YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.00 | q | ----- | z | ----- | z |
1962 | 70.00 | b | 85.00 | 86.00 | 88.00 | 100.00 | 96.00 | 97.00 | 99.00 | 94.00 | 90.00 | 79.00 | 75.00 | 100.00 | b | |||||||||||
1963 | 77.00 | 87.00 | 90.00 | 92.00 | 98.00 | 95.00 | 97.00 | 99.00 | 93.00 | q | 92.00 | 83.00 | d | 72.00 | 99.00 | u | ||||||||||
1964 | 71.00 | ----- | z | 81.00 | h | ----- | z | ----- | z | ----- | z | 99.00 | ----- | z | ----- | z | 89.00 | b | 82.00 | 77.00 | ----- | z | ||||
1965 | 75.00 | e | 78.00 | b | 80.00 | 94.00 | 93.00 | 92.00 | ----- | z | 96.00 | ----- | z | 92.00 | ----- | z | 73.00 | ----- | z | |||||||
1966 | ----- | z | ----- | z | 84.00 | ----- | z | ----- | z | 98.00 | 98.00 | a | 102.00 | 90.00 | 86.00 | 84.00 | 73.00 | ----- | z | |||||||
1967 | 78.00 | 80.00 | 89.00 | 90.00 | 96.00 | 96.00 | 97.00 | 98.00 | 97.00 | 93.00 | 85.00 | 70.00 | 98.00 | |||||||||||||
1968 | 70.00 | 72.00 | 83.00 | 83.00 | 92.00 | 102.00 | 97.00 | 98.00 | 93.00 | 90.00 | 80.00 | 70.00 | 102.00 | |||||||||||||
1969 | 78.00 | 75.00 | 77.00 | 85.00 | 94.00 | 102.00 | 101.00 | 101.00 | 90.00 | 90.00 | 77.00 | 75.00 | 102.00 | |||||||||||||
1970 | 78.00 | 83.00 | 77.00 | a | 86.00 | 95.00 | 104.00 | 102.00 | 100.00 | 98.00 | 87.00 | 80.00 | 77.00 | a | 104.00 | b | ||||||||||
1971 | 74.00 | 73.00 | 93.00 | 90.00 | 96.00 | 93.00 | 103.00 | 94.00 | 95.00 | 85.00 | 80.00 | 76.00 | 103.00 | |||||||||||||
1972 | 79.00 | 82.00 | 87.00 | 96.00 | 91.00 | 99.00 | 95.00 | 95.00 | 93.00 | 91.00 | 70.00 | 73.00 | 99.00 | |||||||||||||
1973 | 69.00 | 72.00 | 74.00 | 83.00 | 92.00 | 97.00 | 100.00 | 100.00 | 92.00 | a | 91.00 | 83.00 | 74.00 | a | 100.00 | b | ||||||||||
1974 | 79.00 | 73.00 | 87.00 | b | 92.00 | 100.00 | 100.00 | 103.00 | 94.00 | 92.00 | 82.00 | 78.00 | 70.00 | 103.00 | b | |||||||||||
1975 | 78.00 | a | 76.00 | 82.00 | 88.00 | 90.00 | 101.00 | 92.00 | 96.00 | 93.00 | 89.00 | 83.00 | 74.00 | 101.00 | a | |||||||||||
1976 | 70.00 | 81.00 | 86.00 | 86.00 | 98.00 | 98.00 | 95.00 | 96.00 | 90.00 | 85.00 | 77.00 | 75.00 | 98.00 | |||||||||||||
1977 | 62.00 | 80.00 | 82.00 | 84.00 | 90.00 | a | 102.00 | 98.00 | 98.00 | a | 98.00 | 97.00 | 79.00 | 77.00 | 102.00 | b | ||||||||||
1978 | 68.00 | 66.00 | 84.00 | 89.00 | 99.00 | 102.00 | 105.00 | 102.00 | 96.00 | 89.00 | 80.00 | 75.00 | 105.00 | |||||||||||||
1979 | 65.00 | 87.00 | 80.00 | 90.00 | 94.00 | 100.00 | 99.00 | 90.00 | 95.00 | 97.00 | 71.00 | 74.00 | 100.00 | |||||||||||||
1980 | 76.00 | 76.00 | 78.00 | 85.00 | 90.00 | 108.00 | 105.00 | 100.00 | 96.00 | 87.00 | 88.00 | 76.00 | 108.00 | |||||||||||||
1981 | 74.00 | 83.00 | 81.00 | 89.00 | 94.00 | 109.00 | 102.00 | 94.00 | 95.00 | 89.00 | 82.00 | 76.00 | 109.00 | |||||||||||||
1982 | 72.00 | 82.00 | 81.00 | 90.00 | 89.00 | 98.00 | 98.00 | 101.00 | 96.00 | 90.00 | 85.00 | 74.00 | 101.00 | |||||||||||||
1983 | 68.00 | 65.00 | 81.00 | 84.00 | 89.00 | 99.00 | 104.00 | 99.00 | 102.00 | 91.00 | 73.00 | 69.00 | 104.00 | |||||||||||||
1984 | 70.00 | 75.00 | 83.00 | 85.00 | 100.00 | 98.00 | 96.00 | 98.00 | 97.00 | 85.00 | 82.00 | 75.00 | 100.00 | |||||||||||||
1985 | 60.00 | 69.00 | 79.00 | 87.00 | 101.00 | 98.00 | 97.00 | 100.00 | 98.00 | 90.00 | 78.00 | 72.00 | 101.00 | |||||||||||||
1986 | 80.00 | 82.00 | 85.00 | 89.00 | 97.00 | 93.00 | 104.00 | 102.00 | 88.00 | 81.00 | 75.00 | 62.00 | 104.00 | |||||||||||||
1987 | 71.00 | 76.00 | 76.00 | 94.00 | 91.00 | 99.00 | a | 96.00 | 96.00 | 91.00 | 92.00 | 82.00 | 75.00 | 99.00 | a | |||||||||||
1988 | 68.00 | 77.00 | 85.00 | 83.00 | 91.00 | 102.00 | 95.00 | 97.00 | 91.00 | 89.00 | 83.00 | 70.00 | 102.00 | |||||||||||||
1989 | 71.00 | 84.00 | 94.00 | 98.00 | 100.00 | 93.00 | 104.00 | 98.00 | 92.00 | 92.00 | 81.00 | 76.00 | 104.00 | |||||||||||||
1990 | 76.00 | 79.00 | 84.00 | 88.00 | 97.00 | 108.00 | 97.00 | 99.00 | 97.00 | 86.00 | 85.00 | 72.00 | 108.00 | |||||||||||||
1991 | 64.00 | 76.00 | 85.00 | a | 88.00 | 94.00 | 94.00 | b | 98.00 | 97.00 | 92.00 | 92.00 | 73.00 | 72.00 | 98.00 | c | ||||||||||
1992 | 63.00 | 75.00 | 78.00 | 86.00 | 95.00 | 95.00 | 101.00 | 96.00 | 98.00 | 92.00 | 78.00 | 73.00 | 101.00 | |||||||||||||
1993 | 67.00 | 73.00 | a | 80.00 | 88.00 | 89.00 | 99.00 | 99.00 | a | 98.00 | 95.00 | 88.00 | 76.00 | 73.00 | 99.00 | b | ||||||||||
1994 | 78.00 | 76.00 | 86.00 | 86.00 | 91.00 | 109.00 | 103.00 | 100.00 | b | 95.00 | 91.00 | 84.00 | 75.00 | a | 109.00 | c | ||||||||||
1995 | 73.00 | 80.00 | a | 90.00 | 91.00 | 96.00 | 98.00 | 106.00 | 95.00 | 102.00 | 88.00 | 84.00 | 80.00 | b | 106.00 | c | ||||||||||
1996 | 75.00 | 87.00 | 83.00 | 95.00 | 103.00 | 104.00 | 100.00 | 96.00 | 89.00 | 89.00 | 87.00 | a | 77.00 | b | 104.00 | c | ||||||||||
1997 | 78.00 | 76.00 | 91.00 | a | 84.00 | 89.00 | 98.00 | a | 97.00 | a | 95.00 | 95.00 | 93.00 | 84.00 | 73.00 | 98.00 | c | |||||||||
1998 | 72.00 | b | 75.00 | 89.00 | 92.00 | d | 100.00 | 107.00 | 103.00 | 98.00 | a | 96.00 | 90.00 | 78.00 | 67.00 | b | 107.00 | i | ||||||||
1999 | 73.00 | 77.00 | 78.00 | 86.00 | a | 90.00 | d | 99.00 | 101.00 | a | 101.00 | 95.00 | 89.00 | 83.00 | 69.00 | 101.00 | f | |||||||||
2000 | 79.00 | 82.00 | a | 83.00 | 92.00 | 107.00 | 92.00 | d | 100.00 | 99.00 | 103.00 | 100.00 | 72.00 | d | 68.00 | 107.00 | i | |||||||||
2001 | 59.00 | 78.00 | 81.00 | 89.00 | b | 93.00 | 101.00 | d | 104.00 | c | 98.00 | c | 95.00 | 89.00 | 84.00 | 71.00 | 104.00 | l | ||||||||
2002 | 74.00 | 81.00 | 88.00 | a | 93.00 | 95.00 | b | 97.00 | a | 100.00 | c | 99.00 | c | 92.00 | 87.00 | 79.00 | c | 69.00 | 100.00 | m | ||||||
2003 | 79.00 | 77.00 | 84.00 | 91.00 | d | 102.00 | 95.00 | 101.00 | 105.00 | c | 95.00 | 91.00 | 84.00 | 77.00 | a | 105.00 | h | |||||||||
2004 | 74.00 | a | 78.00 | 88.00 | 85.00 | 99.00 | 98.00 | 97.00 | 96.00 | 94.00 | a | 85.00 | 75.00 | 71.00 | 99.00 | b | ||||||||||
2005 | 74.00 | 75.00 | 82.00 | 83.00 | j | 96.00 | 96.00 | 99.00 | d | 94.00 | 99.00 | a | 92.00 | a | 86.00 | 77.00 | 99.00 | p | ||||||||
2006 | 79.00 | 79.00 | 86.00 | 94.00 | 100.00 | 102.00 | a | 101.00 | 99.00 | b | 90.00 | 90.00 | 88.00 | 77.00 | 102.00 | c | ||||||||||
2007 | 71.00 | 75.00 | 81.00 | 82.00 | 89.00 | 93.00 | b | 94.00 | d | 99.00 | b | 95.00 | 91.00 | 82.00 | e | 78.00 | 99.00 | m | ||||||||
2008 | 74.00 | a | 77.00 | 85.00 | 88.00 | 97.00 | c | 104.00 | b | 97.00 | d | 100.00 | 91.00 | 88.00 | 80.00 | a | 81.00 | a | 104.00 | l | ||||||
2009 | 76.00 | 81.00 | 88.00 | 92.00 | 97.00 | 98.00 | 103.00 | b | 96.00 | f | 95.00 | 93.00 | 84.00 | 68.00 | 103.00 | h | ||||||||||
2010 | 73.00 | 64.00 | 90.00 | 92.00 | 93.00 | 102.00 | 93.00 | 97.00 | 99.00 | 88.00 | 79.00 | 79.00 | 102.00 | |||||||||||||
2011 | 74.00 | 83.00 | 90.00 | 95.00 | 103.00 | 111.00 | 106.00 | a | 105.00 | 102.00 | 90.00 | 79.00 | 68.00 | 111.00 | a | |||||||||||
2012 | 76.00 | 76.00 | 89.00 | 102.00 | 100.00 | 106.00 | 103.00 | 107.00 | 100.00 | 88.00 | 86.00 | 78.00 | 107.00 | |||||||||||||
2013 | 73.00 | 72.00 | 85.00 | 89.00 | 98.00 | 105.00 | 100.00 | 102.00 | 99.00 | 92.00 | 76.00 | 73.00 | 105.00 | |||||||||||||
2014 | 74.00 | 81.00 | a | 82.00 | 89.00 | 99.00 | 102.00 | 98.00 | 101.00 | 101.00 | 90.00 | 82.00 | 79.00 | 102.00 | a | |||||||||||
2015 | 73.00 | 84.00 | 84.00 | 88.00 | 84.00 | 94.00 | 97.00 | 98.00 | 98.00 | 92.00 | 78.00 | 76.00 | 98.00 | |||||||||||||
2016 | 80.00 | 85.00 | a | 85.00 | 86.00 | 91.00 | 101.00 | 104.00 | 99.00 | 91.00 | 91.00 | 86.00 | 76.00 | 104.00 | a | |||||||||||
2017 | 77.00 | 87.00 | 92.00 | 90.00 | 97.00 | 108.00 | 98.00 | 97.00 | 95.00 | 90.00 | 84.00 | 75.00 | 108.00 | |||||||||||||
2018 | 79.00 | 80.00 | 90.00 | 94.00 | 100.00 | 105.00 | 107.00 | 97.00 | 96.00 | 90.00 | 74.00 | 69.00 | 107.00 | |||||||||||||
2019 | 73.00 | 74.00 | 85.00 | 88.00 | 91.00 | 100.00 | 102.00 | 105.00 | 97.00 | 91.00 | 78.00 | 73.00 | 105.00 | |||||||||||||
2020 | 71.00 | 73.00 | 90.00 | 88.00 | 98.00 | 101.00 | 110.00 | 105.00 | 99.00 | 95.00 | a | 84.00 | 77.00 | 110.00 | a | |||||||||||
2021 | 66.00 | 78.00 | 80.00 | 91.00 | 95.00 | 102.00 | 97.00 | 98.00 | 101.00 | 96.00 | 85.00 | 81.00 | 102.00 | |||||||||||||
2022 | 72.00 | 76.00 | 88.00 | 96.00 | 103.00 | 105.00 | 105.00 | 104.00 | 94.00 | 89.00 | 77.00 | 72.00 | 105.00 | |||||||||||||
2023 | 74.00 | 76.00 | 82.00 | 89.00 | 95.00 | 105.00 | 105.00 | 107.00 | 102.00 | 90.00 | 88.00 | 75.00 | 107.00 | |||||||||||||
2024 | 69.00 | 83.00 | 81.00 | a | 85.00 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 72.79 | 77.84 | 84.31 | 89.27 | 95.43 | 100.13 | 100.08 | 98.82 | 95.41 | 89.95 | 80.69 | 73.77 | 103.04 | |||||||||||||
S.D. | 5.01 | 5.19 | 4.47 | 4.08 | 4.60 | 4.70 | 3.77 | 3.38 | 3.68 | 3.30 | 4.38 | 3.69 | 3.54 | |||||||||||||
SKEW | -0.76 | -0.37 | 0.01 | 0.57 | 0.03 | 0.26 | 0.20 | 0.38 | 0.15 | 0.13 | -0.45 | -0.48 | 0.40 | |||||||||||||
MAX | 80.00 | 87.00 | 94.00 | 102.00 | 107.00 | 111.00 | 110.00 | 107.00 | 103.00 | 100.00 | 88.00 | 81.00 | 111.00 | |||||||||||||
MIN | 59.00 | 64.00 | 74.00 | 82.00 | 84.00 | 92.00 | 92.00 | 90.00 | 88.00 | 81.00 | 70.00 | 62.00 | 98.00 | |||||||||||||
YRS | 62 | 61 | 62 | 59 | 60 | 61 | 61 | 60 | 59 | 62 | 61 | 62 | 48 |