YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1921 | 10.52 | 14.52 | b | 21.11 | 39.15 | 54.16 | 66.90 | 70.02 | 65.53 | 56.62 | 46.39 | 18.55 | 15.21 | 39.89 | ||||||||||||
1922 | 4.08 | -0.34 | 25.65 | 41.85 | 56.85 | 63.75 | 65.69 | 69.94 | 59.33 | 44.68 | 31.72 | 6.08 | 39.11 | |||||||||||||
1923 | 5.76 | 2.02 | 12.32 | 37.37 | 54.48 | 67.05 | 71.76 | 62.00 | 58.27 | 42.77 | 35.65 | 20.68 | 39.18 | |||||||||||||
1924 | -0.58 | 16.41 | 24.23 | 37.12 | 45.60 | 59.07 | 66.21 | 63.35 | 54.30 | 50.39 | 23.82 | -0.73 | 36.60 | |||||||||||||
1925 | 6.42 | 12.18 | 24.90 | 46.58 | 52.61 | 60.85 | 65.81 | 67.74 | 56.15 | 32.42 | 26.75 | 13.82 | 38.85 | |||||||||||||
1926 | 14.15 | 19.16 | 21.68 | 40.33 | 57.26 | 58.60 | 68.05 | 64.03 | 50.50 | 40.35 | 18.75 | 6.84 | 38.31 | |||||||||||||
1927 | 6.48 | 10.07 | 28.97 | 39.95 | 47.15 | 61.57 | 64.65 | 62.81 | 56.37 | 45.79 | 17.65 | -1.32 | 36.68 | |||||||||||||
1928 | 11.03 | 16.88 | 22.73 | 33.83 | 56.92 | 57.55 | 66.06 | 63.79 | 52.85 | 41.35 | 29.97 | 19.08 | 39.34 | |||||||||||||
1929 | -7.10 | 1.45 | 28.56 | 39.82 | 47.26 | 60.67 | 68.53 | 67.15 | 51.18 | 44.56 | 20.75 | 7.66 | 35.87 | |||||||||||||
1930 | -5.24 | 17.09 | 23.40 | 46.20 | 49.94 | 63.27 | 71.06 | 69.53 | 55.53 | 39.68 | 27.32 | 17.55 | 39.61 | |||||||||||||
1931 | 16.66 | 25.54 | 23.92 | 42.32 | 51.34 | 66.77 | 69.40 | 66.15 | 60.38 | 47.02 | 29.92 | 20.02 | 43.28 | |||||||||||||
1932 | 7.45 | 10.59 | 16.15 | 41.85 | 54.56 | 67.58 | 68.50 | 67.58 | 56.22 | 36.73 | 23.63 | 10.98 | 38.49 | |||||||||||||
1933 | 9.53 | 5.80 | 25.79 | 38.48 | 55.06 | 70.13 | 70.82 | 68.23 | 60.67 | 38.24 | 24.32 | 3.79 | 39.24 | |||||||||||||
1934 | 11.43 | b | 14.29 | 22.97 | 40.98 | 61.31 | 62.93 | 70.48 | 66.10 | 50.97 | 47.06 | 31.98 | 9.85 | 40.86 | ||||||||||||
1935 | -2.26 | 21.25 | 22.68 | 37.72 | 49.52 | 59.72 | 73.35 | a | 64.08 | 55.37 | 41.74 | 14.12 | 8.32 | 37.13 | ||||||||||||
1936 | -10.48 | -14.97 | 22.61 | 33.92 | 60.27 | 63.92 | 79.03 | 68.53 | 58.35 | 39.58 | 25.67 | 12.40 | 36.57 | |||||||||||||
1937 | -9.85 | 4.59 | 21.84 | 38.27 | 55.47 | b | 62.88 | 70.52 | 72.06 | 56.50 | 42.56 | 22.27 | 7.73 | 37.07 | ||||||||||||
1938 | 4.61 | 5.29 | 33.00 | 41.43 | 50.52 | 62.90 | 68.90 | 69.10 | 60.52 | 49.44 | 21.13 | 15.19 | 40.17 | |||||||||||||
1939 | 9.44 | -4.46 | 20.45 | 39.35 | 59.15 | 60.17 | 72.61 | 69.06 | 57.28 | 39.84 | 33.75 | 24.47 | a | 40.09 | ||||||||||||
1940 | 1.61 | 12.50 | 16.63 | 36.12 | 52.97 | 61.43 | 70.23 | 66.40 | 61.48 | b | 49.10 | 21.20 | 16.19 | 38.82 | ||||||||||||
1941 | 7.35 | a | 6.70 | 20.11 | 43.05 | 56.79 | 64.37 | 70.66 | 66.81 | 54.58 | 43.95 | 27.90 | 19.65 | 40.16 | ||||||||||||
1942 | 16.08 | 11.64 | 28.97 | 42.75 | 48.94 | 60.07 | 65.85 | 65.21 | 52.70 | 46.26 | 26.27 | 5.95 | 39.22 | |||||||||||||
1943 | -4.85 | 11.44 | b | 16.00 | 43.03 | 49.08 | 59.47 | 70.97 | 66.98 | 55.12 | 47.98 | 26.92 | 18.85 | 38.42 | ||||||||||||
1944 | 18.81 | 9.24 | 15.21 | 40.32 | 58.02 | 61.78 | 67.45 | 65.53 | 55.92 | 48.32 | 26.85 | 13.45 | 40.07 | |||||||||||||
1945 | 9.34 | 12.17 | b | 33.03 | 36.55 | 45.94 | 57.90 | a | 67.10 | 66.52 | 53.25 | 43.76 | 19.37 | 3.21 | 37.34 | |||||||||||
1946 | 6.11 | 4.27 | 32.23 | 47.12 | 50.90 | 63.50 | 70.56 | 64.85 | 56.05 | 40.26 | 23.82 | 11.10 | 39.23 | |||||||||||||
1947 | 13.56 | 6.77 | 21.35 | 39.67 | 48.66 | 59.80 | 71.44 | 71.35 | 55.00 | 51.03 | 21.50 | 9.42 | 39.13 | |||||||||||||
1948 | 5.61 | 4.39 | a | 14.85 | 36.88 | 54.65 | 62.65 | 68.79 | 68.45 | 63.33 | 46.31 | 27.08 | 7.66 | 38.39 | ||||||||||||
1949 | 0.50 | -1.39 | 17.44 | 45.48 | 54.95 | 63.32 | 68.58 | 71.58 | a | 55.25 | 42.40 | 33.90 | 5.15 | 38.10 | ||||||||||||
1950 | -13.44 | 4.27 | 17.44 | 31.17 | 48.50 | 61.47 | 65.63 | 63.40 | 57.75 | 45.44 | 19.17 | 6.32 | 33.93 | |||||||||||||
1951 | -0.44 | 8.00 | 11.94 | 38.15 | 56.85 | 58.48 | 68.19 | 63.58 | 52.50 | 39.94 | 18.88 | 4.53 | 35.05 | |||||||||||||
1952 | 0.84 | 17.00 | 19.50 | 48.68 | 54.60 | a | 64.52 | 67.79 | 66.66 | 59.78 | 41.31 | 29.52 | 16.53 | 40.56 | ||||||||||||
1953 | 9.40 | 16.21 | 24.63 | 35.67 | 52.44 | 62.68 | 67.85 | 70.60 | 56.65 | 51.50 | 34.05 | 16.90 | a | 41.55 | ||||||||||||
1954 | -5.06 | 25.80 | 22.45 | 37.45 | 48.66 | 61.40 | 69.45 | 64.95 | 53.97 | 43.42 | 33.33 | 21.02 | 39.74 | |||||||||||||
1955 | 7.63 | 5.27 | 14.42 | 47.77 | 55.98 | 62.25 | 71.26 | 69.95 | 55.13 | 45.69 | 14.22 | 1.92 | 37.62 | |||||||||||||
1956 | 2.52 | 5.45 | a | 15.58 | 31.35 | 51.42 | a | 67.90 | 65.82 | 65.89 | 52.47 | 47.29 | 27.40 | 14.15 | 37.27 | |||||||||||
1957 | 0.76 | 9.23 | 24.48 | 39.67 | 54.16 | 59.78 | 72.97 | 65.94 | 53.55 | 43.65 | 26.88 | 18.68 | 39.15 | |||||||||||||
1958 | 14.71 | 8.27 | 27.63 | 42.92 | 55.97 | 58.35 | 65.35 | 67.10 | 56.78 | 46.10 | 25.92 | 8.06 | 39.76 | |||||||||||||
1959 | -1.10 | 5.36 | 29.95 | 40.40 | 50.06 | 65.47 | 69.89 | 69.35 | 54.53 | 36.44 | 17.92 | 22.21 | 38.37 | |||||||||||||
1960 | 3.58 | 8.09 | 13.61 | 38.67 | 54.24 | 61.60 | 70.73 | 68.27 | 58.67 | 45.18 | 26.97 | 9.89 | 38.29 | |||||||||||||
1961 | 7.10 | 15.45 | 29.77 | 35.67 | 51.63 | 68.53 | 68.50 | 72.55 | 52.67 | 45.32 | 27.13 | 4.71 | 39.92 | |||||||||||||
1962 | 3.10 | 2.96 | 19.10 | 38.88 | 51.08 | 64.02 | 65.37 | 67.69 | 54.00 | 47.58 | 31.88 | 14.18 | 38.32 | |||||||||||||
1963 | 0.35 | 8.96 | 29.26 | 40.73 | b | 50.59 | b | 66.20 | ----- | z | 68.45 | 60.13 | 54.82 | 30.37 | 5.84 | 37.79 | a | |||||||||
1964 | 11.97 | 15.62 | 15.87 | 42.32 | 55.58 | 61.18 | 70.61 | 62.60 | 52.65 | 45.87 | 27.00 | 1.69 | 38.58 | |||||||||||||
1965 | -1.03 | 8.95 | 15.02 | 40.37 | 53.18 | 62.38 | 67.11 | 65.69 | 46.62 | 47.56 | 24.27 | 19.53 | 37.47 | |||||||||||||
1966 | -8.18 | 5.52 | 28.68 | 35.97 | 51.03 | 64.03 | 71.37 | 65.00 | 58.48 | 45.10 | 20.17 | 10.69 | 37.32 | |||||||||||||
1967 | 8.73 | 3.54 | 24.34 | 36.78 | 49.60 | 62.65 | 68.79 | 67.58 | 60.45 | 43.10 | 28.20 | 13.73 | 38.96 | |||||||||||||
1968 | 5.23 | 8.88 | 31.79 | 42.32 | 50.79 | 62.08 | 67.89 | 64.18 | 57.25 | 44.71 | 30.10 | 7.58 | 39.40 | |||||||||||||
1969 | -3.74 | 11.16 | 14.98 | 43.70 | 55.19 | 57.32 | 68.15 | 72.48 | 58.95 | 39.68 | 30.08 | 16.23 | 38.68 | |||||||||||||
1970 | 0.68 | 10.64 | 16.32 | 37.82 | 51.63 | 68.55 | 70.76 | 68.56 | 58.15 | 44.73 | 25.75 | 7.50 | 38.42 | |||||||||||||
1971 | -3.03 | 11.59 | 22.27 | 42.20 | 54.16 | 65.03 | 64.97 | 68.81 | 56.37 | 45.27 | 25.77 | 9.50 | 38.58 | |||||||||||||
1972 | 0.77 | 4.03 | 22.10 | 38.50 | 58.63 | 65.73 | 65.29 | 69.26 | 53.52 | 40.11 | 24.18 | 4.34 | 37.21 | |||||||||||||
1973 | 13.89 | 16.27 | 34.84 | 39.88 | ----- | z | 64.58 | 67.92 | 70.89 | 55.22 | a | ----- | z | 20.90 | 8.23 | 39.26 | b | |||||||||
1974 | 0.32 | a | 8.02 | 17.44 | 40.26 | a | 49.68 | 65.47 | 73.10 | 63.81 | 53.43 | 46.65 | 27.26 | a | 19.23 | a | 38.72 | |||||||||
1975 | 8.92 | 8.25 | 17.78 | b | 34.12 | 54.84 | 63.72 | 73.52 | 65.65 | 54.38 | 46.10 | 33.80 | c | 12.82 | a | 39.49 | ||||||||||
1976 | 7.06 | 18.71 | 20.83 | a | 44.33 | 54.87 | 66.63 | c | 69.10 | 69.52 | b | 58.26 | a | 38.82 | 25.75 | b | 9.84 | 40.31 | ||||||||
1977 | -3.41 | b | 16.91 | a | 31.73 | 47.07 | 64.30 | a | 64.69 | a | 69.89 | 61.27 | ----- | z | ----- | z | ----- | z | ----- | z | 44.05 | d | ||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | 16.46 | d | 30.87 | c | 47.45 | 63.72 | 71.18 | 64.85 | d | ----- | z | 43.44 | d | 25.05 | 20.69 | e | 42.64 | c | ||||
1980 | 3.23 | e | 9.61 | a | 17.59 | c | 47.57 | a | 61.36 | b | 64.33 | a | 69.89 | 63.79 | c | 55.43 | ----- | z | 33.67 | a | 10.07 | i | 42.65 | b | ||
1981 | 12.17 | d | 18.98 | e | 31.90 | 43.90 | a | 53.18 | 60.82 | 68.39 | 68.87 | 56.60 | 43.62 | b | 35.52 | 10.34 | c | 42.02 | ||||||||
1982 | -11.71 | e | 7.50 | g | 21.39 | d | 37.80 | b | 54.47 | 59.09 | b | 69.44 | 65.24 | 55.77 | 44.16 | b | 22.85 | d | 19.28 | d | 39.80 | a | ||||
1983 | 15.78 | k | 19.79 | b | 25.41 | b | 37.23 | 49.55 | 63.40 | 72.50 | 73.10 | 55.34 | a | 43.05 | 28.09 | b | -2.83 | b | 42.24 | a | ||||||
1984 | 9.54 | f | 25.30 | b | 21.68 | 43.37 | 52.42 | 63.82 | 69.69 | 71.43 | a | 50.93 | 43.35 | 25.61 | b | 7.10 | f | 46.76 | b | |||||||
1985 | 8.21 | g | 6.72 | h | 31.34 | 44.82 | 58.48 | 58.07 | b | 68.37 | 62.85 | 52.27 | 43.88 | b | 15.50 | b | 6.52 | g | 48.40 | c | ||||||
1986 | 18.43 | h | 7.98 | d | 31.98 | 40.48 | 56.16 | 65.48 | 68.94 | 65.23 | 54.65 | 44.83 | b | 21.23 | f | 18.54 | e | 45.43 | b | |||||||
1987 | 17.47 | 24.38 | 25.46 | f | 49.73 | 60.11 | d | 67.93 | 69.56 | 65.44 | 58.73 | 41.20 | d | 33.70 | 20.53 | 46.25 | a | |||||||||
1988 | 3.92 | k | 10.31 | b | 27.96 | f | 44.11 | b | 61.50 | 72.53 | 71.98 | 69.16 | 56.23 | 43.02 | 26.91 | b | 13.18 | k | 50.64 | c | ||||||
1989 | 10.94 | g | 1.90 | g | 17.06 | 40.87 | 57.68 | 62.80 | b | 73.63 | 68.73 | 58.27 | 43.94 | d | 26.73 | h | 3.10 | f | 52.87 | d | ||||||
1990 | 21.13 | h | 16.36 | f | 30.36 | f | 41.12 | b | 53.18 | 65.43 | 68.69 | 69.58 | 60.25 | 44.18 | 28.83 | a | 8.97 | a | 48.91 | c | ||||||
1991 | 7.81 | 23.26 | a | 28.90 | 45.93 | a | 58.53 | 67.20 | 68.85 | 69.79 | 56.63 | 39.23 | a | 21.39 | b | 18.18 | 42.14 | |||||||||
1992 | 17.00 | a | 20.40 | 31.37 | 40.03 | a | 58.18 | a | 62.15 | 62.02 | 63.71 | 53.29 | k | 40.61 | m | 25.43 | g | 6.24 | j | 44.36 | d | |||||
1993 | 3.77 | k | 6.59 | k | 24.71 | l | 38.63 | k | 52.26 | j | 58.75 | l | 61.73 | k | 64.86 | j | 52.03 | l | 40.14 | j | 22.97 | m | 13.21 | l | ----- | z |
1994 | -7.26 | l | 1.65 | h | 28.59 | i | 39.94 | n | 56.81 | o | 64.30 | h | 64.94 | e | 64.56 | n | 59.71 | m | 45.38 | k | 29.50 | j | 16.95 | l | 64.94 | k |
1995 | 5.83 | k | 10.78 | h | 24.97 | l | 36.86 | p | 48.27 | p | 68.05 | j | 66.56 | m | 68.13 | l | 56.34 | n | 41.39 | i | 19.88 | m | 8.43 | k | ----- | z |
1996 | -3.74 | h | 13.03 | m | 15.09 | i | 33.25 | l | 51.89 | m | 65.12 | m | 66.70 | f | 69.29 | j | 57.39 | g | 42.56 | g | 12.71 | f | 2.50 | k | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.61 | b | ----- | z | 25.12 | a | 25.10 | a | 37.28 | i |
1998 | 7.97 | a | 25.93 | 23.31 | 48.57 | 58.27 | 60.55 | 70.45 | 71.69 | 62.57 | 46.21 | 27.08 | 14.95 | a | 43.13 | |||||||||||
1999 | 4.19 | 19.88 | 27.65 | 42.43 | 54.90 | a | 63.82 | 69.76 | 67.02 | 54.68 | 44.23 | 36.45 | 21.94 | 42.24 | ||||||||||||
2000 | 10.06 | 21.67 | b | 34.72 | b | 42.07 | 57.18 | c | 61.48 | 69.95 | 68.87 | e | 56.88 | 46.98 | a | 22.57 | -0.07 | c | 41.03 | |||||||
2001 | 14.69 | b | 4.70 | 24.97 | a | 42.32 | 56.98 | 63.28 | 70.40 | 71.05 | 58.98 | 41.98 | 36.62 | 17.59 | b | 41.96 | ||||||||||
2002 | 14.45 | 22.88 | b | 16.33 | a | 37.79 | a | 49.61 | 66.19 | a | 72.20 | a | 66.60 | 59.80 | 34.02 | b | 26.80 | b | 18.77 | a | 40.45 | |||||
2003 | 7.33 | b | 4.64 | 20.53 | 44.03 | a | 54.33 | a | 64.10 | 69.20 | a | 70.70 | c | 57.17 | a | 47.67 | a | 20.48 | b | 19.14 | b | 39.94 | ||||
2004 | -0.31 | e | 14.73 | c | 26.02 | a | 41.95 | 50.17 | a | 60.43 | 67.55 | 60.00 | h | 59.82 | 44.40 | a | 33.95 | 17.34 | b | 37.82 | a | |||||
2005 | 3.97 | a | 15.82 | 25.28 | a | 47.60 | 52.52 | 65.82 | 69.47 | 66.80 | a | 60.78 | 46.95 | b | 29.67 | 17.47 | 41.84 | |||||||||
2006 | 23.94 | 9.77 | 24.55 | a | 48.53 | 57.52 | a | 66.52 | 73.38 | a | 69.11 | 57.30 | 40.15 | 26.68 | 20.47 | 43.16 | ||||||||||
2007 | 12.32 | c | ----- | z | 28.60 | 41.95 | 55.84 | 67.21 | a | 72.84 | 64.78 | a | 58.18 | b | 46.95 | b | 27.40 | a | 9.45 | 44.14 | a | |||||
2008 | 5.82 | a | 5.73 | a | 22.98 | a | 40.60 | a | 51.03 | 61.85 | 68.47 | 68.32 | 57.27 | 45.26 | ----- | z | ----- | z | 42.73 | b | ||||||
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 | 25.65 | c | 6.62 | o | 25.65 | k |
2011 | 3.60 | f | 7.00 | 15.40 | 37.07 | 50.61 | 61.85 | 70.82 | 67.76 | 58.88 | 48.58 | 30.50 | 21.40 | 42.72 | a | |||||||||||
2012 | 16.42 | 18.29 | a | 37.10 | 43.90 | 55.68 | 65.48 | 73.95 | 67.47 | 58.12 | 40.77 | 25.64 | a | ----- | z | 45.71 | a | |||||||||
2013 | 8.36 | b | 10.93 | 15.38 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9.65 | j | |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.20 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 5.26 | 11.21 | 23.15 | 40.80 | 53.82 | 63.25 | 69.37 | 67.25 | 56.41 | 44.04 | 26.31 | 12.52 | 39.15 | |||||||||||||
S.D. | 7.75 | 7.59 | 6.11 | 4.15 | 3.94 | 3.07 | 2.67 | 2.76 | 3.07 | 3.82 | 5.24 | 6.79 | 1.88 | |||||||||||||
SKEW | -0.22 | -0.20 | 0.20 | -0.04 | 0.15 | 0.28 | 0.23 | 0.04 | -0.27 | -0.32 | -0.14 | -0.24 | 0.01 | |||||||||||||
MAX | 23.94 | 25.93 | 37.10 | 49.73 | 64.30 | 72.53 | 79.03 | 73.10 | 63.33 | 54.82 | 36.62 | 25.10 | 43.28 | |||||||||||||
MIN | -13.44 | -14.97 | 11.94 | 30.87 | 45.60 | 57.32 | 62.02 | 61.27 | 46.62 | 32.42 | 14.12 | -2.83 | 33.93 | |||||||||||||
YRS | 76 | 79 | 81 | 84 | 83 | 84 | 84 | 83 | 82 | 80 | 81 | 76 | 64 |