YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 78.00 | 74.00 | 78.00 | a | 91.00 | 95.00 | 102.00 | 102.00 | 99.00 | 102.00 | 88.00 | 74.00 | 72.00 | 102.00 | a | |||||||||||
1949 | 62.00 | 74.00 | 81.00 | 85.00 | 93.00 | 100.00 | 99.00 | 98.00 | 98.00 | a | 88.00 | 83.00 | 69.00 | 100.00 | a | |||||||||||
1950 | 81.00 | 76.00 | 83.00 | 94.00 | 94.00 | 100.00 | 97.00 | 100.00 | 93.00 | 93.00 | 82.00 | 74.00 | 100.00 | |||||||||||||
1951 | 77.00 | 79.00 | 78.00 | 90.00 | 97.00 | 102.00 | 106.00 | 103.00 | 100.00 | 91.00 | 75.00 | 73.00 | 106.00 | |||||||||||||
1952 | 75.00 | 72.00 | 76.00 | 88.00 | 96.00 | 104.00 | 101.00 | 100.00 | 95.00 | 89.00 | 81.00 | 69.00 | a | 104.00 | a | |||||||||||
1953 | 75.00 | 73.00 | 81.00 | 90.00 | 100.00 | 106.00 | 104.00 | 101.00 | 97.00 | 92.00 | 78.00 | 65.00 | 106.00 | |||||||||||||
1954 | 71.00 | 78.00 | 83.00 | 91.00 | 93.00 | 103.00 | 102.00 | 101.00 | 98.00 | 94.00 | ----- | 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 | 85.00 | 90.00 | 99.00 | 98.00 | 101.00 | 102.00 | 96.00 | a | 92.00 | 80.00 | 72.00 | ----- | z | |||||||||
1963 | 73.00 | a | 81.00 | 89.00 | 88.00 | 96.00 | 101.00 | 104.00 | 98.00 | 93.00 | 91.00 | 80.00 | 73.00 | 104.00 | a | |||||||||||
1964 | 70.00 | 65.00 | 82.00 | 89.00 | 98.00 | 102.00 | 106.00 | 104.00 | 98.00 | 90.00 | 80.00 | 74.00 | 106.00 | |||||||||||||
1965 | 71.00 | 76.00 | a | 78.00 | 97.00 | 94.00 | 97.00 | 102.00 | 99.00 | 93.00 | a | 90.00 | 78.00 | 74.00 | 102.00 | b | ||||||||||
1966 | 66.00 | 67.00 | 86.00 | 87.00 | 98.00 | a | 98.00 | 104.00 | 100.00 | 95.00 | a | 86.00 | 81.00 | 72.00 | 104.00 | b | ||||||||||
1967 | 76.00 | 76.00 | 86.00 | 90.00 | 96.00 | 101.00 | 98.00 | 96.00 | 94.00 | 92.00 | 82.00 | 66.00 | 101.00 | |||||||||||||
1968 | 72.00 | 72.00 | 80.00 | 81.00 | 97.00 | 109.00 | 102.00 | 99.00 | 95.00 | 91.00 | 76.00 | 73.00 | 109.00 | |||||||||||||
1969 | 72.00 | a | 72.00 | 76.00 | 87.00 | 96.00 | 101.00 | 105.00 | 104.00 | 92.00 | 90.00 | 77.00 | 70.00 | 105.00 | a | |||||||||||
1970 | 74.00 | 80.00 | 81.00 | a | 85.00 | 95.00 | 104.00 | 102.00 | 100.00 | 97.00 | 86.00 | 77.00 | 76.00 | 104.00 | a | |||||||||||
1971 | 78.00 | 75.00 | 90.00 | 90.00 | 94.00 | 98.00 | 101.00 | a | 97.00 | 96.00 | 87.00 | 82.00 | 74.00 | 101.00 | a | |||||||||||
1972 | 79.00 | 80.00 | b | 86.00 | 95.00 | 96.00 | 102.00 | 99.00 | 95.00 | 90.00 | 88.00 | a | 71.00 | 69.00 | 102.00 | c | ||||||||||
1973 | 66.00 | 69.00 | 76.00 | 86.00 | 92.00 | 104.00 | 104.00 | 101.00 | 94.00 | 93.00 | 85.00 | 75.00 | 104.00 | |||||||||||||
1974 | 79.00 | 75.00 | 86.00 | a | 89.00 | 101.00 | 104.00 | 102.00 | 100.00 | 100.00 | 86.00 | 75.00 | 67.00 | 104.00 | a | |||||||||||
1975 | 77.00 | 72.00 | 80.00 | 85.00 | 93.00 | 102.00 | 99.00 | 100.00 | 94.00 | 89.00 | 84.00 | 76.00 | 102.00 | |||||||||||||
1976 | 73.00 | 80.00 | 85.00 | 86.00 | 95.00 | 101.00 | 99.00 | 99.00 | 94.00 | 88.00 | a | 76.00 | 70.00 | 101.00 | a | |||||||||||
1977 | 60.00 | 77.00 | 79.00 | 87.00 | 99.00 | 107.00 | 103.00 | 103.00 | 97.00 | 87.00 | 82.00 | 75.00 | 107.00 | |||||||||||||
1978 | 64.00 | a | 70.00 | 88.00 | 89.00 | 100.00 | 107.00 | 103.00 | 102.00 | a | 98.00 | 91.00 | 81.00 | 67.00 | 107.00 | b | ||||||||||
1979 | 61.00 | 83.00 | 79.00 | 88.00 | 93.00 | 102.00 | 105.00 | 96.00 | 99.00 | 97.00 | a | 70.00 | 73.00 | a | 105.00 | b | ||||||||||
1980 | 75.00 | 78.00 | 77.00 | 89.00 | 96.00 | 109.00 | 104.00 | 101.00 | 95.00 | 86.00 | 86.00 | 79.00 | 109.00 | |||||||||||||
1981 | 70.00 | 81.00 | a | 81.00 | 93.00 | 93.00 | 108.00 | 105.00 | 96.00 | 93.00 | 85.00 | 80.00 | 75.00 | 108.00 | a | |||||||||||
1982 | 73.00 | 82.00 | 84.00 | 89.00 | 92.00 | 99.00 | 102.00 | ----- | z | 97.00 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 99.00 | w | 102.00 | 97.00 | 71.00 | 69.00 | ----- | z | ||||
2001 | 61.00 | 74.00 | 83.00 | 87.00 | 93.00 | 99.00 | 103.00 | 101.00 | 98.00 | 91.00 | 79.00 | 72.00 | 103.00 | |||||||||||||
2002 | 74.00 | 81.00 | a | 86.00 | 91.00 | a | 98.00 | d | 104.00 | c | 101.00 | l | 104.00 | a | 95.00 | c | 87.00 | 75.00 | 65.00 | 104.00 | y | |||||
2003 | 74.00 | 76.00 | 80.00 | 87.00 | 100.00 | 98.00 | 106.00 | 104.00 | 94.00 | 91.00 | 80.00 | 73.00 | 106.00 | |||||||||||||
2004 | 70.00 | f | 77.00 | 87.00 | 83.00 | 98.00 | 104.00 | 102.00 | 99.00 | 98.00 | 82.00 | 75.00 | 72.00 | 104.00 | f | |||||||||||
2005 | 73.00 | a | 71.00 | 83.00 | 81.00 | 97.00 | 103.00 | 104.00 | a | 98.00 | 95.00 | 87.00 | 82.00 | 76.00 | 104.00 | b | ||||||||||
2006 | 75.00 | 84.00 | 81.00 | 92.00 | 100.00 | 106.00 | 104.00 | 98.00 | 89.00 | 92.00 | 88.00 | 69.00 | 106.00 | |||||||||||||
2007 | 66.00 | 73.00 | 88.00 | 84.00 | 94.00 | 100.00 | 101.00 | 106.00 | 100.00 | 94.00 | 83.00 | 75.00 | 106.00 | |||||||||||||
2008 | 69.00 | 75.00 | 84.00 | 91.00 | a | 98.00 | 105.00 | 100.00 | 100.00 | 94.00 | 89.00 | 82.00 | 77.00 | 105.00 | a | |||||||||||
2009 | 75.00 | 79.00 | 84.00 | a | 90.00 | 99.00 | c | 101.00 | c | 106.00 | 102.00 | 95.00 | 88.00 | 84.00 | 66.00 | a | 106.00 | h | ||||||||
2010 | 66.00 | d | 65.00 | 87.00 | 87.00 | 94.00 | 106.00 | 104.00 | 102.00 | 98.00 | 90.00 | 81.00 | 79.00 | 106.00 | d | |||||||||||
2011 | 74.00 | 80.00 | b | 86.00 | 92.00 | 102.00 | 108.00 | 106.00 | c | 105.00 | a | 98.00 | 89.00 | 79.00 | 69.00 | 108.00 | f | |||||||||
2012 | 74.00 | 74.00 | a | 93.00 | c | 99.00 | 100.00 | 108.00 | 105.00 | 107.00 | 101.00 | 93.00 | 83.00 | 77.00 | 108.00 | d | ||||||||||
2013 | 75.00 | 73.00 | 86.00 | 97.00 | 101.00 | 109.00 | 101.00 | 102.00 | d | 97.00 | 90.00 | 74.00 | 72.00 | 109.00 | d | |||||||||||
2014 | 71.00 | 80.00 | 82.00 | 89.00 | 97.00 | 105.00 | 105.00 | 101.00 | 101.00 | 89.00 | a | 81.00 | 73.00 | 105.00 | a | |||||||||||
2015 | 71.00 | 82.00 | 85.00 | 86.00 | 87.00 | 98.00 | 103.00 | 101.00 | 101.00 | 92.00 | 85.00 | 74.00 | 103.00 | |||||||||||||
2016 | 74.00 | 85.00 | 85.00 | 88.00 | 93.00 | 106.00 | 109.00 | 102.00 | 98.00 | 97.00 | 83.00 | 72.00 | 109.00 | |||||||||||||
2017 | 74.00 | 86.00 | 91.00 | a | 91.00 | 94.00 | 109.00 | 105.00 | 99.00 | 98.00 | 87.00 | 85.00 | 79.00 | 109.00 | a | |||||||||||
2018 | 81.00 | 77.00 | 88.00 | 93.00 | 100.00 | 108.00 | 108.00 | 101.00 | 98.00 | 93.00 | 73.00 | 74.00 | 108.00 | |||||||||||||
2019 | 74.00 | 76.00 | 87.00 | 92.00 | 93.00 | 103.00 | 108.00 | 104.00 | d | 99.00 | 86.00 | 82.00 | b | 71.00 | 108.00 | f | ||||||||||
2020 | 71.00 | a | 75.00 | 87.00 | 96.00 | a | 103.00 | 109.00 | 110.00 | 106.00 | i | 100.00 | 96.00 | 85.00 | 71.00 | 110.00 | k | |||||||||
2021 | 68.00 | 78.00 | 84.00 | 92.00 | 95.00 | 109.00 | 99.00 | a | 105.00 | 103.00 | 93.00 | 84.00 | 76.00 | 109.00 | a | |||||||||||
2022 | 72.00 | 73.00 | 85.00 | 93.00 | 103.00 | 112.00 | 109.00 | 102.00 | 95.00 | 84.00 | 75.00 | 70.00 | 112.00 | |||||||||||||
2023 | 71.00 | 74.00 | 79.00 | b | 87.00 | b | 90.00 | c | 102.00 | 106.00 | 105.00 | 101.00 | 89.00 | 84.00 | 71.00 | 106.00 | g | |||||||||
2024 | 67.00 | g | 77.00 | 75.00 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 72.06 | 76.12 | 83.27 | 89.35 | 96.27 | 103.59 | 103.30 | 100.86 | 96.75 | 89.92 | 79.78 | 72.28 | 105.15 | |||||||||||||
S.D. | 5.04 | 4.71 | 4.18 | 3.84 | 3.39 | 3.76 | 2.96 | 2.75 | 3.11 | 3.35 | 4.28 | 3.53 | 2.89 | |||||||||||||
SKEW | -0.65 | -0.21 | -0.06 | 0.20 | -0.08 | 0.16 | 0.09 | 0.03 | -0.16 | 0.18 | -0.48 | -0.18 | 0.12 | |||||||||||||
MAX | 81.00 | 86.00 | 93.00 | 99.00 | 103.00 | 112.00 | 110.00 | 107.00 | 103.00 | 97.00 | 88.00 | 79.00 | 112.00 | |||||||||||||
MIN | 60.00 | 65.00 | 75.00 | 81.00 | 87.00 | 97.00 | 97.00 | 95.00 | 89.00 | 82.00 | 70.00 | 65.00 | 100.00 | |||||||||||||
YRS | 49 | 51 | 52 | 51 | 51 | 51 | 50 | 49 | 52 | 51 | 50 | 50 | 41 |