YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | 73.81 | ----- | z | ----- | z | ----- | z | ----- | z | 73.81 | k | |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.42 | 63.80 | ----- | z | ----- | z | ----- | z | 65.11 | j | ||
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 | 77.28 | f | 74.33 | h | 69.12 | j | 50.82 | q | 42.27 | s | 33.16 | o | ----- | z |
1999 | 37.41 | t | 38.00 | q | 43.77 | p | 48.53 | m | 56.54 | r | 66.79 | r | 69.83 | e | 73.29 | j | 60.89 | l | 51.88 | r | 42.33 | r | 37.50 | t | 69.83 | k |
2000 | 34.88 | s | 40.46 | p | 44.00 | u | 55.95 | s | 57.67 | p | 66.50 | p | 71.58 | g | 69.21 | j | 60.43 | h | 51.05 | u | 34.50 | p | 30.42 | r | ----- | z |
2001 | 34.03 | o | 34.75 | p | 45.35 | r | 50.82 | p | 56.45 | t | ----- | z | 72.90 | j | 73.73 | i | 66.50 | o | 49.10 | p | 40.57 | p | 33.94 | v | ----- | z |
2002 | 34.97 | m | 35.97 | m | 42.00 | s | 49.83 | i | 57.00 | m | 64.14 | w | 76.46 | h | 68.11 | i | 63.60 | d | 47.82 | n | 39.64 | l | 37.03 | m | 63.60 | k |
2003 | 38.36 | m | 38.33 | m | 45.34 | l | 52.53 | m | 57.53 | m | 67.85 | m | 76.58 | g | 75.90 | p | 63.12 | n | 54.34 | l | 36.50 | n | 34.40 | j | ----- | z |
2004 | 31.21 | n | 38.69 | k | 47.80 | i | 53.74 | g | 58.57 | h | 67.88 | f | 73.96 | d | 72.21 | g | 59.96 | e | 50.75 | e | 37.98 | a | 34.10 | b | 51.35 | g |
2005 | 34.38 | f | 36.42 | b | 44.47 | a | 48.67 | d | 54.12 | b | 60.02 | d | 72.19 | e | 70.61 | h | 57.90 | f | 47.32 | i | 35.40 | a | 26.45 | c | 47.22 | d |
2006 | 37.02 | b | 34.70 | c | 42.20 | c | 50.25 | b | 57.18 | c | 63.86 | h | 76.02 | j | 70.27 | c | 66.20 | 48.93 | c | 39.91 | a | 32.29 | b | 47.89 | b | |
2007 | 28.69 | 39.41 | a | 46.43 | c | 50.13 | d | 59.10 | b | 65.38 | 78.33 | b | 70.97 | 61.35 | 51.27 | 38.52 | b | 33.41 | b | 51.92 | ||||||
2008 | 29.42 | 39.14 | 40.38 | b | 46.08 | d | 58.50 | b | 63.35 | 71.15 | e | 71.42 | 60.83 | 49.44 | 41.64 | a | 30.03 | 50.11 | ||||||||
2009 | 31.03 | a | 38.02 | 40.19 | 49.58 | 58.97 | a | 66.28 | 73.29 | 72.52 | 66.37 | 46.60 | 38.93 | 24.74 | 50.54 | |||||||||||
2010 | 35.29 | 40.30 | 44.32 | 49.68 | 55.79 | 64.08 | 70.21 | 70.60 | 63.25 | 52.13 | 37.15 | 32.04 | c | 51.24 | ||||||||||||
2011 | 31.68 | 36.74 | k | 43.50 | a | 45.63 | 50.95 | t | 62.22 | 68.98 | 71.87 | a | 64.67 | 50.73 | 36.80 | 31.76 | 50.78 | b | ||||||||
2012 | 32.94 | 37.33 | 44.16 | 53.72 | 56.61 | 64.68 | 73.44 | 72.56 | f | 61.50 | 48.08 | 41.78 | 35.58 | 49.98 | a | |||||||||||
2013 | 29.63 | a | 39.36 | 44.19 | 48.78 | 59.61 | 66.40 | 74.24 | 73.66 | 66.08 | 47.35 | 37.79 | b | 26.85 | 51.16 | |||||||||||
2014 | 32.79 | 33.88 | 43.68 | c | 50.33 | 58.87 | 63.10 | 75.21 | 73.00 | 63.58 | 54.77 | 37.98 | 35.28 | d | 51.87 | |||||||||||
2015 | 35.02 | 42.52 | 48.20 | a | 50.78 | 61.19 | 70.83 | a | 74.44 | 72.50 | 62.56 | c | 57.47 | 38.97 | a | 34.08 | 54.05 | |||||||||
2016 | 34.76 | 42.69 | 46.31 | 56.45 | 60.08 | 66.48 | 69.62 | a | 70.84 | 62.57 | a | 50.50 | 43.81 | c | 26.37 | 52.54 | ||||||||||
2017 | 22.68 | 35.27 | 45.42 | 50.88 | 59.45 | 65.75 | 74.74 | 72.71 | 62.47 | 48.66 | 39.81 | a | 29.95 | 50.65 | ||||||||||||
2018 | 36.34 | 36.02 | 44.08 | 51.27 | 63.13 | 64.10 | 71.45 | 70.40 | 60.37 | 50.06 | 40.18 | 32.24 | 51.64 | |||||||||||||
2019 | 33.26 | 31.18 | 38.61 | 51.50 | 59.65 | 64.87 | 69.77 | 73.06 | 63.08 | 44.06 | 37.58 | 32.26 | 49.91 | |||||||||||||
2020 | 34.84 | 37.48 | 42.77 | 50.15 | 58.52 | 63.55 | 70.03 | 71.55 | a | 63.09 | a | 48.69 | 37.40 | 32.58 | 50.89 | |||||||||||
2021 | 36.16 | 33.71 | 43.08 | 49.86 | a | ----- | z | 70.75 | h | 72.75 | g | 70.16 | o | 61.25 | v | 53.05 | i | ----- | z | ----- | z | 40.70 | h | |||
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.25 | y | 63.50 | v | ----- | z | ----- | z | ----- | z | ----- | z |
2023 | ----- | z | 36.41 | l | ----- | z | 44.40 | y | 66.56 | o | 69.05 | b | 74.05 | 75.21 | q | 65.67 | c | 52.76 | 39.81 | a | ----- | z | 60.27 | g | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.60 | 37.34 | 43.65 | 50.22 | 58.72 | 65.01 | 72.50 | 71.60 | 63.21 | 50.13 | 38.97 | 31.18 | 51.38 | |||||||||||||
S.D. | 3.70 | 3.20 | 2.39 | 2.48 | 2.18 | 2.58 | 2.53 | 1.79 | 1.94 | 3.12 | 2.04 | 3.29 | 1.14 | |||||||||||||
SKEW | -1.17 | -0.02 | -0.31 | 0.48 | -0.21 | 0.44 | 0.42 | -1.39 | 0.13 | 0.46 | 0.62 | -0.62 | 0.93 | |||||||||||||
MAX | 37.02 | 42.69 | 48.20 | 56.45 | 63.13 | 70.83 | 78.33 | 73.81 | 66.37 | 57.47 | 43.81 | 35.58 | 54.05 | |||||||||||||
MIN | 22.68 | 31.18 | 38.61 | 45.63 | 54.12 | 60.02 | 68.98 | 66.42 | 59.96 | 44.06 | 35.40 | 24.74 | 49.91 | |||||||||||||
YRS | 16 | 16 | 17 | 17 | 15 | 16 | 18 | 16 | 19 | 17 | 18 | 17 | 12 |