YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.38 | e | 37.63 | c | 33.40 | a | 16.75 | b | 5.32 | c | 28.70 | g |
1930 | -10.73 | a | 11.33 | a | 16.84 | 32.47 | 37.58 | 51.67 | 55.55 | 54.28 | b | 40.50 | d | 30.81 | 15.83 | a | 11.24 | b | 28.95 | |||||||
1931 | 11.35 | 16.21 | 14.65 | 27.53 | 35.77 | 53.23 | 54.42 | 50.62 | e | 44.48 | g | 34.37 | a | 18.46 | b | 11.03 | 29.79 | a | ||||||||
1932 | -1.90 | a | 0.86 | 7.29 | 29.83 | a | 39.81 | 53.69 | a | 53.48 | 52.00 | 39.43 | 26.37 | a | 13.90 | 2.00 | c | 26.40 | ||||||||
1933 | 0.94 | -3.89 | a | 16.03 | 26.37 | 41.43 | a | 56.67 | 54.71 | 51.07 | b | 44.70 | 24.90 | ----- | z | -6.12 | e | 27.89 | a | |||||||
1934 | 1.97 | a | 7.68 | 10.39 | 27.07 | 44.42 | 50.80 | 55.32 | 51.77 | 37.69 | a | 35.32 | 22.27 | 1.16 | 28.82 | |||||||||||
1935 | -7.42 | 13.38 | b | 12.77 | 27.70 | 37.77 | 48.87 | 61.33 | a | 51.97 | a | 44.75 | f | 27.21 | b | 3.07 | b | -1.43 | a | 25.02 | a | |||||
1936 | -19.27 | a | -25.69 | c | 14.60 | f | 22.52 | a | 42.57 | c | 56.90 | 60.62 | b | 52.78 | d | 43.60 | 23.20 | a | 13.86 | a | 2.75 | g | 27.11 | b | ||
1937 | -17.90 | -5.50 | 13.71 | c | 30.79 | a | 44.48 | 50.69 | a | 56.97 | 54.50 | c | 40.07 | b | 29.81 | 11.31 | a | -1.04 | g | 28.08 | a | |||||
1938 | -0.41 | d | -6.74 | a | 23.72 | b | 28.60 | e | 39.85 | d | 50.73 | 56.59 | b | 54.90 | 45.71 | b | 36.77 | e | 12.59 | a | 5.97 | b | 29.02 | |||
1939 | 0.69 | e | -17.96 | a | 8.28 | f | 27.53 | 45.61 | 49.00 | 57.41 | b | 53.33 | a | 39.17 | 29.37 | a | 22.36 | b | 15.77 | 29.30 | a | |||||
1940 | -4.77 | 7.68 | a | 13.29 | 26.25 | b | 40.16 | 48.35 | d | 56.90 | 53.84 | 43.70 | c | 37.42 | 14.53 | 7.94 | 28.77 | |||||||||
1941 | -0.52 | b | 0.64 | 14.90 | 33.61 | b | 45.32 | 53.14 | a | 57.37 | a | 54.20 | a | 45.11 | b | 33.39 | 19.03 | 10.72 | b | 30.58 | ||||||
1942 | 4.71 | 2.42 | b | 19.48 | 30.17 | 36.29 | 48.03 | 52.97 | 51.74 | 36.30 | 31.45 | 16.43 | -3.16 | 27.24 | ||||||||||||
1943 | -12.89 | d | 2.59 | a | ----- | z | 26.90 | a | 38.16 | 49.37 | 57.45 | 52.23 | ----- | z | 30.42 | 18.67 | 8.16 | 27.11 | b | |||||||
1944 | 8.23 | a | -4.38 | 4.00 | a | 24.40 | 42.76 | b | 49.55 | a | 52.03 | 50.57 | c | 44.26 | c | 34.39 | 20.60 | e | 5.52 | b | 27.66 | |||||
1945 | 0.48 | -1.00 | a | 19.45 | 22.43 | b | 29.68 | 42.31 | a | 51.13 | a | 51.58 | 38.41 | a | 27.97 | a | 11.60 | -4.86 | c | 24.10 | ||||||
1946 | -3.86 | b | -5.12 | b | 23.17 | a | 33.03 | 37.74 | 48.37 | 56.74 | 50.45 | 43.30 | 32.52 | 13.28 | a | 1.97 | a | 27.63 | ||||||||
1947 | 3.10 | -3.79 | 12.03 | 28.10 | 35.35 | 49.50 | 57.10 | 56.39 | 40.00 | a | 37.76 | b | 13.93 | b | -1.77 | a | 27.31 | |||||||||
1948 | -2.67 | a | -6.46 | c | 1.10 | a | 27.03 | 38.55 | 47.43 | 57.00 | a | 51.87 | 45.04 | e | 32.76 | b | 19.13 | 0.08 | f | 28.25 | a | |||||
1949 | -10.34 | b | -12.69 | b | 9.10 | 32.97 | 40.35 | 49.97 | 54.37 | a | 50.84 | 34.93 | a | 27.96 | e | 20.07 | b | -1.50 | a | 24.67 | ||||||
1950 | -21.10 | a | -8.75 | 9.00 | d | 20.32 | e | 38.00 | b | 49.17 | 54.13 | 49.42 | 44.63 | 32.55 | 9.97 | -3.43 | a | 22.83 | ||||||||
1951 | -8.39 | -0.93 | -0.10 | 26.80 | 41.29 | 46.17 | 52.00 | 48.42 | 40.33 | 28.73 | a | 7.79 | b | -5.16 | 23.08 | |||||||||||
1952 | -10.90 | 6.07 | 8.35 | 33.70 | 40.16 | 50.04 | c | 53.04 | c | 50.24 | b | 42.93 | 25.29 | 16.57 | b | 4.52 | 26.67 | |||||||||
1953 | -0.16 | 4.50 | 10.61 | 21.80 | 38.94 | 49.17 | a | 52.36 | c | 55.53 | a | 42.57 | 35.65 | 22.28 | a | 7.00 | 28.35 | |||||||||
1954 | -14.24 | b | 18.50 | h | 9.92 | e | ----- | z | 35.96 | g | 50.13 | 55.30 | a | 53.23 | 41.29 | b | ----- | z | 19.68 | b | ----- | z | 30.76 | e | ||
1955 | ----- | z | ----- | z | 5.19 | d | 36.15 | j | 43.69 | b | 50.90 | 58.61 | 54.81 | 39.63 | 31.58 | 4.72 | a | -7.10 | 31.34 | c | ||||||
1956 | -4.58 | -4.24 | 8.87 | 24.00 | 40.29 | 54.70 | 53.81 | 51.29 | 38.30 | 31.65 | 17.67 | ----- | z | 28.34 | a | |||||||||||
1957 | -9.42 | -1.36 | 13.29 | 27.37 | 40.10 | 47.73 | 59.06 | 53.81 | 40.67 | 32.97 | 19.43 | 10.94 | 27.88 | |||||||||||||
1958 | 5.30 | a | -1.11 | 17.52 | 30.10 | 40.48 | 45.73 | 52.10 | 51.68 | 40.20 | 30.68 | 15.93 | -0.53 | a | 27.34 | |||||||||||
1959 | -7.87 | -6.93 | 20.48 | 27.20 | 37.90 | a | 52.43 | 54.16 | 51.63 | a | 39.93 | 26.55 | 8.87 | 14.39 | 26.56 | |||||||||||
1960 | -4.58 | -1.72 | 2.77 | 28.73 | 38.48 | 47.40 | 54.19 | 52.32 | 42.07 | 29.94 | 16.70 | -0.65 | 25.47 | |||||||||||||
1961 | -0.97 | 4.68 | 21.00 | 24.47 | 36.26 | 51.80 | 54.77 | 53.97 | 41.00 | 31.90 | a | 16.43 | -3.97 | 27.61 | ||||||||||||
1962 | -4.58 | -2.46 | 10.42 | 27.67 | 41.23 | 51.73 | 53.39 | 53.68 | 38.77 | 33.77 | 22.77 | 5.06 | 27.62 | |||||||||||||
1963 | -9.61 | -2.18 | 14.65 | 28.93 | 38.32 | 54.80 | 57.55 | 54.00 | 44.87 | 40.61 | 19.93 | -1.81 | 28.34 | |||||||||||||
1964 | 4.68 | 3.97 | 3.74 | 30.37 | 41.74 | 50.43 | 57.70 | a | 49.52 | 38.87 | 31.52 | 16.80 | -6.29 | 26.92 | ||||||||||||
1965 | -10.35 | -4.04 | 3.39 | 30.33 | 39.35 | 50.33 | 56.06 | 52.16 | 35.20 | 33.55 | 15.87 | 11.65 | 26.13 | |||||||||||||
1966 | -16.68 | -4.36 | 19.13 | 26.30 | 37.58 | 51.83 | 60.52 | 50.90 | 42.47 | 31.39 | 10.03 | 1.42 | 25.88 | |||||||||||||
1967 | 0.45 | -7.56 | a | 13.13 | 25.20 | 34.39 | 48.37 | 51.65 | 50.45 | 44.07 | 32.13 | 18.23 | 4.74 | 26.27 | ||||||||||||
1968 | -5.42 | -1.72 | 19.42 | 28.67 | 37.00 | 49.90 | 53.00 | 50.48 | 44.23 | 32.52 | 19.97 | 0.39 | 27.37 | |||||||||||||
1969 | -11.10 | 2.36 | 4.13 | 29.57 | 40.16 | 45.13 | 55.00 | 55.65 | 44.20 | 29.61 | 20.37 | 7.77 | 26.90 | |||||||||||||
1970 | -7.61 | -0.89 | 6.29 | 28.97 | 39.32 | 54.60 | 56.13 | 52.81 | 43.83 | 32.39 | 17.63 | -2.94 | 26.71 | |||||||||||||
1971 | -9.19 | -0.04 | 12.81 | 28.93 | 38.35 | 53.67 | 51.32 | 53.16 | 43.20 | 35.81 | 18.93 | -1.42 | 27.13 | |||||||||||||
1972 | -8.29 | -3.97 | 13.10 | 28.90 | 43.97 | 50.03 | 51.74 | 55.16 | 41.03 | 28.55 | 19.27 | -3.16 | 26.36 | |||||||||||||
1973 | 5.87 | 7.14 | 27.29 | 27.30 | 39.52 | 50.47 | 54.32 | 56.32 | 43.60 | 37.13 | 13.33 | 2.19 | 30.37 | |||||||||||||
1974 | -7.77 | 0.46 | 11.71 | 29.80 | 39.13 | 49.87 | 59.55 | 49.61 | 38.43 | 33.23 | 19.90 | 10.06 | 27.83 | |||||||||||||
1975 | 0.68 | -0.46 | 9.94 | 25.13 | 41.71 | 51.63 | 60.26 | 53.16 | 42.03 | a | 34.87 | 21.33 | 4.48 | 28.73 | ||||||||||||
1976 | -1.19 | 10.52 | 8.65 | 31.80 | 39.16 | 53.23 | 54.13 | 55.16 | 42.93 | 26.00 | 11.70 | -2.26 | 27.49 | |||||||||||||
1977 | -12.65 | 9.43 | 21.13 | 33.00 | 49.20 | a | 53.07 | 55.97 | 48.74 | 46.13 | 34.77 | 16.66 | a | -1.16 | 29.52 | |||||||||||
1978 | -12.42 | -5.64 | 14.16 | 30.77 | 44.61 | 49.87 | 56.26 | 52.61 | 49.23 | 33.48 | 10.77 | -3.19 | 26.71 | |||||||||||||
1979 | -15.00 | -12.86 | 7.65 | 23.03 | 36.23 | 50.83 | 59.39 | 52.52 | 44.93 | 30.74 | 15.57 | 11.10 | 25.34 | |||||||||||||
1980 | -4.55 | 1.62 | 8.93 | a | 33.07 | a | 44.27 | a | 52.10 | 56.87 | 52.48 | 43.50 | 32.87 | 24.43 | 5.10 | 29.22 | ||||||||||
1981 | 3.97 | 9.93 | 22.87 | 30.83 | 41.03 | 50.20 | 57.77 | 57.06 | 44.73 | 33.48 | 25.53 | 2.55 | 31.66 | |||||||||||||
1982 | -18.23 | -1.04 | a | 14.06 | 26.77 | 43.84 | 47.77 | 58.00 | a | 53.53 | a | 43.00 | 34.00 | d | 13.86 | a | 13.70 | d | 27.44 | |||||||
1983 | 11.61 | c | 13.30 | e | 20.94 | 28.83 | a | 37.47 | a | 52.07 | a | 61.17 | a | 60.55 | 45.21 | b | 34.77 | a | 24.20 | -10.73 | a | 31.61 | ||||
1984 | 2.19 | d | 18.68 | a | 10.50 | e | 33.23 | 39.90 | 52.75 | b | 57.30 | a | 57.97 | 39.93 | 34.52 | 17.63 | -0.97 | b | 30.30 | |||||||
1985 | -7.50 | c | -0.29 | 22.97 | 31.47 | 45.94 | 47.00 | a | 54.68 | 51.58 | 41.60 | 31.77 | 5.00 | a | -3.00 | b | 26.77 | |||||||||
1986 | 7.45 | 0.30 | a | 23.55 | b | 31.54 | b | 44.47 | a | 53.43 | 57.61 | 51.90 | 44.83 | 33.04 | d | 9.96 | c | 11.35 | 30.79 | |||||||
1987 | 10.26 | 18.52 | a | 20.00 | 36.60 | 47.45 | b | 53.62 | a | 59.78 | d | 52.71 | c | 46.37 | c | 27.96 | g | 23.07 | c | 14.87 | 34.84 | a | ||||
1988 | -4.33 | a | -1.22 | b | 19.76 | b | 29.56 | c | 47.17 | a | 57.85 | d | 57.85 | e | 55.73 | a | 44.33 | c | 25.15 | e | 16.20 | 4.45 | 29.37 | |||
1989 | 0.63 | a | -8.86 | 4.12 | o | 29.72 | a | 42.55 | b | 48.64 | b | 60.57 | a | 55.32 | c | 43.07 | a | 30.16 | 14.97 | a | -6.10 | 28.24 | a | |||
1990 | 11.29 | c | 3.82 | 19.29 | c | 28.37 | 41.17 | b | 51.79 | b | 55.65 | 54.43 | a | 45.00 | c | 28.61 | c | 14.70 | -2.55 | 29.30 | ||||||
1991 | -3.65 | 12.71 | 18.00 | 31.07 | a | 46.87 | 56.20 | 56.16 | 56.61 | 42.63 | 26.68 | 12.17 | 9.45 | 30.41 | ||||||||||||
1992 | 9.39 | 14.70 | b | 21.17 | a | 28.77 | 42.53 | a | 49.13 | 50.90 | a | 48.94 | 40.80 | 28.90 | 20.24 | a | -2.07 | a | 29.45 | |||||||
1993 | -4.37 | a | -0.96 | b | 14.68 | 28.47 | 41.58 | 49.47 | 53.71 | 53.39 | 39.37 | 27.13 | a | 15.80 | 6.39 | 27.05 | ||||||||||
1994 | -12.61 | -7.00 | 22.37 | a | 28.17 | 44.68 | 54.43 | 54.10 | a | 50.90 | 46.38 | a | 36.23 | 20.34 | a | 8.23 | 28.85 | |||||||||
1995 | 0.27 | a | 3.29 | 17.64 | c | 26.77 | 41.35 | 55.57 | 57.10 | b | 56.29 | 41.62 | a | 32.00 | 10.37 | 4.35 | 28.88 | |||||||||
1996 | -10.06 | 3.62 | 7.81 | 24.87 | 39.68 | 53.48 | a | 54.65 | 54.81 | 43.50 | 29.87 | 5.40 | -4.00 | 25.30 | ||||||||||||
1997 | -9.27 | a | 4.30 | a | 11.58 | 23.03 | 37.93 | a | 54.83 | 58.32 | 54.35 | 44.43 | 32.19 | 16.10 | 16.77 | 28.72 | ||||||||||
1998 | 2.58 | 20.46 | 13.35 | 35.20 | 45.32 | 50.40 | 57.48 | 57.71 | 46.73 | 35.13 | 21.00 | 8.61 | 32.83 | |||||||||||||
1999 | -2.29 | 10.39 | 19.57 | a | 31.77 | 44.71 | 52.87 | 58.52 | 54.97 | 42.53 | 30.29 | 23.80 | 12.40 | a | 31.63 | |||||||||||
2000 | 0.94 | 11.14 | 23.83 | a | 28.40 | 42.74 | 49.80 | 58.65 | 55.26 | 44.13 | 34.35 | 14.50 | -8.19 | 29.63 | ||||||||||||
2001 | 7.10 | -4.57 | 15.57 | a | 30.57 | 43.81 | 52.87 | 58.94 | 56.97 | 44.86 | a | 31.57 | a | 26.80 | 10.19 | 31.22 | ||||||||||
2002 | 8.10 | a | 12.61 | 4.13 | 25.57 | 34.03 | 54.40 | 59.39 | 53.23 | 47.07 | 26.07 | a | 18.53 | 11.16 | 29.52 | |||||||||||
2003 | -2.23 | -5.64 | 10.45 | 30.60 | 41.52 | 52.03 | 57.83 | a | 57.87 | a | 44.03 | 34.42 | 11.60 | 12.65 | 28.76 | |||||||||||
2004 | -7.52 | 3.50 | a | 17.97 | 28.50 | 34.00 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 10.61 | h | |||
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -3.64 | 1.11 | 13.81 | 28.58 | 40.72 | 51.03 | 56.08 | 53.18 | 42.37 | 31.65 | 16.34 | 3.36 | 27.99 | |||||||||||||
S.D. | 7.89 | 8.48 | 6.40 | 3.24 | 3.54 | 2.89 | 2.67 | 2.46 | 2.91 | 3.46 | 5.05 | 6.78 | 2.06 | |||||||||||||
SKEW | -0.01 | -0.04 | -0.11 | -0.15 | -0.12 | -0.09 | -0.04 | 0.38 | -0.42 | -0.20 | -0.44 | 0.09 | -0.10 | |||||||||||||
MAX | 11.61 | 20.46 | 27.29 | 36.60 | 49.20 | 57.85 | 61.33 | 60.55 | 49.23 | 40.61 | 26.80 | 16.77 | 32.83 | |||||||||||||
MIN | -21.10 | -25.69 | -0.10 | 20.32 | 29.68 | 42.31 | 50.90 | 48.42 | 34.93 | 23.20 | 3.07 | -10.73 | 22.83 | |||||||||||||
YRS | 74 | 73 | 71 | 73 | 73 | 74 | 74 | 75 | 72 | 73 | 74 | 70 | 61 |