YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1914 | ----- | z | ----- | z | ----- | z | 27.12 | f | 38.68 | 44.20 | 40.15 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.01 | i | |||
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 | 27.16 | b | 37.00 | 48.28 | 49.24 | 52.34 | 42.15 | 26.13 | d | 5.35 | -24.98 | c | 29.19 | c | ||||||
1918 | -0.25 | e | ----- | z | 3.90 | a | 22.48 | g | 36.35 | 48.61 | b | 57.86 | c | 48.72 | a | 42.96 | e | 24.34 | f | 9.14 | e | 2.81 | 27.79 | c | ||
1919 | 18.47 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.15 | u | 3.93 | b | -0.98 | f | 3.93 | k |
1920 | -9.96 | e | 9.64 | -0.81 | 6.60 | 31.67 | a | 53.83 | 51.03 | 46.00 | ----- | z | ----- | z | ----- | z | ----- | z | 23.50 | d | ||||||
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | 22.84 | l | 25.76 | m | 42.41 | c | ----- | z | 54.54 | f | 51.73 | e | ----- | z | 35.13 | d | 13.07 | a | -8.50 | i | 35.59 | h |
1923 | -6.66 | c | 12.42 | b | 8.74 | h | 27.37 | 40.21 | 50.07 | a | 54.84 | c | 54.50 | 42.05 | i | 40.79 | 21.15 | g | -3.24 | 30.03 | c | |||||
1924 | 1.97 | a | 3.45 | ----- | z | ----- | z | ----- | z | ----- | z | 52.00 | s | 52.13 | a | ----- | z | ----- | z | ----- | z | ----- | z | 19.18 | i | |
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 | 52.62 | q | 52.57 | a | 47.50 | d | 39.62 | b | ----- | z | 14.82 | h | 11.15 | n | 46.56 | i |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | 42.00 | m | 49.98 | c | 54.24 | 49.14 | c | 42.85 | d | 32.90 | p | ----- | z | ----- | z | 49.05 | h | |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.80 | y | 50.72 | b | 52.47 | l | 40.86 | h | 21.85 | 2.85 | 0.61 | 19.01 | h | |||
1942 | 7.87 | 14.56 | a | 11.98 | 25.25 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.53 | a | -14.02 | c | 4.39 | g | ||
1943 | -7.31 | 9.54 | d | 9.05 | a | 28.92 | 40.95 | b | 51.57 | c | 50.86 | c | 48.62 | b | 40.67 | c | 28.83 | b | 16.93 | b | 12.15 | 27.56 | ||||
1944 | 3.26 | 11.98 | 11.02 | a | 21.45 | 40.19 | 51.71 | a | 55.10 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.27 | f | ||||
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 | 52.09 | i | 48.71 | 38.45 | a | 26.16 | 8.75 | 10.95 | a | 26.60 | g | |||
1961 | 5.87 | a | 1.48 | a | 2.06 | 22.87 | 39.02 | 48.65 | 51.35 | a | 48.65 | 38.62 | 18.55 | a | 1.36 | b | -15.07 | b | 21.95 | |||||||
1962 | -2.79 | b | 5.36 | 7.87 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.60 | d | 26.32 | 5.76 | a | 0.98 | a | 10.87 | e | |||
1963 | 9.12 | b | ----- | z | ----- | z | ----- | z | ----- | z | 46.34 | a | 52.00 | a | 52.10 | 44.88 | a | 29.58 | -0.22 | c | 7.60 | 30.17 | d | |||
1964 | -0.06 | 11.17 | 5.69 | 20.88 | a | 26.84 | 49.90 | t | 53.79 | x | 46.68 | 39.98 | 26.34 | ----- | z | -14.55 | a | 18.11 | c | |||||||
1965 | -11.25 | a | ----- | z | 25.69 | 24.69 | a | ----- | z | ----- | z | 52.82 | a | 49.38 | b | ----- | z | ----- | z | ----- | z | -6.94 | 22.40 | f | ||
1966 | -16.18 | c | 4.11 | a | 4.39 | 23.63 | 37.10 | a | 51.50 | 54.03 | 47.03 | 40.50 | 20.60 | b | 7.16 | a | -6.52 | a | 22.28 | |||||||
1967 | ----- | z | 2.54 | 9.57 | a | 22.79 | d | 38.06 | 51.71 | f | 51.11 | 50.90 | e | 40.71 | a | 20.91 | b | 13.32 | b | -1.37 | 24.85 | b | ||||
1968 | -7.93 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -7.93 | k |
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 | 10.00 | p | 9.88 | n | 23.91 | a | 35.69 | r | 48.89 | k | 51.68 | i | ----- | z | ----- | z | 28.44 | w | 3.50 | l | -9.67 | j | 23.91 | k |
1976 | 2.66 | o | 0.77 | r | ----- | z | 23.29 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.30 | a | -3.80 | y | -4.09 | h | 26.30 | k |
1978 | 5.91 | n | 6.48 | d | 16.94 | g | 23.83 | i | 41.13 | 48.40 | e | 53.60 | b | 51.81 | d | 42.30 | e | 27.46 | e | 9.45 | a | 2.24 | f | 35.08 | d | |
1979 | -1.34 | -16.85 | b | 15.50 | 24.00 | b | 37.28 | h | 49.14 | p | 53.89 | c | 52.07 | b | 42.95 | h | 30.56 | 19.52 | a | -8.43 | a | 18.77 | c | |||
1980 | -3.65 | a | 14.07 | b | 13.15 | a | 29.71 | a | 40.55 | b | 49.80 | h | 53.09 | c | 48.13 | a | 38.10 | e | 27.45 | c | 15.72 | a | -19.03 | b | 23.39 | a |
1981 | 18.54 | c | 13.10 | d | 21.43 | d | 21.00 | b | 44.44 | f | 49.29 | f | 50.76 | b | 49.16 | c | 37.76 | c | 26.68 | c | 6.79 | a | 1.09 | c | 24.63 | b |
1982 | -17.69 | g | 1.48 | d | 13.21 | j | 21.29 | a | 36.50 | e | 49.69 | a | 53.54 | e | 49.90 | b | 41.46 | f | 15.50 | f | 5.98 | b | 3.45 | b | 27.73 | d |
1983 | -3.69 | d | 8.82 | f | 12.15 | e | 28.85 | 40.34 | f | 50.88 | a | 54.00 | 46.17 | b | 34.67 | 22.93 | c | 8.50 | a | -1.52 | f | 28.27 | c | |||
1984 | 2.28 | d | 2.38 | c | 20.48 | b | 25.60 | a | 38.00 | g | ----- | z | 51.57 | a | 49.05 | a | 41.24 | c | 23.50 | e | 3.75 | 3.98 | b | 22.38 | b | |
1985 | ----- | z | -3.72 | c | 13.68 | c | 16.24 | e | 36.27 | 47.93 | p | 53.87 | d | 46.74 | 39.34 | e | 19.98 | b | -3.83 | c | 17.08 | f | 24.29 | c | ||
1986 | 7.09 | c | 7.24 | a | 8.65 | d | 14.96 | b | 38.02 | b | 49.10 | i | 54.78 | a | 45.80 | c | 40.56 | d | 26.95 | b | 3.37 | d | 15.68 | f | 24.74 | b |
1987 | 8.75 | c | 9.73 | f | 12.18 | f | 26.17 | 40.07 | b | 48.42 | d | 54.70 | d | 50.59 | c | 38.61 | c | 30.89 | c | 14.38 | 1.29 | g | 34.73 | c | ||
1988 | 2.50 | h | 9.62 | h | 17.16 | c | 26.50 | 39.12 | k | 51.43 | b | 55.06 | 47.66 | f | ----- | z | 22.06 | g | 0.57 | b | 5.13 | e | 25.98 | f | ||
1989 | -13.30 | d | -1.56 | d | 6.83 | g | 28.28 | a | 42.33 | j | 49.52 | 56.59 | c | 54.12 | c | 43.41 | g | 23.71 | b | ----- | z | 14.46 | f | 28.19 | e | |
1990 | -1.27 | a | -8.59 | e | 14.71 | e | 28.65 | ----- | z | 51.63 | c | 54.77 | a | 51.96 | c | 40.71 | d | ----- | z | -6.34 | b | -1.85 | d | 22.44 | b | |
1991 | -1.05 | 9.37 | e | 11.94 | d | 26.26 | a | 41.20 | k | 52.58 | d | 51.82 | 47.06 | d | 42.14 | i | 20.41 | c | 6.81 | a | 6.23 | c | 23.14 | b | ||
1992 | 8.66 | f | 3.74 | f | 11.74 | j | 20.44 | d | 31.83 | e | 52.31 | i | 53.91 | b | 47.05 | a | 27.96 | c | 17.94 | d | 11.45 | b | -5.57 | d | 25.63 | d |
1993 | -3.81 | d | 10.66 | f | 16.02 | k | 30.52 | b | 44.48 | b | 51.60 | a | 55.21 | b | 50.73 | e | 40.10 | f | 27.55 | c | 10.54 | d | 7.38 | b | 30.47 | c |
1994 | 3.21 | e | 0.00 | j | 15.86 | c | 29.38 | b | 38.75 | k | 50.19 | a | 53.71 | c | 55.29 | b | 38.67 | j | 21.91 | d | 1.70 | e | 1.24 | n | 28.91 | d |
1995 | 0.95 | c | 4.47 | h | 3.78 | f | 30.71 | d | 42.88 | b | 50.12 | f | 53.57 | b | 48.33 | g | 45.25 | d | 28.55 | c | 4.16 | b | -1.66 | i | 29.44 | e |
1996 | -18.32 | a | 6.50 | c | 12.22 | d | 28.30 | c | 40.10 | j | 50.22 | 52.82 | i | 47.12 | c | 36.57 | i | 11.83 | b | -0.04 | e | -2.02 | g | 17.23 | d | |
1997 | -4.02 | c | 18.13 | e | 5.24 | j | 26.30 | b | 40.68 | f | 51.83 | a | 55.91 | d | 50.84 | f | 42.80 | c | 16.48 | g | 15.75 | f | 5.35 | d | 28.04 | e |
1998 | -8.21 | s | 8.64 | g | 15.97 | a | 30.98 | b | 41.20 | f | 50.50 | c | 52.11 | c | 45.79 | b | 38.65 | d | 20.03 | n | 6.96 | d | -2.30 | d | 29.83 | d |
1999 | -5.58 | e | -6.54 | d | 11.11 | h | 25.33 | f | 37.10 | g | 51.80 | b | 52.74 | d | 49.92 | a | 39.92 | e | 24.28 | f | 5.48 | c | 6.00 | o | 26.82 | e |
2000 | 0.77 | i | 15.81 | h | 17.05 | i | 24.26 | g | 35.00 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | 12.55 | u | 28.10 | 34.92 | 52.66 | a | 52.50 | 51.38 | b | 42.17 | d | 22.15 | a | 0.28 | c | -12.94 | n | 35.52 | d | |||
2002 | ----- | z | 5.04 | d | 6.41 | b | 18.73 | b | 45.54 | h | 49.87 | 53.53 | ----- | z | 42.20 | e | ----- | z | ----- | z | ----- | z | 29.30 | f | ||
2003 | 2.02 | a | 21.60 | d | 7.18 | c | 23.70 | b | 40.98 | c | 51.05 | a | 55.97 | a | 49.08 | 36.45 | ----- | z | ----- | z | ----- | z | 32.00 | c | ||
2004 | ----- | z | 21.62 | e | 17.12 | r | 31.43 | o | 45.27 | a | 57.05 | a | 55.63 | 56.36 | b | 33.19 | f | 27.17 | d | 13.54 | c | 6.13 | p | 39.52 | e | |
2005 | -4.65 | h | 8.20 | e | 19.95 | 27.66 | e | 45.23 | 53.57 | a | 53.52 | a | 52.56 | 41.40 | a | 25.30 | a | -1.61 | b | ----- | z | 32.58 | b | |||
2006 | -8.66 | b | 2.69 | b | 3.28 | b | 24.52 | f | 40.48 | b | 48.64 | a | 53.91 | i | 47.92 | a | 41.82 | 28.89 | -10.33 | a | 8.36 | b | 20.31 | b | ||
2007 | 5.56 | e | -2.12 | c | -4.93 | d | 27.52 | a | 40.97 | b | 52.55 | b | 54.47 | 52.00 | b | 41.15 | 24.83 | b | 16.41 | b | 3.38 | e | 25.98 | |||
2008 | -3.11 | c | 4.76 | j | ----- | z | 23.60 | f | 39.70 | d | 47.95 | a | 48.66 | c | 46.07 | a | 39.50 | b | 16.17 | a | 8.09 | a | -4.26 | b | 26.53 | c |
2009 | -5.17 | b | -3.88 | p | 6.57 | h | 23.47 | a | 41.57 | a | 49.73 | 56.97 | 48.35 | 41.65 | 29.35 | 3.40 | i | 4.50 | e | 32.27 | c | |||||
2010 | -1.88 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -1.88 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -1.69 | 5.96 | 10.87 | 24.69 | 38.94 | 50.49 | 53.10 | 49.68 | 39.95 | 25.27 | 6.16 | -1.47 | 24.44 | |||||||||||||
S.D. | 7.54 | 8.50 | 6.92 | 4.99 | 4.08 | 2.32 | 2.83 | 2.71 | 3.33 | 5.34 | 6.55 | 9.10 | 2.77 | |||||||||||||
SKEW | 0.12 | -0.40 | -0.09 | -1.50 | -0.97 | 0.01 | -2.20 | 0.48 | -1.60 | 0.17 | -0.15 | -0.80 | 0.15 | |||||||||||||
MAX | 18.54 | 21.62 | 25.69 | 30.98 | 45.27 | 57.05 | 57.86 | 56.36 | 45.25 | 40.79 | 19.52 | 12.15 | 27.56 | |||||||||||||
MIN | -18.32 | -16.85 | -4.93 | 6.60 | 26.84 | 44.20 | 40.15 | 45.79 | 27.96 | 11.83 | -10.33 | -24.98 | 21.95 | |||||||||||||
YRS | 36 | 31 | 29 | 37 | 29 | 34 | 43 | 43 | 34 | 36 | 39 | 30 | 4 |