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 | ----- | 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 | 69.00 | 77.00 | 91.00 | 95.00 | 99.00 | 95.00 | 92.00 | 82.00 | 72.00 | 60.00 | ----- | z | ||||||||||
1952 | 57.00 | 57.00 | 64.00 | 79.00 | 86.00 | 90.00 | 97.00 | 99.00 | 93.00 | 88.00 | 70.00 | 62.00 | 99.00 | |||||||||||||
1953 | 65.00 | 70.00 | 74.00 | 80.00 | 80.00 | 95.00 | 101.00 | 94.00 | 91.00 | 85.00 | 71.00 | 60.00 | 101.00 | |||||||||||||
1954 | 65.00 | 70.00 | 67.00 | 80.00 | a | 90.00 | 103.00 | 99.00 | 98.00 | 92.00 | 82.00 | 75.00 | 60.00 | 103.00 | a | |||||||||||
1955 | 60.00 | 63.00 | 70.00 | 79.00 | 87.00 | 99.00 | 100.00 | 96.00 | 104.00 | 85.00 | 75.00 | 60.00 | 104.00 | |||||||||||||
1956 | 64.00 | 58.00 | 83.00 | 81.00 | 90.00 | 99.00 | 98.00 | 95.00 | 95.00 | 84.00 | 75.00 | 65.00 | a | 99.00 | a | |||||||||||
1957 | 60.00 | 71.00 | 69.00 | 78.00 | 83.00 | 95.00 | 98.00 | 97.00 | 95.00 | 85.00 | 67.00 | 62.00 | 98.00 | |||||||||||||
1958 | 62.00 | 69.00 | 60.00 | 77.00 | 89.00 | 95.00 | 99.00 | 102.00 | 95.00 | 85.00 | 72.00 | 68.00 | 102.00 | |||||||||||||
1959 | 66.00 | 62.00 | 67.00 | 86.00 | 89.00 | a | 98.00 | 100.00 | 98.00 | 93.00 | 88.00 | 70.00 | a | 68.00 | 100.00 | b | ||||||||||
1960 | 53.00 | 53.00 | 75.00 | 80.00 | 95.00 | 95.00 | 102.00 | 102.00 | 92.00 | 80.00 | 75.00 | 61.00 | 102.00 | |||||||||||||
1961 | 67.00 | 65.00 | 70.00 | 80.00 | 85.00 | 103.00 | 100.00 | 95.00 | 84.00 | 82.00 | 65.00 | 58.00 | 103.00 | |||||||||||||
1962 | 65.00 | a | 65.00 | 72.00 | 85.00 | 85.00 | 96.00 | 95.00 | l | 100.00 | 92.00 | 81.00 | 78.00 | 68.00 | 100.00 | m | ||||||||||
1963 | 58.00 | 71.00 | 70.00 | 78.00 | 86.00 | 92.00 | 97.00 | 98.00 | 92.00 | 90.00 | 70.00 | a | 63.00 | 98.00 | a | |||||||||||
1964 | 68.00 | 62.00 | 72.00 | 78.00 | 88.00 | 95.00 | 98.00 | 95.00 | 90.00 | 90.00 | 70.00 | d | 65.00 | 98.00 | d | |||||||||||
1965 | 63.00 | 67.00 | 68.00 | 81.00 | a | 83.00 | 90.00 | 95.00 | 93.00 | 82.00 | 86.00 | 73.00 | 64.00 | 95.00 | a | |||||||||||
1966 | 55.00 | a | 52.00 | 80.00 | 78.00 | a | 86.00 | 91.00 | 98.00 | 98.00 | 94.00 | 80.00 | 72.00 | a | 60.00 | 98.00 | c | |||||||||
1967 | 57.00 | 70.00 | a | 70.00 | 70.00 | 92.00 | 92.00 | 99.00 | 98.00 | 90.00 | 80.00 | 77.00 | 58.00 | 99.00 | a | |||||||||||
1968 | 60.00 | 67.00 | 75.00 | 75.00 | 90.00 | 97.00 | 100.00 | 94.00 | 92.00 | 82.00 | 70.00 | a | 57.00 | 100.00 | a | |||||||||||
1969 | 60.00 | 56.00 | 73.00 | 81.00 | 91.00 | 95.00 | 101.00 | 99.00 | 95.00 | 84.00 | 70.00 | 66.00 | 101.00 | |||||||||||||
1970 | 62.00 | 68.00 | 70.00 | 73.00 | 90.00 | 106.00 | 102.00 | 100.00 | 92.00 | 85.00 | 70.00 | 60.00 | 106.00 | |||||||||||||
1971 | 67.00 | 70.00 | 75.00 | 78.00 | 81.00 | 98.00 | 100.00 | 98.00 | 95.00 | 85.00 | 70.00 | 50.00 | 100.00 | |||||||||||||
1972 | 57.00 | 76.00 | 79.00 | 77.00 | 90.00 | 100.00 | 104.00 | 100.00 | 86.00 | 82.00 | 62.00 | 62.00 | 104.00 | |||||||||||||
1973 | 57.00 | 57.00 | 60.00 | 78.00 | 89.00 | 100.00 | 102.00 | 100.00 | 90.00 | 82.00 | 75.00 | a | 60.00 | 102.00 | a | |||||||||||
1974 | 55.00 | 62.00 | 72.00 | 78.00 | 90.00 | 100.00 | 95.00 | 92.00 | 90.00 | 82.00 | 70.00 | 56.00 | 100.00 | |||||||||||||
1975 | 62.00 | 64.00 | 64.00 | 71.00 | 84.00 | 92.00 | 95.00 | 95.00 | 88.00 | 81.00 | a | 80.00 | 65.00 | 95.00 | a | |||||||||||
1976 | 67.00 | 70.00 | 70.00 | a | 75.00 | a | 85.00 | 97.00 | 96.00 | a | 90.00 | 92.00 | 85.00 | a | 78.00 | 67.00 | 97.00 | d | ||||||||
1977 | 60.00 | 72.00 | 66.00 | 80.00 | 90.00 | a | 90.00 | 95.00 | 96.00 | 96.00 | 80.00 | 75.00 | 64.00 | 96.00 | a | |||||||||||
1978 | 57.00 | a | 62.00 | 74.00 | 70.00 | 84.00 | 95.00 | 96.00 | a | 96.00 | 88.00 | 85.00 | 73.00 | 53.00 | 96.00 | b | ||||||||||
1979 | 45.00 | 59.00 | 65.00 | 74.00 | 86.00 | 95.00 | 93.00 | 95.00 | 90.00 | 86.00 | 65.00 | 70.00 | 95.00 | |||||||||||||
1980 | 55.00 | 67.00 | 60.00 | 80.00 | 84.00 | 91.00 | 96.00 | 98.00 | 86.00 | 89.00 | 77.00 | 72.00 | 98.00 | |||||||||||||
1981 | 69.00 | 67.00 | 65.00 | 86.00 | 85.00 | a | 96.00 | 95.00 | 98.00 | 85.00 | 80.00 | 73.00 | 65.00 | 98.00 | a | |||||||||||
1982 | 64.00 | d | 68.00 | a | 63.00 | e | 78.00 | 80.00 | 95.00 | a | 101.00 | a | 96.00 | 94.00 | 77.00 | 68.00 | 58.00 | 101.00 | l | |||||||
1983 | 63.00 | a | 67.00 | 69.00 | 71.00 | a | 94.00 | 93.00 | 100.00 | 98.00 | 94.00 | 78.00 | 76.00 | 55.00 | a | 100.00 | c | |||||||||
1984 | 65.00 | 66.00 | 69.00 | b | 80.00 | 95.00 | 101.00 | 101.00 | 95.00 | 93.00 | 80.00 | 70.00 | 56.00 | 101.00 | b | |||||||||||
1985 | 62.00 | a | 63.00 | 69.00 | 82.00 | 85.00 | 100.00 | 105.00 | 100.00 | 95.00 | 82.00 | l | 75.00 | b | 66.00 | 105.00 | o | |||||||||
1986 | 68.00 | a | 76.00 | 79.00 | 82.00 | 91.00 | a | 101.00 | 101.00 | a | 97.00 | 94.00 | 78.00 | 69.00 | c | 59.00 | a | 101.00 | g | |||||||
1987 | 60.00 | b | 63.00 | b | 68.00 | a | 85.00 | a | 85.00 | 100.00 | 99.00 | 96.00 | 94.00 | 92.00 | a | 68.00 | 64.00 | b | 100.00 | i | ||||||
1988 | 61.00 | 70.00 | 75.00 | 82.00 | 89.00 | b | 101.00 | 101.00 | 97.00 | a | 94.00 | 88.00 | a | 72.00 | a | 70.00 | 101.00 | e | ||||||||
1989 | 60.00 | 70.00 | 77.00 | 86.00 | 89.00 | a | 99.00 | 106.00 | 100.00 | 91.00 | 84.00 | a | 78.00 | 68.00 | 106.00 | b | ||||||||||
1990 | 71.00 | 68.00 | a | 75.00 | 83.00 | 84.00 | a | 102.00 | a | 102.00 | a | 103.00 | 97.00 | 86.00 | a | 75.00 | 66.00 | 103.00 | e | |||||||
1991 | 55.00 | 70.00 | 66.00 | 76.00 | 83.00 | 91.00 | a | 102.00 | 100.00 | a | 94.00 | 89.00 | a | 77.00 | 61.00 | 102.00 | c | |||||||||
1992 | 62.00 | 68.00 | 67.00 | 87.00 | 86.00 | 98.00 | 99.00 | 101.00 | 92.00 | 86.00 | a | 70.00 | 60.00 | b | 101.00 | c | ||||||||||
1993 | 57.00 | a | 52.00 | a | 74.00 | 79.00 | b | 88.00 | 96.00 | 100.00 | a | 103.00 | 95.00 | 77.00 | a | 66.00 | 64.00 | 103.00 | f | |||||||
1994 | 70.00 | 62.00 | a | 75.00 | 85.00 | 91.00 | 100.00 | 102.00 | 102.00 | 92.00 | 78.00 | 71.00 | 62.00 | 102.00 | a | |||||||||||
1995 | 62.00 | 76.00 | a | 73.00 | b | 74.00 | 83.00 | 95.00 | 103.00 | 100.00 | 100.00 | 84.00 | a | 78.00 | a | 67.00 | 103.00 | e | ||||||||
1996 | 68.00 | 74.00 | 75.00 | a | 84.00 | 95.00 | 99.00 | 105.00 | 103.00 | 95.00 | 92.00 | 75.00 | 61.00 | 105.00 | a | |||||||||||
1997 | 54.00 | a | 67.00 | a | 80.00 | b | 80.00 | b | 95.00 | 96.00 | a | 102.00 | 99.00 | 91.00 | b | 85.00 | a | 78.00 | b | 62.00 | 102.00 | l | ||||
1998 | 65.00 | a | 57.00 | a | 75.00 | a | 80.00 | 83.00 | 98.00 | a | 106.00 | a | 100.00 | a | 93.00 | 83.00 | 69.00 | 67.00 | 106.00 | f | ||||||
1999 | 67.00 | a | 69.00 | 74.00 | 80.00 | 88.00 | a | 98.00 | a | 101.00 | 99.00 | a | 93.00 | 88.00 | 79.00 | b | 65.00 | 101.00 | f | |||||||
2000 | 65.00 | a | 66.00 | 74.00 | a | 87.00 | a | 95.00 | a | 100.00 | 106.00 | 102.00 | 97.00 | a | 86.00 | a | 63.00 | c | 64.00 | 106.00 | i | |||||
2001 | 67.00 | a | 63.00 | b | 75.00 | 82.00 | a | 97.00 | b | 100.00 | a | 104.00 | b | 99.00 | 94.00 | 88.00 | a | 76.00 | 57.00 | a | 104.00 | k | ||||
2002 | 66.00 | b | 70.00 | a | 79.00 | a | 85.00 | d | 100.00 | b | 100.00 | 108.00 | a | 101.00 | 95.00 | a | 81.00 | c | 73.00 | a | 59.00 | a | 108.00 | q | ||
2003 | 67.00 | 70.00 | a | 75.00 | b | 78.00 | 96.00 | 96.00 | 100.00 | 96.00 | 94.00 | 85.00 | 63.00 | 62.00 | a | 100.00 | d | |||||||||
2004 | 57.00 | 60.00 | a | 85.00 | 78.00 | 83.00 | 91.00 | 95.00 | 95.00 | 92.00 | 78.00 | 68.00 | 65.00 | 95.00 | a | |||||||||||
2005 | 65.00 | 57.00 | 73.00 | 76.00 | 88.00 | a | 91.00 | 101.00 | 93.00 | 88.00 | b | 80.00 | 69.00 | 68.00 | a | 101.00 | d | |||||||||
2006 | 63.00 | 66.00 | 63.00 | 77.00 | 88.00 | 96.00 | 99.00 | a | 92.00 | 89.00 | 79.00 | 74.00 | 63.00 | 99.00 | a | |||||||||||
2007 | 58.00 | a | 63.00 | b | 79.00 | 84.00 | 88.00 | 98.00 | 103.00 | 96.00 | 94.00 | 78.00 | 75.00 | 68.00 | a | 103.00 | d | |||||||||
2008 | 51.00 | a | 65.00 | 68.00 | 78.00 | ----- | z | 98.00 | b | 97.00 | 96.00 | 95.00 | 88.00 | 75.00 | d | 64.00 | a | ----- | z | |||||||
2009 | 59.00 | 61.00 | 72.00 | a | 80.00 | 92.00 | 97.00 | b | 101.00 | a | 99.00 | 93.00 | 81.00 | 77.00 | 55.00 | 101.00 | d | |||||||||
2010 | 54.00 | 55.00 | 71.00 | ----- | z | 81.00 | 99.00 | 101.00 | 96.00 | 93.00 | 87.00 | a | 76.00 | 66.00 | ----- | z | ||||||||||
2011 | 61.00 | 63.00 | b | 73.00 | 77.00 | 79.00 | a | 93.00 | 98.00 | 97.00 | 93.00 | 85.00 | 66.00 | 61.00 | a | 98.00 | d | |||||||||
2012 | 65.00 | 59.00 | 74.00 | 85.00 | 94.00 | 98.00 | a | 109.00 | 97.00 | 96.00 | 86.00 | 77.00 | 62.00 | 109.00 | a | |||||||||||
2013 | 63.00 | 63.00 | a | 77.00 | b | 82.00 | a | 86.00 | b | 103.00 | ----- | z | 99.00 | e | 89.00 | 78.00 | 71.00 | ----- | z | ----- | z | |||||
2014 | 64.00 | 67.00 | 71.00 | 78.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 61.54 | 65.02 | 71.56 | 79.43 | 87.98 | 96.79 | 100.13 | 97.63 | 92.44 | 83.65 | 72.25 | 62.48 | 100.23 | |||||||||||||
S.D. | 5.11 | 5.78 | 5.43 | 4.09 | 4.63 | 3.71 | 3.39 | 2.90 | 3.57 | 3.84 | 4.30 | 4.43 | 3.18 | |||||||||||||
SKEW | -0.59 | -0.35 | -0.06 | -0.21 | 0.30 | -0.06 | 0.30 | -0.18 | -0.24 | 0.12 | -0.38 | -0.33 | 0.39 | |||||||||||||
MAX | 71.00 | 76.00 | 85.00 | 87.00 | 100.00 | 106.00 | 109.00 | 103.00 | 104.00 | 92.00 | 80.00 | 72.00 | 109.00 | |||||||||||||
MIN | 45.00 | 52.00 | 60.00 | 70.00 | 79.00 | 90.00 | 93.00 | 90.00 | 82.00 | 77.00 | 62.00 | 50.00 | 95.00 | |||||||||||||
YRS | 63 | 63 | 64 | 63 | 62 | 63 | 61 | 63 | 63 | 62 | 63 | 62 | 44 |