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 | 62.65 | 55.38 | d | 45.80 | a | 24.87 | 29.10 | 43.56 | g | |||
1939 | 23.16 | ----- | z | 31.68 | 44.52 | a | 62.60 | a | 69.89 | c | 62.16 | 63.52 | 61.07 | 37.42 | 26.27 | 21.71 | 45.82 | a | ||||||||
1940 | 23.00 | 25.07 | a | 32.32 | 39.37 | 51.61 | 58.90 | 63.84 | 58.84 | 58.83 | l | 41.16 | 24.50 | 28.32 | 40.63 | a | ||||||||||
1941 | 26.94 | 31.96 | 31.03 | 30.97 | 44.45 | 54.13 | 58.32 | 61.06 | 54.77 | 42.03 | 30.77 | 22.38 | g | 42.40 | a | |||||||||||
1942 | 22.55 | ----- | z | 24.35 | 38.20 | 42.90 | 56.73 | 61.48 | 60.65 | 56.73 | 39.55 | ----- | z | ----- | z | 44.79 | c | |||||||||
1943 | ----- | z | 33.67 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.67 | k |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | 46.61 | c | 53.55 | a | 63.32 | 63.90 | 53.80 | 49.26 | 33.59 | a | 24.81 | 48.60 | d | |||||
1945 | 24.00 | m | 24.14 | 27.62 | o | 29.83 | l | 44.10 | 49.53 | 63.06 | 63.10 | 52.67 | 39.52 | 29.83 | 22.84 | 43.20 | c | |||||||||
1946 | 25.10 | 20.36 | 31.16 | 40.83 | 44.35 | 57.24 | a | 62.84 | 63.48 | 57.38 | a | 41.83 | a | 27.48 | a | 26.90 | 41.58 | |||||||||
1947 | 20.83 | a | 25.93 | 31.00 | 36.90 | 50.16 | 53.80 | 63.35 | 62.90 | 53.43 | 44.00 | a | 29.20 | 20.45 | 41.00 | |||||||||||
1948 | 18.84 | 27.72 | 30.74 | 41.13 | 46.48 | f | 59.26 | c | 64.55 | 63.16 | 56.83 | 46.00 | 25.17 | 28.84 | 42.02 | a | ||||||||||
1949 | 24.65 | 27.54 | 33.16 | 39.07 | a | 46.83 | a | 56.21 | b | 64.06 | 60.18 | c | 55.68 | h | 40.76 | b | 32.44 | c | 25.25 | c | 40.92 | a | ||||
1950 | 24.38 | e | 22.46 | b | 26.46 | c | 34.07 | ----- | z | 52.69 | a | 63.00 | a | ----- | z | ----- | z | 45.74 | 30.04 | e | 29.57 | c | 36.49 | c | ||
1951 | ----- | z | 23.82 | 30.28 | b | 39.00 | a | 42.84 | 50.21 | b | 65.72 | b | 64.42 | 53.11 | b | 44.43 | a | 32.67 | 29.77 | r | 44.65 | b | ||||
1952 | 28.35 | h | 25.45 | 29.12 | f | 39.83 | 48.61 | 59.10 | 62.13 | a | 62.81 | 52.70 | 40.77 | 29.29 | b | 23.28 | b | 44.40 | b | |||||||
1953 | 26.61 | 25.21 | 35.21 | c | 41.79 | a | 43.55 | 57.87 | 64.17 | b | 61.13 | 51.62 | d | 40.85 | e | 31.20 | 17.93 | b | 41.43 | |||||||
1954 | 22.85 | d | 29.22 | a | 31.44 | d | 42.67 | 50.43 | a | 55.54 | b | 64.86 | b | 62.53 | a | 57.00 | e | 46.68 | c | 32.90 | a | 23.81 | e | 43.33 | ||
1955 | 25.52 | b | 23.62 | b | 32.19 | d | 37.43 | b | 46.11 | c | 54.32 | b | 63.48 | h | 60.35 | n | 51.43 | 43.60 | a | 31.14 | b | 26.30 | d | 37.16 | b | |
1956 | 27.63 | a | 21.41 | b | 26.48 | f | 35.89 | b | 45.39 | c | 61.53 | 62.39 | 58.60 | f | 52.60 | 43.48 | d | 26.38 | d | 22.93 | b | 39.96 | b | |||
1957 | 31.23 | a | 36.08 | b | 34.62 | e | 38.13 | 45.85 | d | 59.07 | 66.55 | b | 62.75 | c | 49.29 | b | 44.66 | b | 29.31 | a | 23.30 | d | 43.40 | |||
1958 | 21.60 | a | 30.78 | a | 33.15 | d | 38.46 | b | 48.29 | c | ----- | z | 63.65 | 63.00 | a | 57.38 | a | 46.55 | b | 31.79 | a | 23.45 | b | 41.64 | a | |
1959 | 23.57 | c | 25.73 | b | 28.33 | g | 40.73 | 45.55 | 57.58 | k | 62.48 | b | 64.06 | 50.00 | a | 41.00 | a | 29.73 | h | 26.30 | a | 42.16 | c | |||
1960 | 22.66 | b | 22.14 | h | 32.80 | a | 36.47 | 45.03 | a | 59.24 | a | 62.70 | a | 63.83 | s | 55.28 | a | 42.17 | b | 30.61 | b | 23.11 | c | 41.01 | b | |
1961 | 26.07 | a | 25.11 | 31.03 | 36.72 | a | 44.23 | a | 55.69 | a | 63.52 | f | 63.32 | 54.28 | a | 40.00 | d | 30.55 | a | 28.72 | b | 39.61 | a | |||
1962 | 22.25 | c | 29.41 | a | 27.00 | 40.92 | d | 44.39 | 51.54 | b | 61.45 | 58.71 | 56.04 | b | 43.80 | a | 34.93 | 28.63 | a | 41.59 | ||||||
1963 | 20.43 | a | 27.33 | a | 27.89 | c | 35.90 | a | 47.14 | c | 53.69 | a | 65.45 | 61.85 | e | 56.34 | a | 44.45 | 31.47 | 20.62 | b | 41.05 | ||||
1964 | 15.79 | c | 15.33 | b | 28.10 | b | 35.54 | b | 46.29 | 53.93 | 64.10 | 61.66 | b | 55.32 | b | 40.63 | d | 27.32 | b | 24.33 | a | 39.03 | ||||
1965 | 27.83 | a | 24.96 | 29.10 | 37.77 | d | 45.90 | a | 52.37 | 64.32 | 59.90 | 54.80 | 39.71 | 35.23 | 28.77 | 41.72 | ||||||||||
1966 | 21.29 | 21.16 | c | 29.58 | 38.67 | 47.26 | 53.27 | 62.77 | 59.55 | 52.62 | a | 38.94 | 33.37 | 21.10 | 39.96 | |||||||||||
1967 | 19.83 | a | 26.71 | 32.26 | 38.97 | 43.81 | 55.80 | 64.35 | 60.45 | 54.17 | 40.55 | 32.27 | 24.97 | 41.18 | ||||||||||||
1968 | 24.97 | 31.76 | 32.97 | 36.33 | 44.45 | 54.83 | 60.48 | 58.16 | 49.07 | 40.65 | 31.00 | 20.00 | 40.39 | |||||||||||||
1969 | 28.52 | 25.57 | 24.35 | 36.93 | 45.00 | 53.83 | 64.35 | 65.58 | 55.40 | 42.84 | 31.70 | 27.03 | 41.76 | |||||||||||||
1970 | 20.35 | 27.18 | 29.71 | 33.33 | 44.00 | 55.63 | 64.10 | 60.81 | 53.83 | 37.50 | a | 28.03 | 23.94 | 39.87 | ||||||||||||
1971 | 21.81 | 23.50 | 30.16 | 36.40 | 43.87 | 53.73 | 64.29 | 59.87 | 54.33 | 42.81 | 33.23 | 27.32 | 40.94 | |||||||||||||
1972 | 22.58 | 25.52 | 36.00 | 35.77 | 45.13 | 57.43 | 63.19 | 60.55 | 53.41 | a | 46.81 | 26.83 | 25.10 | a | 41.53 | |||||||||||
1973 | 22.23 | 27.75 | 29.16 | 31.27 | 44.39 | 50.90 | a | 59.74 | 56.29 | 50.40 | 38.00 | 27.69 | a | 21.60 | a | 38.28 | ||||||||||
1974 | 23.29 | 19.79 | 33.32 | 37.47 | 47.39 | 58.10 | 62.19 | 57.55 | b | 53.37 | 45.52 | 29.30 | 21.42 | 40.72 | ||||||||||||
1975 | 22.52 | 25.00 | 29.53 | a | 31.30 | 40.43 | a | 52.63 | 61.58 | 59.94 | 53.13 | 39.06 | 27.53 | 23.10 | a | 38.81 | ||||||||||
1976 | 21.90 | 29.79 | 30.20 | a | 37.28 | a | 45.25 | c | 54.43 | 60.39 | c | 59.42 | 53.55 | a | 36.35 | 26.32 | b | 18.32 | 39.43 | |||||||
1977 | 23.90 | 25.32 | 25.55 | 38.10 | 43.52 | 56.13 | 63.58 | 61.84 | 55.07 | 45.42 | 30.93 | 25.26 | 41.22 | |||||||||||||
1978 | 24.94 | 25.64 | 31.77 | 37.50 | 45.26 | 57.57 | b | 61.76 | b | 57.77 | 53.70 | 41.87 | 35.43 | 19.45 | 41.06 | |||||||||||
1979 | 23.00 | d | 21.93 | 26.03 | a | 35.77 | 43.00 | 51.77 | 63.04 | c | 58.13 | 53.37 | 40.33 | d | ----- | z | 18.63 | l | 41.64 | b | ||||||
1980 | 25.61 | 26.17 | 26.80 | k | 31.07 | 39.71 | j | 58.33 | i | 64.10 | b | 59.61 | 55.50 | d | 38.03 | 26.79 | f | 21.70 | d | 40.23 | d | |||||
1981 | 27.54 | e | 22.21 | 30.61 | 41.33 | 45.37 | d | 58.00 | f | 62.48 | d | 58.54 | c | 54.15 | d | 43.22 | d | 29.26 | g | 25.96 | d | 41.14 | b | |||
1982 | 21.70 | a | 27.14 | 31.05 | j | 37.97 | 45.59 | d | 51.74 | c | ----- | z | 65.00 | h | 54.43 | 38.07 | c | 26.73 | h | 29.55 | k | 39.52 | e | |||
1983 | 23.83 | b | 28.00 | 31.83 | b | 34.13 | 43.44 | d | 52.48 | c | 62.57 | c | 63.04 | g | 57.17 | f | 46.54 | c | 35.42 | f | 24.41 | n | 40.35 | d | ||
1984 | 23.84 | 23.81 | b | 29.47 | a | 37.40 | 50.89 | d | 58.21 | b | 61.88 | e | 62.00 | b | 53.35 | d | 42.61 | h | 28.67 | o | 25.53 | l | 44.54 | c | ||
1985 | 24.93 | b | 23.67 | d | 29.57 | c | 37.54 | f | 46.63 | l | 53.64 | b | 58.78 | h | 59.28 | m | 50.75 | j | 41.67 | d | 29.24 | e | 22.83 | m | 33.79 | f |
1986 | 21.58 | e | 27.48 | a | 31.77 | a | 39.62 | d | 46.21 | b | 56.14 | a | 59.88 | f | 62.20 | p | 50.05 | i | 39.69 | b | 30.09 | g | 22.41 | n | 37.50 | e |
1987 | 19.68 | f | 21.93 | 26.78 | d | 34.11 | c | 43.46 | e | 52.17 | r | 51.42 | s | 58.50 | w | 49.00 | e | 44.83 | g | 30.15 | j | 16.56 | m | 35.06 | g | |
1988 | 21.89 | d | 26.34 | 30.23 | i | 35.77 | d | 45.85 | e | 52.50 | d | 61.00 | d | 61.86 | c | 47.46 | b | ----- | z | 28.80 | 23.44 | f | 42.39 | c | ||
1989 | 21.56 | f | 27.79 | 33.93 | b | 42.54 | b | 46.90 | 54.55 | j | 59.23 | r | 59.06 | m | 52.60 | t | 39.75 | c | 28.27 | 18.67 | j | 36.53 | f | |||
1990 | 19.03 | 21.32 | 29.28 | m | 39.40 | 46.55 | 61.48 | a | 61.86 | i | 56.48 | b | 54.76 | i | 40.42 | 32.32 | e | ----- | z | 39.63 | d | |||||
1991 | 22.90 | a | 26.89 | 27.96 | d | 35.32 | b | 45.64 | f | ----- | z | 60.10 | 61.72 | f | 51.86 | b | 41.63 | a | 26.93 | a | 28.14 | i | 36.70 | d | ||
1992 | 23.77 | 25.07 | 27.79 | g | 33.95 | i | 41.96 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.27 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.43 | 25.74 | 30.40 | 37.47 | 45.88 | 55.52 | 62.91 | 61.05 | 53.79 | 42.03 | 29.96 | 24.24 | 40.88 | |||||||||||||
S.D. | 2.79 | 3.66 | 2.77 | 3.06 | 3.34 | 3.64 | 1.65 | 2.26 | 2.56 | 2.96 | 2.84 | 3.16 | 1.28 | |||||||||||||
SKEW | 0.17 | 0.18 | -0.34 | -0.20 | 2.76 | 1.37 | -0.41 | -0.23 | -0.10 | 0.29 | -0.02 | -0.06 | -0.09 | |||||||||||||
MAX | 31.23 | 36.08 | 36.00 | 44.52 | 62.60 | 69.89 | 66.55 | 65.58 | 61.07 | 49.26 | 35.43 | 29.57 | 43.40 | |||||||||||||
MIN | 15.79 | 15.33 | 24.35 | 30.97 | 40.43 | 49.53 | 58.32 | 56.29 | 47.46 | 36.35 | 24.50 | 17.93 | 38.28 | |||||||||||||
YRS | 47 | 50 | 43 | 49 | 48 | 45 | 44 | 42 | 45 | 50 | 43 | 39 | 22 |