YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 60.83 | a | 59.50 | 46.26 | 34.77 | 28.87 | 46.05 | g | ||||
1963 | 21.65 | 28.61 | 32.57 | a | 41.60 | 51.40 | a | 57.90 | 65.35 | 63.19 | 56.50 | 45.71 | 34.80 | 23.84 | 43.59 | |||||||||||
1964 | 19.48 | 19.57 | a | 30.65 | 39.50 | 49.87 | 57.37 | 63.61 | 63.00 | 56.80 | 41.06 | 31.10 | 26.03 | 41.50 | ||||||||||||
1965 | 29.58 | 26.93 | 29.68 | 41.27 | 48.45 | 55.97 | 64.29 | 62.00 | 56.40 | 39.90 | 37.43 | 29.77 | 43.47 | |||||||||||||
1966 | 22.23 | 23.64 | 34.16 | 42.57 | 53.23 | 58.97 | 65.13 | 62.58 | 55.40 | 39.35 | 34.20 | 22.03 | 42.79 | |||||||||||||
1967 | 21.06 | 28.14 | 35.23 | a | 41.37 | 45.81 | 58.70 | 64.35 | 60.52 | 54.60 | 42.29 | 35.80 | 25.97 | 42.82 | ||||||||||||
1968 | 28.65 | 31.69 | 34.48 | 38.97 | 48.47 | a | 58.03 | 61.97 | 61.42 | 50.43 | 42.71 | 32.23 | 22.65 | 42.64 | ||||||||||||
1969 | 29.55 | 27.18 | 25.55 | 40.30 | 48.23 | 57.60 | 65.06 | 65.42 | 56.50 | 45.55 | 32.30 | 28.03 | 43.44 | |||||||||||||
1970 | 24.29 | 29.29 | 30.97 | 37.83 | 45.42 | 57.03 | 62.81 | 60.97 | 55.63 | 39.35 | 29.33 | 27.55 | 41.71 | |||||||||||||
1971 | 25.97 | 26.14 | 32.58 | 38.70 | 47.10 | 55.90 | 64.55 | 58.84 | 53.37 | 45.03 | 32.90 | 28.35 | 42.45 | |||||||||||||
1972 | 27.13 | 28.79 | 37.97 | 40.17 | 48.58 | 60.27 | 63.16 | 61.68 | 56.70 | 47.42 | 28.50 | 24.74 | 43.76 | |||||||||||||
1973 | 24.81 | 27.89 | 31.81 | 35.27 | 49.42 | 54.07 | 62.87 | 56.71 | 54.10 | 40.58 | 31.87 | 22.97 | 41.03 | |||||||||||||
1974 | 25.26 | 23.93 | 35.68 | 41.63 | 52.52 | 59.07 | 62.48 | 60.81 | 53.10 | 46.77 | 32.00 | 25.48 | 43.23 | |||||||||||||
1975 | 26.23 | 27.68 | 31.00 | 33.57 | 41.81 | 54.13 | 60.35 | 58.87 | 51.14 | a | 39.53 | a | 27.37 | 23.77 | 39.62 | |||||||||||
1976 | 22.68 | 29.59 | 33.39 | 38.63 | 48.13 | 58.47 | 61.45 | 59.06 | 55.17 | 39.61 | 26.17 | 22.03 | 41.20 | |||||||||||||
1977 | 25.32 | 26.07 | 30.35 | 41.43 | 49.26 | 60.27 | 63.29 | 65.13 | 59.03 | 48.19 | 33.07 | 31.04 | f | 45.58 | a | |||||||||||
1978 | 26.35 | 27.93 | 35.55 | 41.63 | 50.65 | 60.67 | 64.50 | a | 60.50 | u | 52.30 | t | 43.77 | 38.20 | 25.53 | a | 41.48 | b | ||||||||
1979 | 24.23 | a | 25.16 | c | 29.94 | 37.69 | a | 47.36 | i | 55.30 | 63.83 | b | 57.75 | c | 49.80 | 41.26 | 25.03 | 22.65 | 39.33 | a | ||||||
1980 | ----- | z | 29.34 | 28.97 | ----- | z | 47.13 | 61.13 | 64.77 | 62.23 | 57.27 | ----- | z | 28.67 | 26.48 | 45.11 | c | |||||||||
1981 | 28.40 | a | 31.46 | 36.07 | d | 46.43 | 54.81 | 59.93 | 63.55 | 59.74 | d | 53.61 | l | 45.84 | 28.60 | 25.77 | a | 43.69 | a | |||||||
1982 | 24.50 | a | 30.90 | h | 39.00 | b | 51.87 | g | 51.79 | b | 60.20 | 63.68 | 63.46 | e | 58.00 | 40.79 | b | 32.00 | 26.40 | a | 45.98 | b | ||||
1983 | 25.40 | a | 28.85 | a | 34.63 | a | 35.14 | a | 44.23 | 52.33 | 62.13 | 61.81 | 57.57 | 47.81 | 35.50 | 23.10 | 42.37 | |||||||||
1984 | 27.66 | b | 25.79 | 32.16 | 39.63 | 52.55 | 60.80 | 61.13 | 57.79 | b | 50.93 | a | 44.03 | a | 35.53 | 31.83 | a | 43.32 | ||||||||
1985 | 25.90 | a | 25.65 | e | 36.18 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.89 | k | 45.13 | 33.61 | b | 21.75 | k | 32.57 | h | |
1986 | ----- | z | 33.96 | b | 36.03 | b | 45.73 | d | 48.93 | d | 59.92 | d | 60.89 | d | 62.27 | e | 52.00 | k | 43.47 | a | 30.85 | c | 26.48 | b | 44.85 | b |
1987 | 21.00 | c | 25.45 | f | 29.26 | 36.77 | 47.04 | d | ----- | z | 61.59 | b | ----- | z | 52.30 | 46.32 | ----- | z | 24.41 | b | 39.84 | d | ||||
1988 | 23.97 | a | 29.33 | b | 28.21 | b | 38.93 | a | ----- | z | 57.56 | c | 61.97 | b | 61.10 | j | 51.00 | a | 43.83 | b | ----- | z | 22.24 | b | 39.67 | c |
1989 | ----- | z | 29.93 | a | 34.38 | g | ----- | z | 50.21 | b | 58.32 | e | 64.77 | 62.28 | b | 53.28 | a | 40.85 | d | 31.27 | 19.73 | a | 45.63 | c | ||
1990 | 21.14 | b | 24.07 | 34.03 | a | 44.72 | a | 50.03 | 64.61 | b | 62.70 | a | 59.86 | b | 57.21 | b | 42.65 | 35.24 | a | 26.80 | a | 43.59 | ||||
1991 | 27.38 | b | 31.18 | 33.03 | 39.07 | 49.28 | b | 57.27 | 62.52 | 61.94 | 53.80 | 42.23 | a | 29.67 | 28.90 | 43.02 | ||||||||||
1992 | 24.80 | a | 29.17 | 32.90 | b | 41.70 | 50.19 | 56.30 | 63.37 | a | 61.94 | 57.93 | 45.97 | a | 29.93 | a | 29.48 | 43.64 | ||||||||
1993 | 33.59 | b | 31.89 | 34.61 | 41.83 | 51.19 | 59.50 | 66.80 | a | 63.29 | 53.47 | 42.81 | 30.30 | 26.07 | a | 44.61 | ||||||||||
1994 | 23.48 | 26.00 | 36.42 | 40.50 | 51.58 | 66.56 | c | 66.55 | 66.03 | 56.07 | 44.03 | 35.07 | a | 32.06 | 45.36 | |||||||||||
1995 | ----- | z | 34.59 | f | 37.30 | d | 39.73 | 48.07 | a | 58.10 | a | 66.16 | 62.74 | 57.17 | 43.10 | a | 36.20 | 28.42 | 47.70 | b | ||||||
1996 | 24.24 | b | 32.93 | 32.16 | 39.93 | 53.77 | 60.96 | b | 65.59 | d | 62.23 | a | 55.20 | 42.97 | a | 31.93 | 25.10 | 43.92 | ||||||||
1997 | 26.06 | 28.11 | 36.26 | 37.87 | 53.23 | 59.10 | a | 64.40 | a | 63.27 | a | 59.03 | 42.38 | b | 32.38 | a | 25.00 | 43.92 | ||||||||
1998 | 26.23 | 26.04 | a | 36.15 | e | 36.17 | 48.19 | 59.07 | a | 65.77 | 62.61 | 59.03 | 48.06 | 36.70 | 26.84 | 44.24 | ||||||||||
1999 | 27.23 | 31.46 | 35.68 | 40.20 | 50.13 | 60.24 | a | 65.10 | 62.52 | b | 55.93 | 41.26 | 33.40 | 22.84 | 43.83 | |||||||||||
2000 | 27.13 | 30.76 | 34.32 | 44.17 | 54.42 | 63.07 | 64.77 | 62.68 | 57.47 | 45.84 | 30.13 | 26.00 | c | 45.06 | ||||||||||||
2001 | 23.80 | a | 30.32 | 33.03 | 39.79 | a | 52.80 | a | 61.50 | l | 63.86 | x | 64.23 | r | 57.85 | q | 44.78 | m | 39.17 | l | 28.29 | q | 35.95 | g | ||
2002 | 27.59 | n | 27.59 | k | 35.65 | h | 48.36 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.53 | a | 34.21 | f | 28.32 | 36.93 | j | |
2003 | ----- | z | ----- | z | 34.29 | 41.03 | a | 50.39 | 59.52 | a | 62.87 | a | 63.71 | 56.31 | a | 49.10 | 35.67 | c | 23.97 | a | 47.68 | b | ||||
2004 | 29.61 | c | 27.85 | b | 38.85 | d | 45.60 | j | 51.76 | j | 59.14 | h | 63.59 | b | 58.48 | d | 52.04 | g | 46.36 | i | 32.11 | k | 27.93 | q | 43.68 | g |
2005 | 28.33 | m | 33.19 | l | 31.40 | k | 41.10 | 50.79 | b | 57.69 | a | 64.24 | n | 64.00 | 57.30 | c | 43.24 | b | 28.45 | a | 22.12 | f | 48.94 | e | ||
2006 | 24.75 | g | 28.35 | e | 36.12 | f | 43.08 | f | 52.52 | b | 60.50 | b | 65.70 | a | 63.84 | 53.33 | 43.52 | 32.48 | a | ----- | z | 50.03 | d | |||
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.23 | 63.23 | 63.68 | 57.47 | 45.84 | ----- | z | ----- | z | 57.69 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.44 | 28.18 | 33.46 | 40.07 | 49.78 | 58.77 | 63.72 | 61.78 | 55.42 | 43.74 | 32.27 | 25.81 | 43.08 | |||||||||||||
S.D. | 2.91 | 2.88 | 3.03 | 2.77 | 2.81 | 2.68 | 1.59 | 2.15 | 2.59 | 2.66 | 3.13 | 2.78 | 1.29 | |||||||||||||
SKEW | 0.30 | -0.50 | -0.36 | 0.01 | -0.51 | 0.30 | -0.10 | -0.44 | -0.52 | 0.06 | -0.23 | 0.21 | -0.70 | |||||||||||||
MAX | 33.59 | 33.96 | 39.00 | 46.43 | 54.81 | 66.56 | 66.80 | 66.03 | 59.50 | 49.10 | 38.20 | 32.06 | 45.36 | |||||||||||||
MIN | 19.48 | 19.57 | 25.55 | 33.57 | 41.81 | 52.33 | 60.35 | 56.71 | 49.80 | 39.35 | 25.03 | 19.73 | 39.62 | |||||||||||||
YRS | 36 | 38 | 39 | 37 | 39 | 40 | 41 | 40 | 39 | 43 | 40 | 39 | 26 |