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 | 43.00 | f | 56.00 | k | 61.00 | a | 60.00 | a | ----- | z | ----- | z | 15.00 | 20.00 | ----- | z | ||
1992 | 14.00 | 29.00 | 37.00 | r | 31.00 | a | 47.00 | 47.00 | 60.00 | a | 58.00 | 46.00 | b | 32.00 | a | ----- | z | 16.00 | d | ----- | z | |||||
1993 | 20.00 | 23.00 | b | 12.00 | 34.00 | c | 38.00 | c | 56.00 | d | 64.00 | a | 57.00 | a | 43.00 | b | 20.00 | e | 9.00 | b | 13.00 | 9.00 | w | |||
1994 | 14.00 | 13.00 | a | 20.00 | 25.00 | c | 38.00 | b | 60.00 | f | 62.00 | b | 63.00 | b | 43.00 | a | ----- | z | 22.00 | e | 24.00 | c | ----- | z | ||
1995 | 21.00 | a | 26.00 | c | 22.00 | a | 26.00 | a | 47.00 | 55.00 | b | 61.00 | o | 65.00 | y | 41.00 | 36.00 | a | 27.00 | a | 15.00 | c | ----- | z | ||
1996 | 15.00 | c | 15.00 | f | -6.00 | j | 32.00 | b | 44.00 | 58.00 | b | 64.00 | c | 63.00 | c | 38.00 | 29.00 | i | 23.00 | j | 8.00 | i | ----- | z | ||
1997 | 11.00 | b | 22.00 | 26.00 | b | 23.00 | d | 43.00 | b | 52.00 | d | 60.00 | c | 57.00 | b | 52.00 | b | ----- | z | 18.00 | d | 17.00 | f | ----- | z | |
1998 | 21.00 | a | 24.00 | b | 18.00 | b | 30.00 | c | 47.00 | b | 53.00 | e | ----- | z | ----- | z | 58.00 | 43.00 | c | 34.00 | a | 12.00 | ----- | z | ||
1999 | 14.00 | e | 18.00 | b | 29.00 | q | 32.00 | d | 35.00 | h | 56.00 | a | 60.00 | d | 64.00 | a | 43.00 | c | 34.00 | f | 22.00 | e | 18.00 | c | ----- | z |
2000 | 14.00 | h | 22.00 | c | 22.00 | m | ----- | z | ----- | z | ----- | z | 63.00 | o | 63.00 | 40.00 | 28.00 | g | 24.00 | a | 20.00 | c | ----- | z | ||
2001 | 21.00 | c | 20.00 | e | 28.00 | a | 35.00 | c | 45.00 | c | 58.00 | 62.00 | a | 63.00 | a | 47.00 | a | 35.00 | d | 17.00 | d | 16.00 | d | ----- | z | |
2002 | 16.00 | a | 15.00 | 14.00 | c | 37.00 | a | 42.00 | b | 57.00 | e | 63.00 | c | 65.00 | c | 49.00 | b | 40.00 | a | 26.00 | 22.00 | a | 14.00 | v | ||
2003 | 16.00 | c | 15.00 | c | 28.00 | a | 33.00 | 48.00 | 57.00 | 62.00 | a | 61.00 | 54.00 | a | 37.00 | 20.00 | 16.00 | a | 15.00 | j | ||||||
2004 | 17.00 | 14.00 | a | 32.00 | 35.00 | a | 41.00 | a | 58.00 | 59.00 | c | 57.00 | d | 49.00 | a | 40.00 | 21.00 | 12.00 | b | 12.00 | m | |||||
2005 | 17.00 | a | 25.00 | a | 26.00 | 31.00 | c | 41.00 | 53.00 | a | 60.00 | a | 58.00 | 53.00 | a | 39.00 | c | 20.00 | d | 2.00 | a | 2.00 | p | |||
2006 | 17.00 | c | 19.00 | b | 25.00 | a | 39.00 | 47.00 | a | 59.00 | 61.00 | ----- | z | 47.00 | a | 36.00 | 20.00 | b | 15.00 | a | ----- | z | ||||
2007 | 18.00 | 18.00 | a | 23.00 | 27.00 | 47.00 | 56.00 | d | 60.00 | 62.00 | a | 57.00 | 31.00 | ----- | z | ----- | z | ----- | z | |||||||
2008 | ----- | z | ----- | z | ----- | z | 32.00 | w | 38.00 | 55.00 | a | 61.00 | 59.00 | a | 47.00 | 30.00 | 22.00 | ----- | z | ----- | z | |||||
2009 | 14.00 | 23.00 | k | 23.00 | 28.00 | 47.00 | 57.00 | 62.00 | 51.00 | 42.00 | j | 26.00 | 26.00 | 14.00 | a | 14.00 | v | |||||||||
2010 | 12.00 | 21.00 | 25.00 | 28.00 | 33.00 | b | 58.00 | 60.00 | 56.00 | 53.00 | f | 35.00 | 13.00 | 17.00 | 12.00 | h | ||||||||||
2011 | 10.00 | -4.00 | 25.00 | 37.00 | 36.00 | 62.00 | 67.00 | 64.00 | 53.00 | 34.00 | 24.00 | 14.00 | -4.00 | |||||||||||||
2012 | 20.00 | 21.00 | 24.00 | 32.00 | 49.00 | 55.00 | 61.00 | 63.00 | h | 48.00 | 31.00 | 28.00 | 17.00 | 17.00 | h | |||||||||||
2013 | 15.00 | 20.00 | 22.00 | 30.00 | 26.00 | 59.00 | 58.00 | 62.00 | 47.00 | 35.00 | 25.00 | 14.00 | 14.00 | |||||||||||||
2014 | 9.00 | 14.00 | 19.00 | 26.00 | 39.00 | 54.00 | 63.00 | 63.00 | 48.00 | 40.00 | 19.00 | 12.00 | 9.00 | |||||||||||||
2015 | 13.00 | 17.00 | 19.00 | 36.00 | 47.00 | 58.00 | 63.00 | 60.00 | 55.00 | 40.00 | 21.00 | 18.00 | 13.00 | |||||||||||||
2016 | 15.00 | 17.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.00 | u | ----- | z | 27.00 | ----- | z | ----- | z | |||
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 | 17.00 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 15.65 | 18.52 | 22.68 | 31.23 | 42.27 | 56.05 | 61.50 | 60.29 | 48.09 | 34.74 | 21.74 | 15.57 | 8.00 | |||||||||||||
S.D. | 3.47 | 6.43 | 4.89 | 4.33 | 5.79 | 3.08 | 1.99 | 3.48 | 5.48 | 5.57 | 5.40 | 4.50 | 8.29 | |||||||||||||
SKEW | -0.02 | -1.69 | -0.43 | -0.08 | -1.10 | -0.96 | 0.79 | -0.84 | 0.06 | -0.95 | -0.19 | -0.89 | -0.94 | |||||||||||||
MAX | 21.00 | 29.00 | 32.00 | 39.00 | 49.00 | 62.00 | 67.00 | 65.00 | 58.00 | 43.00 | 34.00 | 24.00 | 14.00 | |||||||||||||
MIN | 9.00 | -4.00 | 12.00 | 23.00 | 26.00 | 47.00 | 58.00 | 51.00 | 38.00 | 20.00 | 9.00 | 2.00 | -4.00 | |||||||||||||
YRS | 23 | 23 | 19 | 22 | 22 | 22 | 22 | 21 | 22 | 19 | 23 | 21 | 4 |