YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | 30.00 | u | 31.00 | 30.00 | 38.00 | 48.00 | 50.00 | 68.00 | 56.00 | 54.00 | 42.00 | 38.00 | 34.00 | 30.00 | u | |||||||||||
1918 | 30.00 | 34.00 | 34.00 | 44.00 | 42.00 | 58.00 | 60.00 | 52.00 | 44.00 | ----- | z | 32.00 | 26.00 | ----- | z | |||||||||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 48.00 | 50.00 | 53.00 | 55.00 | 52.00 | 41.00 | 37.00 | 26.00 | ----- | z | ||||||||
1998 | 30.00 | 34.00 | 34.00 | 35.00 | 43.00 | 47.00 | 52.00 | 53.00 | 47.00 | 40.00 | 34.00 | 22.00 | 22.00 | |||||||||||||
1999 | 28.00 | 27.00 | 31.00 | 28.00 | 39.00 | 42.00 | 51.00 | 47.00 | 42.00 | 38.00 | 28.00 | 26.00 | 26.00 | |||||||||||||
2000 | 25.00 | d | 30.00 | 27.00 | 35.00 | 39.00 | 43.00 | 47.00 | 49.00 | 50.00 | 43.00 | 31.00 | 33.00 | 25.00 | d | |||||||||||
2001 | 27.00 | b | 25.00 | 35.00 | 31.00 | 44.00 | 41.00 | 44.00 | 52.00 | 48.00 | 44.00 | 28.00 | 28.00 | 25.00 | b | |||||||||||
2002 | 23.00 | 23.00 | 29.00 | 37.00 | a | 39.00 | 45.00 | 49.00 | 47.00 | 48.00 | 40.00 | 34.00 | 30.00 | 23.00 | a | |||||||||||
2003 | 31.00 | 31.00 | 34.00 | 32.00 | 38.00 | 46.00 | 53.00 | 53.00 | 49.00 | 43.00 | 29.00 | 24.00 | 24.00 | |||||||||||||
2004 | 27.00 | 29.00 | 38.00 | 39.00 | 45.00 | 46.00 | 47.00 | 48.00 | 43.00 | 40.00 | 23.00 | 25.00 | 23.00 | |||||||||||||
2005 | 30.00 | 32.00 | 36.00 | 36.00 | 40.00 | 45.00 | 52.00 | 53.00 | 41.00 | 43.00 | 29.00 | 28.00 | 28.00 | |||||||||||||
2006 | 27.00 | 28.00 | 28.00 | 33.00 | 42.00 | b | 49.00 | 58.00 | 46.00 | 46.00 | a | 41.00 | 28.00 | 28.00 | 27.00 | c | ||||||||||
2007 | 27.00 | 32.00 | 30.00 | 34.00 | 40.00 | 40.00 | 50.00 | 53.00 | 42.00 | 40.00 | 39.00 | 21.00 | 21.00 | |||||||||||||
2008 | 29.00 | 32.00 | 36.00 | 36.00 | 39.00 | 47.00 | 53.00 | m | 53.00 | n | 48.00 | r | 44.00 | n | 34.00 | s | 31.00 | t | ----- | z | ||||||
2009 | 29.00 | 29.00 | 34.00 | 34.00 | 48.00 | 45.00 | 49.00 | 50.00 | 46.00 | 34.00 | 34.00 | 32.00 | 29.00 | |||||||||||||
2010 | 34.00 | 32.00 | 34.00 | 34.00 | 39.00 | 47.00 | 51.00 | 48.00 | 47.00 | 43.00 | 29.00 | 30.00 | 29.00 | |||||||||||||
2011 | 32.00 | 27.00 | g | 34.00 | 34.00 | 39.00 | 43.00 | 52.00 | 53.00 | 52.00 | 42.00 | 30.00 | 25.00 | 25.00 | g | |||||||||||
2012 | 26.00 | m | 31.00 | 29.00 | 39.00 | 43.00 | 50.00 | 51.00 | 56.00 | 59.00 | 45.00 | 38.00 | 32.00 | 26.00 | m | |||||||||||
2013 | 28.00 | 33.00 | 39.00 | d | 38.00 | 45.00 | 50.00 | 58.00 | 53.00 | 50.00 | 43.00 | 40.00 | 32.00 | 28.00 | d | |||||||||||
2014 | 43.00 | 37.00 | 42.00 | 38.00 | 45.00 | 49.00 | 55.00 | 55.00 | 53.00 | 51.00 | 45.00 | 33.00 | a | 33.00 | a | |||||||||||
2015 | 31.00 | 45.00 | 34.00 | 39.00 | 43.00 | c | 51.00 | 53.00 | 56.00 | 55.00 | 53.00 | d | 39.00 | c | 33.00 | 31.00 | j | |||||||||
2016 | 37.00 | a | 34.00 | 38.00 | 40.00 | 44.00 | 51.00 | 56.00 | 55.00 | 49.00 | a | 49.00 | a | 41.00 | a | 33.00 | 33.00 | d | ||||||||
2017 | 36.00 | a | 35.00 | 35.00 | 40.00 | 40.00 | b | 50.00 | 58.00 | 57.00 | 48.00 | 47.00 | 45.00 | 35.00 | 35.00 | c | ||||||||||
2018 | 37.00 | 30.00 | 37.00 | 40.00 | 46.00 | 50.00 | 56.00 | 56.00 | 56.00 | 49.00 | 45.00 | 33.00 | 30.00 | |||||||||||||
2019 | 31.00 | 30.00 | 39.00 | 45.00 | b | 44.00 | a | 51.00 | 53.00 | 57.00 | 47.00 | 44.00 | 37.00 | 35.00 | 30.00 | c | ||||||||||
2020 | 37.00 | 31.00 | 37.00 | 43.00 | 45.00 | 50.00 | 54.00 | 57.00 | 59.00 | 47.00 | 37.00 | 37.00 | 31.00 | |||||||||||||
2021 | 32.00 | 38.00 | 34.00 | 40.00 | 40.00 | 48.00 | 63.00 | 58.00 | 54.00 | 42.00 | 46.00 | 34.00 | c | 32.00 | c | |||||||||||
2022 | 39.00 | 31.00 | e | 36.00 | a | 39.00 | 40.00 | 50.00 | 54.00 | 61.00 | 51.00 | 47.00 | 39.00 | 36.00 | 31.00 | f | ||||||||||
2023 | 35.00 | 30.00 | 33.00 | 37.00 | 43.00 | 47.00 | 54.00 | 60.00 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.35 | 31.63 | 34.18 | 37.07 | 42.41 | 47.62 | 53.61 | 53.19 | 49.33 | 43.50 | 35.37 | 30.04 | 27.70 | |||||||||||||
S.D. | 4.72 | 4.20 | 3.62 | 3.89 | 3.05 | 3.76 | 4.99 | 3.83 | 4.91 | 4.18 | 6.23 | 4.45 | 4.01 | |||||||||||||
SKEW | 0.57 | 0.93 | -0.15 | -0.09 | 0.33 | 0.12 | 0.78 | -0.26 | 0.23 | 0.28 | 0.03 | -0.39 | 0.04 | |||||||||||||
MAX | 43.00 | 45.00 | 42.00 | 45.00 | 48.00 | 58.00 | 68.00 | 61.00 | 59.00 | 53.00 | 46.00 | 37.00 | 35.00 | |||||||||||||
MIN | 23.00 | 23.00 | 27.00 | 28.00 | 38.00 | 40.00 | 44.00 | 46.00 | 41.00 | 34.00 | 23.00 | 21.00 | 21.00 | |||||||||||||
YRS | 26 | 27 | 28 | 28 | 29 | 29 | 28 | 27 | 27 | 26 | 27 | 27 | 20 |