YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | 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 | 93.00 | 94.00 | a | 78.00 | a | 66.00 | ----- | z | ||
1968 | 75.00 | 67.00 | 84.00 | 82.00 | 91.00 | a | 106.00 | 100.00 | 98.00 | 92.00 | 92.00 | 72.00 | 70.00 | 106.00 | a | |||||||||||
1969 | 78.00 | 74.00 | 75.00 | 85.00 | 89.00 | 100.00 | 100.00 | 102.00 | b | 94.00 | 88.00 | 73.00 | 68.00 | 102.00 | b | |||||||||||
1970 | 77.00 | 82.00 | 75.00 | 81.00 | 94.00 | 100.00 | 100.00 | 99.00 | 97.00 | a | 83.00 | 75.00 | a | 70.00 | 100.00 | b | ||||||||||
1971 | 75.00 | 68.00 | 83.00 | 80.00 | 89.00 | 104.00 | 106.00 | 94.00 | 99.00 | 84.00 | 82.00 | 74.00 | 106.00 | |||||||||||||
1972 | 72.00 | a | 80.00 | 84.00 | 90.00 | 92.00 | 96.00 | a | 99.00 | 94.00 | 93.00 | 88.00 | 70.00 | 62.00 | a | 99.00 | c | |||||||||
1973 | 65.00 | 70.00 | 70.00 | 82.00 | a | 85.00 | 102.00 | 103.00 | 99.00 | a | 89.00 | ----- | z | 82.00 | ----- | z | ----- | z | ||||||||
1974 | ----- | z | 70.00 | 82.00 | 90.00 | 98.00 | a | 104.00 | 101.00 | a | 96.00 | a | 96.00 | b | 88.00 | 75.00 | 68.00 | a | ----- | z | ||||||
1975 | 71.00 | a | 68.00 | a | 80.00 | 82.00 | 86.00 | a | 94.00 | 98.00 | c | 95.00 | a | 96.00 | b | 89.00 | 76.00 | 70.00 | 98.00 | i | ||||||
1976 | 70.00 | 78.00 | ----- | z | ----- | z | ----- | z | 101.00 | 97.00 | 98.00 | 95.00 | 86.00 | 76.00 | 69.00 | ----- | z | |||||||||
1977 | 66.00 | 69.00 | a | 80.00 | 86.00 | 89.00 | 101.00 | 102.00 | 103.00 | 94.00 | 86.00 | a | 80.00 | 74.00 | 103.00 | b | ||||||||||
1978 | 59.00 | a | 55.00 | a | 84.00 | a | ----- | z | 93.00 | 106.00 | 105.00 | 100.00 | 98.00 | 93.00 | 86.00 | 66.00 | ----- | z | ||||||||
1979 | 60.00 | a | 78.00 | 79.00 | 85.00 | a | ----- | z | ----- | z | ----- | z | 99.00 | 96.00 | 91.00 | a | 72.00 | a | 74.00 | ----- | z | |||||
1980 | 62.00 | 74.00 | a | 76.00 | 87.00 | a | 90.00 | 108.00 | 104.00 | 98.00 | 99.00 | 88.00 | 88.00 | a | 75.00 | a | 108.00 | d | ||||||||
1981 | 73.00 | a | 82.00 | 80.00 | a | 95.00 | a | 95.00 | c | 107.00 | 106.00 | 99.00 | 97.00 | 86.00 | a | 79.00 | a | 78.00 | a | 107.00 | i | |||||
1982 | 79.00 | c | 81.00 | 77.00 | 87.00 | 90.00 | 95.00 | 102.00 | 100.00 | 100.00 | 86.00 | 74.00 | a | 78.00 | 102.00 | d | ||||||||||
1983 | 69.00 | a | 67.00 | a | 76.00 | 84.00 | 90.00 | 104.00 | 102.00 | 101.00 | 101.00 | 87.00 | 78.00 | a | 65.00 | 104.00 | c | |||||||||
1984 | 67.00 | 72.00 | 78.00 | 80.00 | 97.00 | 98.00 | 101.00 | 101.00 | 98.00 | 85.00 | 78.00 | 74.00 | a | 101.00 | a | |||||||||||
1985 | 63.00 | a | 74.00 | 83.00 | 88.00 | 95.00 | 105.00 | 104.00 | 101.00 | 100.00 | 86.00 | 79.00 | a | 65.00 | 105.00 | b | ||||||||||
1986 | 78.00 | 76.00 | a | 84.00 | 90.00 | 90.00 | 98.00 | 101.00 | 100.00 | 92.00 | a | 79.00 | 72.00 | 58.00 | 101.00 | b | ||||||||||
1987 | 71.00 | 68.00 | 76.00 | 91.00 | 86.00 | 100.00 | 101.00 | 101.00 | a | 93.00 | 87.00 | 80.00 | 75.00 | 101.00 | a | |||||||||||
1988 | 68.00 | 72.00 | a | 83.00 | 87.00 | 91.00 | 99.00 | 103.00 | 102.00 | 97.00 | 86.00 | 80.00 | 74.00 | 103.00 | a | |||||||||||
1989 | 67.00 | 79.00 | 88.00 | a | 96.00 | 99.00 | 95.00 | 100.00 | 99.00 | 96.00 | 90.00 | 80.00 | 65.00 | 100.00 | a | |||||||||||
1990 | 75.00 | 68.00 | 78.00 | 83.00 | 92.00 | 107.00 | 104.00 | 101.00 | 99.00 | 90.00 | 82.00 | 70.00 | 107.00 | |||||||||||||
1991 | 59.00 | 73.00 | 79.00 | 83.00 | 92.00 | 99.00 | 104.00 | 99.00 | 91.00 | 92.00 | 74.00 | 69.00 | 104.00 | |||||||||||||
1992 | 68.00 | 72.00 | 77.00 | 88.00 | 97.00 | 95.00 | 103.00 | 97.00 | 94.00 | 89.00 | 69.00 | 67.00 | 103.00 | |||||||||||||
1993 | 65.00 | 65.00 | 78.00 | 84.00 | a | 90.00 | 101.00 | 105.00 | 102.00 | 94.00 | 91.00 | 72.00 | 71.00 | 105.00 | a | |||||||||||
1994 | 70.00 | 72.00 | 82.00 | 88.00 | a | 95.00 | 101.00 | 105.00 | 99.00 | 95.00 | 93.00 | 80.00 | 69.00 | 105.00 | a | |||||||||||
1995 | 74.00 | 76.00 | 86.00 | 83.00 | a | 86.00 | 98.00 | 100.00 | 100.00 | 102.00 | 90.00 | 78.00 | 76.00 | 102.00 | a | |||||||||||
1996 | 69.00 | 77.00 | 79.00 | 92.00 | 102.00 | a | 99.00 | 102.00 | 97.00 | 89.00 | 89.00 | 80.00 | a | 76.00 | 102.00 | b | ||||||||||
1997 | 76.00 | 72.00 | 82.00 | 83.00 | 92.00 | 102.00 | 103.00 | 96.00 | 97.00 | 90.00 | 71.00 | 59.00 | a | 103.00 | a | |||||||||||
1998 | 66.00 | 74.00 | 86.00 | 89.00 | 97.00 | 104.00 | 103.00 | 97.00 | 96.00 | 91.00 | 83.00 | 71.00 | 104.00 | |||||||||||||
1999 | 75.00 | 73.00 | 78.00 | 83.00 | 90.00 | 98.00 | 101.00 | 98.00 | 96.00 | 88.00 | 79.00 | 74.00 | 101.00 | |||||||||||||
2000 | 67.00 | 78.00 | 76.00 | 89.00 | 102.00 | 98.00 | 101.00 | 104.00 | c | 102.00 | 93.00 | 69.00 | 63.00 | 104.00 | c | |||||||||||
2001 | 67.00 | 65.00 | 72.00 | 87.00 | 93.00 | 99.00 | 102.00 | 99.00 | 100.00 | 89.00 | 86.00 | 74.00 | 102.00 | |||||||||||||
2002 | 76.00 | 77.00 | 84.00 | 93.00 | 95.00 | 103.00 | 104.00 | 106.00 | 93.00 | 86.00 | 77.00 | 69.00 | 106.00 | |||||||||||||
2003 | 75.00 | 76.00 | 83.00 | 88.00 | 101.00 | 96.00 | 104.00 | 104.00 | 94.00 | 92.00 | 78.00 | 68.00 | 104.00 | |||||||||||||
2004 | 66.00 | 75.00 | 86.00 | 85.00 | 99.00 | 102.00 | 100.00 | 97.00 | 98.00 | 85.00 | 78.00 | 75.00 | 102.00 | |||||||||||||
2005 | 72.00 | 73.00 | 77.00 | 85.00 | 97.00 | 101.00 | 106.00 | 101.00 | 98.00 | 92.00 | 83.00 | 72.00 | 106.00 | |||||||||||||
2006 | 80.00 | 74.00 | 80.00 | 94.00 | 101.00 | 104.00 | 102.00 | 101.00 | 93.00 | 90.00 | 84.00 | 66.00 | 104.00 | |||||||||||||
2007 | 43.00 | 57.00 | 84.00 | 83.00 | 87.00 | 98.00 | 100.00 | 103.00 | 100.00 | 91.00 | 80.00 | 74.00 | 103.00 | |||||||||||||
2008 | 70.00 | 69.00 | 81.00 | 90.00 | 92.00 | 105.00 | 102.00 | 105.00 | 88.00 | 86.00 | 80.00 | 70.00 | 105.00 | |||||||||||||
2009 | 70.00 | 73.00 | 82.00 | 87.00 | 91.00 | 100.00 | 102.00 | 98.00 | 93.00 | 93.00 | 82.00 | 65.00 | 102.00 | |||||||||||||
2010 | 62.00 | 59.00 | 87.00 | 88.00 | 93.00 | 102.00 | 101.00 | 100.00 | 99.00 | 86.00 | 79.00 | a | 72.00 | 102.00 | a | |||||||||||
2011 | 67.00 | 78.00 | 83.00 | 90.00 | 98.00 | 104.00 | 106.00 | 106.00 | 102.00 | 92.00 | 74.00 | 67.00 | 106.00 | |||||||||||||
2012 | 68.00 | 71.00 | 84.00 | 92.00 | 95.00 | 106.00 | 103.00 | 105.00 | 98.00 | 88.00 | 79.00 | 68.00 | 106.00 | |||||||||||||
2013 | 73.00 | 69.00 | 82.00 | 87.00 | 98.00 | 107.00 | 103.00 | 102.00 | 104.00 | 86.00 | 79.00 | 70.00 | 107.00 | |||||||||||||
2014 | 67.00 | 74.00 | 78.00 | 88.00 | 95.00 | 100.00 | 107.00 | 101.00 | 101.00 | 88.00 | 80.00 | 65.00 | 107.00 | |||||||||||||
2015 | 75.00 | 80.00 | 85.00 | 84.00 | 86.00 | 102.00 | 101.00 | 99.00 | 101.00 | 92.00 | 81.00 | 70.00 | 102.00 | |||||||||||||
2016 | 71.00 | 85.00 | 84.00 | 86.00 | 87.00 | 99.00 | 104.00 | 98.00 | 95.00 | 98.00 | 88.00 | 73.00 | 104.00 | |||||||||||||
2017 | 70.00 | 83.00 | 88.00 | 87.00 | 92.00 | 102.00 | 102.00 | 91.00 | 93.00 | 87.00 | 82.00 | 74.00 | 102.00 | |||||||||||||
2018 | 77.00 | 76.00 | 87.00 | 91.00 | 95.00 | 105.00 | 107.00 | 98.00 | 100.00 | 93.00 | 70.00 | 66.00 | 107.00 | |||||||||||||
2019 | 66.00 | 76.00 | 83.00 | 89.00 | 93.00 | 99.00 | 104.00 | 103.00 | 101.00 | 92.00 | 78.00 | 70.00 | 104.00 | |||||||||||||
2020 | 65.00 | 78.00 | 83.00 | 85.00 | 98.00 | 106.00 | 104.00 | 102.00 | 102.00 | a | 92.00 | 83.00 | 66.00 | 106.00 | a | |||||||||||
2021 | 67.00 | a | 74.00 | 89.00 | 91.00 | 92.00 | 108.00 | 103.00 | 104.00 | 105.00 | 90.00 | 84.00 | 74.00 | 108.00 | a | |||||||||||
2022 | 62.00 | 72.00 | 86.00 | a | 90.00 | 99.00 | 107.00 | 109.00 | 102.00 | 98.00 | 88.00 | 77.00 | 72.00 | 109.00 | a | |||||||||||
2023 | 68.00 | 75.00 | 80.00 | 93.00 | 93.00 | 98.00 | 103.00 | 101.00 | 101.00 | 90.00 | 86.00 | 74.00 | 103.00 | |||||||||||||
2024 | 62.00 | 77.00 | 78.00 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 69.07 | 73.16 | 81.14 | 87.15 | 93.22 | 101.42 | 102.64 | 99.91 | 96.79 | 89.00 | 78.42 | 69.95 | 103.84 | |||||||||||||
S.D. | 6.36 | 5.96 | 4.15 | 3.86 | 4.43 | 3.71 | 2.35 | 3.05 | 3.84 | 3.26 | 4.71 | 4.46 | 2.34 | |||||||||||||
SKEW | -1.11 | -0.79 | -0.34 | 0.17 | 0.12 | -0.00 | 0.21 | -0.28 | -0.15 | -0.18 | -0.15 | -0.45 | 0.17 | |||||||||||||
MAX | 80.00 | 85.00 | 89.00 | 96.00 | 102.00 | 108.00 | 109.00 | 106.00 | 105.00 | 98.00 | 88.00 | 78.00 | 109.00 | |||||||||||||
MIN | 43.00 | 55.00 | 70.00 | 80.00 | 85.00 | 94.00 | 97.00 | 91.00 | 88.00 | 79.00 | 69.00 | 58.00 | 99.00 | |||||||||||||
YRS | 56 | 57 | 56 | 54 | 54 | 55 | 55 | 56 | 57 | 56 | 57 | 56 | 49 |