YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | 84.00 | 91.00 | 93.00 | 102.00 | 102.00 | 101.00 | 96.00 | 90.00 | 82.00 | 70.00 | ----- | z | ||||||||||
1995 | 70.00 | 77.00 | 83.00 | 83.00 | 90.00 | 96.00 | 101.00 | 104.00 | 101.00 | 90.00 | 79.00 | 78.00 | 104.00 | |||||||||||||
1996 | 74.00 | 79.00 | 78.00 | a | 89.00 | 98.00 | 100.00 | 98.00 | 98.00 | 91.00 | 92.00 | 83.00 | 75.00 | 100.00 | a | |||||||||||
1997 | 77.00 | 76.00 | 82.00 | 84.00 | 90.00 | 100.00 | 101.00 | 94.00 | 96.00 | 91.00 | 72.00 | 46.00 | 101.00 | |||||||||||||
1998 | 60.00 | 71.00 | 85.00 | 85.00 | 94.00 | 101.00 | 101.00 | 96.00 | 98.00 | 87.00 | 82.00 | 75.00 | a | 101.00 | a | |||||||||||
1999 | 71.00 | 76.00 | 82.00 | 83.00 | a | 89.00 | 93.00 | 100.00 | 100.00 | 99.00 | 91.00 | 85.00 | 72.00 | 100.00 | a | |||||||||||
2000 | 69.00 | 76.00 | 78.00 | 87.00 | 100.00 | 100.00 | 100.00 | 100.00 | a | 98.00 | 91.00 | 68.00 | 64.00 | 100.00 | a | |||||||||||
2001 | 72.00 | 67.00 | 75.00 | 85.00 | 90.00 | 100.00 | 102.00 | 98.00 | 95.00 | 88.00 | 83.00 | 71.00 | 102.00 | |||||||||||||
2002 | 72.00 | 72.00 | 81.00 | 89.00 | 95.00 | 103.00 | 102.00 | 103.00 | 98.00 | 87.00 | 77.00 | a | 69.00 | 103.00 | a | |||||||||||
2003 | 73.00 | 75.00 | 83.00 | 86.00 | 101.00 | 96.00 | 105.00 | 101.00 | 94.00 | 91.00 | 75.00 | 71.00 | 105.00 | |||||||||||||
2004 | 68.00 | 70.00 | 87.00 | 89.00 | 94.00 | 101.00 | 98.00 | 101.00 | 96.00 | 83.00 | 79.00 | 80.00 | 101.00 | |||||||||||||
2005 | 70.00 | 70.00 | 74.00 | a | 83.00 | a | 98.00 | 99.00 | 106.00 | 102.00 | 96.00 | 92.00 | 81.00 | 72.00 | 106.00 | b | ||||||||||
2006 | 74.00 | 75.00 | 80.00 | 91.00 | 96.00 | 103.00 | 101.00 | 99.00 | 93.00 | 87.00 | a | 85.00 | 68.00 | a | 103.00 | b | ||||||||||
2007 | 47.00 | 53.00 | 85.00 | 84.00 | 89.00 | 99.00 | 101.00 | a | 102.00 | 95.00 | 92.00 | 84.00 | 76.00 | 102.00 | a | |||||||||||
2008 | 66.00 | 68.00 | 81.00 | 88.00 | 95.00 | 101.00 | 102.00 | 104.00 | 90.00 | 83.00 | a | 81.00 | 68.00 | 104.00 | a | |||||||||||
2009 | 76.00 | 75.00 | 80.00 | 86.00 | 95.00 | 99.00 | 100.00 | 100.00 | 91.00 | 90.00 | 83.00 | a | 67.00 | 100.00 | a | |||||||||||
2010 | 63.00 | 57.00 | 85.00 | 87.00 | 95.00 | 101.00 | 101.00 | b | 99.00 | c | 100.00 | 85.00 | 80.00 | 74.00 | 101.00 | e | ||||||||||
2011 | 69.00 | 74.00 | 83.00 | 90.00 | 94.00 | 100.00 | 102.00 | 102.00 | 101.00 | 92.00 | 76.00 | 60.00 | 102.00 | |||||||||||||
2012 | 68.00 | 72.00 | 85.00 | 95.00 | 96.00 | 107.00 | 101.00 | 101.00 | 97.00 | 89.00 | 79.00 | 73.00 | 107.00 | |||||||||||||
2013 | 77.00 | a | 70.00 | 83.00 | a | 87.00 | 94.00 | 106.00 | 100.00 | 98.00 | a | 99.00 | 88.00 | 78.00 | 68.00 | 106.00 | c | |||||||||
2014 | 71.00 | a | 73.00 | 79.00 | a | 86.00 | 94.00 | 101.00 | 103.00 | 97.00 | 103.00 | 86.00 | 78.00 | 65.00 | 103.00 | b | ||||||||||
2015 | 72.00 | 83.00 | 89.00 | 83.00 | 87.00 | 98.00 | a | 101.00 | 100.00 | b | 99.00 | a | 96.00 | a | 82.00 | 73.00 | 101.00 | e | ||||||||
2016 | 74.00 | 82.00 | 80.00 | 84.00 | 91.00 | 103.00 | 103.00 | 97.00 | 97.00 | 91.00 | 87.00 | 69.00 | 103.00 | |||||||||||||
2017 | 66.00 | 87.00 | 88.00 | c | 89.00 | 95.00 | 102.00 | 99.00 | 96.00 | 95.00 | 87.00 | 84.00 | 75.00 | 102.00 | c | |||||||||||
2018 | 75.00 | a | 73.00 | 80.00 | 88.00 | a | 97.00 | a | 106.00 | 100.00 | 100.00 | 97.00 | 95.00 | 72.00 | 70.00 | a | 106.00 | d | ||||||||
2019 | 68.00 | 74.00 | 83.00 | 89.00 | 92.00 | 100.00 | 105.00 | 104.00 | 103.00 | 94.00 | 80.00 | 65.00 | 105.00 | |||||||||||||
2020 | 64.00 | 62.00 | f | 78.00 | c | 84.00 | a | 97.00 | 101.00 | 102.00 | 102.00 | 103.00 | 92.00 | 81.00 | 65.00 | 103.00 | j | |||||||||
2021 | 65.00 | 71.00 | 84.00 | 89.00 | b | 90.00 | 105.00 | 105.00 | 101.00 | 100.00 | 84.00 | 83.00 | 73.00 | 105.00 | b | |||||||||||
2022 | 62.00 | 72.00 | a | 84.00 | a | 89.00 | 96.00 | 103.00 | 104.00 | 100.00 | a | 99.00 | 90.00 | 79.00 | 69.00 | 104.00 | c | |||||||||
2023 | 66.00 | 71.00 | 80.00 | 91.00 | 88.00 | 98.00 | 103.00 | 105.00 | 100.00 | 92.00 | 83.00 | 71.00 | 105.00 | |||||||||||||
2024 | 65.00 | 75.00 | 73.00 | 80.00 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 68.80 | 72.90 | 81.68 | 87.13 | 93.77 | 100.80 | 101.63 | 100.17 | 97.33 | 89.53 | 80.03 | 69.73 | 103.08 | |||||||||||||
S.D. | 6.09 | 6.64 | 3.80 | 3.00 | 3.54 | 3.04 | 1.99 | 2.64 | 3.45 | 3.32 | 4.25 | 6.26 | 2.13 | |||||||||||||
SKEW | -1.47 | -0.91 | -0.37 | 0.39 | -0.06 | -0.15 | 0.36 | -0.27 | -0.30 | -0.30 | -0.98 | -1.75 | 0.07 | |||||||||||||
MAX | 77.00 | 87.00 | 89.00 | 95.00 | 101.00 | 107.00 | 106.00 | 105.00 | 103.00 | 96.00 | 87.00 | 80.00 | 107.00 | |||||||||||||
MIN | 47.00 | 53.00 | 73.00 | 83.00 | 87.00 | 93.00 | 98.00 | 94.00 | 90.00 | 83.00 | 68.00 | 46.00 | 100.00 | |||||||||||||
YRS | 30 | 29 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 26 |