YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 83.00 | r | 88.00 | f | 94.00 | f | 104.00 | d | 101.00 | b | 97.00 | i | 93.00 | j | 89.00 | d | 74.00 | j | 65.00 | d | ----- | z |
1961 | 63.00 | g | 75.00 | d | 80.00 | h | 89.00 | j | 97.00 | j | 100.00 | d | 98.00 | e | 99.00 | g | 93.00 | e | 87.00 | i | 70.00 | l | 73.00 | e | ----- | z |
1962 | 71.00 | c | 80.00 | h | 83.00 | d | 90.00 | c | 99.00 | e | 101.00 | a | 97.00 | f | 100.00 | n | 93.00 | m | 87.00 | k | 77.00 | h | 71.00 | d | ----- | z |
1963 | 70.00 | a | 77.00 | c | 86.00 | c | 86.00 | b | 95.00 | e | 99.00 | d | 104.00 | d | 97.00 | d | 93.00 | a | 90.00 | g | 84.00 | e | 66.00 | d | ----- | z |
1964 | 67.00 | h | 66.00 | c | 78.00 | d | 88.00 | e | 94.00 | d | 99.00 | c | 104.00 | c | 101.00 | d | 98.00 | b | 92.00 | k | 80.00 | e | 73.00 | i | ----- | z |
1965 | 69.00 | e | 72.00 | c | 76.00 | b | 96.00 | d | 93.00 | b | 99.00 | 100.00 | h | 98.00 | a | 89.00 | c | 92.00 | d | 78.00 | e | 73.00 | k | ----- | z | |
1966 | 68.00 | d | 69.00 | b | 86.00 | 84.00 | c | 94.00 | e | 98.00 | b | 103.00 | b | 98.00 | f | 91.00 | h | 92.00 | h | 81.00 | e | 72.00 | g | ----- | z | |
1967 | 72.00 | e | 76.00 | b | 86.00 | b | 88.00 | b | 96.00 | b | 98.00 | b | 99.00 | a | 96.00 | c | 94.00 | b | 93.00 | a | 81.00 | g | 66.00 | e | ----- | z |
1968 | 67.00 | b | 72.00 | e | 82.00 | d | 82.00 | b | 98.00 | b | 106.00 | i | 106.00 | c | 95.00 | c | 92.00 | d | 90.00 | d | 75.00 | h | 68.00 | f | ----- | z |
1969 | 75.00 | g | 70.00 | d | 75.00 | c | 85.00 | d | 98.00 | 100.00 | c | 102.00 | f | 102.00 | a | 91.00 | d | 88.00 | d | 75.00 | a | 74.00 | h | ----- | z | |
1970 | 77.00 | b | 78.00 | e | 78.00 | a | 82.00 | d | 99.00 | 106.00 | b | 101.00 | b | 98.00 | n | 98.00 | d | 89.00 | b | 75.00 | n | 77.00 | m | ----- | z | |
1971 | 75.00 | c | 74.00 | b | 88.00 | 89.00 | b | 92.00 | d | 100.00 | d | 101.00 | b | 93.00 | k | 97.00 | o | 88.00 | e | 80.00 | b | 74.00 | f | ----- | z | |
1972 | 71.00 | e | 80.00 | a | 84.00 | a | 90.00 | a | 92.00 | v | 98.00 | j | 101.00 | i | 94.00 | 90.00 | c | 90.00 | b | 69.00 | p | ----- | z | ----- | z | |
1973 | 67.00 | o | 69.00 | b | 74.00 | c | 81.00 | b | 92.00 | e | 103.00 | h | 107.00 | s | 101.00 | k | 94.00 | h | 91.00 | a | 84.00 | d | 74.00 | e | ----- | z |
1974 | 78.00 | c | 68.00 | d | 83.00 | w | 84.00 | c | 96.00 | g | 103.00 | b | 101.00 | b | 98.00 | c | 99.00 | a | 83.00 | a | 74.00 | b | 65.00 | e | ----- | z |
1975 | 74.00 | 71.00 | e | 77.00 | a | 83.00 | 88.00 | c | 98.00 | c | 94.00 | o | 97.00 | e | 90.00 | h | 88.00 | f | 80.00 | c | 75.00 | c | ----- | z | ||
1976 | 65.00 | v | ----- | z | 80.00 | k | 86.00 | a | 94.00 | 98.00 | a | 93.00 | f | 98.00 | l | 96.00 | d | 87.00 | d | 77.00 | f | 67.00 | f | ----- | z | |
1977 | 61.00 | g | 74.00 | h | 76.00 | 85.00 | 97.00 | a | 105.00 | c | 98.00 | d | 94.00 | p | 93.00 | i | 84.00 | o | 82.00 | b | 74.00 | d | ----- | z | ||
1978 | 66.00 | b | 60.00 | u | ----- | z | 87.00 | u | 95.00 | h | 107.00 | 106.00 | b | 99.00 | o | 97.00 | f | 88.00 | 78.00 | f | 67.00 | a | ----- | z | ||
1979 | 54.00 | w | 52.00 | w | ----- | z | 87.00 | 92.00 | a | 99.00 | e | 102.00 | g | ----- | z | 98.00 | b | 93.00 | b | 69.00 | a | 72.00 | l | ----- | z | |
1980 | ----- | z | 76.00 | m | 75.00 | c | 85.00 | f | 92.00 | r | 106.00 | h | 105.00 | c | 102.00 | a | 92.00 | c | 86.00 | b | 82.00 | c | 72.00 | x | ----- | z |
1981 | ----- | z | ----- | z | 80.00 | p | 85.00 | k | ----- | z | ----- | z | ----- | z | 95.00 | f | 94.00 | a | 84.00 | e | 83.00 | j | 73.00 | e | ----- | z |
1982 | 67.00 | d | 81.00 | e | 78.00 | b | 85.00 | c | 89.00 | b | 104.00 | d | 103.00 | f | 101.00 | a | 96.00 | d | 84.00 | d | 78.00 | f | 67.00 | e | ----- | z |
1983 | 68.00 | 71.00 | b | 78.00 | a | 83.00 | b | 88.00 | a | 100.00 | b | 99.00 | 97.00 | a | 98.00 | b | 85.00 | b | 76.00 | a | 69.00 | c | 100.00 | q | ||
1984 | 68.00 | b | 72.00 | 77.00 | g | 85.00 | c | 95.00 | a | 94.00 | d | 96.00 | a | 94.00 | 97.00 | b | 79.00 | 78.00 | b | 69.00 | a | 97.00 | w | |||
1985 | 65.00 | c | 70.00 | 82.00 | e | 84.00 | b | 91.00 | c | 98.00 | d | 98.00 | a | 97.00 | d | 89.00 | e | 86.00 | b | 78.00 | b | 67.00 | e | ----- | z | |
1986 | 76.00 | a | 79.00 | b | 82.00 | b | 87.00 | c | 94.00 | c | 98.00 | c | 99.00 | g | 100.00 | e | 87.00 | 78.00 | a | 71.00 | a | 63.00 | a | ----- | z | |
1987 | 69.00 | c | 74.00 | d | 75.00 | d | 89.00 | e | 85.00 | e | 95.00 | f | 97.00 | d | 97.00 | b | 87.00 | e | 88.00 | e | 76.00 | f | 77.00 | d | ----- | z |
1988 | 70.00 | f | 74.00 | a | 82.00 | j | 85.00 | h | 91.00 | e | 96.00 | d | 97.00 | e | 93.00 | c | 89.00 | c | 87.00 | f | 80.00 | g | 63.00 | e | ----- | z |
1989 | 68.00 | f | 80.00 | c | 88.00 | b | 92.00 | b | 98.00 | a | 100.00 | e | 99.00 | g | 96.00 | d | 90.00 | f | 91.00 | c | 80.00 | f | 70.00 | i | ----- | z |
1990 | 76.00 | e | 73.00 | d | 80.00 | a | 87.00 | d | 93.00 | d | 105.00 | c | 96.00 | h | 98.00 | g | 89.00 | f | 83.00 | e | 76.00 | i | 69.00 | c | ----- | z |
1991 | 64.00 | d | 69.00 | e | 77.00 | i | 84.00 | d | 93.00 | e | 98.00 | i | 97.00 | e | 90.00 | e | 89.00 | c | 88.00 | f | 75.00 | g | 65.00 | a | ----- | z |
1992 | 63.00 | 69.00 | e | 75.00 | b | 89.00 | a | 89.00 | d | 97.00 | h | 101.00 | e | 99.00 | e | 92.00 | c | 86.00 | g | 74.00 | c | 67.00 | d | ----- | z | |
1993 | 64.00 | b | 69.00 | a | 78.00 | 86.00 | e | 89.00 | g | 100.00 | b | 100.00 | e | 92.00 | c | 91.00 | e | 86.00 | j | 72.00 | 67.00 | b | ----- | z | ||
1994 | 69.00 | d | 69.00 | a | 79.00 | f | 86.00 | b | 92.00 | g | 107.00 | b | 102.00 | f | 101.00 | d | 93.00 | 83.00 | a | 78.00 | b | 68.00 | a | ----- | z | |
1995 | 69.00 | a | 74.00 | b | 82.00 | c | 85.00 | b | 91.00 | b | 98.00 | d | 103.00 | g | 97.00 | a | 99.00 | d | 85.00 | g | 78.00 | f | 80.00 | d | ----- | z |
1996 | 70.00 | f | 76.00 | e | 78.00 | i | 93.00 | h | 99.00 | e | 101.00 | d | 97.00 | g | 97.00 | m | 86.00 | f | 87.00 | d | 78.00 | g | 75.00 | j | ----- | z |
1997 | 62.00 | i | 68.00 | f | 87.00 | g | 82.00 | e | 89.00 | f | 97.00 | g | 98.00 | g | 98.00 | k | 94.00 | d | 87.00 | e | 77.00 | i | 66.00 | e | ----- | z |
1998 | 66.00 | a | 72.00 | b | 83.00 | k | 83.00 | e | 95.00 | l | ----- | z | 99.00 | f | 95.00 | e | 94.00 | e | 86.00 | b | 79.00 | f | 70.00 | f | ----- | z |
1999 | ----- | z | 75.00 | d | 76.00 | i | 85.00 | f | 85.00 | a | 98.00 | b | ----- | z | 94.00 | r | 91.00 | i | 87.00 | b | 80.00 | c | 69.00 | f | ----- | z |
2000 | 77.00 | a | 77.00 | b | 75.00 | c | 89.00 | b | 100.00 | b | 97.00 | d | 99.00 | a | 96.00 | d | 98.00 | 92.00 | b | 68.00 | c | 64.00 | b | ----- | z | |
2001 | 62.00 | e | 71.00 | a | 80.00 | c | 83.00 | c | ----- | z | ----- | z | 98.00 | c | 97.00 | e | 94.00 | g | 86.00 | a | 76.00 | 67.00 | a | ----- | z | |
2002 | 73.00 | d | 80.00 | 81.00 | a | 88.00 | a | 96.00 | e | 99.00 | e | 98.00 | e | 100.00 | d | 91.00 | c | 83.00 | e | 73.00 | g | 64.00 | b | ----- | z | |
2003 | 72.00 | b | 72.00 | b | 77.00 | a | 84.00 | d | 97.00 | f | 95.00 | 102.00 | a | 100.00 | c | 92.00 | a | 89.00 | c | 79.00 | a | 71.00 | 102.00 | x | ||
2004 | 65.00 | 74.00 | b | 82.00 | c | 79.00 | c | 90.00 | 98.00 | d | 97.00 | b | ----- | z | 92.00 | b | 78.00 | i | 79.00 | g | 71.00 | g | ----- | z | ||
2005 | 72.00 | c | 70.00 | c | 75.00 | b | 79.00 | d | 96.00 | e | 98.00 | 99.00 | e | 92.00 | h | 93.00 | c | 93.00 | 82.00 | c | 71.00 | a | ----- | z | ||
2006 | 72.00 | a | 76.00 | a | 79.00 | a | 89.00 | a | 95.00 | 100.00 | b | 101.00 | 92.00 | b | 86.00 | 88.00 | 89.00 | 69.00 | 101.00 | h | ||||||
2007 | 63.00 | 70.00 | b | 82.00 | 79.00 | a | 85.00 | g | 93.00 | 93.00 | 99.00 | 92.00 | 86.00 | a | 81.00 | 77.00 | 99.00 | k | ||||||||
2008 | 63.00 | 74.00 | 78.00 | a | 84.00 | 92.00 | 98.00 | 91.00 | 91.00 | 89.00 | 82.00 | b | 77.00 | 74.00 | e | 98.00 | h | |||||||||
2009 | ----- | z | 77.00 | a | 80.00 | b | 85.00 | 90.00 | e | 95.00 | 95.00 | 94.00 | 89.00 | 82.00 | 80.00 | 64.00 | ----- | z | ||||||||
2010 | 61.00 | 63.00 | 81.00 | b | 87.00 | 88.00 | a | 98.00 | 96.00 | a | 95.00 | 93.00 | ----- | z | 75.00 | e | 77.00 | ----- | z | |||||||
2011 | 69.00 | 77.00 | 81.00 | 88.00 | 95.00 | 103.00 | c | 100.00 | 101.00 | 93.00 | 82.00 | 76.00 | 64.00 | 103.00 | c | |||||||||||
2012 | 67.00 | 70.00 | a | 90.00 | a | 92.00 | 95.00 | a | 101.00 | 95.00 | 100.00 | 94.00 | a | 88.00 | ----- | z | ----- | z | ----- | z | ||||||
2013 | 72.00 | d | ----- | z | ----- | z | 89.00 | 93.00 | ----- | z | 95.00 | 96.00 | 91.00 | 83.00 | 73.00 | 68.00 | ----- | z | ||||||||
2014 | 67.00 | ----- | z | 78.00 | 84.00 | 90.00 | 100.00 | 98.00 | d | ----- | z | 95.00 | 85.00 | ----- | z | 69.00 | c | ----- | z | |||||||
2015 | 69.00 | 75.00 | 80.00 | 82.00 | 86.00 | 93.00 | 98.00 | 97.00 | 94.00 | 88.00 | 77.00 | 71.00 | 98.00 | |||||||||||||
2016 | 68.00 | 78.00 | 78.00 | b | 80.00 | 87.00 | 100.00 | 102.00 | b | 95.00 | 91.00 | 90.00 | 78.00 | 69.00 | 102.00 | d | ||||||||||
2017 | 70.00 | 81.00 | 84.00 | 85.00 | b | 91.00 | 102.00 | 96.00 | 89.00 | a | 92.00 | 82.00 | v | 79.00 | g | 72.00 | u | ----- | z | |||||||
2018 | 70.00 | n | 72.00 | 83.00 | 87.00 | 96.00 | 102.00 | f | 102.00 | 94.00 | 91.00 | 85.00 | b | 72.00 | 69.00 | 102.00 | v | |||||||||
2019 | 68.00 | 66.00 | q | 82.00 | k | 84.00 | 88.00 | 97.00 | 101.00 | a | 100.00 | 92.00 | 80.00 | 77.00 | 67.00 | ----- | z | |||||||||
2020 | 67.00 | 70.00 | a | 80.00 | 91.00 | 97.00 | 100.00 | 104.00 | 102.00 | 95.00 | 89.00 | a | 83.00 | a | 69.00 | 104.00 | c | |||||||||
2021 | 64.00 | 72.00 | 77.00 | 86.00 | 89.00 | 103.00 | 92.00 | 98.00 | 94.00 | 86.00 | 81.00 | 74.00 | 103.00 | |||||||||||||
2022 | 69.00 | 69.00 | 85.00 | 88.00 | 96.00 | 103.00 | 102.00 | 98.00 | 88.00 | 84.00 | 74.00 | 67.00 | 103.00 | |||||||||||||
2023 | 69.00 | 72.00 | 76.00 | 85.00 | 88.00 | ----- | z | 102.00 | e | 102.00 | 100.00 | 87.00 | 80.00 | 70.00 | ----- | z | ||||||||||
2024 | 62.00 | 75.00 | 78.00 | 82.00 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 68.81 | 73.19 | 80.04 | 85.71 | 92.80 | 99.72 | 99.29 | 97.00 | 92.88 | 86.59 | 77.79 | 69.15 | 102.17 | |||||||||||||
S.D. | 4.27 | 4.00 | 3.96 | 3.44 | 3.95 | 3.28 | 3.51 | 3.34 | 3.40 | 3.61 | 4.37 | 4.16 | 2.14 | |||||||||||||
SKEW | 0.28 | 0.09 | 0.56 | 0.29 | -0.13 | 0.28 | -0.17 | -0.38 | 0.19 | -0.21 | -0.08 | 0.66 | -1.45 | |||||||||||||
MAX | 78.00 | 81.00 | 90.00 | 96.00 | 100.00 | 107.00 | 106.00 | 102.00 | 100.00 | 93.00 | 89.00 | 80.00 | 104.00 | |||||||||||||
MIN | 61.00 | 63.00 | 74.00 | 79.00 | 85.00 | 93.00 | 91.00 | 89.00 | 86.00 | 78.00 | 68.00 | 63.00 | 98.00 | |||||||||||||
YRS | 48 | 53 | 48 | 56 | 50 | 50 | 45 | 45 | 51 | 49 | 39 | 46 | 6 |