YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.07 | h | 50.60 | d | 45.05 | a | 23.79 | b | 12.36 | c | 32.95 | h |
1930 | -2.57 | c | 20.02 | a | 25.74 | 45.45 | 49.69 | 63.00 | 71.23 | 68.66 | b | 56.23 | d | 40.10 | 27.21 | a | 19.96 | c | 40.39 | |||||||
1931 | 20.29 | 25.23 | 23.90 | 42.15 | 50.47 | 66.62 | 68.21 | 63.75 | e | 60.34 | h | 47.32 | a | 29.41 | c | 19.57 | a | 41.54 | a | |||||||
1932 | 8.22 | a | 12.10 | 16.87 | 41.14 | a | 52.98 | 65.66 | a | 68.65 | 67.84 | 56.95 | 37.83 | a | 24.03 | a | 12.98 | g | 41.12 | a | ||||||
1933 | 12.27 | g | 9.20 | c | 27.42 | 37.67 | a | 53.21 | b | 70.62 | 70.69 | 68.20 | c | 62.71 | a | 40.50 | a | ----- | z | 7.87 | h | 48.91 | c | |||
1934 | 15.81 | b | 18.63 | a | 23.85 | d | 40.57 | 61.74 | 63.67 | 70.65 | 66.53 | 50.90 | a | 46.87 | a | 32.40 | 11.31 | 41.91 | ||||||||
1935 | 6.22 | f | 24.41 | f | 23.32 | a | 37.60 | a | 48.21 | 60.18 | 73.83 | b | 65.73 | a | 59.73 | f | 42.16 | b | 15.16 | b | 8.43 | b | 41.62 | c | ||
1936 | -10.63 | a | -15.25 | c | 25.17 | g | 34.76 | a | 58.46 | c | 68.73 | 78.02 | c | 66.11 | d | 57.15 | 38.08 | a | 25.16 | b | 13.50 | h | 40.06 | b | ||
1937 | -5.97 | 7.80 | 24.57 | c | 40.25 | b | 57.27 | 63.59 | a | 71.52 | 71.83 | d | 56.04 | b | 42.26 | 23.94 | e | 10.18 | n | 41.19 | a | |||||
1938 | 11.67 | h | 7.10 | c | 35.00 | b | 42.73 | f | 50.81 | d | 63.75 | 69.52 | b | 70.73 | 60.61 | b | 50.62 | e | 22.10 | a | 17.62 | e | 44.78 | b | ||
1939 | 11.26 | f | -6.02 | c | 21.25 | g | 40.17 | 60.02 | 60.40 | 72.19 | b | 69.48 | a | 56.65 | 40.73 | a | 36.95 | b | 27.82 | a | 45.84 | b | ||||
1940 | 4.21 | 15.05 | a | 22.08 | a | 36.13 | c | 52.94 | 62.27 | d | 71.63 | a | 67.61 | 60.06 | e | 50.50 | 22.62 | 19.17 | b | 40.36 | ||||||
1941 | 9.67 | b | 10.50 | 24.55 | 43.34 | b | 56.53 | 63.47 | a | 70.88 | a | 67.48 | a | 56.20 | c | 45.43 | b | 29.16 | a | 20.54 | c | 41.48 | ||||
1942 | 19.43 | c | 13.00 | c | 29.03 | 41.95 | 47.65 | 58.62 | 65.73 | 64.87 | 50.32 | 45.85 | 27.75 | 7.68 | 39.32 | |||||||||||
1943 | -1.00 | g | 13.39 | a | ----- | z | 41.66 | a | 50.61 | c | 60.93 | b | 70.98 | 68.34 | ----- | z | 47.00 | a | 26.52 | 20.40 | f | 47.43 | d | |||
1944 | 21.14 | c | 9.65 | c | 14.90 | f | 38.40 | 57.32 | c | 63.95 | b | 68.71 | 65.32 | c | 55.98 | c | 50.08 | a | 26.43 | h | 15.08 | e | 44.56 | b | ||
1945 | 10.86 | c | 12.26 | g | 34.02 | d | 36.52 | e | 44.27 | a | 57.02 | c | 65.80 | a | 65.95 | a | 52.64 | a | 44.19 | b | 21.26 | i | 4.15 | g | 45.70 | c |
1946 | 7.72 | f | 7.60 | g | 34.62 | b | 47.57 | 51.47 | b | 64.42 | 72.27 | 66.37 | 57.02 | a | 43.37 | a | 25.43 | b | 12.21 | b | 47.47 | b | ||||
1947 | 15.87 | e | 7.83 | e | 22.07 | b | 39.40 | a | 49.12 | a | 59.73 | 70.55 | 71.00 | a | 53.89 | c | 52.87 | d | 23.27 | d | 12.07 | d | 39.80 | |||
1948 | 8.96 | d | 2.80 | g | 14.60 | e | 37.35 | 53.40 | 60.72 | 69.38 | a | 66.95 | 62.40 | j | 46.59 | c | 28.43 | 10.35 | g | 42.93 | c | |||||
1949 | 0.12 | b | -2.06 | b | 18.45 | 46.17 | 55.11 | 62.57 | 67.38 | a | 68.89 | d | 52.19 | a | 42.85 | k | 33.12 | b | 7.37 | a | 37.21 | a | ||||
1950 | -12.08 | m | 4.48 | b | 19.54 | e | 29.56 | e | 47.91 | c | 62.58 | 66.00 | 63.24 | 57.98 | 44.74 | 22.05 | a | 6.68 | a | 38.62 | a | |||||
1951 | 2.26 | 12.69 | d | 10.71 | 37.22 | 56.52 | 57.60 | 66.61 | 62.52 | 51.55 | a | 40.45 | b | 18.76 | c | 4.77 | 35.14 | |||||||||
1952 | 0.98 | c | 15.84 | 16.90 | 47.22 | 54.61 | 62.81 | c | 67.52 | f | 66.09 | b | 59.10 | 40.90 | 30.35 | d | 15.90 | b | 37.34 | a | ||||||
1953 | 11.10 | a | 15.65 | a | 22.27 | 34.02 | 50.11 | 61.02 | a | 65.89 | d | 69.65 | a | 57.56 | c | 51.24 | 33.43 | a | 17.77 | 40.81 | ||||||
1954 | -3.21 | c | 27.52 | h | 21.28 | f | ----- | z | 49.41 | h | 60.72 | 68.40 | b | 65.60 | 53.45 | b | ----- | z | 32.16 | b | ----- | z | 46.18 | f | ||
1955 | ----- | z | ----- | z | 19.65 | g | 46.88 | n | 57.22 | b | 62.15 | 70.47 | 69.06 | 54.10 | 46.84 | 14.78 | a | 2.07 | a | 47.09 | d | |||||
1956 | 5.08 | 6.03 | 18.06 | 32.93 | 51.79 | 67.00 | 65.03 | 65.27 | 51.70 | 47.11 | 26.60 | a | ----- | z | 39.69 | a | ||||||||||
1957 | 0.77 | 9.77 | 24.10 | 38.48 | 53.35 | 59.90 | 71.97 | 65.35 | 52.73 | 42.89 | 27.62 | 20.90 | 38.99 | |||||||||||||
1958 | 15.71 | b | 8.79 | 25.52 | 42.62 | a | 54.94 | 57.55 | 63.94 | 66.47 | 56.12 | b | 45.24 | 26.70 | 9.90 | a | 39.46 | |||||||||
1959 | 1.82 | 3.61 | a | 30.74 | 40.58 | 51.02 | a | 65.77 | 69.00 | 68.62 | a | 54.13 | 36.65 | 18.84 | a | 22.71 | 38.62 | |||||||||
1960 | 5.90 | 8.71 | 13.92 | 39.07 | 52.89 | 60.37 | 69.18 | 67.32 | 57.52 | 44.90 | 28.02 | 10.77 | a | 38.21 | ||||||||||||
1961 | 9.47 | 15.41 | 30.90 | 35.47 | 50.13 | 67.73 | 67.69 | 70.74 | 53.38 | 44.95 | a | 27.97 | 6.68 | a | 40.04 | |||||||||||
1962 | 6.37 | 6.77 | 19.58 | 39.02 | 51.71 | 62.40 | 65.00 | 67.37 | 53.07 | 46.98 | 33.02 | 16.03 | 38.94 | |||||||||||||
1963 | 0.97 | 9.96 | 28.95 | 40.82 | 51.06 | 66.55 | 70.79 | 68.39 | 59.72 | 55.84 | 32.77 | 7.48 | 41.11 | |||||||||||||
1964 | 15.23 | 17.07 | 17.37 | 42.23 | 55.47 | 61.33 | 70.28 | a | 62.47 | 52.35 | 44.71 | 26.60 | 1.94 | 38.92 | ||||||||||||
1965 | 0.19 | 7.55 | 13.77 | 38.62 | 51.26 | 61.97 | 67.02 | 64.97 | 45.25 | 46.81 | 26.32 | 20.68 | 37.03 | |||||||||||||
1966 | -6.82 | 6.50 | a | 28.55 | 35.08 | 50.26 | 63.37 | 71.77 | 63.42 | 57.27 | 44.45 | 20.28 | 11.68 | 37.15 | ||||||||||||
1967 | 9.52 | 5.10 | c | 23.77 | 35.47 | 47.42 | 60.82 | 66.65 | 65.73 | 58.17 | 42.92 | 27.70 | 14.37 | 38.14 | ||||||||||||
1968 | 4.79 | 9.12 | 31.93 | a | 40.17 | 49.42 | 60.40 | 65.58 | 63.11 | 55.68 | 44.11 | 29.15 | 8.53 | 38.50 | ||||||||||||
1969 | -2.77 | 11.80 | a | 14.42 | 41.45 | 53.50 | 56.05 | 66.18 | 70.21 | 57.67 | 38.71 | 29.77 | 16.65 | 37.80 | ||||||||||||
1970 | 0.90 | 11.64 | 16.68 | 37.22 | 50.44 | 66.58 | 69.53 | 67.21 | 56.53 | 43.74 | 25.53 | 7.65 | 37.80 | |||||||||||||
1971 | -0.24 | 10.23 | 22.47 | 40.92 | 51.21 | 64.30 | 63.60 | 68.08 | 55.82 | 45.26 | 26.40 | 8.35 | 38.03 | |||||||||||||
1972 | 2.31 | 5.64 | 22.26 | 37.83 | 56.63 | 63.07 | 64.37 | 68.23 | 52.92 | 39.98 | 25.53 | 6.10 | 37.07 | |||||||||||||
1973 | 14.44 | 17.14 | 34.77 | 39.47 | 53.34 | 63.27 | 67.40 | 69.95 | 54.82 | 48.44 | 22.07 | 9.31 | 41.20 | |||||||||||||
1974 | 2.34 | 10.75 | 20.47 | 39.43 | 49.06 | 62.62 | 72.02 | 62.18 | 52.27 | 46.13 | 28.03 | 18.79 | 38.67 | |||||||||||||
1975 | 11.06 | 8.93 | 20.02 | 31.75 | 53.03 | 62.07 | 71.76 | 64.82 | 54.21 | a | 46.05 | 31.45 | 14.71 | 39.15 | ||||||||||||
1976 | 8.60 | 21.09 | 20.13 | 44.23 | 54.08 | 65.55 | 68.34 | 70.05 | 58.35 | 39.21 | 23.42 | 9.47 | 40.21 | |||||||||||||
1977 | -3.65 | 19.09 | 31.18 | 47.37 | 62.75 | a | 65.03 | 68.39 | 60.48 | 55.22 | 46.03 | 26.09 | a | 6.05 | 40.34 | |||||||||||
1978 | -4.26 | 3.84 | 23.26 | 40.50 | 57.42 | 62.23 | 68.39 | 66.60 | 61.38 | 45.65 | 21.60 | 6.58 | 37.77 | |||||||||||||
1979 | -6.21 | -2.84 | 17.61 | 30.80 | 46.89 | 61.95 | 69.69 | 63.76 | 58.65 | 42.89 | 24.98 | 21.56 | 35.81 | |||||||||||||
1980 | 5.58 | 10.47 | 19.13 | a | 47.90 | a | 59.97 | a | 63.30 | 69.44 | 62.77 | 54.57 | 42.47 | 32.85 | 14.44 | 40.24 | ||||||||||
1981 | 13.61 | 18.48 | 32.56 | 44.12 | 53.02 | 60.85 | 68.85 | 68.71 | 56.50 | 43.29 | 35.58 | 11.16 | 42.23 | |||||||||||||
1982 | -8.35 | 8.33 | a | 21.87 | 38.33 | 54.27 | 58.58 | 68.85 | a | 65.52 | a | 56.07 | 42.85 | d | 22.12 | a | 20.98 | d | 37.45 | |||||||
1983 | 19.95 | c | 20.64 | f | 26.17 | a | 38.36 | a | 50.33 | a | 63.17 | a | 72.52 | a | 73.35 | 56.07 | b | 43.95 | a | 29.87 | -2.31 | b | 42.86 | a | ||
1984 | 11.56 | d | 25.86 | a | 18.36 | f | 43.40 | a | 51.92 | 63.44 | c | 69.93 | a | 71.23 | 51.48 | 44.02 | 26.37 | 8.00 | c | 42.47 | a | |||||
1985 | 3.68 | c | 9.00 | 32.93 | a | 44.85 | 58.68 | 57.71 | a | 68.05 | 62.44 | 51.15 | 42.65 | 14.34 | b | 6.62 | b | 37.67 | ||||||||
1986 | 15.62 | a | 8.54 | c | 33.55 | c | 40.41 | b | 56.50 | a | 65.02 | 68.63 | 63.97 | 53.83 | 44.29 | e | 20.62 | e | 19.37 | a | 40.86 | |||||
1987 | 18.41 | b | 25.75 | d | 26.83 | a | 50.21 | a | 58.90 | b | 67.00 | a | 70.28 | d | 64.46 | c | 58.52 | c | 40.81 | g | 32.65 | c | 22.39 | 45.04 | a | |
1988 | 8.17 | d | 9.46 | b | 29.02 | b | 44.02 | c | 61.05 | a | 71.85 | d | 73.25 | e | 68.40 | a | 55.41 | c | 40.08 | f | 24.57 | a | 15.37 | a | 41.87 | a |
1989 | 12.65 | a | 1.70 | 15.62 | r | 42.07 | a | 57.43 | b | 62.50 | b | 74.43 | a | 68.48 | d | 58.34 | a | 43.63 | a | 25.60 | a | 5.79 | 41.15 | a | ||
1990 | 22.00 | c | 16.57 | 31.04 | d | 42.27 | 55.16 | b | 63.18 | b | 67.37 | 68.97 | b | 59.43 | c | 42.41 | c | 27.31 | a | 7.84 | 41.96 | |||||
1991 | 6.32 | 23.57 | 29.50 | 44.72 | a | 57.37 | 66.15 | 67.77 | 69.79 | 55.07 | 37.92 | 20.35 | 18.21 | 41.40 | ||||||||||||
1992 | 19.06 | 22.48 | b | 30.70 | a | 39.17 | 56.25 | a | 60.90 | 62.13 | a | 62.24 | 54.05 | 42.10 | 24.62 | a | 5.50 | a | 39.93 | |||||||
1993 | 5.34 | b | 7.42 | b | 23.77 | 39.50 | 53.53 | 59.28 | 62.63 | 64.35 | 51.62 | 40.40 | a | 23.82 | 14.29 | 37.16 | ||||||||||
1994 | -4.48 | 1.75 | 30.62 | a | 39.87 | 57.50 | 64.58 | 64.52 | a | 63.56 | 58.64 | a | 45.47 | 28.66 | a | 15.82 | 38.87 | |||||||||
1995 | 7.35 | a | 11.75 | 24.32 | c | 35.57 | 51.81 | 66.05 | 67.34 | b | 68.34 | 54.53 | a | 41.27 | 19.15 | 10.11 | 38.13 | |||||||||
1996 | -1.55 | 12.16 | 16.13 | 33.65 | 50.39 | 64.57 | a | 65.23 | 67.34 | 54.78 | 41.26 | 13.08 | 3.32 | 35.03 | ||||||||||||
1997 | -0.73 | a | 14.22 | a | 20.13 | 32.85 | 50.38 | a | 66.52 | 68.23 | 66.56 | 58.27 | 43.44 | 22.75 | 23.65 | a | 38.86 | |||||||||
1998 | 9.29 | 25.77 | 21.47 | 46.90 | 56.87 | 59.63 | 69.60 | 69.95 | 60.53 | 44.42 | 27.08 | 15.79 | 42.28 | |||||||||||||
1999 | 5.74 | 19.93 | a | 28.10 | a | 41.30 | 54.24 | 63.07 | 69.19 | 66.24 | 52.47 | 42.16 | 35.65 | 22.30 | a | 41.70 | ||||||||||
2000 | 10.39 | 21.16 | 33.92 | a | 39.87 | 54.84 | 60.63 | 68.89 | 66.61 | 55.73 | 45.27 | 21.33 | 0.37 | 39.92 | ||||||||||||
2001 | 16.47 | a | 4.61 | 24.02 | a | 40.33 | 55.31 | 62.92 | 69.50 | 69.63 | 56.76 | a | 42.20 | a | 36.75 | 17.97 | a | 41.37 | ||||||||
2002 | 16.33 | a | 22.68 | 14.76 | 35.67 | 46.58 | 65.82 | 70.34 | 65.26 | 59.13 | 34.35 | a | 27.88 | 19.03 | 39.82 | |||||||||||
2003 | 7.47 | 5.20 | 19.95 | 42.30 | 52.06 | 61.93 | 68.12 | a | 70.35 | a | 55.95 | 47.24 | 20.30 | 20.30 | a | 39.26 | ||||||||||
2004 | 1.42 | a | 12.32 | a | 27.23 | 41.08 | 46.19 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.51 | 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 | 6.56 | 11.26 | 24.14 | 39.95 | 53.44 | 62.88 | 68.82 | 66.85 | 55.54 | 44.06 | 26.08 | 12.90 | 39.25 | |||||||||||||
S.D. | 8.08 | 7.74 | 6.16 | 4.22 | 3.86 | 3.04 | 2.85 | 2.71 | 3.09 | 3.72 | 5.21 | 6.59 | 1.79 | |||||||||||||
SKEW | 0.02 | -0.37 | 0.00 | -0.04 | 0.17 | 0.31 | 0.13 | -0.08 | -0.33 | 0.31 | -0.18 | -0.04 | -0.30 | |||||||||||||
MAX | 22.00 | 25.86 | 35.00 | 50.21 | 62.75 | 71.85 | 78.02 | 73.35 | 62.71 | 55.84 | 36.95 | 27.82 | 42.28 | |||||||||||||
MIN | -10.63 | -15.25 | 10.71 | 29.56 | 44.27 | 56.05 | 62.13 | 60.48 | 45.25 | 34.35 | 13.08 | -2.31 | 35.03 | |||||||||||||
YRS | 67 | 68 | 67 | 72 | 73 | 74 | 73 | 74 | 71 | 71 | 72 | 66 | 50 |