YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.47 | 72.19 | 74.77 | a | 71.10 | 59.52 | 32.90 | 24.63 | a | 58.65 | e | |||||
1993 | 21.94 | 20.29 | 35.63 | a | 52.47 | 66.65 | 71.80 | 77.35 | 79.83 | a | 67.32 | b | 57.77 | 36.97 | a | 27.19 | 51.27 | |||||||||
1994 | 11.26 | 19.54 | 44.00 | 56.80 | 73.52 | 77.97 | a | 79.03 | a | 76.55 | 73.77 | 60.61 | 43.50 | 28.48 | 53.75 | |||||||||||
1995 | 23.68 | 30.11 | 40.42 | 48.17 | 63.81 | 78.45 | a | 84.00 | b | 82.23 | 69.83 | 54.71 | 35.43 | 27.81 | 53.22 | |||||||||||
1996 | 18.60 | a | 29.62 | 34.71 | 54.30 | 62.48 | 78.48 | a | 79.58 | 80.03 | 68.57 | 59.81 | 29.23 | 16.03 | a | 50.95 | ||||||||||
1997 | 15.81 | 26.57 | 35.70 | a | 50.77 | 65.06 | 81.63 | 81.97 | 80.10 | 75.50 | 62.45 | 36.07 | 33.03 | 53.72 | ||||||||||||
1998 | 26.37 | a | 37.89 | 35.13 | 59.87 | 74.52 | 74.80 | 83.03 | 81.94 | 79.03 | 60.61 | 41.87 | 35.32 | 57.53 | ||||||||||||
1999 | 21.39 | 38.89 | 44.68 | 56.60 | 70.33 | a | 77.64 | b | 86.39 | 82.77 | 71.97 | 61.42 | 54.70 | 36.23 | 58.58 | |||||||||||
2000 | 27.23 | 40.31 | 53.52 | 57.37 | 71.84 | 77.70 | 82.90 | 82.45 | 75.50 | 61.97 | 32.37 | 13.74 | 56.41 | |||||||||||||
2001 | 26.71 | 18.96 | 33.23 | 57.63 | 70.16 | 79.17 | 85.29 | 83.13 | 72.03 | 59.32 | 53.63 | 29.94 | 55.77 | |||||||||||||
2002 | 30.23 | 38.82 | 29.68 | 57.87 | 66.03 | 81.33 | 86.97 | 78.94 | 74.27 | 47.97 | 42.83 | 34.26 | 55.77 | |||||||||||||
2003 | 25.50 | a | 27.07 | 43.90 | 60.03 | 67.13 | 75.63 | 83.43 | a | 83.73 | a | 72.30 | 62.48 | 36.50 | 30.65 | 55.70 | ||||||||||
2004 | 21.94 | 26.38 | 46.71 | 63.70 | 69.48 | 75.97 | a | 79.77 | 76.71 | 74.93 | 60.00 | 46.60 | 33.30 | a | 56.29 | |||||||||||
2005 | 22.68 | 37.54 | 45.13 | 63.73 | 67.90 | 79.50 | 84.87 | 80.84 | 79.20 | 61.03 | 45.23 | 24.03 | 57.64 | |||||||||||||
2006 | 34.42 | 31.04 | 39.77 | 62.20 | 72.16 | 79.83 | 88.03 | 80.61 | 67.03 | 56.55 | 44.77 | 35.45 | 57.66 | |||||||||||||
2007 | 24.71 | 19.14 | 45.64 | c | 54.53 | 72.94 | 80.00 | 85.68 | 79.87 | 74.93 | 63.20 | a | 43.63 | 24.81 | 55.76 | |||||||||||
2008 | 23.10 | 25.93 | 37.68 | 54.87 | 67.03 | 76.30 | 83.57 | a | 80.71 | 74.23 | 57.33 | a | 39.67 | 20.77 | 53.43 | |||||||||||
2009 | 19.29 | 29.57 | 40.94 | 55.57 | 71.45 | 74.13 | 76.74 | 77.90 | b | 72.80 | 46.20 | a | 50.83 | 19.71 | 52.93 | |||||||||||
2010 | 17.58 | 22.93 | 43.52 | b | 64.17 | 67.94 | 76.97 | 82.19 | 83.48 | 69.23 | 63.13 | 41.70 | 21.71 | 54.55 | ||||||||||||
2011 | 16.39 | 22.79 | 32.71 | 52.17 | 66.23 | 75.67 | 86.10 | 80.45 | 71.07 | a | 64.19 | 45.97 | a | 35.94 | 54.14 | |||||||||||
2012 | ----- | z | 35.38 | 58.30 | a | 62.87 | 73.45 | 82.97 | 90.45 | 82.19 | ----- | z | ----- | z | ----- | z | ----- | z | 69.37 | e | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.57 | 28.94 | 41.05 | 57.28 | 69.01 | 77.69 | 82.84 | 80.44 | 72.73 | 59.01 | 41.72 | 27.65 | 55.00 | |||||||||||||
S.D. | 5.44 | 7.20 | 7.13 | 4.59 | 3.48 | 2.72 | 4.25 | 2.41 | 3.39 | 4.73 | 6.93 | 6.83 | 2.15 | |||||||||||||
SKEW | 0.06 | 0.16 | 0.62 | -0.09 | -0.10 | -0.05 | -0.62 | -0.71 | 0.14 | -1.59 | 0.13 | -0.44 | -0.21 | |||||||||||||
MAX | 34.42 | 40.31 | 58.30 | 64.17 | 74.52 | 82.97 | 90.45 | 83.73 | 79.20 | 64.19 | 54.70 | 36.23 | 58.58 | |||||||||||||
MIN | 11.26 | 18.96 | 29.68 | 48.17 | 62.48 | 71.80 | 72.19 | 74.77 | 67.03 | 46.20 | 29.23 | 13.74 | 50.95 | |||||||||||||
YRS | 19 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 19 |