YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1924 | 8.82 | a | 18.71 | 16.56 | 31.17 | 41.98 | 48.52 | 55.55 | 53.32 | 47.02 | d | 36.48 | c | 19.20 | c | 3.39 | c | 31.73 | ||||||||
1925 | 14.38 | c | 21.54 | e | 25.18 | f | 37.22 | l | 44.58 | f | 57.32 | p | 58.95 | 54.16 | 48.25 | b | 33.52 | a | 22.64 | b | 20.83 | b | 34.28 | d | ||
1926 | 12.46 | f | 21.98 | d | 21.97 | b | 38.60 | f | 47.81 | 53.46 | b | 59.61 | 56.34 | 40.88 | b | 38.60 | 29.50 | 12.31 | g | 41.13 | c | |||||
1927 | 13.10 | e | 14.00 | i | 18.88 | f | 30.81 | l | 40.61 | c | 53.40 | 59.03 | 53.57 | a | 47.41 | a | 37.67 | a | 29.03 | 8.11 | c | 37.99 | c | |||
1928 | 18.04 | g | 10.29 | l | 23.75 | a | 26.42 | d | 47.70 | a | 47.79 | a | 58.52 | b | 52.34 | 47.50 | b | 37.75 | c | 23.74 | a | 9.63 | 37.51 | b | ||
1929 | 6.74 | l | 6.98 | d | 21.72 | d | 29.91 | c | 38.46 | d | 49.93 | a | 57.85 | a | 59.71 | 40.93 | g | 33.86 | c | 12.83 | 15.91 | b | 32.72 | b | ||
1930 | -5.32 | a | 17.43 | g | 18.56 | g | 35.94 | d | ----- | z | 46.83 | 58.02 | 57.60 | 46.97 | 35.76 | 17.80 | 9.19 | e | 33.64 | c | ||||||
1931 | 14.27 | c | 16.26 | c | 16.12 | j | 33.72 | 41.75 | o | ----- | z | 58.98 | c | 56.69 | 46.66 | n | 36.52 | b | 18.17 | 11.84 | 30.81 | d | ||||
1932 | 4.26 | 14.69 | 19.60 | a | 33.70 | 44.35 | 51.22 | c | 57.68 | f | 55.02 | 47.15 | 32.16 | b | 25.57 | 4.48 | 30.20 | a | ||||||||
1933 | 16.21 | 4.55 | 19.93 | a | 30.47 | 39.45 | 54.84 | b | 62.31 | b | 56.20 | a | 47.75 | 41.59 | c | 25.80 | b | 23.32 | 35.20 | |||||||
1934 | 19.00 | 24.45 | 31.42 | 41.58 | 50.08 | 51.30 | 60.69 | 58.11 | 44.33 | 42.27 | 29.53 | a | 16.35 | a | 39.09 | |||||||||||
1935 | 16.61 | 17.98 | 22.66 | 31.45 | 40.02 | 51.25 | 59.98 | 56.50 | 50.08 | 37.89 | 20.95 | 16.40 | e | 35.15 | ||||||||||||
1936 | 13.35 | 14.98 | 20.24 | h | 36.18 | 47.78 | a | 56.40 | 65.10 | 59.02 | 47.52 | a | 37.65 | 15.89 | b | 13.30 | c | 37.02 | a | |||||||
1937 | -4.56 | g | 13.88 | h | 23.86 | f | 32.90 | j | 46.25 | c | 51.38 | a | 59.68 | 57.03 | a | 50.78 | a | 40.23 | c | 27.33 | d | 14.80 | d | 43.43 | d | |
1938 | 12.48 | g | 20.11 | f | 25.78 | f | 33.46 | b | 42.19 | 53.38 | 57.87 | 56.71 | 52.67 | 39.58 | 14.50 | 15.40 | 40.64 | c | ||||||||
1939 | 14.21 | 8.62 | 26.66 | 36.92 | 47.28 | a | 49.13 | 60.92 | 57.77 | 50.52 | 38.42 | a | 27.77 | 23.03 | 36.77 | |||||||||||
1940 | 14.45 | 19.52 | 26.48 | 36.21 | a | 47.26 | 54.22 | 59.80 | a | 59.10 | 51.20 | 40.16 | 17.98 | 16.68 | 36.92 | |||||||||||
1941 | 15.62 | a | 20.68 | 27.47 | 34.47 | 46.50 | e | 52.82 | 59.69 | 57.98 | 43.98 | a | 36.08 | a | 24.60 | 17.69 | 36.47 | |||||||||
1942 | 10.11 | 11.12 | 21.79 | 36.98 | 40.55 | 49.47 | 60.63 | 58.77 | 48.07 | 37.18 | 21.08 | 17.32 | 34.42 | |||||||||||||
1943 | 8.85 | 15.29 | 17.69 | 39.00 | 41.32 | 49.36 | a | 58.35 | 56.39 | 49.12 | 38.94 | 27.10 | f | 13.74 | 35.28 | a | ||||||||||
1944 | 8.89 | 17.64 | a | 18.52 | 34.45 | 44.23 | 48.95 | 56.31 | 54.45 | 46.58 | 40.76 | 21.68 | 12.82 | a | 33.77 | |||||||||||
1945 | 16.90 | 19.18 | 25.03 | 29.07 | 43.74 | 47.63 | 57.68 | 55.55 | 44.13 | 38.81 | 23.47 | 12.29 | 34.46 | |||||||||||||
1946 | 11.21 | 16.59 | 27.94 | 38.22 | 41.39 | 51.78 | 59.97 | 56.85 | 46.35 | 31.76 | 23.61 | b | 18.56 | 35.35 | ||||||||||||
1947 | 9.37 | 17.78 | a | 25.82 | c | 31.61 | l | ----- | z | 47.86 | l | 59.21 | 56.18 | a | 48.88 | 40.76 | 19.07 | 15.03 | 32.46 | c | ||||||
1948 | 10.27 | 14.36 | ----- | z | 35.10 | j | 45.07 | a | 54.19 | a | 58.41 | b | 56.73 | 48.57 | 37.81 | 18.23 | 9.81 | 35.34 | b | |||||||
1949 | -1.79 | 14.09 | a | 26.28 | b | 37.17 | 46.15 | 51.98 | 59.18 | 58.47 | 48.05 | a | 32.73 | 30.64 | b | 13.40 | g | 36.63 | a | |||||||
1950 | 9.19 | b | 19.14 | 21.90 | 31.07 | 39.23 | 50.38 | a | 56.13 | 55.39 | 47.32 | 40.40 | 25.60 | 21.24 | 34.75 | |||||||||||
1951 | 8.98 | 19.41 | 19.27 | 33.40 | 45.08 | a | 45.93 | 57.69 | 54.56 | 46.21 | a | 34.24 | 19.75 | b | 10.85 | 32.95 | ||||||||||
1952 | 12.19 | 12.24 | 18.87 | 36.55 | 44.53 | 52.17 | a | 56.85 | 57.65 | 51.42 | 40.77 | 15.88 | a | 16.84 | c | 34.66 | ||||||||||
1953 | 24.05 | 15.09 | a | 25.14 | b | 29.18 | 38.74 | 50.22 | 62.35 | 58.83 | a | 51.60 | a | 40.68 | a | 29.35 | 13.18 | 36.54 | ||||||||
1954 | 17.98 | 22.59 | 20.13 | d | 35.50 | 45.06 | 48.27 | 61.74 | 55.92 | 48.47 | 35.40 | 29.67 | 10.10 | a | 35.90 | |||||||||||
1955 | 9.03 | 9.83 | a | 14.27 | 30.18 | 42.44 | 50.18 | 60.34 | 60.15 | 47.95 | 37.57 | b | 16.98 | a | 17.33 | e | 33.02 | |||||||||
1956 | 17.47 | 8.45 | 21.27 | 35.33 | 47.85 | 54.42 | 59.87 | 54.98 | 49.73 | 37.61 | 16.69 | a | 15.40 | 34.92 | ||||||||||||
1957 | 1.80 | a | 21.88 | 23.76 | 33.10 | 45.97 | 52.05 | a | 60.37 | 58.32 | 48.32 | 37.84 | 18.28 | 17.79 | 34.96 | |||||||||||
1958 | 13.79 | 24.84 | 23.21 | 32.60 | 50.77 | 53.73 | 56.44 | 60.00 | 47.03 | 39.21 | 22.03 | 19.27 | 36.91 | |||||||||||||
1959 | 13.27 | 17.11 | 22.06 | 34.03 | 39.79 | 55.62 | 59.50 | 57.55 | 47.45 | 36.95 | 19.67 | 12.52 | 34.63 | |||||||||||||
1960 | 10.50 | a | 10.76 | 25.47 | 35.33 | 42.63 | 53.72 | 63.15 | 55.58 | 50.17 | 36.74 | 21.88 | 10.60 | 34.71 | ||||||||||||
1961 | 9.19 | 21.36 | 25.65 | 31.95 | 44.35 | 57.47 | 61.47 | 61.03 | 42.23 | 35.21 | 19.21 | a | 9.97 | 34.92 | ||||||||||||
1962 | 4.82 | 17.55 | 21.89 | 34.58 | 44.37 | 53.07 | 57.24 | 55.48 | 48.78 | 42.18 | 27.27 | 17.27 | a | 35.38 | ||||||||||||
1963 | 2.52 | a | 24.75 | 23.74 | 32.25 | 45.47 | 50.35 | 59.34 | 59.58 | 53.72 | 42.79 | 26.45 | 11.73 | 36.06 | ||||||||||||
1964 | 9.25 | a | 8.31 | 16.97 | 31.83 | 43.80 | a | 50.23 | 61.79 | 54.53 | 45.95 | 38.82 | a | 23.52 | 13.39 | 33.20 | ||||||||||
1965 | 15.16 | 13.68 | 14.37 | 35.75 | 40.87 | a | 50.37 | 58.65 | 55.66 | 39.88 | 41.15 | 29.45 | a | 15.45 | 34.20 | |||||||||||
1966 | 12.29 | 13.59 | 22.71 | 32.22 | 46.87 | 51.67 | 62.95 | 56.76 | 51.55 | 34.82 | a | 25.82 | 13.08 | 35.36 | ||||||||||||
1967 | 17.03 | 16.05 | 23.48 | 29.93 | 41.79 | 51.13 | 61.05 | 60.42 | 51.78 | 37.39 | 24.57 | b | 6.82 | 35.12 | ||||||||||||
1968 | 10.50 | 21.41 | 28.31 | 30.32 | 42.05 | 51.25 | 62.00 | 54.15 | 46.65 | 36.90 | 21.10 | 11.15 | 34.65 | |||||||||||||
1969 | 16.27 | 17.39 | 19.18 | 36.65 | 48.55 | 50.03 | 59.85 | 60.87 | a | 50.53 | 31.45 | 22.47 | 14.61 | 35.66 | ||||||||||||
1970 | 14.73 | 20.38 | 20.68 | 26.35 | 42.84 | 54.27 | 61.10 | 61.76 | 43.28 | 32.21 | 23.85 | 13.40 | 34.57 | |||||||||||||
1971 | 13.84 | 15.23 | 19.15 | 31.90 | 43.32 | 52.73 | 58.79 | 62.74 | 42.60 | 34.47 | 22.17 | 11.52 | 34.04 | |||||||||||||
1972 | 11.71 | 17.69 | 28.10 | 32.75 | 44.71 | 53.70 | 57.15 | 58.27 | 43.62 | 36.63 | 23.10 | 7.08 | 34.54 | |||||||||||||
1973 | 7.92 | 17.50 | 22.68 | 29.91 | c | 43.13 | 51.17 | 59.69 | 58.63 | 46.63 | 38.53 | 25.25 | 16.74 | 34.81 | ||||||||||||
1974 | 13.06 | 16.22 | s | 25.05 | c | 33.88 | a | 41.15 | 56.12 | a | 61.89 | 55.69 | 48.85 | 39.83 | a | 25.14 | a | 10.23 | 37.35 | a | ||||||
1975 | 10.39 | 13.70 | 22.52 | 26.38 | 38.94 | 49.47 | a | 62.24 | 54.38 | a | 48.32 | 37.15 | 19.72 | 17.18 | a | 33.36 | ||||||||||
1976 | 15.29 | 17.83 | 18.20 | a | 33.57 | 45.50 | 51.19 | a | 61.26 | 55.81 | 49.67 | 35.95 | a | 20.19 | q | 10.37 | 35.88 | a | ||||||||
1977 | 7.76 | 18.02 | 19.54 | d | 37.84 | a | 42.05 | a | 58.20 | 60.00 | 56.56 | 47.22 | 37.86 | c | 23.33 | 18.24 | 35.55 | |||||||||
1978 | 17.85 | 20.44 | a | 29.05 | 35.03 | 42.26 | 52.48 | a | 58.89 | 55.23 | 47.07 | 38.43 | b | 19.69 | n | 2.11 | m | 39.67 | b | |||||||
1979 | 4.35 | k | 15.72 | h | ----- | z | 37.92 | x | 43.65 | a | 52.65 | 61.03 | 57.92 | 51.42 | 39.02 | 14.84 | b | 18.31 | b | 42.35 | d | |||||
1980 | 10.43 | b | ----- | z | 24.67 | p | 28.25 | x | 44.27 | a | 51.05 | 59.19 | 53.08 | 48.28 | 36.87 | a | 25.54 | b | 21.05 | 38.86 | c | |||||
1981 | 18.31 | 19.10 | b | 27.54 | c | 35.82 | 44.14 | b | 52.13 | 58.56 | 58.82 | 50.48 | 35.39 | 27.18 | 16.84 | 37.03 | ||||||||||
1982 | 11.13 | 13.94 | a | 25.13 | 25.86 | a | 40.73 | a | 50.85 | 57.53 | 59.23 | 47.64 | b | 34.26 | 16.50 | 11.68 | 32.87 | |||||||||
1983 | 17.26 | 21.00 | 27.32 | 29.98 | 41.44 | 50.12 | a | 56.56 | 61.25 | a | 47.77 | b | 38.70 | a | 24.20 | 7.48 | c | 35.26 | ||||||||
1984 | 11.56 | 13.81 | 24.68 | a | 29.67 | 42.04 | d | 50.02 | 60.08 | 58.26 | 44.86 | b | 31.97 | b | 21.81 | a | 8.56 | 33.11 | ||||||||
1985 | 6.55 | 8.41 | 18.48 | a | 35.92 | 45.42 | 52.40 | 60.35 | 53.38 | a | 42.34 | b | 35.08 | a | 10.62 | m | 12.19 | 33.68 | a | |||||||
1986 | 19.18 | 21.89 | 32.10 | a | 33.97 | a | 43.05 | 56.23 | 55.73 | 59.35 | a | ----- | z | 37.19 | 22.24 | c | 11.06 | 35.64 | a | |||||||
1987 | 11.21 | 20.46 | 27.05 | 39.05 | 47.90 | 53.76 | g | 56.98 | a | 53.98 | c | 50.12 | 38.23 | 24.43 | 13.22 | a | 34.78 | a | ||||||||
1988 | 9.44 | 17.59 | 21.40 | a | 36.26 | e | 45.73 | 58.63 | 62.10 | 58.55 | 48.64 | b | 43.95 | 23.40 | a | 11.23 | 36.41 | |||||||||
1989 | 11.81 | b | 10.59 | 27.52 | 31.71 | i | 43.42 | 53.15 | d | 63.10 | 57.09 | c | 47.63 | 40.11 | h | 25.89 | g | 12.29 | e | 36.29 | c | |||||
1990 | 16.10 | b | 15.24 | a | 26.78 | a | 38.62 | 42.68 | a | 52.40 | 60.05 | 59.03 | 54.08 | 34.72 | b | 23.07 | c | 2.25 | g | 38.44 | a | |||||
1991 | 9.93 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.00 | 49.77 | 34.98 | g | 18.11 | c | 10.29 | 29.82 | g | |||
1992 | 12.40 | 22.74 | 32.26 | 40.03 | a | 50.35 | 54.72 | 55.74 | 55.08 | l | 47.03 | 39.16 | 18.15 | 9.69 | e | 34.75 | a | |||||||||
1993 | 6.71 | l | 8.96 | p | 27.02 | 33.95 | 47.56 | 50.78 | c | 51.63 | 54.29 | 47.53 | 36.64 | b | 16.43 | b | 13.39 | i | 40.65 | c | ||||||
1994 | 17.36 | b | 15.40 | b | 26.57 | a | 36.63 | 49.45 | 55.63 | o | 59.84 | 60.83 | a | 52.43 | 35.63 | 13.84 | b | 15.79 | b | 34.89 | a | |||||
1995 | 12.94 | 21.32 | 24.90 | a | 33.28 | 42.55 | 51.14 | b | 58.39 | 57.70 | h | ----- | z | 33.34 | 27.70 | 12.86 | c | 31.84 | b | |||||||
1996 | 8.19 | g | 11.43 | a | 22.91 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.17 | j |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.94 | v | 60.05 | u | 47.92 | r | 39.50 | x | 14.64 | s | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.29 | w | 12.08 | s | ----- | z |
2002 | 11.66 | o | 14.29 | k | 18.08 | l | 33.88 | q | 44.60 | g | 53.31 | i | 63.42 | g | 54.35 | k | 49.24 | e | 33.33 | e | 21.27 | q | 16.72 | o | 41.28 | j |
2003 | 23.64 | m | 12.38 | d | 28.04 | f | 36.24 | e | 39.65 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.31 | j |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 11.94 | 16.54 | 23.38 | 33.67 | 44.01 | 51.93 | 59.41 | 57.19 | 47.93 | 37.29 | 22.33 | 13.67 | 34.99 | |||||||||||||
S.D. | 5.01 | 4.65 | 4.07 | 3.46 | 3.00 | 2.61 | 2.22 | 2.38 | 2.90 | 2.83 | 4.43 | 4.21 | 1.38 | |||||||||||||
SKEW | -0.81 | -0.41 | -0.05 | -0.24 | 0.24 | 0.35 | -0.41 | 0.13 | -0.46 | -0.06 | -0.10 | 0.06 | 0.28 | |||||||||||||
MAX | 24.05 | 24.84 | 32.26 | 41.58 | 50.77 | 58.63 | 65.10 | 62.74 | 54.08 | 43.95 | 30.64 | 23.32 | 39.09 | |||||||||||||
MIN | -5.32 | 4.55 | 14.27 | 25.86 | 38.46 | 45.93 | 51.63 | 52.34 | 39.88 | 31.45 | 12.83 | 3.39 | 31.73 | |||||||||||||
YRS | 65 | 64 | 62 | 63 | 67 | 66 | 70 | 70 | 69 | 71 | 67 | 67 | 42 |