YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1925 | ----- | z | ----- | z | ----- | z | ----- | z | 54.32 | 66.09 | c | 69.45 | 70.92 | 64.82 | 36.48 | 30.60 | 15.22 | a | 50.99 | d | ||||||
1926 | 12.16 | b | 22.63 | a | 25.19 | 43.13 | 61.66 | 63.25 | 71.82 | 68.74 | 57.32 | 45.14 | c | 27.77 | b | 15.00 | 42.82 | |||||||||
1927 | 13.66 | 23.91 | 36.27 | a | 47.63 | c | 55.89 | 64.87 | 68.42 | a | 66.52 | a | 62.87 | 51.02 | 30.08 | 6.92 | 44.00 | |||||||||
1928 | 16.26 | 21.80 | a | 33.50 | 40.60 | 61.34 | 62.85 | 72.26 | 70.06 | 58.33 | 50.60 | b | 36.50 | 24.77 | a | 45.74 | ||||||||||
1929 | 1.71 | 8.39 | 32.85 | 47.07 | 54.56 | 65.48 | 73.74 | 69.70 | a | 60.24 | a | 49.10 | 29.22 | 17.47 | 42.46 | |||||||||||
1930 | 4.77 | 26.48 | 33.03 | 48.55 | 59.02 | 68.05 | 74.47 | 72.47 | 61.07 | a | 46.74 | 35.62 | 21.26 | 45.96 | ||||||||||||
1931 | 25.50 | 30.71 | 31.94 | 49.60 | 56.69 | 74.13 | 75.90 | 70.52 | 68.67 | 54.05 | 40.17 | 30.52 | 50.70 | |||||||||||||
1932 | 17.29 | 18.66 | 22.87 | 46.48 | 58.92 | 70.95 | b | 74.26 | 71.71 | 59.88 | 46.90 | 30.78 | 15.90 | 44.55 | ||||||||||||
1933 | 23.06 | 13.89 | 32.68 | 45.50 | 58.68 | 76.78 | a | 78.48 | 69.87 | 67.93 | 47.32 | 32.18 | 18.10 | 47.04 | ||||||||||||
1934 | 20.90 | 20.62 | 30.82 | 46.12 | 67.98 | a | 73.08 | 75.42 | 69.15 | 58.45 | 54.37 | 38.53 | 14.39 | 47.49 | ||||||||||||
1935 | 10.47 | a | 25.75 | 35.05 | 44.17 | 54.34 | 63.98 | 78.58 | 72.69 | 61.95 | 47.27 | 29.07 | 18.26 | 45.13 | ||||||||||||
1936 | 3.87 | a | -1.28 | 29.34 | 39.28 | 64.24 | 65.87 | 79.29 | 73.77 | 65.78 | 45.72 | a | 30.77 | 21.07 | a | 43.14 | ||||||||||
1937 | 3.39 | d | 12.41 | 26.05 | 44.52 | 59.79 | 66.63 | 75.05 | a | 76.92 | 63.08 | 45.23 | 30.60 | 16.61 | 43.36 | |||||||||||
1938 | 13.13 | 21.23 | 37.11 | 46.23 | 55.76 | 66.75 | 72.92 | 72.85 | 62.58 | 55.89 | 31.98 | 21.27 | 46.48 | |||||||||||||
1939 | 19.15 | 10.82 | 29.45 | 43.68 | 64.47 | 69.48 | 74.24 | 71.97 | 65.58 | 48.89 | 37.08 | 28.79 | 46.97 | |||||||||||||
1940 | 6.26 | 20.66 | 24.29 | 44.58 | 56.84 | 67.97 | 74.63 | 68.48 | 64.93 | 54.37 | 27.77 | 20.81 | 44.30 | |||||||||||||
1941 | 17.30 | a | 14.39 | 27.34 | 51.95 | 64.31 | 68.12 | 73.76 | 71.58 | 63.40 | 51.02 | 36.38 | 25.98 | 47.13 | ||||||||||||
1942 | 19.39 | 19.91 | 35.45 | 51.35 | 55.26 | 66.18 | 70.56 | 70.06 | 57.80 | 49.15 | 34.02 | 15.71 | 45.40 | |||||||||||||
1943 | 6.52 | 17.34 | 24.63 | 45.47 | 55.40 | 70.87 | 73.69 | 71.68 | 58.27 | 48.05 | 27.40 | 21.47 | 43.40 | |||||||||||||
1944 | 25.56 | 21.40 | 26.24 | 41.60 | 60.69 | 69.58 | 69.11 | 70.77 | 60.65 | 49.68 | 36.82 | 17.82 | 45.83 | |||||||||||||
1945 | 10.66 | 16.34 | 37.55 | 43.32 | 50.95 | 59.72 | 69.15 | 69.03 | 59.70 | 47.89 | 31.63 | 12.40 | 42.36 | |||||||||||||
1946 | 13.98 | 16.70 | 40.84 | 49.82 | 54.84 | 66.45 | 72.08 | 67.45 | 59.13 | 49.82 | 31.13 | 19.13 | a | 45.11 | ||||||||||||
1947 | 20.31 | 12.98 | 27.84 | 40.75 | 52.69 | 63.25 | 70.89 | 76.82 | a | 62.05 | 57.77 | 24.97 | 14.10 | 43.70 | ||||||||||||
1948 | 6.79 | 12.55 | 25.58 | 50.43 | 57.44 | 66.77 | 75.29 | 72.10 | 67.15 | 50.61 | 35.25 | 19.71 | 44.97 | |||||||||||||
1949 | 14.69 | 13.16 | 30.98 | 47.95 | 62.94 | 72.27 | 76.68 | 73.73 | 58.98 | 53.50 | 38.05 | 20.52 | 46.95 | |||||||||||||
1950 | 6.63 | 15.08 | d | 23.92 | 37.75 | 56.11 | 68.12 | 70.10 | 67.50 | 61.27 | 52.60 | 27.50 | 11.00 | 41.46 | ||||||||||||
1951 | 6.39 | 15.11 | a | 19.89 | 40.33 | a | 61.28 | a | 63.80 | 71.00 | 68.44 | 57.43 | 49.60 | 25.40 | 16.32 | a | 41.25 | |||||||||
1952 | 12.34 | 22.88 | 24.84 | 49.20 | 59.19 | 70.12 | 72.66 | 68.89 | 62.83 | 44.68 | 35.27 | 22.68 | 45.46 | |||||||||||||
1953 | 16.26 | 17.56 | a | 30.34 | 41.97 | 58.68 | 70.55 | 72.19 | 72.23 | 62.35 | 57.18 | 38.60 | 21.97 | 46.66 | ||||||||||||
1954 | 10.82 | 32.68 | 28.77 | 47.73 | 53.19 | 70.63 | 73.00 | 69.44 | 61.08 | 47.58 | 38.27 | 21.97 | 46.26 | |||||||||||||
1955 | 13.13 | 13.70 | 26.40 | 54.15 | 63.47 | 68.68 | 77.73 | 75.50 | 61.87 | 51.94 | 26.65 | 11.61 | 45.40 | |||||||||||||
1956 | 8.96 | c | 13.78 | 25.10 | 42.90 | 59.23 | 72.98 | 70.18 | 70.19 | b | 59.54 | b | 57.45 | a | 33.40 | 23.62 | a | 44.78 | ||||||||
1957 | 10.58 | 21.05 | 30.65 | a | 46.91 | a | 57.68 | a | 68.03 | a | 76.68 | a | 70.65 | 59.96 | b | 48.19 | 33.17 | 26.11 | 45.81 | |||||||
1958 | 22.48 | 15.48 | 32.40 | 48.32 | 61.24 | 63.73 | 69.97 | 71.60 | 63.02 | 53.15 | 36.00 | a | 16.06 | d | 46.12 | |||||||||||
1959 | 9.87 | e | 16.80 | 34.63 | 47.64 | a | 62.19 | e | 69.70 | 72.45 | 74.61 | 62.93 | 44.52 | 26.52 | b | 29.71 | e | 45.96 | ||||||||
1960 | 15.45 | b | 17.86 | a | 21.21 | 46.88 | 58.27 | 64.75 | f | 72.43 | d | 73.31 | d | 63.05 | 50.68 | 36.45 | a | 16.22 | f | 45.56 | b | |||||
1961 | 14.58 | 24.79 | 34.69 | 40.63 | 56.47 | 69.32 | 71.23 | 73.30 | f | 60.85 | 51.71 | 34.50 | 17.08 | 43.26 | a | |||||||||||
1962 | 9.88 | a | 14.77 | 26.77 | 44.02 | 62.97 | 68.21 | a | 69.50 | 70.40 | 58.80 | 51.06 | 36.25 | b | 20.16 | 44.40 | ||||||||||
1963 | 3.35 | a | 14.25 | b | 36.43 | a | 46.68 | 57.32 | 70.48 | 72.98 | b | 68.65 | 62.36 | a | 58.35 | 38.00 | b | 8.33 | d | 44.77 | ||||||
1964 | 18.13 | a | 23.29 | 25.73 | a | 46.85 | 61.65 | 68.08 | 75.21 | 66.79 | 58.83 | a | 47.92 | 34.87 | 12.10 | 44.95 | ||||||||||
1965 | 7.66 | 6.87 | i | ----- | z | 41.45 | 59.55 | 67.02 | 70.42 | 68.19 | 53.25 | 50.16 | 32.62 | 26.79 | 47.71 | b | ||||||||||
1966 | 1.16 | 12.89 | a | 35.40 | a | 41.93 | 53.48 | a | 67.55 | 75.84 | 66.98 | 60.47 | 46.85 | 29.88 | 16.00 | 42.37 | ||||||||||
1967 | 13.47 | 7.91 | 29.83 | a | 45.16 | a | 52.40 | a | 67.09 | c | 69.53 | 66.29 | 59.08 | e | 45.95 | b | 31.45 | 21.02 | 42.43 | |||||||
1968 | 12.12 | a | 15.17 | 41.17 | a | 50.05 | 55.89 | 68.80 | 71.56 | 71.47 | 60.48 | 50.05 | 34.02 | 17.42 | 45.68 | |||||||||||
1969 | 6.00 | 16.71 | 23.06 | 48.00 | a | 61.53 | 62.02 | b | 73.18 | i | 74.33 | b | 61.45 | 45.18 | 33.07 | 19.19 | 40.96 | a | ||||||||
1970 | 2.90 | 13.73 | 23.65 | 44.45 | 56.98 | 69.58 | 73.39 | 69.90 | 59.68 | 48.10 | 31.13 | 16.10 | 42.47 | |||||||||||||
1971 | 5.63 | 14.21 | 25.38 | g | 47.09 | h | 55.55 | 72.15 | 68.45 | 68.87 | a | 62.10 | 54.35 | 33.45 | a | 18.71 | 45.35 | b | ||||||||
1972 | 6.68 | 11.67 | 27.38 | a | 42.67 | 63.00 | 68.63 | 70.81 | 71.50 | a | 60.18 | 45.79 | 33.27 | 12.60 | 42.85 | |||||||||||
1973 | 16.92 | 22.39 | 40.63 | 45.78 | 57.16 | 71.32 | 73.85 | ----- | z | 61.37 | 55.76 | 35.15 | 17.55 | 45.26 | a | |||||||||||
1974 | 12.61 | 16.61 | a | 30.58 | 48.60 | 55.97 | 67.63 | 77.87 | 68.02 | 58.50 | 51.89 | 34.70 | 24.65 | 45.64 | ||||||||||||
1975 | 14.45 | a | 16.71 | 24.24 | b | 39.48 | 63.03 | a | 68.80 | 75.98 | 71.68 | 58.73 | 52.90 | 35.88 | 19.77 | 45.14 | ||||||||||
1976 | 11.10 | b | 27.16 | 32.13 | 51.77 | 59.13 | 71.13 | 75.68 | 72.16 | 62.22 | 44.52 | 27.65 | 12.18 | 45.57 | ||||||||||||
1977 | -0.02 | a | 23.45 | 38.38 | a | 54.33 | a | 72.05 | j | 70.40 | 75.79 | ----- | z | 62.80 | 48.82 | a | 32.82 | 15.55 | a | 42.23 | b | |||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.08 | 69.71 | 64.18 | 48.50 | 32.42 | 26.67 | a | 52.43 | f | |||||
1980 | 16.71 | 16.22 | 28.15 | 49.60 | 62.23 | 68.93 | 75.50 | 71.82 | 61.98 | 46.24 | 37.37 | 21.90 | b | 46.39 | ||||||||||||
1981 | 19.13 | 23.75 | 39.60 | 51.23 | 57.89 | 67.73 | 73.53 | 70.63 | 61.10 | 47.65 | 38.22 | 17.69 | 47.35 | |||||||||||||
1982 | 1.28 | b | 15.33 | a | 29.53 | 44.31 | a | 63.13 | 64.58 | 75.17 | a | 72.30 | a | 62.28 | 51.27 | 31.02 | 26.35 | a | 44.71 | |||||||
1983 | 19.97 | 26.35 | b | 34.24 | 42.88 | 55.85 | 68.28 | 77.32 | a | 76.63 | 63.35 | 50.57 | a | 35.68 | 3.75 | a | 46.24 | |||||||||
1984 | 12.79 | 28.29 | 25.40 | a | 48.00 | 57.98 | 70.38 | a | 72.54 | g | 74.23 | 58.78 | 52.18 | 34.57 | 17.55 | c | 43.65 | a | ||||||||
1985 | 11.87 | 15.88 | 36.47 | a | 53.23 | 64.15 | 65.16 | a | 72.97 | 66.79 | 61.10 | 48.13 | 25.87 | 7.33 | a | 44.08 | ||||||||||
1986 | 17.74 | 15.43 | 35.27 | 51.28 | 61.31 | 70.95 | 74.71 | 68.13 | 60.74 | a | 50.69 | 29.10 | 25.56 | 46.74 | ||||||||||||
1987 | 22.61 | 32.48 | 39.72 | a | 54.50 | 65.86 | b | 73.23 | 76.85 | 70.32 | 63.18 | 46.42 | 38.02 | 25.34 | 50.71 | |||||||||||
1988 | 10.33 | b | 14.09 | a | 35.16 | 48.86 | a | 66.87 | 75.57 | 77.68 | 75.03 | 63.52 | 44.77 | 33.62 | 20.63 | 47.18 | ||||||||||
1989 | 21.97 | 10.32 | 27.69 | 47.40 | 59.19 | 68.85 | 75.82 | 71.16 | 61.30 | 51.39 | 30.22 | 11.56 | 44.74 | |||||||||||||
1990 | 26.73 | 24.93 | 36.82 | 47.93 | b | 57.65 | 70.90 | 72.26 | 71.24 | 65.53 | 48.77 | a | 38.28 | 17.10 | 48.18 | |||||||||||
1991 | 12.74 | 25.68 | 35.52 | 50.58 | 63.12 | a | 73.97 | 73.58 | 72.07 | a | 60.75 | 48.65 | 25.05 | 20.56 | 46.86 | |||||||||||
1992 | 22.32 | 28.64 | 35.16 | 44.98 | 61.63 | 66.55 | 66.76 | 66.23 | 61.15 | 48.45 | 31.57 | a | 22.13 | a | 46.30 | |||||||||||
1993 | 14.74 | 16.41 | 29.10 | 45.33 | 58.65 | 66.21 | b | 71.11 | 71.40 | 56.05 | a | 47.93 | a | 30.31 | a | 22.40 | 44.14 | |||||||||
1994 | 4.53 | 12.27 | 34.88 | a | 47.45 | 62.23 | 71.07 | 70.53 | 68.02 | a | 64.78 | 53.02 | 38.83 | a | 24.53 | a | 46.01 | |||||||||
1995 | 17.95 | a | 20.42 | b | 34.82 | 43.42 | 57.71 | 71.83 | c | 75.42 | f | 75.08 | 61.12 | a | 48.84 | 27.78 | 20.52 | c | 43.59 | a | ||||||
1996 | 11.11 | c | 19.02 | a | 26.29 | 43.28 | a | 56.95 | 69.67 | 70.95 | 70.58 | 63.17 | a | 50.81 | 26.91 | b | ----- | z | 46.25 | a | ||||||
1997 | ----- | z | 21.09 | a | 30.88 | a | 45.17 | 55.45 | 70.83 | 72.74 | 69.92 | 65.41 | a | 52.24 | 29.41 | a | 28.39 | 49.23 | a | |||||||
1998 | 20.53 | a | 32.23 | b | 32.98 | c | 52.05 | a | 66.77 | 66.90 | a | 73.24 | b | 73.32 | 68.13 | 52.97 | 38.38 | a | 28.41 | c | 50.49 | |||||
1999 | 14.59 | c | 29.88 | 36.15 | a | 50.79 | b | 62.48 | c | 70.41 | a | 77.85 | 72.66 | 63.74 | a | 51.77 | a | 42.62 | 28.29 | c | 50.10 | |||||
2000 | 17.55 | b | 29.65 | b | 42.55 | b | 47.85 | 62.31 | 67.64 | a | 74.27 | a | 74.15 | a | 63.21 | b | 55.24 | d | ----- | z | ----- | z | 53.44 | b | ||
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.62 | b | 49.97 | o | 45.27 | b | 34.67 | m | 53.45 | j |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | 56.60 | e | 65.80 | e | 70.82 | 71.95 | 59.95 | b | 50.42 | f | ----- | z | 19.68 | i | 65.02 | g | ||
2004 | 9.89 | 17.28 | 34.15 | 46.62 | d | 54.81 | b | 62.97 | 68.56 | 62.75 | i | 64.95 | b | 48.25 | c | 36.24 | a | 20.41 | d | 42.19 | a | |||||
2005 | 13.16 | 24.40 | c | 23.08 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 18.78 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 12.93 | 18.91 | 31.19 | 46.47 | 59.10 | 68.43 | 73.27 | 70.97 | 61.64 | 49.84 | 33.12 | 19.27 | 45.42 | |||||||||||||
S.D. | 6.46 | 6.48 | 5.37 | 3.83 | 3.77 | 3.24 | 2.84 | 2.57 | 2.76 | 3.72 | 4.33 | 5.68 | 2.09 | |||||||||||||
SKEW | 0.01 | 0.08 | 0.03 | 0.01 | 0.19 | -0.06 | 0.04 | 0.24 | 0.11 | -0.15 | 0.13 | -0.26 | 0.46 | |||||||||||||
MAX | 26.73 | 32.68 | 42.55 | 54.50 | 67.98 | 76.78 | 79.29 | 76.92 | 68.67 | 58.35 | 45.27 | 30.52 | 50.71 | |||||||||||||
MIN | -0.02 | -1.28 | 19.89 | 37.75 | 50.95 | 59.72 | 66.76 | 66.23 | 53.25 | 36.48 | 24.97 | 3.75 | 41.25 | |||||||||||||
YRS | 74 | 74 | 72 | 73 | 75 | 75 | 74 | 73 | 78 | 76 | 76 | 73 | 61 |