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 | ----- | 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 | 89.36 | c | 97.70 | j | 90.06 | 90.29 | ----- | z | ----- | z | 60.50 | 54.87 | 77.02 | g | ||||
1992 | 53.26 | 63.34 | 73.71 | q | 81.53 | 82.23 | 91.97 | 94.93 | a | 92.32 | 91.47 | 82.97 | ----- | z | 58.74 | 79.28 | b | |||||||||
1993 | 55.65 | 60.11 | 69.77 | 81.23 | 89.00 | 95.87 | 98.29 | 95.55 | 87.40 | 78.42 | 64.33 | 61.16 | 78.06 | |||||||||||||
1994 | 57.97 | 61.21 | 70.84 | 80.80 | 87.13 | a | 102.92 | d | 99.13 | a | 95.84 | 90.17 | a | ----- | z | 70.07 | 66.18 | c | 80.21 | a | ||||||
1995 | 57.61 | 67.79 | 67.32 | 77.68 | b | 85.35 | 93.86 | a | 95.57 | q | 94.17 | y | 85.97 | 80.60 | a | 69.34 | a | 59.97 | b | 74.55 | b | |||||
1996 | 59.79 | b | 62.88 | d | 67.48 | h | 77.22 | c | 96.29 | 96.71 | b | 94.00 | c | 89.79 | b | 83.57 | 80.00 | g | 69.95 | i | 63.00 | j | 82.53 | d | ||
1997 | 51.86 | b | 55.00 | 72.48 | b | 72.08 | d | 85.58 | 93.40 | e | 95.76 | b | 95.93 | b | 88.78 | c | ----- | z | 69.63 | 53.65 | h | 78.05 | b | |||
1998 | 64.40 | a | 63.27 | b | 67.97 | b | 77.11 | c | 94.18 | c | 101.72 | e | ----- | z | ----- | z | 92.47 | 80.36 | c | 67.31 | a | 58.48 | 76.73 | b | ||
1999 | 66.96 | e | 68.67 | a | 69.64 | q | 78.85 | d | 84.08 | f | 91.17 | a | 94.57 | c | 96.83 | a | 86.07 | c | 80.19 | d | 73.16 | e | 58.14 | c | 79.46 | b |
2000 | 64.04 | g | 69.42 | c | 71.33 | m | ----- | z | ----- | z | ----- | z | 99.62 | o | 94.26 | 92.60 | 73.58 | g | 58.83 | 53.07 | b | 73.64 | g | |||
2001 | 52.66 | b | 61.88 | d | 64.33 | a | 82.74 | c | 88.79 | c | 97.00 | 99.83 | a | 94.43 | a | 89.59 | a | 81.96 | d | 66.14 | b | 59.43 | c | 78.23 | ||
2002 | 60.57 | a | 57.89 | 66.87 | a | 80.60 | 89.33 | a | 96.77 | d | 92.52 | b | 96.50 | a | 87.55 | a | 73.50 | a | 60.87 | 55.73 | a | 76.56 | ||||
2003 | 60.54 | c | 59.04 | 70.42 | 81.87 | 88.23 | a | 93.07 | 93.20 | a | 95.29 | 86.07 | 81.23 | 66.47 | 61.35 | 78.06 | ||||||||||
2004 | 58.13 | a | 56.75 | a | 69.87 | 75.59 | a | 87.53 | a | 93.40 | 91.27 | a | 88.63 | d | 83.90 | 74.94 | 60.57 | 58.77 | a | 74.94 | ||||||
2005 | 61.68 | 57.63 | a | 67.16 | 77.10 | a | 81.42 | 93.31 | a | 93.43 | a | 89.84 | 91.14 | a | 75.52 | b | 68.80 | e | 60.80 | a | 76.49 | |||||
2006 | 64.75 | c | 63.92 | b | 70.20 | a | 82.77 | 92.35 | 93.90 | 94.77 | ----- | z | 81.20 | 76.45 | 71.03 | a | 56.03 | b | 77.04 | a | ||||||
2007 | 48.45 | 63.46 | b | 73.10 | 74.31 | a | 78.42 | 91.73 | d | 89.52 | 91.65 | 88.24 | a | 82.81 | ----- | z | ----- | z | 78.17 | b | ||||||
2008 | ----- | z | ----- | z | ----- | z | 83.29 | w | 88.90 | 99.80 | 91.77 | 90.48 | 81.77 | 77.19 | 68.23 | ----- | z | 85.45 | e | |||||||
2009 | 62.19 | 68.65 | k | 71.81 | 79.13 | 87.00 | 94.47 | 94.23 | 93.74 | 84.35 | j | 76.81 | 70.90 | 51.90 | a | 78.22 | b | |||||||||
2010 | 56.03 | 56.18 | 68.71 | 77.73 | 84.69 | b | 97.50 | 87.84 | 93.77 | 90.17 | f | 80.87 | 69.87 | 63.42 | 76.06 | a | ||||||||||
2011 | 59.16 | 62.57 | 79.81 | 86.50 | 88.71 | 101.93 | 98.68 | 99.52 | 89.03 | 80.45 | 67.63 | 48.29 | 80.19 | |||||||||||||
2012 | 61.71 | 61.28 | 75.52 | 85.97 | 87.39 | 98.20 | 93.74 | 96.96 | h | 87.17 | 78.26 | 72.33 | 62.32 | 78.53 | a | |||||||||||
2013 | 54.94 | 63.43 | 72.52 | 78.93 | 87.52 | 96.50 | 90.65 | 94.97 | 88.50 | 78.74 | 62.67 | 54.35 | 76.98 | |||||||||||||
2014 | 58.94 | 63.57 | 70.90 | 79.70 | 86.42 | 97.10 | 95.32 | 93.42 | 81.63 | 80.06 | 60.70 | 57.90 | 77.14 | |||||||||||||
2015 | 50.13 | 60.11 | 66.03 | 77.40 | 80.35 | 90.90 | 96.32 | 96.58 | 90.70 | 76.68 | 65.53 | 62.84 | 76.13 | |||||||||||||
2016 | 57.87 | 67.72 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.89 | u | ----- | z | 69.87 | ----- | z | 65.15 | i | |||
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | 62.39 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.39 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 58.05 | 62.06 | 70.30 | 79.40 | 87.23 | 95.79 | 94.08 | 93.79 | 87.50 | 78.90 | 66.73 | 58.27 | 77.28 | |||||||||||||
S.D. | 4.72 | 3.87 | 3.58 | 3.47 | 4.13 | 3.47 | 3.19 | 2.84 | 3.44 | 2.68 | 4.24 | 4.25 | 1.44 | |||||||||||||
SKEW | -0.21 | 0.13 | 0.80 | 0.14 | -0.07 | 0.53 | 0.04 | -0.15 | -0.39 | -0.30 | -0.44 | -0.44 | 0.45 | |||||||||||||
MAX | 66.96 | 69.42 | 79.81 | 86.50 | 96.29 | 102.92 | 99.83 | 99.52 | 92.60 | 82.97 | 73.16 | 66.18 | 80.19 | |||||||||||||
MIN | 48.45 | 55.00 | 64.33 | 72.08 | 78.42 | 90.90 | 87.84 | 88.63 | 81.20 | 73.50 | 58.83 | 48.29 | 74.94 | |||||||||||||
YRS | 23 | 24 | 19 | 22 | 23 | 23 | 22 | 21 | 22 | 20 | 23 | 21 | 10 |