YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 52.71 | q | 57.18 | 56.71 | 69.07 | 75.58 | 81.83 | 85.90 | 85.90 | 78.53 | 69.87 | 63.37 | 55.55 | b | 70.86 | a | ||||||||||
1942 | 54.06 | 56.46 | 62.33 | d | 70.46 | f | 81.48 | 88.90 | a | 89.23 | 88.06 | 82.63 | 73.81 | 74.97 | 65.92 | s | 75.19 | b | ||||||||
1943 | 57.60 | a | 62.79 | 67.74 | 80.33 | 83.48 | 91.93 | 92.18 | i | 96.19 | 82.83 | 74.70 | a | 64.31 | a | 50.63 | a | 73.87 | a | |||||||
1944 | 53.34 | b | 56.30 | b | 65.19 | 72.93 | a | 81.31 | b | 90.79 | b | 91.65 | 91.00 | a | 81.20 | 73.23 | 59.30 | 50.74 | 72.25 | |||||||
1945 | 54.10 | 62.36 | c | 67.77 | 73.79 | a | 85.87 | 90.41 | a | 89.27 | a | 89.03 | 85.50 | 70.48 | 66.73 | 55.48 | 74.23 | |||||||||
1946 | 47.81 | 61.50 | 68.16 | 80.17 | 81.03 | 91.83 | 93.42 | 91.90 | 80.90 | a | 73.77 | 60.78 | c | 58.29 | 74.13 | |||||||||||
1947 | 48.90 | 55.64 | 62.48 | 71.00 | 81.55 | 92.06 | n | 92.84 | 90.00 | 88.30 | 81.64 | c | 55.70 | 53.23 | 71.03 | a | ||||||||||
1948 | 47.47 | a | 51.45 | 57.42 | 76.87 | 82.61 | 91.00 | 92.90 | 92.10 | 85.80 | 74.70 | d | 58.76 | a | 57.19 | 72.36 | ||||||||||
1949 | 37.77 | 54.64 | 65.29 | 68.53 | 78.52 | h | 87.50 | 91.45 | 89.97 | 81.43 | 72.34 | b | 69.87 | 50.80 | a | 69.96 | a | |||||||||
1950 | 60.03 | 63.61 | 64.55 | i | 74.07 | 82.13 | 91.00 | 85.61 | 88.65 | 80.07 | 79.58 | 65.57 | 58.65 | 75.36 | a | |||||||||||
1951 | 52.61 | c | 56.07 | 60.61 | 70.47 | 78.61 | 89.60 | 94.71 | 92.47 | a | 86.17 | 77.03 | 59.11 | b | 52.77 | 72.52 | ||||||||||
1952 | 56.16 | 57.97 | 60.55 | 69.07 | 80.26 | 93.37 | 88.58 | 93.23 | 83.57 | 76.10 | 55.43 | 52.65 | 72.24 | |||||||||||||
1953 | 61.52 | 55.96 | 67.03 | 71.63 | 79.48 | 95.20 | 91.55 | 90.06 | 88.23 | 73.39 | 62.37 | 48.10 | 73.71 | |||||||||||||
1954 | 56.13 | 63.75 | 63.10 | a | 77.50 | 77.55 | 90.53 | 94.68 | 88.74 | 86.00 | 73.35 | 65.17 | 55.03 | 74.29 | ||||||||||||
1955 | 50.29 | 54.36 | 63.16 | 73.27 | 78.71 | 87.97 | 88.06 | 89.87 | 85.43 | 74.26 | 62.80 | 56.68 | 72.07 | |||||||||||||
1956 | 55.65 | 49.34 | 66.74 | 71.13 | 85.55 | 92.57 | 92.00 | 89.94 | 89.03 | 78.19 | 59.83 | 56.55 | 73.88 | |||||||||||||
1957 | 52.81 | 61.00 | 61.52 | 68.77 | 75.84 | 88.20 | 94.81 | 90.45 | 82.33 | 67.90 | 52.17 | 57.65 | 71.12 | |||||||||||||
1958 | 47.03 | 55.82 | 51.55 | 65.93 | 80.77 | 90.37 | 93.52 | 91.19 | 81.07 | 67.77 | 62.23 | 56.06 | 70.28 | |||||||||||||
1959 | 53.03 | 52.82 | 61.19 | 70.87 | 80.13 | 88.13 | 88.39 | 90.42 | 87.83 | 72.61 | 57.37 | 52.67 | a | 71.29 | ||||||||||||
1960 | 46.55 | 50.07 | 60.97 | 76.10 | 81.55 | 91.73 | 87.06 | 88.26 | 84.53 | 72.58 | 63.37 | 43.74 | 70.54 | |||||||||||||
1961 | 48.42 | 56.61 | e | 60.62 | e | 70.60 | 81.68 | 88.63 | 86.97 | 86.48 | 81.20 | 75.39 | 51.70 | 51.84 | 70.01 | |||||||||||
1962 | 46.58 | 62.89 | 58.42 | 73.13 | 86.13 | 88.47 | 88.65 | 91.97 | 80.97 | 73.06 | 63.03 | 53.93 | a | 72.27 | ||||||||||||
1963 | 47.23 | 56.00 | 63.90 | 76.13 | 82.19 | 86.73 | 93.32 | 89.87 | 83.70 | 79.10 | 63.57 | 48.61 | 72.53 | |||||||||||||
1964 | 50.26 | 44.76 | 60.77 | 72.70 | 82.29 | 88.90 | 93.45 | 90.90 | 80.10 | 75.16 | 60.20 | 51.55 | 70.92 | |||||||||||||
1965 | 56.16 | 51.39 | 54.97 | 73.10 | 78.61 | 86.43 | 92.13 | 86.94 | 80.93 | 74.03 | 66.83 | 55.19 | 71.39 | |||||||||||||
1966 | 45.10 | 50.82 | 65.81 | 71.60 | 78.87 | 85.70 | 94.35 | 85.32 | 81.53 | 72.10 | 66.00 | 53.52 | 70.89 | |||||||||||||
1967 | 55.03 | 56.43 | 70.16 | 76.77 | 80.71 | 86.13 | 88.58 | 85.16 | 80.63 | 76.32 | 62.60 | 46.55 | 72.09 | |||||||||||||
1968 | 50.27 | e | 54.76 | 59.61 | 66.76 | a | 76.71 | q | 91.50 | 87.10 | 87.39 | 82.87 | 75.81 | 58.27 | 54.71 | 69.91 | a | |||||||||
1969 | 59.18 | c | 56.36 | 52.48 | 73.77 | 80.13 | 86.27 | 95.00 | 93.94 | 81.17 | 68.19 | 60.53 | 56.13 | 71.93 | ||||||||||||
1970 | 49.35 | 58.93 | 56.93 | d | 71.83 | 81.90 | 87.13 | 89.78 | m | 91.32 | 81.23 | 67.06 | 62.00 | 59.68 | 69.76 | a | ||||||||||
1971 | 55.19 | 54.75 | 65.94 | 71.93 | 81.77 | 90.80 | ----- | z | 82.81 | 80.73 | 72.45 | 63.60 | 53.26 | 70.29 | a | |||||||||||
1972 | 56.65 | 61.82 | a | 72.35 | 77.97 | 80.19 | 88.77 | 87.35 | 85.39 | 81.33 | 72.16 | 53.37 | 53.58 | 72.58 | ||||||||||||
1973 | 46.32 | 51.54 | 60.42 | 65.24 | a | 77.87 | 88.90 | 89.06 | 90.94 | 80.40 | 76.84 | ----- | z | ----- | z | 72.75 | b | |||||||||
1974 | 57.62 | e | ----- | z | ----- | z | 74.37 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.21 | c | 61.07 | i |
1975 | 53.32 | 51.64 | 62.55 | 71.00 | 81.48 | 91.30 | 85.77 | 92.39 | 80.52 | a | 77.87 | ----- | z | ----- | z | 74.78 | b | |||||||||
1976 | 56.00 | 66.96 | a | 67.97 | 76.63 | 79.97 | 93.17 | 89.90 | 91.39 | 82.50 | 69.77 | a | 57.53 | 55.23 | 73.92 | |||||||||||
1977 | 48.87 | a | 59.79 | 65.73 | a | 72.59 | a | 83.84 | 95.83 | 95.71 | 93.10 | 90.67 | 75.84 | 66.47 | 59.61 | 75.67 | ||||||||||
1978 | 47.55 | 49.61 | 68.60 | a | 79.07 | 83.32 | 90.30 | 94.87 | 88.65 | 81.53 | 73.58 | 58.37 | 49.81 | 72.10 | ||||||||||||
1979 | 43.13 | 56.64 | 64.29 | 74.14 | a | 80.00 | b | 85.67 | 93.71 | 89.10 | 85.83 | 79.42 | 56.83 | 54.16 | 71.91 | |||||||||||
1980 | 52.32 | 57.41 | 64.00 | 72.17 | 79.26 | 97.43 | 98.94 | 92.23 | 83.23 | 71.71 | 58.93 | a | 59.23 | 73.90 | ||||||||||||
1981 | 54.29 | 61.43 | 62.48 | 77.50 | 80.26 | 93.70 | 92.70 | a | 86.00 | 82.00 | 70.90 | 66.87 | 58.26 | 73.87 | ||||||||||||
1982 | 51.74 | 53.86 | 66.93 | a | 72.52 | a | 79.65 | 89.10 | 92.48 | 91.84 | 86.23 | 72.43 | a | 58.90 | 47.65 | 71.94 | ||||||||||
1983 | 50.52 | 56.46 | 64.35 | 67.21 | a | 82.06 | 89.24 | a | 94.97 | 91.84 | 90.10 | 73.55 | 62.67 | 46.57 | a | 72.46 | ||||||||||
1984 | 49.71 | 59.72 | 65.10 | 72.00 | 83.32 | 86.20 | 89.10 | 86.74 | 85.67 | 68.84 | 63.20 | 56.48 | 72.17 | |||||||||||||
1985 | 49.26 | 54.68 | 67.97 | 77.53 | ----- | z | 86.03 | 92.77 | a | 92.90 | b | 84.96 | b | ----- | z | 69.14 | a | 54.77 | 73.00 | b | ||||||
1986 | 61.00 | 59.93 | 69.97 | ----- | z | ----- | z | 84.57 | 90.35 | 87.94 | 83.47 | 69.77 | 56.47 | 48.06 | 71.15 | b | ||||||||||
1987 | 51.06 | 54.68 | 61.03 | 72.52 | a | 78.74 | 88.45 | a | 91.94 | 89.37 | a | 80.80 | 75.61 | 60.93 | 51.13 | 71.36 | ||||||||||
1988 | 47.71 | 58.34 | 67.42 | 73.43 | 79.71 | 86.00 | 84.61 | 89.48 | d | 84.27 | h | 76.45 | 65.43 | 51.94 | 70.96 | a | ||||||||||
1989 | 56.16 | 52.54 | 73.84 | 79.77 | 88.06 | 88.17 | 90.00 | 88.42 | 79.80 | 76.55 | 64.70 | 49.65 | 73.97 | |||||||||||||
1990 | 54.61 | 58.07 | 63.65 | 73.43 | 82.26 | 99.47 | 86.94 | 86.58 | 81.30 | 75.23 | 64.10 | 52.87 | 73.21 | |||||||||||||
1991 | 49.03 | 60.21 | 65.97 | 77.10 | 86.61 | 88.93 | a | 84.42 | 85.29 | 76.00 | 75.10 | 56.07 | 49.58 | 71.19 | ||||||||||||
1992 | 45.87 | 58.38 | 67.32 | 76.23 | 76.07 | a | 86.60 | 90.90 | 86.97 | 84.77 | 77.90 | 58.20 | 52.13 | a | 71.78 | |||||||||||
1993 | 51.63 | a | 55.26 | a | 66.45 | b | 75.34 | a | 82.31 | b | 90.61 | b | 90.67 | a | 87.10 | a | 83.41 | a | 73.34 | b | 58.90 | 55.83 | a | 72.57 | ||
1994 | 54.06 | 59.93 | 65.77 | a | 75.62 | a | 80.74 | 96.79 | b | 93.47 | a | 92.00 | 85.90 | a | 73.79 | b | 63.00 | a | 56.61 | 74.81 | ||||||
1995 | 53.48 | 63.75 | 64.00 | 73.85 | c | 82.11 | c | 88.79 | a | 94.40 | a | 91.90 | 81.86 | b | 77.45 | b | 65.83 | 54.61 | 74.34 | |||||||
1996 | 56.58 | 62.25 | a | 64.83 | a | 76.12 | d | 91.94 | 91.82 | b | 91.52 | 86.94 | 79.50 | 73.58 | 62.40 | 58.35 | 74.65 | |||||||||
1997 | 47.38 | b | 51.93 | a | 69.13 | 67.53 | 79.68 | c | 90.10 | a | 92.07 | a | 90.60 | a | 86.97 | 72.67 | a | 59.37 | 46.30 | a | 71.14 | |||||
1998 | 56.61 | 56.18 | 63.03 | 72.83 | a | 89.48 | 96.38 | a | 93.96 | e | 89.73 | a | 90.20 | 75.90 | a | 64.03 | 54.74 | 75.26 | ||||||||
1999 | 59.00 | 66.29 | 66.45 | 72.63 | 80.77 | 88.19 | c | 90.57 | a | 91.71 | 86.18 | b | 79.54 | e | 70.96 | b | 54.58 | 75.57 | ||||||||
2000 | 60.47 | a | 67.39 | a | 69.00 | a | 81.28 | a | 91.93 | a | 90.32 | b | 93.77 | 93.63 | a | 91.00 | a | 72.34 | b | 51.00 | m | ----- | z | 81.11 | b | |
2001 | ----- | z | ----- | z | 63.00 | j | 79.22 | c | 84.00 | b | 94.52 | a | 95.96 | c | 93.06 | n | ----- | z | ----- | z | 63.21 | a | 55.65 | 78.76 | f | |
2002 | 56.41 | b | 58.07 | 66.52 | b | 79.96 | b | 87.14 | b | 94.70 | 92.71 | 95.00 | b | 83.50 | 68.48 | b | 58.97 | 50.32 | c | 74.32 | ||||||
2003 | 58.61 | 58.00 | 68.55 | b | 78.80 | 87.26 | 87.52 | a | 94.17 | a | 92.27 | a | 87.11 | c | 79.77 | a | 62.03 | 57.55 | 75.97 | |||||||
2004 | 56.55 | b | 53.38 | c | 69.43 | a | 70.24 | a | 86.13 | a | 91.37 | c | 89.73 | e | 86.03 | a | 82.80 | 74.70 | a | 55.50 | h | ----- | z | 76.04 | b | |
2005 | 63.80 | u | 56.26 | a | 63.39 | 74.45 | a | 80.31 | e | 93.17 | 94.80 | a | 87.61 | 86.50 | 73.23 | a | 67.00 | a | 57.83 | b | 75.87 | a | ||||
2006 | 62.24 | b | 60.43 | 67.87 | 81.59 | a | 91.52 | b | 96.28 | a | 95.79 | b | 84.48 | j | 79.37 | 73.23 | 66.60 | 55.06 | 75.45 | a | ||||||
2007 | 42.80 | a | 60.21 | 68.90 | 74.38 | a | 77.97 | 86.57 | 89.40 | a | 92.03 | a | 86.17 | a | 80.52 | 66.14 | b | 55.66 | b | 73.40 | ||||||
2008 | 55.23 | a | 63.93 | b | 69.28 | b | 77.38 | a | ----- | z | ----- | z | ----- | z | 85.78 | m | 82.33 | r | 74.55 | 66.43 | 58.84 | 66.52 | e | |||
2009 | 58.03 | b | 65.96 | 71.23 | a | 76.52 | e | 85.71 | 91.79 | b | 92.36 | c | 92.69 | b | 83.04 | b | 72.17 | a | 63.97 | 47.50 | a | 75.08 | ||||
2010 | 52.58 | 51.56 | a | 66.32 | 74.10 | 83.24 | b | 93.70 | 89.69 | b | 91.03 | 87.90 | a | 76.48 | 63.53 | 59.10 | 74.10 | |||||||||
2011 | 55.68 | 59.30 | a | 75.23 | a | 81.77 | 85.00 | a | 97.93 | 96.06 | 98.13 | a | 86.50 | 77.81 | 63.13 | 43.55 | b | 76.67 | ||||||||
2012 | 59.19 | 56.93 | 74.59 | b | 81.89 | b | 86.26 | 97.55 | a | 92.60 | a | 93.13 | 86.70 | 78.94 | ----- | z | ----- | z | 80.78 | b | ||||||
2013 | 54.19 | ----- | z | ----- | z | ----- | z | 83.48 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.84 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 52.70 | 57.34 | 64.80 | 74.11 | 82.20 | 90.37 | 91.42 | 89.96 | 83.71 | 74.26 | 62.14 | 53.51 | 72.94 | |||||||||||||
S.D. | 4.99 | 4.61 | 4.72 | 3.97 | 3.61 | 3.61 | 3.17 | 2.90 | 3.23 | 3.29 | 4.40 | 3.96 | 1.61 | |||||||||||||
SKEW | -0.36 | 0.02 | -0.42 | 0.01 | 0.81 | 0.44 | -0.28 | 0.03 | 0.32 | -0.05 | 0.01 | -0.55 | 0.30 | |||||||||||||
MAX | 62.24 | 67.39 | 75.23 | 81.89 | 91.94 | 99.47 | 98.94 | 98.13 | 91.00 | 81.64 | 74.97 | 59.68 | 76.67 | |||||||||||||
MIN | 37.77 | 44.76 | 51.55 | 65.24 | 75.58 | 81.83 | 84.42 | 82.81 | 76.00 | 67.06 | 51.70 | 43.55 | 70.01 | |||||||||||||
YRS | 70 | 70 | 69 | 70 | 67 | 69 | 67 | 68 | 68 | 69 | 66 | 66 | 50 |