YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 90.33 | s | 85.71 | 85.18 | h | 78.84 | 68.53 | 50.19 | 70.82 | h | ||||
1928 | 56.84 | 50.97 | 62.19 | 68.17 | 77.55 | 83.37 | 92.74 | 88.29 | 87.17 | 74.42 | 54.60 | 50.42 | 70.56 | |||||||||||||
1929 | 44.77 | a | 41.43 | 62.84 | 73.66 | a | 74.47 | a | 87.93 | a | 92.57 | a | 95.19 | 82.23 | 71.42 | 46.13 | 55.70 | a | 69.03 | |||||||
1930 | 39.71 | 66.04 | 59.94 | 76.20 | 79.61 | 90.90 | 95.81 | 95.53 | a | 88.03 | a | 68.77 | 62.33 | 49.97 | 72.74 | |||||||||||
1931 | 53.81 | 56.89 | a | 56.06 | 66.93 | 76.13 | 91.97 | 94.13 | 90.58 | 92.07 | 77.90 | 58.80 | 52.81 | 72.34 | ||||||||||||
1932 | 46.58 | 61.90 | 58.29 | 72.83 | 77.84 | 81.13 | 90.00 | 91.84 | 84.27 | 74.29 | 61.97 | 39.45 | 70.03 | |||||||||||||
1933 | 57.17 | a | 49.75 | 65.39 | 71.20 | 82.00 | 95.83 | 98.10 | 90.35 | 90.27 | 76.32 | 63.10 | 60.71 | 75.02 | ||||||||||||
1934 | 55.23 | 55.82 | 64.97 | 74.20 | 83.77 | 93.43 | 100.74 | 96.42 | 84.93 | 81.03 | 64.90 | 54.58 | 75.84 | |||||||||||||
1935 | 49.38 | b | 56.43 | 68.23 | 71.17 | 69.23 | 86.53 | 94.32 | 94.29 | 83.03 | 76.77 | 53.27 | 46.77 | a | 70.78 | |||||||||||
1936 | 43.10 | 43.24 | 68.00 | a | 73.77 | 78.35 | 92.03 | 97.10 | 98.81 | 78.13 | 62.58 | ----- | z | 43.77 | 70.81 | a | ||||||||||
1937 | 34.71 | 49.19 | a | 51.71 | ----- | z | 86.71 | g | 88.73 | 99.68 | 97.77 | 88.10 | 75.35 | 60.27 | 51.23 | 69.67 | b | |||||||||
1938 | 55.52 | 62.57 | g | 68.48 | 71.15 | d | 77.55 | 88.70 | 94.45 | 97.77 | 86.90 | 77.03 | 60.33 | c | 55.00 | a | 75.72 | a | ||||||||
1939 | 53.32 | 48.60 | c | 65.00 | a | 71.72 | a | 81.06 | 91.80 | 97.10 | 92.03 | 89.80 | 76.87 | 61.00 | 55.61 | 73.66 | ||||||||||
1940 | 31.34 | b | 50.07 | 62.97 | a | 71.93 | b | 80.55 | 88.37 | 98.77 | 90.45 | 87.34 | a | 79.71 | 56.70 | c | 53.13 | a | 70.95 | |||||||
1941 | 46.97 | a | 50.19 | a | 54.10 | a | 67.50 | 75.84 | 82.40 | 89.97 | 89.06 | 85.32 | b | ----- | z | 62.60 | 52.55 | b | 68.77 | a | ||||||
1942 | 52.38 | b | 50.75 | 60.97 | a | 70.68 | b | 77.65 | 84.50 | 92.35 | 90.45 | 83.17 | a | 73.10 | 68.00 | a | 52.80 | a | 71.40 | |||||||
1943 | 55.03 | b | 64.48 | a | 64.10 | b | 79.37 | 76.81 | 91.13 | 95.32 | 97.65 | 86.27 | 78.35 | 63.77 | 42.07 | a | 74.53 | |||||||||
1944 | 41.50 | a | 54.34 | 61.63 | a | 68.10 | 77.77 | 88.27 | 90.45 | 93.06 | 85.13 | 72.74 | 59.28 | a | 45.21 | b | 69.79 | |||||||||
1945 | 48.77 | a | 51.00 | a | 66.10 | 66.64 | b | 80.67 | a | 84.97 | 92.50 | a | 92.94 | 87.14 | a | 71.68 | 62.50 | 47.61 | 71.04 | |||||||
1946 | 50.23 | a | 56.86 | 65.55 | 79.17 | a | 77.27 | a | ----- | z | 96.81 | 91.03 | 82.11 | b | 69.83 | a | 57.71 | b | 57.04 | c | 71.24 | a | ||||
1947 | 48.17 | b | 48.15 | a | 55.67 | a | 65.04 | b | 73.86 | b | 85.37 | 90.87 | 94.32 | 90.47 | 81.58 | g | 51.60 | 49.10 | 68.42 | a | ||||||
1948 | 43.35 | 41.34 | 49.32 | 73.37 | 79.45 | 87.27 | 93.84 | 90.10 | 86.80 | 74.19 | 55.03 | 52.29 | 68.86 | |||||||||||||
1949 | 36.47 | a | 48.64 | 57.74 | 66.23 | 76.71 | 84.83 | 89.84 | 89.48 | 81.73 | 73.32 | 69.30 | 50.94 | 68.77 | ||||||||||||
1950 | 52.73 | a | 59.93 | 60.58 | 70.20 | 80.06 | 87.57 | 84.68 | 86.32 | 75.57 | 79.32 | 61.24 | a | 52.68 | 70.91 | |||||||||||
1951 | 47.61 | 52.64 | 57.42 | 65.47 | 77.40 | a | 83.47 | 94.87 | 94.06 | 86.00 | a | 73.77 | 54.17 | 52.87 | a | 69.98 | ||||||||||
1952 | 56.74 | 57.36 | a | 55.97 | 68.93 | 79.90 | 96.03 | 94.29 | 97.03 | 86.53 | 74.90 | 56.00 | 45.68 | 72.45 | ||||||||||||
1953 | 56.74 | 54.25 | 65.45 | 68.77 | 78.63 | a | 98.40 | 93.77 | 91.58 | 90.97 | 74.74 | 58.73 | 48.65 | 73.39 | ||||||||||||
1954 | 50.71 | 64.43 | 57.55 | 74.97 | 71.03 | 91.27 | 99.65 | 95.03 | 90.97 | 73.97 | 65.83 | 55.13 | 74.21 | |||||||||||||
1955 | 49.97 | 51.79 | 63.26 | 74.80 | 80.06 | 86.00 | 93.71 | 93.97 | 85.63 | 76.87 | 60.47 | 53.32 | 72.49 | |||||||||||||
1956 | 50.58 | 46.69 | 64.19 | 72.23 | 85.19 | 93.47 | 93.52 | 95.32 | 91.03 | 79.65 | 59.53 | 56.77 | 74.02 | |||||||||||||
1957 | 46.55 | 57.43 | 55.13 | 63.27 | 70.55 | 83.63 | 97.10 | 93.26 | 82.69 | a | 68.19 | 53.10 | 59.42 | 69.19 | ||||||||||||
1958 | 49.26 | 47.89 | 42.94 | 63.17 | 80.48 | 92.38 | a | 90.16 | 92.87 | 85.43 | 73.74 | 61.30 | 50.48 | 69.18 | ||||||||||||
1959 | 43.40 | a | 51.50 | 60.42 | 68.30 | 79.77 | 90.73 | 89.77 | 94.87 | 85.73 | 68.32 | 56.43 | 51.71 | 70.08 | ||||||||||||
1960 | 42.90 | 43.52 | 53.48 | 75.03 | 80.94 | 89.13 | 88.81 | 92.58 | 83.70 | 71.48 | 62.63 | 46.26 | 69.21 | |||||||||||||
1961 | 50.58 | 53.08 | c | 52.69 | o | 70.67 | c | 76.83 | s | ----- | z | 92.67 | s | ----- | z | ----- | z | ----- | z | 49.58 | r | 47.04 | d | 55.34 | h | |
1962 | 44.50 | e | 61.41 | f | 62.25 | c | 72.15 | j | 87.06 | m | 83.70 | t | ----- | z | ----- | z | 85.26 | g | 77.55 | 61.43 | 55.06 | 60.16 | g | |||
1963 | 44.97 | 60.46 | 68.65 | 80.72 | a | 86.81 | 91.67 | 99.48 | 95.26 | 88.23 | 84.06 | 65.93 | 46.32 | 76.05 | ||||||||||||
1964 | 54.94 | 44.34 | 62.61 | 78.27 | 87.58 | 91.77 | 98.68 | 95.63 | a | 84.20 | 77.83 | b | 56.28 | e | 50.70 | a | 73.57 | |||||||||
1965 | 56.40 | a | 55.29 | 53.61 | 77.83 | 82.07 | a | 85.43 | 94.13 | 90.87 | a | 83.76 | a | 75.03 | 66.76 | a | 55.00 | 73.01 | ||||||||
1966 | 42.94 | 48.82 | 68.65 | 71.90 | 84.68 | 90.07 | 98.06 | 86.42 | 80.97 | 75.16 | 65.17 | a | 50.29 | 71.93 | ||||||||||||
1967 | 58.16 | 58.14 | 71.74 | 76.87 | 79.87 | a | 89.20 | 92.39 | 89.13 | 85.13 | 79.74 | 61.43 | 49.32 | 74.26 | ||||||||||||
1968 | 52.45 | 53.14 | 65.42 | 73.24 | a | 76.97 | 91.27 | 93.03 | 91.71 | 86.00 | 79.35 | 55.77 | 49.52 | 72.32 | ||||||||||||
1969 | 54.23 | 53.93 | a | 50.00 | 76.43 | b | 82.16 | 88.50 | 96.97 | 93.78 | d | 82.03 | 66.23 | 61.13 | 51.07 | a | 71.37 | |||||||||
1970 | 49.23 | 61.18 | 54.58 | 70.77 | 86.83 | a | 90.37 | 96.13 | a | 94.81 | 86.66 | a | 68.33 | a | 62.03 | 59.90 | 73.40 | |||||||||
1971 | 51.77 | 54.32 | 66.48 | 73.47 | 82.00 | 92.07 | 93.29 | 88.87 | 82.20 | 74.58 | 59.53 | 49.84 | 72.37 | |||||||||||||
1972 | 52.84 | 63.03 | 73.58 | 79.93 | 81.35 | 90.87 | 91.16 | 89.23 | 85.43 | 71.81 | 48.50 | 43.45 | 72.60 | |||||||||||||
1973 | 42.26 | 55.29 | 60.29 | 66.07 | 78.81 | 91.53 | 93.16 | 94.90 | 81.80 | 78.00 | a | 63.33 | 51.84 | 71.44 | ||||||||||||
1974 | 46.00 | 61.68 | 70.81 | 77.67 | 90.81 | 90.70 | 95.97 | 88.61 | 78.93 | 74.00 | 59.87 | 51.45 | 73.87 | |||||||||||||
1975 | 52.06 | 48.89 | 62.84 | 73.73 | 83.35 | 89.93 | 90.52 | 93.58 | 84.27 | 80.74 | 57.97 | 56.61 | 72.88 | |||||||||||||
1976 | 56.13 | a | 66.28 | 67.58 | 74.80 | 76.94 | 91.60 | 92.10 | 92.52 | 84.30 | 68.65 | 59.33 | 56.84 | 73.92 | ||||||||||||
1977 | 43.55 | 61.46 | 68.55 | 73.63 | 82.48 | 93.57 | 96.48 | 91.97 | 88.47 | 77.00 | 63.90 | 56.32 | 74.78 | |||||||||||||
1978 | 41.77 | 39.54 | 66.52 | 77.93 | 77.00 | 90.72 | a | 98.29 | 93.39 | 85.93 | 75.16 | 57.73 | 50.16 | 71.18 | ||||||||||||
1979 | 35.94 | 53.89 | 63.68 | 72.57 | 77.32 | 88.57 | 94.81 | 91.13 | 88.40 | 82.34 | b | 55.33 | 56.06 | 71.67 | ||||||||||||
1980 | 47.17 | a | 53.00 | 62.74 | 71.03 | 77.23 | 94.40 | 100.29 | 94.52 | 87.17 | 76.00 | 60.17 | 56.61 | 73.36 | ||||||||||||
1981 | 54.71 | 62.68 | 63.10 | 80.50 | 78.73 | a | 94.13 | 95.42 | 90.00 | 84.28 | a | 70.58 | 61.20 | 53.23 | 74.05 | |||||||||||
1982 | 53.48 | 48.33 | a | 65.07 | a | 73.67 | 79.00 | e | 83.36 | h | 92.76 | f | 93.33 | d | 88.25 | j | 74.57 | h | 60.19 | i | 49.03 | 65.99 | e | |||
1983 | 47.96 | e | 46.79 | d | 56.00 | h | 64.41 | h | 78.22 | h | 85.25 | f | 95.90 | b | 98.52 | b | 90.04 | g | 75.33 | j | 63.26 | g | 34.91 | h | 72.29 | h |
1984 | 47.23 | e | 60.00 | h | 60.16 | l | 67.14 | h | ----- | z | 90.68 | e | 94.23 | e | 92.39 | c | 83.65 | g | 69.17 | g | 61.64 | h | 51.44 | f | 81.13 | h |
1985 | 45.74 | h | 51.74 | e | 64.78 | h | 74.92 | e | 81.07 | d | 88.24 | i | 95.10 | b | 94.30 | a | 84.27 | 73.30 | a | 57.24 | a | 48.10 | a | 73.34 | c | |
1986 | 62.71 | 56.50 | 72.74 | 80.03 | 81.74 | 87.53 | 96.55 | 88.70 | a | 84.73 | 70.03 | 59.10 | 49.32 | 74.14 | ||||||||||||
1987 | 47.84 | 54.43 | 61.16 | 73.27 | 79.23 | 86.97 | 91.23 | 91.19 | 82.47 | 74.65 | 60.10 | 49.00 | 70.96 | |||||||||||||
1988 | 43.13 | 55.62 | 61.42 | 71.37 | 78.58 | 90.13 | 90.19 | 92.52 | 83.43 | 73.84 | 64.93 | 56.65 | 71.82 | |||||||||||||
1989 | 58.45 | 44.46 | 71.23 | 78.00 | 82.42 | 83.33 | 90.94 | 89.16 | 82.17 | 78.65 | 67.97 | 47.39 | 72.85 | |||||||||||||
1990 | 54.13 | 55.64 | 62.23 | 74.23 | 79.68 | 96.17 | a | 90.94 | 91.81 | 86.83 | 76.03 | 66.80 | 48.84 | 73.61 | ||||||||||||
1991 | 45.03 | 64.57 | 68.55 | 75.83 | 85.45 | 89.21 | a | 92.39 | 91.58 | 84.07 | 77.65 | 56.43 | 51.65 | 73.53 | ||||||||||||
1992 | 53.74 | 59.93 | 69.03 | b | 74.60 | 78.87 | 84.80 | 93.71 | 87.03 | 87.73 | 79.06 | 53.53 | 47.06 | 72.43 | ||||||||||||
1993 | 43.48 | 52.43 | 62.90 | 72.17 | 81.47 | a | 92.67 | 94.60 | a | 91.45 | 85.73 | 72.90 | 59.60 | 56.07 | a | 72.12 | ||||||||||
1994 | 54.41 | b | 50.92 | b | 66.05 | j | 73.85 | j | 79.30 | h | 94.96 | d | 94.88 | f | 93.43 | h | 85.80 | e | 74.59 | b | 62.20 | j | 59.00 | a | 69.95 | f |
1995 | 53.68 | c | 61.63 | a | 64.75 | c | 71.10 | a | 74.16 | 85.64 | b | 93.00 | 94.17 | a | 83.83 | 78.00 | 68.86 | b | 51.52 | 73.36 | ||||||
1996 | 54.20 | a | 61.28 | 64.87 | a | 77.33 | 91.10 | 91.86 | a | 91.93 | a | 87.52 | 81.17 | 76.00 | 63.30 | 54.52 | 74.59 | |||||||||
1997 | 50.74 | 51.19 | a | 72.29 | 63.14 | b | 77.19 | 89.27 | 96.58 | 90.29 | 89.52 | a | 75.03 | 58.55 | a | 45.23 | 71.58 | |||||||||
1998 | 54.87 | 56.29 | 58.81 | 71.97 | 88.19 | 98.14 | a | 98.42 | 93.84 | 93.43 | 81.40 | a | 70.03 | a | 53.97 | 76.61 | ||||||||||
1999 | 57.00 | 67.96 | 62.29 | 71.77 | 79.13 | 89.13 | 96.10 | 98.04 | d | 84.54 | f | 79.57 | a | 73.53 | 55.97 | 75.50 | a | |||||||||
2000 | 58.29 | 67.61 | k | 68.97 | 79.60 | 91.26 | 89.47 | 98.52 | b | 102.58 | 97.17 | 77.42 | 59.93 | b | 50.55 | 79.43 | a | |||||||||
2001 | 50.94 | 54.64 | 62.42 | 81.17 | 84.45 | 95.80 | 103.74 | 97.48 | 89.00 | 82.10 | 69.55 | a | 61.60 | a | 77.74 | |||||||||||
2002 | 55.97 | a | 58.16 | i | 69.38 | b | 78.50 | 85.81 | 93.00 | a | 94.47 | a | 96.55 | 88.70 | 44.67 | y | 51.17 | x | 49.35 | 79.08 | c | |||||
2003 | 55.97 | a | 53.52 | a | 68.20 | a | 77.13 | 85.69 | b | 84.93 | 96.77 | 97.04 | c | 81.31 | a | 76.07 | q | 63.80 | t | ----- | z | 77.84 | c | |||
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 49.70 | 54.08 | 62.75 | 72.99 | 80.22 | 89.74 | 94.49 | 92.78 | 85.63 | 75.24 | 60.63 | 51.67 | 72.44 | |||||||||||||
S.D. | 6.27 | 6.45 | 6.03 | 4.52 | 4.44 | 3.83 | 3.35 | 3.34 | 3.59 | 4.10 | 5.16 | 4.46 | 2.01 | |||||||||||||
SKEW | -0.61 | 0.02 | -0.71 | -0.24 | 0.32 | -0.04 | 0.03 | 0.18 | 0.25 | -0.48 | -0.09 | -0.13 | 0.15 | |||||||||||||
MAX | 62.71 | 67.96 | 73.58 | 81.17 | 91.26 | 98.40 | 103.74 | 102.58 | 97.17 | 84.06 | 73.53 | 61.60 | 77.74 | |||||||||||||
MIN | 31.34 | 39.54 | 42.94 | 63.14 | 69.23 | 81.13 | 84.68 | 85.71 | 75.57 | 62.58 | 46.13 | 39.45 | 68.77 | |||||||||||||
YRS | 75 | 71 | 71 | 71 | 70 | 70 | 72 | 74 | 70 | 69 | 69 | 74 | 59 |