YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 42.05 | k | 52.53 | a | 61.79 | a | 64.07 | a | 63.29 | 57.40 | 45.61 | 34.57 | 24.13 | 50.42 | d | |||||
1959 | 21.58 | 24.57 | n | 27.57 | a | 40.10 | 52.17 | b | 58.83 | a | 61.57 | a | 62.74 | 55.20 | 41.94 | 27.53 | 27.76 | b | 43.36 | a | ||||||
1960 | 22.81 | 21.04 | b | 28.61 | c | 40.77 | d | 44.76 | f | 60.13 | 62.83 | a | 62.90 | b | 54.83 | 46.19 | 32.89 | b | 23.45 | b | 41.50 | a | ||||
1961 | 18.53 | a | 26.25 | 31.22 | d | 38.37 | 49.65 | 57.63 | 59.93 | a | 58.96 | d | 52.87 | 41.42 | 31.03 | a | 25.77 | 40.97 | ||||||||
1962 | 18.81 | 27.38 | b | 28.19 | 40.03 | 51.32 | 58.13 | 61.05 | i | 61.32 | 58.37 | 46.74 | 35.33 | 28.16 | 41.25 | a | ||||||||||
1963 | 15.23 | 26.89 | 33.74 | 44.57 | 53.23 | 59.67 | 64.74 | 63.23 | 57.70 | 47.90 | 32.59 | c | 22.65 | 43.51 | ||||||||||||
1964 | 21.29 | 20.62 | 28.83 | a | 38.24 | a | 52.16 | 58.37 | 65.10 | 63.85 | d | 57.77 | 44.92 | f | 34.43 | 27.58 | 42.57 | a | ||||||||
1965 | 27.13 | 25.29 | 27.19 | 44.73 | d | 51.68 | f | 61.17 | 64.13 | 60.97 | 55.33 | c | 43.23 | a | 37.50 | b | 31.03 | b | 43.43 | a | ||||||
1966 | 19.35 | 22.18 | 32.89 | c | 42.37 | 50.93 | b | 59.67 | 65.94 | 60.48 | 56.61 | b | 41.03 | 35.70 | 20.47 | a | 42.30 | |||||||||
1967 | 22.39 | 25.71 | 37.16 | 45.77 | 45.84 | 59.23 | 62.06 | 59.10 | 52.93 | 41.42 | 32.82 | b | 22.26 | 42.22 | ||||||||||||
1968 | 25.90 | 27.48 | 33.63 | a | 37.57 | 49.06 | 56.23 | 60.84 | 60.35 | 49.92 | d | 43.42 | 32.45 | a | 23.71 | 41.71 | ||||||||||
1969 | 28.19 | 28.04 | 26.16 | 43.70 | 51.58 | 57.17 | 64.87 | 64.42 | 57.00 | 43.61 | 32.13 | 26.84 | 43.64 | |||||||||||||
1970 | 21.35 | 30.96 | 30.74 | 39.23 | 48.29 | 58.64 | e | 63.29 | 61.55 | 56.66 | a | 40.77 | 32.57 | 27.94 | 42.67 | |||||||||||
1971 | 24.19 | 25.14 | 30.32 | 39.50 | 47.68 | 59.60 | 62.10 | 59.93 | b | 54.64 | b | 45.55 | 35.03 | 28.74 | 42.70 | |||||||||||
1972 | 23.23 | 25.93 | 36.87 | 42.70 | 51.35 | 59.57 | 61.10 | 59.84 | 56.17 | 43.68 | c | 27.83 | 23.39 | 42.64 | ||||||||||||
1973 | 22.94 | 25.89 | 33.35 | 35.47 | 46.76 | b | 54.23 | 60.61 | 57.58 | 53.00 | 42.69 | b | 31.23 | 22.10 | 40.49 | |||||||||||
1974 | 24.23 | 24.54 | 37.71 | 41.37 | 53.19 | 58.30 | 62.90 | 60.48 | 51.80 | 47.19 | 33.33 | 25.68 | 43.39 | |||||||||||||
1975 | 26.00 | 27.43 | 32.29 | 39.00 | 47.30 | a | 58.00 | a | 61.74 | 59.45 | 51.63 | 42.52 | 30.43 | 25.52 | 41.78 | |||||||||||
1976 | 22.52 | 33.34 | 34.03 | 43.67 | 48.17 | a | 57.97 | 61.10 | 59.29 | 54.69 | a | 37.16 | 27.80 | 21.71 | 41.79 | |||||||||||
1977 | 20.06 | 28.36 | 31.90 | 42.27 | 52.32 | 59.97 | 63.23 | 64.52 | 58.97 | 46.19 | 33.27 | 29.29 | 44.19 | |||||||||||||
1978 | 21.52 | 25.75 | 33.35 | 44.90 | 51.19 | 60.43 | 63.81 | 60.18 | c | 57.03 | 44.37 | a | 38.33 | 25.03 | 43.82 | |||||||||||
1979 | 21.87 | 26.29 | 34.35 | 42.00 | 50.52 | 57.23 | 62.42 | 59.35 | 52.74 | c | 43.03 | 27.60 | 25.19 | 41.88 | ||||||||||||
1980 | 26.94 | 28.93 | 31.87 | 38.00 | 49.58 | 63.13 | 64.61 | 63.39 | 58.50 | b | 43.06 | 31.87 | 30.45 | 44.19 | ||||||||||||
1981 | 27.23 | 27.75 | 35.87 | 45.47 | 51.38 | e | 60.47 | 64.55 | 61.45 | 55.38 | a | 47.29 | 36.77 | 29.03 | 45.22 | |||||||||||
1982 | 25.26 | 26.07 | 33.65 | 42.33 | c | 50.00 | 56.46 | f | 62.33 | a | 63.13 | 55.93 | 41.42 | 32.17 | 25.29 | 41.60 | a | |||||||||
1983 | 23.71 | 29.75 | 33.35 | 36.10 | a | 44.77 | 54.93 | 61.46 | c | 62.00 | 56.80 | 48.39 | 37.20 | 19.34 | b | 42.32 | ||||||||||
1984 | 24.13 | 25.93 | 31.35 | 37.79 | k | 53.82 | i | 60.12 | e | 60.13 | 60.46 | g | 50.29 | b | 42.54 | e | 31.46 | d | 27.95 | j | 40.74 | d | ||||
1985 | 20.14 | i | 18.83 | p | 32.83 | g | 42.74 | g | 50.58 | 58.95 | i | 60.29 | 61.84 | 53.63 | 43.03 | b | 32.03 | 18.94 | 45.76 | e | ||||||
1986 | 23.35 | 28.27 | b | 34.32 | 43.37 | 49.55 | 61.10 | j | 61.85 | e | 61.03 | b | 55.33 | 43.77 | 29.97 | a | 25.03 | 41.44 | a | |||||||
1987 | 20.33 | a | 27.78 | a | 28.90 | a | 36.20 | 49.10 | 57.60 | 60.61 | 60.50 | a | 51.97 | 42.83 | a | 29.57 | 21.10 | 40.54 | ||||||||
1988 | 19.55 | 24.07 | 26.50 | g | 35.50 | f | 46.16 | l | 57.50 | n | 61.45 | b | 60.63 | a | 51.00 | a | 42.13 | 30.39 | b | 21.23 | 38.81 | d | ||||
1989 | 23.62 | b | 24.07 | a | 32.77 | a | 41.37 | 52.19 | 56.59 | c | 62.08 | f | 62.17 | g | 44.25 | r | 40.26 | 30.40 | 14.75 | g | 37.66 | d | ||||
1990 | 22.27 | a | 24.96 | 34.83 | a | 41.93 | a | 48.40 | a | 63.04 | e | 61.74 | 60.13 | 56.93 | 39.43 | a | 34.17 | 20.27 | a | 42.34 | ||||||
1991 | 24.37 | a | 29.04 | a | 33.35 | 40.62 | a | 51.64 | f | 59.57 | 62.90 | k | 60.48 | b | 52.38 | a | 39.32 | 29.55 | a | 27.16 | 39.58 | b | ||||
1992 | 24.19 | 29.34 | 34.48 | 41.62 | a | 49.61 | 57.43 | 60.58 | e | 59.23 | 52.57 | 42.00 | 25.17 | 24.74 | 41.75 | |||||||||||
1993 | 24.94 | 24.67 | a | 30.27 | a | 38.28 | a | 48.06 | 58.63 | 65.06 | 60.25 | g | 50.75 | b | 37.86 | b | 25.23 | 21.45 | 38.65 | a | ||||||
1994 | 19.07 | a | 21.19 | a | 32.84 | 37.93 | 52.20 | f | ----- | z | 67.41 | i | 61.38 | b | 54.83 | ----- | z | 34.52 | a | 29.57 | a | 36.42 | d | |||
1995 | 26.19 | 31.64 | 34.61 | 39.14 | a | 51.58 | 57.89 | b | 63.71 | 62.77 | 56.90 | a | 42.48 | 34.27 | 26.97 | 44.01 | ||||||||||
1996 | 23.26 | 29.83 | 28.13 | a | 40.55 | a | 55.68 | 61.63 | 64.52 | 61.90 | a | 51.57 | g | 40.90 | a | 30.61 | b | 24.16 | 41.92 | a | ||||||
1997 | 23.75 | c | 25.15 | a | 31.38 | b | 36.38 | a | ----- | z | 57.31 | a | 61.74 | 60.93 | a | 56.57 | b | 42.33 | a | 28.30 | 21.53 | a | 40.49 | a | ||
1998 | 25.03 | 27.07 | 28.57 | a | 35.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.94 | h | |||
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | 40.10 | j | 49.48 | j | 59.00 | t | 63.65 | n | 62.50 | q | 50.80 | t | 44.16 | l | 25.64 | s | 21.10 | u | ----- | z |
2001 | 22.73 | p | 28.33 | s | 35.58 | s | 38.29 | w | 51.25 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.98 | 26.58 | 32.12 | 40.56 | 50.17 | 58.87 | 62.58 | 61.21 | 54.82 | 43.02 | 32.00 | 24.86 | 42.61 | |||||||||||||
S.D. | 2.78 | 2.80 | 2.89 | 2.93 | 2.33 | 2.00 | 1.67 | 1.67 | 2.51 | 2.65 | 3.19 | 3.24 | 1.23 | |||||||||||||
SKEW | -0.45 | -0.03 | -0.19 | -0.06 | -0.17 | 0.04 | 0.23 | 0.20 | -0.29 | 0.11 | -0.16 | 0.04 | 0.16 | |||||||||||||
MAX | 28.19 | 33.34 | 37.71 | 45.77 | 55.68 | 63.13 | 65.94 | 64.52 | 58.97 | 48.39 | 38.33 | 31.03 | 45.22 | |||||||||||||
MIN | 15.23 | 20.62 | 26.16 | 35.10 | 44.77 | 54.23 | 59.93 | 57.58 | 49.92 | 37.16 | 25.17 | 18.94 | 40.49 | |||||||||||||
YRS | 39 | 38 | 38 | 37 | 33 | 35 | 36 | 37 | 38 | 38 | 40 | 38 | 23 |