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 | 31.50 | m | 33.82 | 35.16 | 43.90 | 51.81 | 60.10 | 62.39 | 61.84 | 56.63 | 51.16 | 39.23 | 31.13 | 47.92 | a | |||||||||||
1988 | 29.81 | 34.72 | 38.00 | 45.30 | c | 52.11 | c | 60.77 | 62.32 | c | 62.10 | 56.73 | 49.47 | a | 42.40 | 29.84 | 46.96 | |||||||||
1989 | 32.90 | 34.39 | e | 42.65 | 50.62 | a | 59.27 | a | 60.17 | 64.48 | 61.65 | 55.53 | 49.55 | 41.73 | 26.55 | 48.29 | ||||||||||
1990 | 32.90 | a | 36.68 | 38.39 | 46.80 | 55.81 | 67.82 | b | 59.52 | b | 59.94 | 56.73 | 45.90 | a | ----- | z | 31.77 | a | 48.39 | a | ||||||
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.69 | a | 59.84 | f | 60.52 | 52.82 | b | 49.77 | a | 33.83 | a | 34.03 | a | 48.44 | f | |
1992 | 27.89 | c | 35.72 | 40.34 | b | 47.82 | b | 52.35 | 59.55 | a | 62.28 | b | 59.63 | a | 57.04 | b | 47.40 | f | 33.08 | d | 34.30 | h | 47.57 | b | ||
1993 | 34.31 | e | 32.88 | c | 38.48 | b | 45.12 | e | 52.65 | e | 61.43 | 64.45 | 63.28 | b | 56.36 | b | 48.38 | e | 35.43 | b | 35.20 | a | 47.33 | |||
1994 | 33.10 | a | 37.27 | b | 41.90 | 48.69 | a | 54.58 | e | 69.66 | a | 67.32 | 65.94 | 59.04 | b | 51.97 | a | 41.38 | a | 38.66 | b | 50.79 | ||||
1995 | 34.07 | c | 41.41 | a | 41.60 | a | 47.04 | c | 55.65 | 60.59 | a | 66.10 | b | 63.70 | a | 57.70 | 53.14 | b | 44.07 | a | 35.93 | a | 50.08 | |||
1996 | 34.43 | a | 37.32 | a | 36.04 | c | 46.68 | b | 65.43 | a | 63.37 | 64.48 | 61.42 | 56.03 | 48.93 | b | 41.10 | a | 35.67 | a | 49.24 | |||||
1997 | 27.25 | c | 30.43 | 39.67 | a | 40.07 | 53.27 | a | 59.34 | a | 62.29 | 62.04 | c | 58.10 | 46.35 | 35.41 | a | 26.50 | a | 45.06 | ||||||
1998 | 34.00 | a | 31.56 | a | 34.63 | a | 42.30 | 57.97 | a | 65.14 | b | 63.13 | 59.04 | d | 57.71 | b | 48.46 | e | 40.13 | 27.20 | a | 46.77 | ||||
1999 | 31.31 | b | 36.29 | 35.57 | a | 43.17 | a | 50.47 | a | 57.77 | 60.42 | 60.63 | a | 53.00 | c | 44.20 | a | 39.55 | a | 27.77 | a | 45.01 | ||||
2000 | 33.23 | 35.79 | 37.65 | 45.86 | a | 56.14 | c | 56.62 | d | 61.13 | 58.74 | 55.96 | g | 42.40 | a | 30.30 | 24.68 | c | 43.87 | a | ||||||
2001 | 21.41 | b | 31.39 | e | 31.03 | a | 44.67 | f | 57.23 | a | 62.48 | a | 65.73 | a | 64.57 | a | 58.41 | a | 52.00 | a | 42.63 | 33.24 | b | 47.29 | a | |
2002 | 35.03 | a | 27.30 | a | 35.43 | a | 51.31 | d | 57.10 | a | 65.62 | a | 64.20 | a | 66.35 | 59.32 | b | 49.20 | a | 38.75 | b | 31.81 | e | 48.45 | ||
2003 | 34.24 | b | 38.68 | f | 40.74 | d | 45.92 | e | 58.80 | f | 61.19 | d | 65.29 | 65.77 | 58.27 | d | 51.61 | 44.21 | b | 35.21 | g | 51.92 | c | |||
2004 | 35.77 | 31.79 | a | 43.32 | 44.00 | a | 57.21 | b | 61.63 | c | 63.73 | a | 61.10 | a | 55.97 | 51.03 | b | 37.17 | 33.13 | 47.99 | ||||||
2005 | 36.37 | a | 35.11 | 39.26 | 45.60 | 55.45 | 64.03 | 65.57 | a | 61.67 | a | 59.80 | 49.00 | a | 43.45 | a | 34.26 | 49.13 | ||||||||
2006 | 36.93 | a | 36.96 | 42.03 | 51.27 | 60.45 | 65.71 | b | 65.29 | 63.65 | 57.03 | 51.29 | 43.17 | 33.35 | 50.60 | |||||||||||
2007 | 28.17 | b | 36.96 | a | 43.93 | a | 45.28 | a | 53.84 | 55.40 | e | 62.67 | a | 61.61 | h | 60.70 | c | 50.45 | b | 39.19 | c | 33.54 | g | 47.66 | b | |
2008 | 32.77 | e | 37.63 | b | 41.37 | a | 47.17 | 56.96 | g | 68.00 | e | 62.76 | j | 63.07 | d | 57.35 | d | 51.95 | k | 42.39 | l | 36.58 | g | 49.62 | e | |
2009 | 35.92 | e | 40.06 | j | 45.80 | p | 50.33 | f | 61.10 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.92 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.47 | 34.77 | 38.91 | 46.20 | 55.73 | 62.09 | 63.64 | 62.22 | 57.16 | 49.21 | 39.31 | 31.71 | 48.13 | |||||||||||||
S.D. | 3.73 | 3.18 | 3.36 | 2.88 | 3.56 | 3.73 | 2.02 | 2.21 | 1.93 | 2.73 | 3.96 | 3.88 | 1.88 | |||||||||||||
SKEW | -1.40 | -0.38 | -0.49 | 0.07 | 0.94 | 0.32 | -0.25 | 0.35 | -0.55 | -0.96 | -0.71 | -0.24 | -0.27 | |||||||||||||
MAX | 36.93 | 41.41 | 43.93 | 51.31 | 65.43 | 69.66 | 67.32 | 66.35 | 60.70 | 53.14 | 44.21 | 38.66 | 50.79 | |||||||||||||
MIN | 21.41 | 27.30 | 31.03 | 40.07 | 50.47 | 55.40 | 59.52 | 58.74 | 52.82 | 42.40 | 30.30 | 24.68 | 45.01 | |||||||||||||
YRS | 21 | 20 | 21 | 20 | 19 | 22 | 20 | 21 | 21 | 20 | 20 | 18 | 13 |