YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 98.00 | 99.00 | 94.00 | 89.00 | 80.00 | 73.00 | ----- | z | ||||||
1963 | 75.00 | 81.00 | 87.00 | 89.00 | 97.00 | 96.00 | 100.00 | 96.00 | 93.00 | 90.00 | 80.00 | 72.00 | 100.00 | |||||||||||||
1964 | 72.00 | 62.00 | 80.00 | 90.00 | 99.00 | 99.00 | 103.00 | 103.00 | 96.00 | a | 89.00 | 82.00 | 77.00 | 103.00 | a | |||||||||||
1965 | 75.00 | 75.00 | 79.00 | 98.00 | 97.00 | 100.00 | 99.00 | 98.00 | 95.00 | 93.00 | 81.00 | 73.00 | 100.00 | |||||||||||||
1966 | 68.00 | 70.00 | 84.00 | 86.00 | 95.00 | 97.00 | 101.00 | 104.00 | 90.00 | 86.00 | 85.00 | 76.00 | 104.00 | |||||||||||||
1967 | 79.00 | 80.00 | 91.00 | 91.00 | 96.00 | 99.00 | 97.00 | 101.00 | 94.00 | d | 94.00 | 85.00 | ----- | z | ----- | z | ||||||||||
1968 | ----- | z | ----- | z | ----- | z | 84.00 | 96.00 | 105.00 | ----- | z | 91.00 | s | 92.00 | 89.00 | 80.00 | 71.00 | ----- | z | |||||||
1969 | 79.00 | 73.00 | 76.00 | 84.00 | 94.00 | 101.00 | 99.00 | 101.00 | 90.00 | 90.00 | 78.00 | 75.00 | 101.00 | |||||||||||||
1970 | 80.00 | 82.00 | 77.00 | a | 85.00 | 92.00 | 101.00 | 103.00 | 102.00 | 100.00 | 84.00 | 80.00 | 79.00 | 103.00 | a | |||||||||||
1971 | 77.00 | 76.00 | 91.00 | 91.00 | ----- | z | 92.00 | 101.00 | 89.00 | d | 91.00 | 85.00 | 80.00 | 76.00 | ----- | z | ||||||||||
1972 | 79.00 | 81.00 | 85.00 | 94.00 | 93.00 | 101.00 | 98.00 | 97.00 | 90.00 | 88.00 | a | 73.00 | 70.00 | 101.00 | a | |||||||||||
1973 | 68.00 | 70.00 | 73.00 | 82.00 | a | 95.00 | 101.00 | d | 102.00 | j | 103.00 | 98.00 | 96.00 | 85.00 | d | 78.00 | 103.00 | s | ||||||||
1974 | 80.00 | 77.00 | 88.00 | 93.00 | 104.00 | a | 104.00 | l | 99.00 | a | ----- | z | ----- | z | 85.00 | 77.00 | 69.00 | ----- | z | |||||||
1975 | 82.00 | 75.00 | a | 82.00 | 89.00 | 91.00 | 102.00 | 96.00 | 96.00 | 90.00 | 88.00 | 85.00 | 77.00 | 102.00 | a | |||||||||||
1976 | 70.00 | 80.00 | 84.00 | 87.00 | 94.00 | 104.00 | 94.00 | 101.00 | 91.00 | 86.00 | 77.00 | 72.00 | 104.00 | |||||||||||||
1977 | 63.00 | 77.00 | 80.00 | 84.00 | 100.00 | 105.00 | 99.00 | 99.00 | ----- | z | ----- | z | 79.00 | a | 75.00 | ----- | z | |||||||||
1978 | 68.00 | 67.00 | 83.00 | 91.00 | 99.00 | 105.00 | 105.00 | 99.00 | 94.00 | 89.00 | 79.00 | 74.00 | 105.00 | |||||||||||||
1979 | 71.00 | 82.00 | 80.00 | 89.00 | 92.00 | a | 100.00 | 101.00 | 97.00 | 101.00 | 97.00 | 74.00 | 71.00 | 101.00 | a | |||||||||||
1980 | 74.00 | 80.00 | 78.00 | 88.00 | b | 92.00 | a | 106.00 | a | 103.00 | 99.00 | 97.00 | 87.00 | 85.00 | ----- | z | ----- | z | ||||||||
1981 | 73.00 | 81.00 | a | 81.00 | a | 88.00 | 94.00 | 109.00 | a | 99.00 | 91.00 | 94.00 | 86.00 | 82.00 | 76.00 | 109.00 | c | |||||||||
1982 | 71.00 | 80.00 | 83.00 | 89.00 | 94.00 | 98.00 | 96.00 | 100.00 | 95.00 | 87.00 | 82.00 | 73.00 | 100.00 | |||||||||||||
1983 | 69.00 | 70.00 | 80.00 | 85.00 | 91.00 | 98.00 | 103.00 | 101.00 | 101.00 | 89.00 | 76.00 | 69.00 | 103.00 | |||||||||||||
1984 | 67.00 | 76.00 | 81.00 | 88.00 | 100.00 | 97.00 | 95.00 | 95.00 | 98.00 | 82.00 | 80.00 | 78.00 | 100.00 | |||||||||||||
1985 | 70.00 | 72.00 | 79.00 | 87.00 | 97.00 | 97.00 | 98.00 | 100.00 | 96.00 | 88.00 | a | 78.00 | 71.00 | 100.00 | a | |||||||||||
1986 | 78.00 | 83.00 | 84.00 | 89.00 | 98.00 | 100.00 | 99.00 | 104.00 | 92.00 | 83.00 | 77.00 | 67.00 | 104.00 | |||||||||||||
1987 | 73.00 | 77.00 | 76.00 | 94.00 | 89.00 | 100.00 | c | 102.00 | 98.00 | 91.00 | 91.00 | 80.00 | 77.00 | 102.00 | c | |||||||||||
1988 | 70.00 | 77.00 | 86.00 | 84.00 | 96.00 | 97.00 | 94.00 | 96.00 | 91.00 | 91.00 | 84.00 | 69.00 | 97.00 | |||||||||||||
1989 | 69.00 | 85.00 | 92.00 | 98.00 | 102.00 | 99.00 | 103.00 | 101.00 | 93.00 | 91.00 | 81.00 | 72.00 | 103.00 | |||||||||||||
1990 | 75.00 | 80.00 | 83.00 | 89.00 | 97.00 | 110.00 | 96.00 | 96.00 | 94.00 | 86.00 | 84.00 | 75.00 | 110.00 | |||||||||||||
1991 | 67.00 | 75.00 | ----- | z | 89.00 | 99.00 | 102.00 | 96.00 | 96.00 | n | 91.00 | 92.00 | 80.00 | 70.00 | ----- | z | ||||||||||
1992 | 68.00 | 76.00 | 80.00 | a | 92.00 | 94.00 | a | 96.00 | b | 105.00 | 97.00 | 95.00 | 91.00 | 77.00 | 74.00 | 105.00 | d | |||||||||
1993 | 67.00 | 73.00 | 84.00 | 90.00 | 91.00 | 98.00 | 101.00 | 97.00 | 93.00 | 88.00 | 76.00 | 72.00 | 101.00 | |||||||||||||
1994 | 76.00 | 76.00 | 85.00 | 86.00 | 94.00 | 110.00 | 103.00 | 104.00 | 96.00 | 93.00 | 83.00 | 72.00 | 110.00 | |||||||||||||
1995 | 73.00 | 78.00 | 89.00 | 89.00 | 97.00 | 98.00 | 107.00 | 96.00 | 101.00 | 87.00 | 81.00 | 76.00 | 107.00 | |||||||||||||
1996 | 71.00 | 83.00 | 82.00 | 96.00 | 102.00 | 103.00 | 98.00 | 96.00 | a | 89.00 | 91.00 | 84.00 | 74.00 | 103.00 | a | |||||||||||
1997 | 77.00 | 76.00 | 90.00 | 86.00 | 92.00 | 100.00 | 101.00 | 94.00 | 98.00 | 91.00 | 79.00 | 74.00 | 101.00 | |||||||||||||
1998 | 73.00 | a | 76.00 | 75.00 | g | 91.00 | 101.00 | 109.00 | 107.00 | 97.00 | 99.00 | 91.00 | 82.00 | 73.00 | 109.00 | h | ||||||||||
1999 | 78.00 | 80.00 | 81.00 | 89.00 | 92.00 | 100.00 | a | 98.00 | b | 98.00 | 95.00 | 89.00 | 83.00 | 69.00 | 100.00 | c | ||||||||||
2000 | 80.00 | 81.00 | 81.00 | 93.00 | 107.00 | 99.00 | 101.00 | 99.00 | 102.00 | 99.00 | a | 74.00 | 72.00 | 107.00 | a | |||||||||||
2001 | 65.00 | 76.00 | 80.00 | 90.00 | 96.00 | 105.00 | 103.00 | 100.00 | 95.00 | 88.00 | 86.00 | 70.00 | 105.00 | |||||||||||||
2002 | 76.00 | 79.00 | 86.00 | 93.00 | 97.00 | 100.00 | 101.00 | 103.00 | 95.00 | 88.00 | 77.00 | 70.00 | 103.00 | |||||||||||||
2003 | 76.00 | 77.00 | 83.00 | 90.00 | 103.00 | 98.00 | 103.00 | 105.00 | 95.00 | 91.00 | 81.00 | b | 80.00 | d | 105.00 | f | ||||||||||
2004 | 72.00 | 77.00 | 86.00 | a | 84.00 | a | 97.00 | 104.00 | 100.00 | 99.00 | 96.00 | 83.00 | 78.00 | 75.00 | 104.00 | b | ||||||||||
2005 | 78.00 | 76.00 | 82.00 | a | 87.00 | 103.00 | a | 101.00 | 104.00 | 97.00 | 98.00 | 91.00 | 87.00 | g | 78.00 | a | 104.00 | j | ||||||||
2006 | 79.00 | 78.00 | 85.00 | 94.00 | 101.00 | 103.00 | 103.00 | a | 101.00 | a | 91.00 | 91.00 | 86.00 | 77.00 | f | 103.00 | h | |||||||||
2007 | 71.00 | 77.00 | 87.00 | 85.00 | 89.00 | 98.00 | 97.00 | 105.00 | 95.00 | 92.00 | 84.00 | 78.00 | 105.00 | |||||||||||||
2008 | 72.00 | 80.00 | 85.00 | 89.00 | 98.00 | 104.00 | 99.00 | 101.00 | 90.00 | 89.00 | 84.00 | 80.00 | 104.00 | |||||||||||||
2009 | 77.00 | 83.00 | 87.00 | 92.00 | 100.00 | 101.00 | 104.00 | 100.00 | 96.00 | 96.00 | 83.00 | 67.00 | 104.00 | |||||||||||||
2010 | 71.00 | 68.00 | 87.00 | 87.00 | 96.00 | 106.00 | 94.00 | 101.00 | 100.00 | 89.00 | 81.00 | 81.00 | 106.00 | |||||||||||||
2011 | 76.00 | 83.00 | 88.00 | 95.00 | 101.00 | 111.00 | 103.00 | 105.00 | 101.00 | 91.00 | 82.00 | 63.00 | 111.00 | |||||||||||||
2012 | 76.00 | 76.00 | 88.00 | 99.00 | 98.00 | 105.00 | 100.00 | 106.00 | 97.00 | 90.00 | 84.00 | 76.00 | 106.00 | |||||||||||||
2013 | 76.00 | 72.00 | 86.00 | 90.00 | 101.00 | 105.00 | 99.00 | 101.00 | 96.00 | 93.00 | 78.00 | 73.00 | 105.00 | |||||||||||||
2014 | 74.00 | 82.00 | 82.00 | 88.00 | 96.00 | 103.00 | 102.00 | 98.00 | 101.00 | 89.00 | 79.00 | 74.00 | 103.00 | |||||||||||||
2015 | 76.00 | 80.00 | 86.00 | 86.00 | 86.00 | 99.00 | 98.00 | 100.00 | 97.00 | 91.00 | 82.00 | 74.00 | 100.00 | |||||||||||||
2016 | 74.00 | 85.00 | 81.00 | 86.00 | 92.00 | 104.00 | 110.00 | 99.00 | 94.00 | 92.00 | 85.00 | 72.00 | 110.00 | |||||||||||||
2017 | 78.00 | 86.00 | 92.00 | 91.00 | 97.00 | 110.00 | 97.00 | 93.00 | 98.00 | 88.00 | 84.00 | 76.00 | 110.00 | |||||||||||||
2018 | 76.00 | 79.00 | 88.00 | 91.00 | 99.00 | 106.00 | 103.00 | 98.00 | 95.00 | 90.00 | 77.00 | 69.00 | 106.00 | |||||||||||||
2019 | 73.00 | 75.00 | 86.00 | 90.00 | 90.00 | 97.00 | 101.00 | 108.00 | 97.00 | 84.00 | 81.00 | 71.00 | 108.00 | |||||||||||||
2020 | 72.00 | 76.00 | 86.00 | 96.00 | 102.00 | 103.00 | 109.00 | 106.00 | 101.00 | 96.00 | 86.00 | 74.00 | 109.00 | |||||||||||||
2021 | 68.00 | 77.00 | 80.00 | 90.00 | 92.00 | 104.00 | 97.00 | 101.00 | 98.00 | 93.00 | 84.00 | 78.00 | 104.00 | |||||||||||||
2022 | 72.00 | 76.00 | 90.00 | 92.00 | 102.00 | 106.00 | 108.00 | 106.00 | 95.00 | 85.00 | 79.00 | 73.00 | 108.00 | |||||||||||||
2023 | 73.00 | 78.00 | 81.00 | 87.00 | 93.00 | 105.00 | 109.00 | 107.00 | 104.00 | 86.00 | 85.00 | 74.00 | 109.00 | |||||||||||||
2024 | 69.00 | 81.00 | 82.00 | 91.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 73.36 | 77.38 | 83.71 | 89.52 | 96.37 | 101.87 | 100.70 | 99.73 | 95.42 | 89.46 | 80.89 | 73.51 | 104.20 | |||||||||||||
S.D. | 4.27 | 4.55 | 4.20 | 3.74 | 4.29 | 4.10 | 3.81 | 3.87 | 3.61 | 3.53 | 3.29 | 3.58 | 3.40 | |||||||||||||
SKEW | -0.16 | -0.79 | -0.06 | 0.44 | 0.04 | 0.30 | 0.41 | -0.14 | 0.22 | 0.26 | -0.33 | -0.23 | 0.27 | |||||||||||||
MAX | 82.00 | 86.00 | 92.00 | 99.00 | 107.00 | 111.00 | 110.00 | 108.00 | 104.00 | 99.00 | 86.00 | 81.00 | 111.00 | |||||||||||||
MIN | 63.00 | 62.00 | 73.00 | 82.00 | 86.00 | 92.00 | 94.00 | 89.00 | 89.00 | 82.00 | 73.00 | 63.00 | 97.00 | |||||||||||||
YRS | 61 | 61 | 59 | 62 | 60 | 60 | 60 | 59 | 60 | 61 | 61 | 59 | 49 |