | c | ||||
1979 | 44.71 | 49.44 | b | 53.37 | 58.40 | 64.10 | a | 72.72 | 77.11 | 74.68 | 77.00 | 64.27 | 55.30 | ----- | z | 62.83 | a | |||||||||
1980 | 51.84 | 54.17 | 51.73 | a | 58.91 | a | 58.27 | 69.18 | 80.23 | 76.23 | ----- | z | 68.37 | 58.90 | a | 57.15 | a | 62.27 | a | |||||||
1981 | 53.47 | a | 55.09 | 52.21 | 60.75 | 64.84 | 78.20 | 78.58 | 80.50 | 74.65 | 61.34 | 58.40 | 54.68 | 64.39 | ||||||||||||
1982 | 47.87 | 52.73 | 51.15 | 56.82 | 63.03 | 65.85 | 76.66 | 78.61 | 72.57 | 64.08 | 53.15 | 48.00 | 60.88 | |||||||||||||
1983 | 53.00 | 51.48 | b | 52.60 | a | 53.12 | 64.55 | a | 68.67 | a | 76.67 | b | 78.33 | b | 76.91 | a | 66.35 | 55.10 | 51.19 | 62.33 | ||||||
1984 | 54.09 | b | 53.30 | b | 57.27 | 58.75 | 71.02 | 71.45 | 79.50 | 79.29 | 78.15 | 62.40 | a | 53.30 | 47.21 | 63.81 | ||||||||||
1985 | 49.00 | a | 51.72 | a | 51.19 | 61.58 | 64.87 | a | 73.89 | b | 79.73 | a | 76.82 | 68.17 | a | 64.81 | 52.80 | b | 53.43 | a | 62.34 | |||||
1986 | 57.12 | a | 52.96 | 56.60 | a | 59.30 | b | 66.32 | 74.13 | 75.69 | 80.95 | c | 66.35 | 62.87 | a | 58.57 | a | 51.36 | b | 63.52 | ||||||
1987 | 48.82 | a | 50.96 | a | 52.95 | b | 64.03 | 66.13 | 72.93 | 72.40 | 76.37 | 72.98 | c | 67.23 | a | 55.00 | a | 45.24 | b | 62.09 | ||||||
1988 | 50.90 | 56.00 | a | 57.88 | a | 59.45 | 65.27 | 70.64 | a | 79.18 | 76.90 | 73.18 | 69.87 | 56.73 | b | 50.40 | a | 63.87 | ||||||||
1989 | 49.89 | 50.71 | b | 57.84 | 64.38 | 64.73 | a | 71.95 | 79.82 | 75.10 | a | 73.90 | 65.34 | 59.93 | 55.45 | 64.09 | ||||||||||
1990 | 51.12 | a | 49.61 | a | 56.48 | c | 60.38 | b | 63.76 | 74.77 | 79.52 | 76.73 | 74.35 | 69.22 | a | 58.62 | 49.03 | 63.63 | ||||||||
1991 | 51.42 | 58.87 | a | 49.05 | 58.72 | a | 61.48 | a | 68.59 | b | 76.18 | 76.06 | m | 76.25 | 69.50 | 60.29 | a | 51.59 | b | 61.99 | a | |||||
1992 | 52.27 | a | 53.70 | a | 53.19 | 63.03 | 68.03 | 70.28 | 76.63 | 79.98 | a | 75.55 | 67.72 | a | 57.23 | 46.87 | d | 63.71 | ||||||||
1993 | 47.83 | b | 49.64 | 58.70 | a | 62.03 | 67.02 | a | 71.80 | 72.26 | 76.34 | 74.43 | a | 66.92 | a | 56.66 | a | 51.65 | a | 62.94 | ||||||
1994 | 54.77 | 49.93 | 56.97 | 59.07 | a | 62.66 | 75.55 | a | 77.55 | a | 79.65 | 73.48 | e | 62.41 | b | 50.42 | 51.19 | 62.80 | ||||||||
1995 | 49.17 | a | 58.65 | a | 54.69 | 56.70 | 58.79 | 68.62 | 77.27 | a | 80.50 | 76.57 | a | 68.14 | b | 62.87 | 53.66 | 63.80 | ||||||||
1996 | 53.44 | 54.25 | a | 55.95 | 62.85 | 66.50 | 73.02 | 81.21 | b | 80.87 | a | 73.39 | b | 65.29 | 58.71 | b | 52.94 | 64.87 | ||||||||
1997 | 51.05 | b | 52.93 | 60.56 | 59.83 | a | 71.50 | 70.00 | 75.21 | b | 79.42 | 76.32 | 65.05 | 58.07 | 50.08 | 64.17 | ||||||||||
1998 | 51.53 | 47.86 | 54.00 | 55.02 | 57.41 | b | 65.97 | 78.77 | 82.68 | 71.65 | 63.32 | a | 56.17 | 50.92 | a | 61.27 | ||||||||||
1999 | 53.66 | 52.70 | 53.55 | 54.08 | 62.92 | 70.68 | b | 76.42 | 77.13 | 74.57 | 70.74 | 61.35 | 54.44 | 63.52 | ||||||||||||
2000 | 54.87 | 52.67 | 55.16 | 61.90 | 68.81 | 74.12 | 76.18 | 78.60 | 74.27 | 63.40 | 54.40 | 56.69 | 64.26 | |||||||||||||
2001 | 49.10 | 49.64 | 56.77 | 55.92 | 69.40 | 74.97 | 75.77 | 80.13 | ----- | z | ----- | z | ----- | z | ----- | z | 63.96 | d | ||||||||
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.73 | q | 51.06 | m | ----- | z |
2004 | 50.17 | j | 48.05 | j | 62.12 | f | 59.10 | d | 63.96 | d | 68.60 | f | 75.75 | c | 74.29 | b | 70.52 | c | 61.15 | h | 50.16 | a | 51.62 | e | 63.63 | e |
2005 | 51.65 | n | ----- | z | ----- | z | 56.42 | x | 64.07 | p | 68.47 | n | 80.38 | w | 79.72 | m | 67.05 | s | 65.41 | o | 64.29 | r | 54.75 | g | ----- | z |
2006 | 52.55 | l | 55.59 | f | 48.57 | i | 56.05 | j | 67.67 | g | 80.72 | j | 84.30 | i | 79.45 | j | 75.52 | g | 62.68 | l | 61.02 | i | 51.05 | i | ----- | z |
2007 | 49.35 | h | 51.88 | h | 58.25 | g | 60.89 | p | 63.82 | i | 74.00 | h | 81.56 | g | 81.27 | e | 71.81 | l | 66.66 | f | 63.17 | j | 48.82 | i | 81.27 | k |
2008 | 48.67 | h | 52.33 | 57.55 | 61.29 | a | 63.10 | 76.14 | b | 81.15 | 81.35 | 78.12 | 70.98 | a | 63.74 | c | 49.84 | 66.87 | a | |||||||
2009 | 57.05 | 51.29 | 55.40 | 58.06 | c | 70.95 | 67.65 | 81.60 | a | 78.97 | 78.82 | 63.42 | a | 59.97 | 49.40 | 64.38 | ||||||||||
2010 | 52.15 | 51.93 | 55.15 | 55.57 | 61.55 | 71.00 | 77.50 | 78.91 | c | ----- | z | ----- | z | ----- | z | ----- | z | 62.97 | d | |||||||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.58 | 50.95 | 52.97 | 57.35 | 63.08 | 69.91 | 76.97 | 77.13 | 72.97 | 64.66 | 56.09 | 50.45 | 61.68 | |||||||||||||
S.D. | 3.60 | 3.51 | 3.41 | 3.39 | 3.51 | 3.35 | 2.31 | 2.77 | 3.01 | 3.01 | 3.39 | 3.06 | 1.94 | |||||||||||||
SKEW | -0.85 | -0.05 | 0.03 | -0.11 | 0.32 | -0.01 | -0.39 | -0.23 | -0.41 | 0.23 | -0.01 | 0.23 | -0.02 | |||||||||||||
MAX | 57.12 | 58.87 | 61.63 | 64.38 | 71.50 | 78.20 | 81.60 | 82.68 | 78.82 | 70.98 | 63.74 | 57.34 | 64.87 | |||||||||||||
MIN | 35.53 | 43.62 | 45.45 | 48.26 | 56.06 | 61.98 | 70.76 | 69.26 | 65.70 | 58.26 | 49.88 | 44.63 | 58.08 | |||||||||||||
YRS | 63 | 64 | 64 | 61 | 61 | 64 | 65 | 66 | 61 | 60 | 62 | 63 | 41 |