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 | 52.21 | f | 49.50 | a | 49.50 | k |
1930 | 32.67 | a | 51.11 | 59.97 | a | 64.77 | 63.84 | 73.07 | b | 80.20 | a | 84.50 | c | 74.14 | b | 63.53 | a | 53.65 | d | 45.88 | f | 63.77 | a | |||
1931 | 49.92 | e | 52.31 | b | 56.14 | b | 66.86 | a | 77.13 | a | 74.75 | b | 86.86 | c | 84.68 | 70.41 | a | 63.80 | a | 49.52 | a | 43.00 | 64.61 | |||
1932 | 42.50 | a | 46.69 | 53.16 | 61.70 | 67.87 | a | 79.83 | 78.68 | 82.43 | a | 79.93 | a | 66.73 | i | 53.18 | b | 42.42 | e | 62.58 | a | |||||
1933 | 43.10 | a | 45.24 | k | 53.07 | b | 65.07 | 63.07 | a | 74.50 | b | 83.90 | b | 84.03 | b | 68.10 | 66.73 | e | 51.11 | b | 50.17 | a | 63.89 | a | ||
1934 | 53.05 | j | 55.86 | 65.21 | c | 73.31 | d | 73.20 | a | 77.64 | b | 80.20 | a | 83.13 | 73.18 | b | 65.61 | 53.87 | 47.45 | 68.06 | a | |||||
1935 | 43.97 | 51.79 | 50.13 | 62.60 | 72.47 | a | 78.93 | 82.61 | 84.13 | 78.53 | 59.17 | b | 47.83 | 45.87 | a | 63.17 | ||||||||||
1936 | 47.39 | 40.24 | 53.40 | a | 66.34 | a | 73.19 | 74.80 | 80.90 | a | 82.58 | 75.27 | 68.93 | a | 52.03 | 45.42 | 63.38 | |||||||||
1937 | 34.32 | 47.41 | a | 56.32 | 57.87 | 71.29 | 76.20 | 81.71 | 78.15 | d | 74.20 | 66.38 | b | 53.80 | 48.81 | 62.20 | ||||||||||
1938 | 45.70 | a | 48.82 | 53.53 | a | 63.20 | 71.00 | 79.07 | b | 86.93 | a | 78.28 | b | 77.59 | a | 63.81 | 48.96 | d | 47.61 | 63.71 | ||||||
1939 | 47.17 | a | 45.70 | a | 58.00 | a | 66.43 | 72.03 | 72.87 | 83.00 | 82.26 | 76.17 | 62.69 | b | 52.73 | 48.68 | 63.98 | |||||||||
1940 | 46.93 | a | 52.10 | 58.63 | a | 64.37 | 74.48 | 80.72 | a | 79.81 | 82.81 | 74.90 | a | 64.68 | 50.83 | a | 47.00 | 64.77 | ||||||||
1941 | 48.48 | 54.57 | 63.58 | 65.93 | 67.77 | 74.03 | 85.94 | 78.13 | 68.60 | 63.39 | 52.17 | a | 46.87 | 64.12 | ||||||||||||
1942 | 40.23 | 48.93 | a | 54.84 | 61.97 | 65.71 | 71.33 | 81.52 | 80.63 | a | 75.93 | 64.58 | 49.53 | 47.29 | 61.87 | |||||||||||
1943 | 40.10 | a | 53.63 | a | 54.71 | 65.60 | 67.19 | 72.17 | 81.35 | 77.39 | 83.00 | 63.74 | 54.20 | 46.40 | a | 63.29 | ||||||||||
1944 | 46.13 | 49.85 | b | 55.94 | 61.53 | 71.03 | b | 73.63 | 82.84 | 80.77 | 79.43 | 69.13 | 52.53 | 45.45 | 64.02 | |||||||||||
1945 | 48.19 | 51.25 | 52.94 | 59.57 | 70.39 | 75.40 | 83.77 | 81.81 | 73.20 | 65.52 | 52.48 | a | 46.71 | 63.44 | ||||||||||||
1946 | 45.32 | 49.11 | 56.13 | 62.90 | 73.32 | 71.83 | 80.81 | 82.74 | 75.30 | 61.43 | a | 52.03 | 47.71 | 63.22 | ||||||||||||
1947 | 41.94 | 54.61 | 61.94 | 67.47 | 74.39 | 71.93 | 77.23 | 78.03 | b | 78.33 | 63.71 | 53.97 | 47.47 | a | 64.25 | |||||||||||
1948 | 46.19 | 48.07 | 53.58 | 56.13 | 66.77 | a | 78.97 | 79.87 | a | 76.00 | 75.67 | 62.97 | 49.62 | a | 41.35 | 61.27 | ||||||||||
1949 | 36.16 | 46.57 | 54.61 | 65.93 | 73.45 | 77.41 | a | 81.97 | 80.29 | g | 81.37 | 59.48 | 57.83 | 46.84 | 61.97 | a | ||||||||||
1950 | 35.29 | 47.29 | 51.67 | a | 59.57 | 69.45 | 75.77 | 82.97 | 85.90 | 79.77 | 59.27 | a | 52.07 | 52.13 | 62.59 | |||||||||||
1951 | 44.90 | b | 50.43 | 50.39 | 69.43 | 71.00 | 80.67 | 84.26 | 83.26 | 80.13 | 63.06 | 51.93 | 43.32 | 64.40 | ||||||||||||
1952 | 41.90 | 47.68 | a | 52.94 | 67.13 | 71.35 | 72.07 | a | 87.17 | a | 84.16 | 83.47 | 74.87 | 49.83 | a | 47.52 | 65.01 | |||||||||
1953 | 52.90 | 52.68 | 54.45 | 59.52 | a | 65.45 | 67.63 | 80.94 | 79.52 | 77.38 | a | 67.00 | 55.34 | a | 48.42 | 63.44 | ||||||||||
1954 | 43.94 | 52.11 | a | 56.14 | c | 60.93 | a | 71.93 | a | 69.21 | a | 77.00 | 75.06 | 73.50 | 64.73 | a | 55.43 | 46.61 | 62.22 | |||||||
1955 | 43.93 | a | 47.75 | 49.81 | 55.13 | 64.68 | 73.13 | 75.40 | a | 81.10 | 76.03 | 63.20 | a | 47.53 | 45.13 | 60.24 | ||||||||||
1956 | 46.17 | a | 41.55 | 51.06 | 65.23 | 72.52 | 68.60 | 83.65 | 79.32 | 74.17 | 59.26 | 50.97 | 46.11 | c | 61.55 | |||||||||||
1957 | 36.32 | 50.18 | 54.17 | a | 64.03 | a | 70.97 | b | 73.25 | b | 78.10 | 77.42 | 81.97 | a | 62.80 | a | 53.13 | 49.00 | a | 62.61 | ||||||
1958 | 49.57 | a | 55.19 | a | 55.72 | b | 61.27 | 75.58 | 77.83 | a | 88.40 | a | 86.83 | a | 75.03 | 69.86 | b | 51.96 | c | 50.17 | b | 66.45 | ||||
1959 | 46.39 | 48.29 | 54.93 | d | 61.96 | c | 65.90 | a | 71.20 | 82.53 | a | 78.61 | c | 70.72 | a | 64.29 | 52.83 | a | 44.87 | 61.88 | ||||||
1960 | 38.41 | b | 48.30 | b | 52.03 | a | 59.68 | b | 61.69 | b | 76.63 | 87.07 | a | 79.32 | 77.90 | a | 66.67 | a | 52.93 | 46.52 | 62.26 | |||||
1961 | 50.90 | b | 52.48 | c | 54.50 | a | 58.61 | b | 66.39 | 81.07 | a | 85.68 | 88.71 | 74.45 | a | 64.35 | 50.14 | a | 46.17 | a | 64.45 | |||||
1962 | 45.72 | b | 49.74 | a | 52.67 | a | 62.83 | a | 60.71 | 73.77 | 80.79 | b | 78.76 | b | 74.57 | 62.97 | 53.62 | a | 47.87 | 62.00 | ||||||
1963 | 40.69 | b | 56.00 | 54.13 | 55.57 | 68.32 | 71.47 | 73.68 | 78.87 | 79.67 | 62.45 | 52.48 | g | 48.90 | 62.70 | a | ||||||||||
1964 | 47.13 | 52.41 | 53.32 | 58.47 | 64.35 | 69.73 | 77.06 | 75.13 | 71.97 | 66.77 | a | 49.31 | a | 45.00 | 60.89 | |||||||||||
1965 | 46.00 | 50.25 | 59.71 | 61.77 | 64.94 | 72.33 | 82.32 | 79.32 | 73.93 | 67.74 | 54.83 | 43.77 | 63.08 | |||||||||||||
1966 | 45.29 | 50.21 | 53.94 | 62.83 | 69.84 | 72.13 | 76.84 | 79.90 | 74.93 | 62.87 | 55.73 | 48.77 | 62.77 | |||||||||||||
1967 | 48.60 | a | 52.86 | 51.90 | a | 56.37 | 68.29 | 77.33 | 83.71 | 91.61 | 82.21 | a | 64.33 | a | 55.87 | 46.77 | 64.99 | |||||||||
1968 | 45.94 | 57.55 | 57.29 | 59.67 | 66.70 | a | 72.93 | 81.55 | 76.06 | 73.47 | 60.87 | 52.40 | 43.16 | 62.30 | ||||||||||||
1969 | 38.74 | 47.54 | 59.58 | 60.93 | 72.07 | a | 76.80 | 78.60 | a | 78.19 | 73.47 | 62.06 | 53.53 | 47.00 | 62.38 | |||||||||||
1970 | 46.00 | 56.04 | 57.23 | 57.50 | 69.48 | 79.30 | 83.32 | 82.32 | 71.20 | 64.71 | 52.93 | 44.48 | 63.71 | |||||||||||||
1971 | 44.68 | 50.11 | 51.35 | 60.17 | 69.19 | 68.83 | a | 82.90 | 84.39 | 72.47 | 60.71 | 51.30 | 44.10 | 61.68 | ||||||||||||
1972 | 43.55 | 49.83 | 56.74 | 57.23 | 72.48 | 74.83 | 84.10 | 84.48 | 71.80 | 64.10 | 53.63 | 42.13 | 62.91 | |||||||||||||
1973 | 43.77 | a | 53.50 | 54.10 | 62.60 | 70.39 | 72.97 | 82.77 | 77.06 | 75.55 | a | 62.35 | 49.07 | 49.03 | 62.76 | |||||||||||
1974 | 43.61 | 47.61 | 55.06 | 59.33 | 64.26 | 76.13 | 78.42 | 81.61 | 82.20 | 68.16 | 54.40 | 48.94 | 63.31 | |||||||||||||
1975 | 47.06 | 47.50 | 53.16 | 57.00 | 68.45 | 71.33 | 79.84 | 74.90 | 80.37 | 59.61 | 51.20 | 48.45 | 61.57 | |||||||||||||
1976 | 47.84 | 49.41 | 52.19 | 59.77 | 67.74 | 70.40 | 78.29 | 75.29 | 75.90 | 65.68 | 56.77 | 44.84 | 62.01 | |||||||||||||
1977 | 46.13 | 54.68 | 52.61 | 65.80 | 62.65 | 76.03 | 77.10 | 84.00 | 70.97 | a | 64.10 | b | 50.13 | 48.16 | 62.70 | |||||||||||
1978 | 46.06 | 53.00 | 60.57 | a | 59.70 | 65.70 | a | 77.10 | a | 81.45 | 78.90 | 70.07 | 68.13 | 48.31 | a | 41.81 | 62.57 | |||||||||
1979 | 38.00 | 47.86 | 59.71 | 60.93 | 70.16 | 76.00 | 81.73 | a | 77.97 | 76.76 | a | 66.42 | 52.53 | 50.68 | 63.23 | |||||||||||
1980 | 43.45 | 50.00 | 53.71 | 63.53 | 66.45 | 67.53 | 79.84 | 78.03 | 75.23 | 67.26 | 54.10 | 49.65 | 62.40 | |||||||||||||
1981 | 51.77 | 51.14 | 58.90 | 60.57 | 66.19 | 70.33 | 78.61 | 85.58 | 76.83 | 63.74 | 56.40 | 48.58 | 64.06 | |||||||||||||
1982 | 43.00 | 49.39 | 55.23 | 57.87 | 68.03 | 75.73 | 77.90 | 79.03 | 73.17 | 64.00 | 50.47 | 46.90 | 61.73 | |||||||||||||
1983 | 48.45 | 52.54 | 57.16 | 62.53 | 71.35 | 70.30 | 74.94 | 78.77 | 72.97 | 63.97 | 54.00 | 39.55 | 62.21 | |||||||||||||
1984 | 48.65 | 52.59 | 58.42 | 57.87 | 64.16 | 70.83 | 80.97 | 80.90 | 73.60 | 59.65 | 51.87 | 42.55 | 61.84 | |||||||||||||
1985 | 44.10 | 48.07 | 54.39 | 63.33 | 68.68 | 74.41 | a | 86.45 | 79.26 | 70.53 | 62.45 | 43.33 | 42.55 | 61.46 | ||||||||||||
1986 | 50.06 | 50.14 | 61.13 | 60.20 | 66.45 | 77.03 | 75.03 | 86.71 | 71.33 | 67.48 | 53.30 | 46.26 | 63.76 | |||||||||||||
1987 | 46.84 | 52.61 | 56.35 | 65.70 | 71.00 | 77.77 | 77.00 | 83.00 | 79.80 | 73.03 | 55.20 | 43.00 | 65.11 | |||||||||||||
1988 | 44.26 | 52.48 | 56.81 | 61.60 | 65.26 | 72.73 | 82.00 | 79.87 | 77.20 | 68.26 | 52.07 | 46.45 | b | 63.25 | ||||||||||||
1989 | 46.71 | 42.54 | 51.42 | 65.96 | c | 68.03 | a | 75.90 | 74.84 | 76.23 | 79.93 | 63.32 | 53.67 | 45.23 | 61.98 | |||||||||||
1990 | 48.35 | 47.36 | 59.00 | 64.67 | 65.52 | 72.10 | 83.55 | 81.74 | 77.77 | 62.03 | 52.24 | a | 39.16 | 62.79 | ||||||||||||
1991 | 46.23 | 57.07 | 53.48 | 59.13 | 62.39 | 68.24 | a | 80.74 | 81.61 | 80.30 | 67.81 | 52.69 | a | 46.48 | 63.01 | |||||||||||
1992 | 48.74 | 56.62 | 63.68 | 64.10 | 75.45 | 79.10 | 80.94 | 83.94 | 74.23 | 65.77 | 51.27 | 44.03 | 65.66 | |||||||||||||
1993 | 41.71 | 48.18 | 57.30 | a | 59.97 | 70.97 | 70.57 | 71.74 | 79.58 | 80.10 | 67.90 | 47.50 | 46.55 | 61.84 | ||||||||||||
1994 | 48.81 | 47.92 | b | 60.68 | 62.87 | 69.81 | 72.30 | 83.71 | 80.74 | 79.10 | 62.52 | 46.00 | 46.90 | 63.45 | ||||||||||||
1995 | 49.52 | 55.19 | a | 57.13 | 60.27 | 71.74 | 73.30 | 81.32 | 78.65 | 76.57 | 61.81 | 56.83 | 47.26 | 64.13 | ||||||||||||
1996 | 45.26 | 49.90 | 57.19 | 61.97 | 63.48 | 73.87 | 85.48 | 83.16 | 71.90 | 61.74 | 50.40 | 46.42 | 62.56 | |||||||||||||
1997 | 45.84 | 50.61 | 54.87 | 60.60 | 74.00 | 72.90 | 80.87 | 83.94 | 76.00 | 61.68 | 59.73 | 46.61 | 63.97 | |||||||||||||
1998 | 48.58 | 52.86 | 58.58 | 64.60 | 64.87 | 75.73 | 83.45 | 84.58 | 81.73 | 64.00 | 54.87 | 46.39 | 65.02 | |||||||||||||
1999 | 47.45 | 50.82 | 54.68 | 62.57 | 65.17 | b | 70.43 | 78.86 | q | ----- | z | ----- | z | 60.42 | s | 55.87 | 52.74 | 57.47 | d | |||||||
2000 | 46.39 | 51.10 | 56.84 | 69.43 | 69.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.57 | g | |||||
2001 | ----- | z | ----- | z | ----- | z | ----- | z | 70.13 | a | 69.59 | a | 76.45 | 77.74 | 73.20 | 58.90 | 51.37 | 45.87 | 65.41 | d | ||||||
2002 | 44.00 | 49.96 | 50.23 | 61.38 | a | 65.10 | 75.96 | c | 86.30 | k | 84.20 | p | 76.33 | o | 64.66 | b | 54.76 | a | 49.10 | 57.24 | c | |||||
2003 | 51.03 | 52.54 | 55.29 | 58.23 | 67.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.01 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.01 | 50.56 | 55.63 | 62.05 | 68.70 | 74.06 | 81.05 | 80.92 | 75.87 | 64.35 | 52.39 | 46.39 | 63.07 | |||||||||||||
S.D. | 4.13 | 3.40 | 3.36 | 3.53 | 3.68 | 3.38 | 3.51 | 3.45 | 3.69 | 3.12 | 2.80 | 2.67 | 1.23 | |||||||||||||
SKEW | -0.91 | -0.38 | 0.63 | 0.45 | 0.02 | 0.14 | -0.26 | 0.45 | 0.13 | 0.71 | -0.37 | -0.38 | 0.33 | |||||||||||||
MAX | 52.90 | 57.55 | 65.21 | 73.31 | 77.13 | 81.07 | 88.40 | 91.61 | 83.47 | 74.87 | 59.73 | 52.74 | 66.45 | |||||||||||||
MIN | 32.67 | 40.24 | 49.81 | 55.13 | 60.71 | 67.53 | 71.74 | 74.90 | 68.10 | 58.90 | 43.33 | 39.16 | 60.24 | |||||||||||||
YRS | 72 | 72 | 73 | 73 | 74 | 72 | 70 | 69 | 70 | 70 | 71 | 72 | 63 |