YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | 50.39 | m | 52.57 | 57.35 | 64.87 | 72.00 | 80.70 | 84.39 | 83.77 | 76.43 | 74.06 | 59.33 | 53.27 | a | 68.98 | a | ||||||||||
1988 | 51.19 | 57.76 | 62.90 | 70.25 | b | 76.86 | b | 84.67 | 83.30 | a | 83.33 | a | 79.13 | 72.97 | 64.53 | 52.16 | 69.92 | |||||||||
1989 | 55.48 | 57.07 | a | 67.52 | 75.33 | 82.90 | b | 87.40 | 86.65 | 83.42 | 77.07 | 73.32 | 62.83 | 51.72 | b | 71.73 | ||||||||||
1990 | 56.23 | a | 57.18 | 61.97 | 69.40 | 77.03 | 92.83 | a | 81.14 | b | 78.45 | 75.37 | 72.42 | ----- | z | 57.24 | b | 70.84 | a | |||||||
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.31 | a | 79.70 | a | 79.48 | 73.25 | b | 73.61 | 56.61 | b | 52.13 | a | 71.59 | e | ||
1992 | 45.97 | a | 53.90 | 63.07 | a | 70.97 | 72.03 | 83.52 | a | 87.76 | b | 83.90 | a | 81.52 | a | 76.37 | d | 56.29 | b | 57.04 | e | 69.36 | ||||
1993 | 52.55 | b | 54.26 | e | 62.97 | 73.00 | b | 79.83 | b | 89.57 | 86.61 | 87.14 | b | 80.17 | a | 71.73 | a | 60.79 | b | 56.27 | a | 71.24 | ||||
1994 | 56.87 | 58.22 | a | 63.97 | 72.40 | 77.45 | b | 92.52 | c | 90.48 | 88.03 | 80.33 | 72.79 | b | 62.44 | c | 57.59 | b | 72.76 | |||||||
1995 | 51.93 | b | 60.75 | 62.83 | a | 69.90 | 77.13 | 82.90 | 87.47 | a | 86.40 | a | 78.27 | 75.19 | 65.38 | a | 54.23 | a | 71.03 | |||||||
1996 | 55.60 | a | 59.14 | a | 59.82 | c | 68.80 | 85.58 | 87.17 | 84.50 | a | 81.35 | 74.77 | 70.13 | a | 61.93 | b | 55.47 | a | 70.36 | ||||||
1997 | 49.20 | a | 52.21 | 64.67 | a | 64.13 | 76.80 | a | 84.17 | a | 87.84 | 85.07 | c | 82.23 | 69.19 | 58.67 | 47.83 | a | 68.50 | |||||||
1998 | 56.23 | a | 52.93 | 59.73 | a | 66.63 | 82.50 | a | 90.31 | a | 89.42 | 82.73 | a | 82.79 | a | 72.07 | c | 63.83 | 54.68 | 71.16 | ||||||
1999 | 58.17 | a | 62.43 | 64.23 | a | 69.00 | a | 77.52 | 82.93 | a | 83.00 | 86.16 | 78.76 | a | 71.67 | a | 66.31 | a | 51.53 | a | 70.98 | |||||
2000 | 58.13 | 61.45 | 64.81 | 73.55 | a | 83.79 | c | 84.46 | d | 89.58 | 87.35 | 84.57 | g | 68.50 | a | 53.60 | 52.55 | 70.71 | a | |||||||
2001 | 50.17 | a | 59.04 | e | 58.32 | 72.92 | f | 81.03 | 88.69 | a | 89.60 | a | 86.00 | 80.70 | 73.23 | a | 59.83 | 53.66 | b | 70.93 | a | |||||
2002 | 58.37 | a | 52.35 | b | 61.42 | 74.54 | b | 80.90 | 90.57 | 85.90 | a | 87.87 | 81.13 | 68.42 | 58.48 | a | 51.38 | b | 70.94 | |||||||
2003 | 58.73 | a | 56.36 | f | 61.00 | 71.52 | a | 79.92 | f | 85.77 | 88.39 | 87.23 | 79.63 | c | 73.45 | 61.90 | 56.13 | 72.37 | b | |||||||
2004 | 53.26 | 51.48 | 62.48 | 65.62 | a | 80.07 | a | 86.00 | a | 86.07 | a | 80.29 | 77.30 | 68.26 | 55.47 | 51.42 | 68.14 | |||||||||
2005 | 56.42 | 49.86 | 58.68 | 69.50 | 76.68 | 87.80 | 88.60 | a | 82.53 | a | 83.93 | 69.65 | 64.17 | 56.90 | 70.39 | |||||||||||
2006 | 57.61 | 57.79 | 62.81 | 74.90 | 83.55 | 87.04 | b | 85.71 | 79.23 | 73.07 | 69.90 | 64.97 | 51.65 | 70.68 | ||||||||||||
2007 | 47.17 | b | 55.70 | a | 66.48 | 69.36 | b | 72.29 | 84.56 | e | 82.35 | 83.00 | b | 79.96 | c | 74.59 | b | 62.89 | c | 54.75 | g | 70.76 | a | |||
2008 | 51.27 | e | 58.43 | a | 62.93 | b | 69.20 | 78.88 | f | 89.33 | f | 79.86 | j | 81.15 | d | 74.15 | d | 72.10 | j | 63.67 | l | 57.29 | g | 66.19 | f | |
2009 | 59.69 | e | 61.33 | j | 66.67 | p | 72.17 | f | 85.70 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.69 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.30 | 56.23 | 62.38 | 70.14 | 78.73 | 86.66 | 86.12 | 83.81 | 78.57 | 71.98 | 61.01 | 53.74 | 70.51 | |||||||||||||
S.D. | 4.00 | 3.60 | 2.59 | 3.23 | 4.03 | 3.24 | 2.98 | 2.98 | 3.16 | 2.35 | 3.61 | 2.62 | 1.23 | |||||||||||||
SKEW | -0.57 | -0.05 | -0.12 | -0.15 | -0.17 | 0.28 | -0.51 | -0.20 | -0.26 | -0.12 | -0.46 | -0.20 | -0.40 | |||||||||||||
MAX | 59.69 | 62.43 | 67.52 | 75.33 | 85.58 | 92.83 | 90.48 | 88.03 | 83.93 | 76.37 | 66.31 | 57.59 | 72.76 | |||||||||||||
MIN | 45.97 | 49.86 | 57.35 | 64.13 | 72.00 | 80.70 | 79.70 | 78.45 | 73.07 | 68.26 | 53.60 | 47.83 | 68.14 | |||||||||||||
YRS | 21 | 20 | 21 | 20 | 19 | 21 | 21 | 22 | 21 | 21 | 20 | 20 | 14 |