YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | 23.00 | 32.00 | 34.00 | 42.00 | a | 42.00 | 52.00 | 68.00 | 63.00 | 54.00 | 45.00 | 30.00 | 25.00 | 23.00 | a | |||||||||||
1931 | 27.00 | 35.00 | 34.00 | 44.00 | 54.00 | 56.00 | 73.00 | 68.00 | 52.00 | 47.00 | 24.00 | 26.00 | 24.00 | |||||||||||||
1932 | 22.00 | 27.00 | 32.00 | 36.00 | 41.00 | 49.00 | 63.00 | 64.00 | 61.00 | 41.00 | 37.00 | 26.00 | 22.00 | |||||||||||||
1933 | 28.00 | 18.00 | 34.00 | 33.00 | 41.00 | 52.00 | 72.00 | 67.00 | 61.00 | 53.00 | 36.00 | 24.00 | 18.00 | |||||||||||||
1934 | 23.00 | 35.00 | 39.00 | 39.00 | 48.00 | 56.00 | 72.00 | 70.00 | 49.00 | 44.00 | 31.00 | 24.00 | 23.00 | |||||||||||||
1935 | 23.00 | 28.00 | 30.00 | 32.00 | 34.00 | 52.00 | 59.00 | 68.00 | 55.00 | 30.00 | 30.00 | 29.00 | 23.00 | |||||||||||||
1936 | 26.00 | a | 30.00 | 30.00 | 34.00 | 51.00 | 53.00 | 64.00 | 69.00 | 48.00 | 46.00 | 31.00 | 30.00 | 26.00 | a | |||||||||||
1937 | 16.00 | 28.00 | 32.00 | 39.00 | 48.00 | 56.00 | 69.00 | 72.00 | 64.00 | 49.00 | 35.00 | 32.00 | 16.00 | |||||||||||||
1938 | 28.00 | 25.00 | 29.00 | 35.00 | 42.00 | 57.00 | 63.00 | 62.00 | 64.00 | 40.00 | 23.00 | 33.00 | 23.00 | |||||||||||||
1939 | 30.00 | a | 23.00 | 29.00 | 39.00 | 52.00 | 50.00 | 68.00 | 65.00 | 56.00 | 39.00 | 41.00 | 28.00 | 23.00 | a | |||||||||||
1940 | 25.00 | 30.00 | 34.00 | 44.00 | 52.00 | 61.00 | 66.00 | 65.00 | 64.00 | 42.00 | 32.00 | 28.00 | 25.00 | |||||||||||||
1941 | 32.00 | 38.00 | 35.00 | 33.00 | 50.00 | 52.00 | 58.00 | 62.00 | a | 48.00 | 38.00 | 30.00 | 26.00 | 26.00 | a | |||||||||||
1942 | 26.00 | 26.00 | 31.00 | 39.00 | 43.00 | 57.00 | 68.00 | a | 60.00 | a | 58.00 | a | 36.00 | 36.00 | 32.00 | a | 26.00 | d | ||||||||
1943 | 23.00 | 26.00 | b | 37.00 | d | 37.00 | a | 47.00 | b | 52.00 | b | 62.00 | a | 60.00 | a | 57.00 | 40.00 | 34.00 | 32.00 | a | 23.00 | n | ||||
1944 | 29.00 | 31.00 | 30.00 | b | 40.00 | b | 46.00 | 50.00 | a | 64.00 | 70.00 | 62.00 | b | 50.00 | 32.00 | a | 28.00 | b | 28.00 | j | ||||||
1945 | 28.00 | a | 32.00 | a | 33.00 | a | 32.00 | 37.00 | 52.00 | a | 67.00 | 70.00 | 53.00 | 40.00 | 32.00 | 22.00 | 22.00 | d | ||||||||
1946 | 23.00 | 22.00 | 33.00 | 40.00 | a | 52.00 | 61.00 | 66.00 | 70.00 | 64.00 | 39.00 | a | 34.00 | b | 28.00 | b | 22.00 | f | ||||||||
1947 | 20.00 | 32.00 | a | 35.00 | 37.00 | 50.00 | 63.00 | o | 68.00 | 67.00 | 63.00 | 43.00 | 30.00 | a | 28.00 | 20.00 | q | |||||||||
1948 | 22.00 | 23.00 | i | 29.00 | ----- | 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 | 35.00 | u | ----- | z |
1962 | 22.00 | i | 26.00 | 31.00 | 43.00 | 48.00 | 52.00 | 68.00 | 64.00 | 60.00 | 48.00 | 36.00 | 32.00 | a | 22.00 | j | ||||||||||
1963 | 12.00 | 30.00 | 27.00 | 37.00 | 53.00 | 54.00 | a | 69.00 | b | 66.00 | 62.00 | t | 52.00 | 36.00 | 25.00 | 12.00 | w | |||||||||
1964 | 21.00 | 26.00 | 30.00 | 38.00 | 37.00 | 54.00 | 71.00 | 66.00 | 61.00 | b | 47.00 | 27.00 | 24.00 | 21.00 | b | |||||||||||
1965 | 30.00 | 26.00 | 27.00 | 34.00 | 37.00 | 51.00 | 71.00 | 64.00 | 46.00 | 43.00 | 34.00 | 29.00 | 26.00 | |||||||||||||
1966 | 26.00 | 25.00 | b | 25.00 | d | 38.00 | 51.00 | 55.00 | h | 69.00 | 66.00 | 60.00 | 43.00 | 34.00 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | 34.00 | 37.00 | 48.00 | 57.00 | 65.00 | 69.00 | a | 64.00 | 51.00 | 32.00 | 27.00 | ----- | z | |||||||||
2002 | 22.00 | 30.00 | 25.00 | 43.00 | 47.00 | 64.00 | 71.00 | 66.00 | 55.00 | 46.00 | 40.00 | a | 26.00 | 22.00 | a | |||||||||||
2003 | 35.00 | 31.00 | 38.00 | 36.00 | 45.00 | 60.00 | h | 69.00 | 69.00 | 65.00 | 52.00 | 28.00 | a | 24.00 | 24.00 | i | ||||||||||
2004 | 25.00 | 25.00 | 36.00 | a | 43.00 | 53.00 | 58.00 | 60.00 | 64.00 | 54.00 | a | 44.00 | a | 27.00 | 28.00 | 25.00 | c | |||||||||
2005 | 31.00 | 35.00 | 33.00 | 38.00 | 48.00 | 55.00 | 67.00 | 69.00 | 57.00 | 49.00 | 31.00 | 24.00 | 24.00 | |||||||||||||
2006 | 28.00 | a | 32.00 | 32.00 | 39.00 | 52.00 | 58.00 | 73.00 | 71.00 | 55.00 | 45.00 | 27.00 | 28.00 | 27.00 | a | |||||||||||
2007 | 22.00 | 34.00 | 33.00 | 40.00 | 50.00 | 56.00 | 71.00 | 71.00 | 54.00 | 47.00 | 39.00 | 26.00 | 22.00 | |||||||||||||
2008 | 23.00 | 29.00 | 33.00 | 44.00 | 44.00 | 59.00 | 67.00 | 70.00 | 64.00 | 39.00 | 41.00 | 29.00 | 23.00 | |||||||||||||
2009 | 32.00 | 31.00 | 37.00 | 37.00 | 58.00 | 58.00 | 74.00 | 64.00 | 61.00 | 36.00 | 40.00 | 28.00 | 28.00 | |||||||||||||
2010 | 32.00 | 31.00 | 33.00 | 34.00 | 41.00 | 54.00 | 67.00 | 61.00 | 59.00 | 49.00 | 29.00 | 25.00 | 25.00 | |||||||||||||
2011 | 24.00 | 17.00 | 40.00 | 35.00 | 41.00 | 57.00 | 67.00 | 74.00 | 62.00 | 46.00 | 36.00 | 27.00 | 17.00 | |||||||||||||
2012 | 34.00 | 32.00 | 34.00 | 44.00 | 54.00 | 63.00 | 69.00 | 70.00 | 63.00 | 49.00 | 36.00 | 29.00 | 29.00 | |||||||||||||
2013 | 18.00 | 30.00 | 37.00 | 42.00 | 52.00 | 66.00 | 71.00 | 69.00 | 56.00 | 45.00 | 41.00 | 26.00 | 18.00 | |||||||||||||
2014 | 33.00 | 32.00 | 39.00 | 40.00 | 50.00 | 61.00 | 71.00 | 66.00 | 55.00 | 50.00 | 34.00 | 27.00 | 27.00 | |||||||||||||
2015 | 25.00 | 38.00 | 39.00 | 45.00 | 44.00 | 59.00 | 66.00 | 71.00 | 65.00 | 46.00 | 28.00 | 25.00 | 25.00 | |||||||||||||
2016 | 29.00 | 24.00 | 39.00 | 43.00 | 49.00 | 63.00 | 70.00 | 68.00 | 52.00 | 52.00 | 33.00 | 27.00 | 24.00 | |||||||||||||
2017 | 28.00 | 30.00 | 33.00 | 40.00 | 49.00 | 52.00 | 70.00 | 66.00 | 51.00 | 54.00 | 42.00 | 28.00 | 28.00 | |||||||||||||
2018 | 28.00 | 29.00 | 37.00 | 42.00 | 47.00 | 63.00 | 70.00 | 65.00 | 66.00 | 48.00 | 34.00 | 27.00 | 27.00 | |||||||||||||
2019 | 24.00 | 26.00 | 32.00 | 41.00 | 47.00 | 59.00 | 65.00 | 72.00 | 56.00 | 29.00 | 34.00 | 26.00 | 24.00 | |||||||||||||
2020 | 29.00 | 25.00 | 35.00 | 41.00 | c | 54.00 | 61.00 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.83 | 28.86 | 33.16 | 38.81 | 47.19 | 56.18 | 67.64 | 66.98 | 57.90 | 44.57 | 33.26 | 27.27 | 23.70 | |||||||||||||
S.D. | 4.84 | 4.60 | 3.75 | 3.64 | 5.45 | 4.36 | 3.77 | 3.45 | 5.42 | 5.81 | 4.66 | 2.55 | 3.15 | |||||||||||||
SKEW | -0.42 | -0.35 | -0.19 | -0.17 | -0.52 | 0.38 | -0.70 | -0.21 | -0.37 | -0.70 | -0.03 | 0.42 | -0.71 | |||||||||||||
MAX | 35.00 | 38.00 | 40.00 | 45.00 | 58.00 | 66.00 | 74.00 | 74.00 | 66.00 | 54.00 | 42.00 | 33.00 | 29.00 | |||||||||||||
MIN | 12.00 | 17.00 | 25.00 | 32.00 | 34.00 | 49.00 | 58.00 | 60.00 | 46.00 | 29.00 | 23.00 | 22.00 | 16.00 | |||||||||||||
YRS | 42 | 42 | 44 | 43 | 43 | 39 | 42 | 42 | 41 | 42 | 42 | 41 | 33 |