YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | 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 | ----- | 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 | 65.86 | a | 65.63 | a | 74.34 | a | 76.75 | c | 77.73 | a | 74.47 | 74.87 | a | ----- | z | 58.61 | c | 71.03 | d | |
2000 | 53.81 | 54.82 | a | 61.79 | b | 65.14 | a | 70.13 | a | 71.89 | b | 75.42 | 77.90 | a | 77.55 | a | 67.03 | 56.69 | a | 57.63 | a | 65.82 | ||||
2001 | 54.35 | 53.93 | 63.42 | 61.07 | b | 77.03 | 79.34 | a | 73.50 | a | 78.58 | 73.69 | a | 73.39 | c | 62.37 | k | 51.77 | 67.28 | a | ||||||
2002 | 53.07 | a | 59.64 | ----- | z | 63.11 | c | 69.03 | a | ----- | z | ----- | z | ----- | z | 78.46 | q | 70.86 | b | 64.44 | c | 54.62 | b | 62.11 | e | |
2003 | 57.10 | a | 58.07 | ----- | z | 58.25 | b | 69.40 | a | ----- | z | ----- | z | ----- | z | 78.93 | p | 76.97 | a | 56.33 | 52.39 | 61.22 | e | |||
2004 | ----- | z | 54.62 | 68.74 | 66.97 | a | 69.45 | k | ----- | z | ----- | z | ----- | z | 77.38 | n | 68.21 | b | 60.04 | f | 55.26 | 62.76 | g | |||
2005 | 51.94 | 56.71 | 62.35 | 63.40 | e | 67.34 | b | ----- | z | ----- | z | ----- | z | 73.80 | j | 70.46 | c | 62.93 | 54.58 | 61.22 | d | |||||
2006 | 54.63 | a | 58.96 | 51.43 | a | ----- | z | 70.33 | y | 79.54 | b | 84.64 | c | 75.00 | b | 75.11 | c | 70.85 | d | 59.09 | g | 54.68 | 67.21 | c | ||
2007 | 56.42 | 56.39 | 66.50 | a | 65.86 | b | 71.82 | c | 76.33 | o | ----- | z | ----- | z | 76.10 | t | 67.85 | e | 63.93 | b | 49.78 | m | 64.11 | e | ||
2008 | 51.32 | f | 57.55 | 62.26 | 69.20 | j | 73.14 | b | ----- | z | ----- | z | ----- | z | 75.29 | p | 73.76 | b | 62.89 | b | 50.31 | o | 65.92 | g | ||
2009 | 59.48 | 55.00 | 60.77 | 65.62 | i | 68.73 | e | 73.39 | b | 78.00 | c | 78.71 | c | 81.20 | e | 67.09 | i | 60.72 | a | 50.40 | a | 66.64 | b | |||
2010 | 51.39 | 56.11 | 60.03 | a | 62.45 | a | 67.25 | k | ----- | z | ----- | z | ----- | z | 78.81 | n | 68.18 | n | 60.90 | 52.10 | a | 57.16 | f | |||
2011 | 57.48 | h | 57.65 | b | 57.33 | d | 63.25 | b | 67.03 | a | ----- | z | ----- | z | ----- | z | 81.71 | m | 72.09 | h | 58.60 | 59.19 | 60.51 | f | ||
2012 | 60.87 | h | 58.75 | a | 56.74 | 64.93 | a | 74.10 | k | ----- | z | ----- | z | ----- | z | 76.17 | l | 70.39 | 62.24 | a | 54.80 | p | 62.61 | g | ||
2013 | 54.77 | 59.50 | 63.23 | 70.45 | a | 73.77 | a | 76.63 | 75.57 | a | 75.90 | 75.10 | a | 71.40 | a | 65.33 | 59.07 | d | 68.39 | |||||||
2014 | 66.91 | i | 58.32 | 64.45 | 67.55 | h | 75.42 | e | ----- | z | ----- | z | 76.80 | u | 74.37 | 74.61 | 66.56 | l | 55.68 | f | 69.44 | g | ||||
2015 | 62.32 | l | 65.54 | b | 69.13 | a | 67.63 | 66.97 | ----- | z | ----- | z | ----- | z | 82.59 | h | 74.48 | 60.10 | 52.43 | a | 65.18 | e | ||||
2016 | 52.45 | t | 65.52 | 60.55 | 68.69 | d | 68.23 | e | ----- | z | ----- | z | 69.89 | v | 77.03 | a | 67.00 | m | 60.60 | 54.19 | 64.97 | e | ||||
2017 | 51.52 | d | 55.57 | 62.50 | a | 64.53 | 72.13 | ----- | z | ----- | z | ----- | z | 79.30 | c | 72.79 | l | 58.67 | 58.90 | 62.89 | d | |||||
2018 | 54.90 | b | 61.85 | a | 58.65 | k | 64.63 | 69.23 | a | ----- | z | ----- | z | ----- | z | 73.45 | j | 71.32 | 68.45 | j | 55.74 | 62.95 | f | |||
2019 | 57.91 | h | 50.81 | a | 57.65 | 69.28 | l | 62.60 | a | ----- | z | ----- | z | ----- | z | 76.13 | g | 75.46 | e | 65.60 | 53.42 | 60.92 | f | |||
2020 | 54.13 | 63.86 | 59.87 | 65.82 | b | 73.03 | b | 79.41 | a | 76.80 | a | 81.29 | 80.53 | 83.42 | g | 62.60 | 59.07 | a | 68.77 | a | ||||||
2021 | 54.90 | b | 57.70 | a | 63.42 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.30 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 54.46 | 58.04 | 61.60 | 64.83 | 70.04 | 76.37 | 77.24 | 77.87 | 76.84 | 71.99 | 61.41 | 55.23 | 67.11 | |||||||||||||
S.D. | 2.21 | 3.66 | 4.31 | 2.88 | 3.64 | 3.19 | 3.56 | 2.04 | 2.73 | 2.92 | 2.85 | 2.90 | 1.82 | |||||||||||||
SKEW | 0.59 | 0.52 | -0.28 | -0.25 | 0.05 | -0.21 | 1.37 | 0.20 | 0.46 | -0.08 | -0.29 | 0.11 | 0.00 | |||||||||||||
MAX | 59.48 | 65.54 | 69.13 | 70.45 | 77.03 | 79.54 | 84.64 | 81.29 | 81.20 | 76.97 | 65.60 | 59.19 | 68.39 | |||||||||||||
MIN | 51.39 | 50.81 | 51.43 | 58.25 | 62.60 | 71.89 | 73.50 | 75.00 | 73.69 | 67.03 | 56.33 | 50.40 | 65.82 | |||||||||||||
YRS | 14 | 22 | 18 | 17 | 18 | 7 | 7 | 7 | 10 | 16 | 16 | 18 | 2 |