YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | 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 | 54.52 | ----- | z | ----- | z | 61.37 | 62.35 | 67.13 | 69.75 | k | 71.17 | h | 68.61 | b | 64.21 | b | 58.67 | 55.55 | 61.55 | d | ||||||
1997 | 55.19 | 57.11 | 57.43 | a | 59.88 | d | 68.90 | 68.11 | b | 71.65 | 74.55 | 72.27 | 64.44 | f | 60.86 | a | 57.32 | 63.93 | a | |||||||
1998 | 56.48 | 55.85 | a | 58.32 | 58.86 | a | 62.04 | c | 64.23 | 69.36 | f | 71.61 | c | 69.89 | c | 66.45 | 58.00 | 52.13 | 61.26 | a | ||||||
1999 | 54.70 | a | 53.15 | b | 55.11 | c | 58.23 | d | 60.46 | c | 65.27 | d | 67.79 | l | 69.86 | c | 70.44 | l | 65.86 | c | 60.41 | c | 55.87 | a | 59.89 | b |
2000 | 53.97 | 57.07 | b | 56.32 | 60.73 | h | 62.90 | 66.93 | a | 67.71 | j | 70.34 | b | 71.89 | b | 64.37 | d | 57.48 | e | 56.96 | d | 61.82 | b | |||
2001 | 57.65 | 55.07 | 57.63 | a | 57.17 | 64.58 | 64.65 | j | 67.74 | 69.68 | 70.92 | d | 66.18 | c | 60.00 | a | 54.68 | 61.94 | a | |||||||
2002 | 53.32 | 57.61 | 55.32 | 59.52 | a | 61.77 | 67.29 | f | 71.56 | d | 71.52 | d | 71.36 | e | 64.43 | c | 64.27 | 58.00 | 62.61 | a | ||||||
2003 | 60.64 | c | 57.93 | 57.21 | c | 57.34 | a | 64.74 | 69.52 | e | 70.64 | c | 72.12 | f | 72.20 | 69.45 | 57.15 | c | 56.57 | c | 63.04 | a | ||||
2004 | 55.71 | 57.00 | 59.56 | f | 64.79 | b | 65.23 | a | 67.07 | b | 72.59 | d | 73.03 | 71.23 | d | 65.10 | b | 59.47 | 57.26 | 64.41 | a | |||||
2005 | 57.10 | 61.32 | 61.97 | 59.77 | 65.67 | d | 66.52 | a | 70.97 | b | 71.62 | g | 68.50 | d | 64.59 | b | 56.81 | c | 56.61 | 62.71 | a | |||||
2006 | 56.16 | 58.54 | 54.72 | b | 59.80 | e | 64.79 | c | 65.97 | 69.94 | 69.00 | j | 69.16 | e | 66.23 | 57.41 | c | 57.84 | f | 62.27 | b | |||||
2007 | 54.28 | b | 54.07 | 59.48 | 59.93 | b | 62.55 | 66.53 | 71.84 | f | 71.58 | 68.44 | e | 64.73 | a | 58.86 | b | 52.70 | h | 62.05 | b | |||||
2008 | 51.77 | 54.89 | b | 55.86 | i | 56.71 | b | 61.60 | f | 63.27 | 68.68 | c | 70.04 | f | 68.37 | 65.90 | b | 62.37 | c | 52.27 | e | 60.47 | c | |||
2009 | 56.43 | c | 57.25 | 54.71 | 58.93 | a | 61.38 | b | 65.67 | 68.74 | 70.58 | l | 73.11 | b | 65.19 | 60.21 | a | 54.52 | b | 61.47 | a | |||||
2010 | 57.32 | c | 57.00 | c | 57.63 | a | 58.00 | a | 60.79 | b | 64.13 | 67.50 | c | 69.04 | e | 70.59 | c | 68.71 | n | 55.43 | g | 54.73 | e | 61.67 | b | |
2011 | 58.28 | b | 53.56 | a | 56.28 | m | 56.88 | d | 60.21 | g | 65.70 | g | 69.15 | d | 72.38 | g | 71.75 | f | 67.00 | a | 57.68 | k | 55.53 | p | 60.97 | g |
2012 | 56.17 | h | 55.90 | 55.25 | s | 59.04 | f | 62.34 | b | 66.37 | k | 68.26 | l | 70.52 | f | 69.21 | f | 64.90 | 61.27 | d | 49.75 | s | 61.10 | h | ||
2013 | 53.62 | w | 55.82 | 59.73 | i | 61.05 | j | 64.69 | e | 66.90 | j | 69.65 | k | 71.40 | k | 70.30 | c | 63.50 | e | 61.26 | g | 52.83 | h | 63.58 | h | |
2014 | 59.24 | f | 54.20 | w | 58.83 | s | 62.75 | j | 67.11 | d | 68.11 | k | 68.84 | 69.74 | 69.80 | 65.41 | n | 51.39 | l | 60.17 | y | 68.87 | h | |||
2015 | 62.50 | y | 60.54 | 60.74 | 59.07 | 61.61 | 65.55 | a | 71.32 | 71.68 | 69.07 | 67.35 | 57.83 | 53.06 | 63.44 | a | ||||||||||
2016 | 56.16 | 59.34 | 58.48 | 62.03 | a | 64.29 | 67.23 | 68.29 | 69.53 | p | 70.53 | 63.55 | 60.00 | 52.08 | r | 62.99 | b | |||||||||
2017 | 51.26 | 53.40 | c | 55.84 | 57.63 | 61.81 | 65.13 | 68.16 | 71.26 | 71.23 | 65.90 | 56.25 | v | 55.55 | 61.56 | a | ||||||||||
2018 | 55.94 | 53.61 | 54.39 | 58.53 | 61.97 | 66.37 | 68.97 | a | 69.26 | 69.80 | 64.81 | 59.83 | 55.00 | 61.54 | ||||||||||||
2019 | 57.74 | 48.54 | 56.26 | 58.57 | 63.33 | v | 65.79 | p | 70.97 | 73.26 | 70.50 | 65.06 | 59.17 | 54.39 | 61.44 | b | ||||||||||
2020 | 53.23 | 54.14 | ----- | z | 61.50 | n | 63.84 | 66.46 | b | 68.16 | f | 71.70 | h | 71.00 | e | 66.12 | f | 57.41 | a | 55.18 | c | 60.18 | e | |||
2021 | 54.07 | b | 52.96 | a | 54.75 | c | 57.35 | m | 61.77 | i | 67.10 | 68.07 | b | 71.26 | 71.27 | 62.97 | 60.03 | 49.68 | 61.22 | b | ||||||
2022 | 55.87 | 56.36 | 55.83 | b | 55.73 | 59.06 | 65.86 | a | 68.45 | 71.55 | 70.97 | a | 66.10 | a | 55.27 | 50.90 | 61.00 | |||||||||
2023 | 53.95 | j | 51.38 | d | 49.90 | 54.67 | 60.27 | i | 63.80 | 69.52 | 73.55 | 69.87 | 66.73 | a | 59.17 | ----- | z | 62.06 | c | |||||||
2024 | 59.77 | r | 55.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.00 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 55.56 | 55.72 | 56.60 | 58.79 | 63.26 | 66.09 | 69.59 | 71.34 | 70.43 | 65.44 | 59.21 | 54.81 | 61.27 | |||||||||||||
S.D. | 2.15 | 2.77 | 2.61 | 2.18 | 2.27 | 1.49 | 1.50 | 1.58 | 1.29 | 1.42 | 1.98 | 2.23 | 0.38 | |||||||||||||
SKEW | 0.07 | -0.26 | -0.22 | 0.70 | 0.55 | 0.06 | 0.44 | 0.35 | 0.02 | 0.70 | 0.43 | -0.73 | -0.00 | |||||||||||||
MAX | 60.64 | 61.32 | 61.97 | 64.79 | 68.90 | 69.52 | 72.59 | 74.55 | 73.11 | 69.45 | 64.27 | 58.00 | 61.54 | |||||||||||||
MIN | 51.26 | 48.54 | 49.90 | 54.67 | 59.06 | 63.27 | 67.50 | 69.04 | 68.37 | 62.97 | 55.27 | 49.68 | 61.00 | |||||||||||||
YRS | 23 | 27 | 20 | 22 | 23 | 21 | 20 | 17 | 25 | 24 | 23 | 20 | 2 |