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 | 48.37 | ----- | z | ----- | z | 53.19 | a | 53.85 | 57.97 | 60.39 | l | 60.91 | h | 58.62 | b | 55.50 | b | 51.58 | 48.80 | a | 53.49 | d | ||||
1997 | 48.10 | 48.02 | 49.47 | b | 51.79 | d | 58.87 | 59.41 | b | 63.08 | 64.53 | 62.60 | 56.70 | f | 53.73 | b | 47.85 | a | 55.22 | a | ||||||
1998 | 51.31 | 49.70 | a | 50.55 | 50.24 | a | 54.34 | c | 57.77 | 62.06 | f | 62.50 | c | 59.70 | c | 56.15 | 51.41 | b | 44.87 | 53.50 | a | |||||
1999 | 47.27 | a | 47.46 | c | 46.56 | d | 49.54 | d | 52.46 | c | 56.96 | d | 59.24 | l | 61.05 | c | 58.50 | m | 54.93 | c | 53.70 | c | 47.90 | a | 51.78 | b |
2000 | 47.15 | 50.02 | b | 47.48 | 52.30 | h | 55.10 | 58.33 | a | 60.19 | j | 61.50 | c | 60.95 | b | 55.07 | d | 49.32 | e | 49.15 | d | 53.41 | b | |||
2001 | 48.35 | 46.55 | 49.22 | a | 49.77 | 55.25 | c | 55.50 | j | 59.74 | 61.53 | 60.63 | d | 56.05 | c | 52.60 | a | 48.40 | a | 53.46 | a | |||||
2002 | 46.50 | b | 49.20 | 46.82 | a | 51.29 | a | 52.79 | 58.94 | f | 62.26 | d | 60.13 | d | 59.88 | e | 53.23 | c | 54.65 | 51.11 | 53.44 | a | ||||
2003 | 53.33 | d | 48.59 | 50.84 | c | 50.26 | a | 54.87 | 59.26 | e | 61.88 | c | 62.66 | f | 61.28 | 59.81 | 49.59 | c | 49.74 | d | 54.50 | a | ||||
2004 | 49.25 | a | 49.26 | 50.56 | f | 54.07 | b | 56.27 | a | 59.50 | b | 63.72 | d | 64.10 | 61.42 | d | 55.88 | b | 50.12 | 49.19 | 55.71 | a | ||||
2005 | 49.28 | a | 50.52 | 52.32 | 51.67 | 57.35 | d | 59.12 | a | 62.21 | b | 61.29 | g | 57.77 | d | 56.17 | b | 49.06 | c | 49.37 | 54.08 | a | ||||
2006 | 49.69 | 48.11 | 47.28 | b | 51.42 | e | 54.93 | c | 59.22 | 61.37 | 60.12 | j | 58.96 | f | 54.77 | 50.83 | c | 48.24 | f | 53.07 | c | |||||
2007 | 44.89 | d | 47.50 | 51.10 | 51.04 | b | 53.65 | 57.17 | 63.30 | f | 62.68 | 58.72 | e | 55.02 | a | 49.43 | b | 45.26 | h | 53.12 | b | |||||
2008 | 44.36 | b | 46.30 | b | 47.18 | i | 47.54 | b | 53.44 | f | 55.00 | 59.80 | c | 61.34 | f | 57.85 | 55.71 | b | 53.89 | c | 44.63 | e | 51.68 | c | ||
2009 | 47.27 | e | 48.21 | 46.97 | 49.29 | a | 53.66 | b | 58.27 | 60.27 | 60.42 | l | 61.36 | b | 55.60 | 50.95 | a | 45.62 | c | 52.50 | a | |||||
2010 | 51.36 | c | 49.62 | c | 48.45 | a | 49.19 | a | 52.48 | b | 56.82 | 58.93 | c | 60.29 | e | 61.26 | c | 58.18 | n | 47.95 | h | 48.73 | e | 53.71 | b | |
2011 | 48.64 | b | 44.98 | a | 49.69 | m | 48.56 | e | 51.75 | g | 57.34 | h | 60.54 | d | 62.04 | g | 61.07 | g | 56.75 | a | 49.50 | l | 46.43 | p | 51.89 | g |
2012 | 47.57 | h | 47.36 | 46.75 | s | 50.96 | f | 53.47 | b | 57.79 | k | 60.82 | l | 61.02 | i | 58.31 | f | 55.90 | 53.56 | d | 43.04 | s | 52.57 | h | ||
2013 | 46.12 | w | 47.02 | 50.25 | i | 51.02 | j | 55.28 | f | 58.05 | j | 61.45 | k | 62.02 | k | 61.30 | c | 52.90 | e | 51.02 | g | 41.85 | h | 53.74 | i | |
2014 | 49.30 | f | 44.20 | w | 49.62 | s | 52.83 | j | 58.20 | d | 58.82 | k | 61.34 | 61.29 | 60.25 | 54.65 | n | 43.03 | m | 54.08 | y | 60.27 | h | |||
2015 | ----- | z | 51.80 | 51.39 | 49.85 | 54.52 | 57.22 | a | 62.19 | 62.39 | 58.80 | 58.16 | 48.97 | 47.53 | 54.80 | a | ||||||||||
2016 | 49.40 | 50.81 | 50.69 | 53.34 | a | 55.55 | 58.12 | 60.68 | 59.30 | p | 59.30 | 57.02 | 53.50 | 42.88 | r | 54.84 | b | |||||||||
2017 | 43.50 | 46.38 | c | 49.05 | 49.83 | 53.63 | 57.28 | 59.73 | 61.40 | 60.55 | 55.21 | 47.75 | v | 46.24 | 52.98 | a | ||||||||||
2018 | 49.26 | 44.88 | 45.85 | 50.23 | 55.08 | 57.50 | 60.57 | a | 60.92 | 58.57 | 55.00 | 50.68 | 47.35 | 52.99 | ||||||||||||
2019 | 49.21 | 41.77 | 46.73 | 51.52 | 53.72 | v | 57.14 | p | 62.23 | 63.39 | 61.57 | 53.58 | 48.93 | 47.45 | 52.64 | b | ||||||||||
2020 | 48.21 | 45.22 | ----- | z | 53.34 | n | 54.90 | 58.39 | b | 59.54 | f | 61.24 | h | 61.15 | f | 54.94 | f | 48.55 | a | 47.20 | c | 50.41 | f | |||
2021 | ----- | z | 45.57 | a | 45.68 | c | 47.03 | m | 53.11 | i | 58.67 | 60.59 | b | 61.47 | 59.73 | 54.44 | 52.17 | 44.35 | 53.63 | c | ||||||
2022 | 47.16 | 46.61 | 47.98 | b | 47.27 | 51.40 | 57.52 | a | 60.87 | 62.71 | 61.12 | a | 56.85 | a | 46.03 | 44.74 | 52.52 | |||||||||
2023 | 45.67 | j | 43.56 | d | 42.50 | 48.03 | 54.52 | i | 56.18 | 61.13 | 63.98 | 60.25 | 57.15 | a | 50.90 | ----- | z | 53.74 | c | |||||||
2024 | 54.81 | r | 48.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.93 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 48.27 | 47.55 | 48.35 | 50.41 | 54.66 | 57.89 | 61.16 | 62.11 | 60.15 | 55.70 | 51.05 | 47.51 | 52.76 | |||||||||||||
S.D. | 2.28 | 2.32 | 2.42 | 1.81 | 1.84 | 1.15 | 1.22 | 1.32 | 1.31 | 1.52 | 2.18 | 1.91 | 0.33 | |||||||||||||
SKEW | -0.09 | -0.42 | -0.38 | 0.21 | 0.60 | -0.58 | 0.25 | 0.36 | -0.25 | 0.53 | -0.17 | -0.20 | 0.00 | |||||||||||||
MAX | 53.33 | 51.80 | 52.32 | 54.07 | 58.87 | 59.50 | 63.72 | 64.53 | 62.60 | 59.81 | 54.65 | 51.11 | 52.99 | |||||||||||||
MIN | 43.50 | 41.77 | 42.50 | 47.27 | 51.40 | 55.00 | 58.93 | 60.13 | 57.77 | 52.90 | 46.03 | 44.35 | 52.52 | |||||||||||||
YRS | 22 | 27 | 20 | 22 | 22 | 21 | 20 | 17 | 23 | 24 | 23 | 20 | 2 |