YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1909 | 40.79 | g | 38.86 | 45.87 | 52.60 | 62.00 | 77.63 | 82.48 | 75.35 | 71.03 | 62.96 | c | 48.73 | 26.77 | 58.57 | a | ||||||||||
1910 | 37.00 | 37.21 | 56.61 | 57.83 | 67.23 | 77.83 | a | 82.52 | 78.39 | 75.57 | 61.42 | 52.43 | 40.00 | b | 60.34 | |||||||||||
1911 | 41.33 | a | 37.61 | 49.52 | 56.63 | 67.19 | 74.53 | 74.33 | a | 76.77 | ----- | z | ----- | z | ----- | z | ----- | z | 59.74 | d | ||||||
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.68 | 50.70 | 33.19 | 45.86 | i | |||
1913 | 30.50 | a | 36.96 | b | 44.74 | 56.34 | a | 69.10 | 73.20 | 79.23 | a | 78.90 | 67.33 | 56.42 | 48.63 | 30.43 | a | 55.98 | ||||||||
1914 | 42.00 | a | 47.74 | a | 56.58 | ----- | z | 68.15 | k | 76.07 | 77.55 | 77.45 | 73.00 | 59.06 | 51.90 | 29.74 | 59.11 | b | ||||||||
1915 | 32.64 | i | 39.25 | 45.16 | 56.23 | 61.48 | 74.50 | 78.42 | 75.65 | 69.83 | 62.60 | a | 46.90 | 38.35 | 58.94 | a | ||||||||||
1916 | 36.29 | 47.07 | 53.16 | 55.37 | 66.52 | 77.40 | 79.94 | 76.65 | 71.57 | 56.23 | 47.93 | 33.00 | 58.43 | |||||||||||||
1917 | 32.96 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.96 | k |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | 61.92 | d | 66.11 | m | 75.79 | b | 79.32 | 75.10 | 71.00 | 61.40 | a | 42.50 | 32.10 | 62.39 | d | |||||
1926 | 26.42 | 41.21 | 46.60 | a | 56.90 | 65.10 | 76.70 | 77.74 | 80.19 | 74.07 | c | 65.18 | c | 48.83 | 37.68 | 58.05 | ||||||||||
1927 | 44.30 | a | 44.54 | 46.60 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.15 | i | |
1928 | 40.12 | w | 42.18 | a | 51.57 | a | 57.33 | 66.10 | 77.29 | b | 79.52 | 75.71 | 73.66 | a | 65.68 | 37.83 | a | 33.42 | 60.02 | a | ||||||
1929 | 32.68 | 36.80 | c | 47.81 | 55.66 | a | 67.93 | a | 78.60 | 81.35 | ----- | z | ----- | z | ----- | z | 39.77 | 37.34 | b | 53.10 | c | |||||
1930 | 35.58 | 47.96 | ----- | z | ----- | z | 63.73 | a | ----- | z | 79.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.60 | h | |||
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | 59.87 | o | 68.42 | 79.80 | 84.06 | 84.39 | 76.80 | 61.23 | 51.45 | a | 35.23 | 67.67 | d | |||||||
1961 | 35.58 | 43.89 | 48.76 | b | 58.07 | 70.72 | b | 82.30 | 83.23 | 78.39 | 70.33 | c | 63.32 | 44.21 | a | 33.39 | 59.35 | |||||||||
1962 | 34.39 | 45.18 | 46.03 | 61.93 | 70.65 | 78.10 | 81.48 | 83.61 | 73.40 | 66.67 | a | 52.00 | 43.84 | 61.44 | ||||||||||||
1963 | 32.32 | 41.39 | 47.97 | 60.57 | 72.58 | 79.10 | 85.77 | 79.58 | 77.79 | a | 69.29 | 51.90 | 40.81 | 61.59 | ||||||||||||
1964 | 36.10 | 36.03 | 44.45 | 56.87 | 69.32 | 78.07 | a | 86.27 | a | 79.29 | 71.63 | 66.32 | 44.97 | 30.16 | 58.29 | |||||||||||
1965 | 33.45 | 37.71 | 43.53 | a | 58.13 | 66.87 | 75.00 | 82.00 | 78.71 | 68.37 | 65.84 | 52.93 | 40.42 | 58.58 | ||||||||||||
1966 | 32.13 | a | 32.59 | a | 53.42 | 60.97 | 72.77 | a | 77.27 | 84.84 | 79.90 | 76.40 | 64.16 | 53.70 | 38.87 | 60.58 | ||||||||||
1967 | 39.90 | 42.82 | 56.35 | 59.67 | 67.00 | 74.00 | 82.03 | a | 76.58 | 70.83 | 66.39 | 52.23 | 31.52 | 59.94 | ||||||||||||
1968 | 30.74 | 40.41 | 49.71 | 54.90 | 65.55 | 80.40 | 80.27 | a | 75.29 | 73.20 | 65.74 | 45.70 | 36.45 | 58.20 | ||||||||||||
1969 | 40.13 | 41.25 | 43.35 | 61.50 | 71.29 | 73.80 | 82.97 | 81.77 | 72.60 | 54.13 | 48.07 | 37.29 | 59.01 | |||||||||||||
1970 | 36.52 | 46.93 | 45.94 | 54.73 | 69.87 | 75.53 | 83.00 | 81.71 | 72.17 | 54.84 | 50.00 | 42.48 | 59.48 | |||||||||||||
1971 | 39.29 | 41.64 | 52.10 | 58.83 | 66.74 | 79.93 | 80.90 | 78.52 | 71.13 | 59.52 | 45.37 | 32.23 | 58.85 | |||||||||||||
1972 | 34.67 | a | 43.90 | 55.71 | 60.60 | 67.90 | 78.90 | a | 81.35 | 79.19 | 72.13 | 58.94 | 35.47 | 29.74 | 58.21 | |||||||||||
1973 | 28.10 | 34.11 | 42.39 | 50.80 | 65.13 | 76.00 | 80.19 | 80.39 | c | 71.48 | a | 64.00 | 51.37 | 38.71 | 56.89 | |||||||||||
1974 | 29.39 | 32.93 | 53.21 | c | 55.97 | 73.16 | 79.53 | 81.10 | 76.35 | 71.63 | 61.64 | c | 46.18 | b | 32.06 | 57.76 | ||||||||||
1975 | 27.16 | 36.75 | 44.96 | c | 52.20 | 64.65 | 75.90 | a | 80.48 | 79.61 | 69.96 | e | ----- | z | 33.59 | m | 33.96 | h | 59.07 | c | ||||||
1976 | 32.97 | 44.55 | 46.97 | 56.54 | b | 66.61 | 76.60 | 81.72 | b | 77.84 | 71.13 | 57.90 | 47.27 | 35.55 | 57.97 | |||||||||||
1977 | 32.39 | 41.39 | 44.90 | 59.33 | 68.97 | b | 80.43 | 81.32 | 80.55 | 74.33 | 65.42 | 48.40 | 42.87 | 60.03 | ||||||||||||
1978 | 39.52 | 41.75 | 53.35 | 61.40 | 63.45 | 79.63 | 83.39 | 81.48 | 75.12 | d | 67.26 | 50.10 | 31.90 | 60.70 | ||||||||||||
1979 | 26.48 | 31.57 | 41.13 | h | 58.17 | 64.74 | 76.46 | b | 83.13 | 78.00 | a | 76.80 | 64.87 | 39.13 | 38.55 | 57.99 | a | |||||||||
1980 | 36.29 | 44.24 | 45.29 | 53.90 | 63.03 | 81.72 | a | 86.17 | a | 80.94 | 75.70 | 60.77 | 50.83 | a | 49.26 | 60.68 | ||||||||||
1981 | 44.87 | 47.43 | 48.35 | h | 64.87 | 65.55 | 80.57 | 81.81 | 77.05 | i | ----- | z | 60.55 | 54.77 | h | 47.27 | p | 63.66 | e | |||||||
1982 | 37.08 | e | 40.15 | a | 48.35 | 57.53 | 65.35 | 75.70 | 81.55 | 78.27 | a | 69.13 | 58.10 | 46.10 | 36.00 | 57.78 | ||||||||||
1983 | 37.19 | o | 40.61 | 46.81 | 51.40 | 62.74 | 72.87 | 81.52 | 81.61 | 76.50 | 63.39 | 47.00 | 32.90 | 59.76 | a | |||||||||||
1984 | 25.90 | 33.76 | 42.35 | 54.43 | 72.74 | 76.07 | 82.61 | 79.52 | 74.20 | 53.10 | 49.37 | 39.77 | 56.99 | |||||||||||||
1985 | 35.32 | 39.61 | 48.74 | 60.97 | 66.79 | b | 78.61 | l | 81.48 | d | 82.71 | 69.13 | 62.00 | 45.43 | 38.26 | 57.31 | a | |||||||||
1986 | 45.68 | 46.22 | a | 56.06 | 59.27 | 66.71 | 75.87 | 79.57 | c | 81.26 | d | 69.70 | 57.97 | 48.41 | a | 38.46 | c | 60.43 | ||||||||
1987 | 36.03 | 41.14 | 47.19 | 60.77 | 65.71 | 80.13 | 83.58 | 77.77 | a | 73.53 | 66.55 | 49.81 | i | 33.68 | 60.55 | a | ||||||||||
1988 | 27.10 | 39.38 | 47.48 | 62.33 | u | 66.81 | 78.80 | 82.71 | 79.97 | 72.17 | 67.39 | 46.90 | 38.13 | 58.80 | a | |||||||||||
1989 | 36.97 | 38.79 | 58.24 | b | 62.87 | 72.29 | 76.34 | a | 82.83 | a | 77.77 | 74.39 | b | 61.23 | 51.50 | 38.00 | d | 60.94 | ||||||||
1990 | 34.50 | a | 42.50 | 49.26 | 58.77 | 64.77 | 80.97 | 78.58 | 76.35 | 73.66 | a | 60.52 | 49.00 | 31.68 | 58.38 | |||||||||||
1991 | 28.55 | 42.29 | 46.65 | 57.17 | 67.45 | 76.23 | 79.10 | 78.13 | 72.50 | 64.94 | 36.56 | c | 22.90 | b | 56.04 | |||||||||||
1992 | 21.52 | 31.34 | 43.23 | 62.17 | 66.94 | 73.60 | 77.42 | 75.94 | 73.57 | 65.29 | 38.10 | a | 27.52 | 54.72 | ||||||||||||
1993 | 32.06 | 35.61 | 48.61 | 56.83 | 66.10 | 76.00 | 81.32 | 74.84 | 70.33 | 58.68 | 43.77 | 37.84 | 56.83 | |||||||||||||
1994 | 39.61 | 38.44 | a | 52.48 | 57.79 | b | 67.74 | 81.57 | 82.94 | 81.10 | k | 76.06 | n | 62.39 | 44.07 | 39.74 | 56.68 | b | ||||||||
1995 | 37.61 | 50.86 | 51.42 | 54.20 | 62.32 | 74.23 | 78.52 | 82.29 | 70.97 | 63.87 | 51.90 | 42.13 | a | 60.03 | ||||||||||||
1996 | 39.10 | a | 47.59 | 49.06 | 58.50 | 73.87 | 78.87 | 81.90 | 79.94 | 70.23 | 59.94 | 48.40 | 37.32 | 60.39 | ||||||||||||
1997 | 33.84 | 40.04 | 55.00 | 53.27 | 66.23 | 76.43 | 81.29 | 78.84 | 73.90 | 61.13 | 43.60 | 26.71 | 57.52 | |||||||||||||
1998 | 34.03 | 36.75 | 47.33 | a | 51.90 | 70.42 | 76.14 | a | 81.77 | 79.87 | 77.03 | 60.32 | 49.57 | 42.58 | 58.98 | |||||||||||
1999 | 43.06 | 47.29 | 55.68 | 55.73 | 63.35 | 75.10 | 79.37 | a | 76.97 | 70.97 | 65.06 | 57.03 | 40.19 | 60.82 | ||||||||||||
2000 | 43.45 | b | 47.03 | 51.29 | 62.03 | 71.48 | 78.93 | 83.23 | 81.42 | 75.70 | 60.39 | 41.37 | 39.87 | a | 61.35 | |||||||||||
2001 | 35.90 | 42.19 | a | 48.26 | 61.37 | 69.94 | 79.67 | 82.13 | 77.71 | 74.93 | 64.61 | 51.47 | 37.77 | 60.50 | ||||||||||||
2002 | 37.94 | 42.21 | 50.81 | 65.47 | 71.13 | 82.83 | 83.32 | 81.45 | b | 70.70 | 59.61 | 49.56 | e | 35.40 | a | 60.87 | ||||||||||
2003 | 46.23 | 41.21 | 49.70 | a | 61.19 | c | 70.06 | 73.83 | 86.57 | c | 80.53 | a | 72.00 | 65.90 | 49.32 | b | 40.39 | 61.41 | ||||||||
2004 | 34.71 | c | 33.39 | a | 55.42 | 56.83 | a | 71.29 | 64.70 | c | 79.58 | 74.10 | ----- | z | ----- | z | ----- | z | ----- | z | 58.75 | d | ||||
2005 | ----- | z | ----- | z | 47.21 | q | 59.92 | f | 69.90 | 78.83 | 87.13 | 80.45 | 75.87 | 62.74 | 51.90 | 40.77 | 68.45 | d | ||||||||
2006 | 40.45 | 44.71 | 50.29 | 63.14 | a | 73.53 | a | 82.10 | 80.45 | 77.97 | b | 72.86 | a | 61.07 | a | 53.04 | c | 38.00 | b | 61.47 | ||||||
2007 | 31.00 | 41.30 | a | 55.67 | d | 60.10 | 67.81 | 80.43 | b | 82.48 | h | 83.61 | h | 75.87 | g | 64.68 | c | 54.50 | j | 31.67 | a | 54.08 | d | |||
2008 | 31.09 | i | 38.41 | 51.33 | a | 61.66 | a | 70.00 | c | 83.48 | e | 86.87 | a | 82.52 | b | 75.79 | b | 64.33 | a | 52.72 | a | 38.30 | a | 64.13 | a | |
2009 | 38.40 | a | 47.81 | a | 54.40 | a | 57.97 | 72.32 | 76.73 | 87.32 | 86.40 | a | 74.71 | b | 58.62 | b | 52.87 | 34.65 | 61.85 | |||||||
2010 | 37.29 | 36.92 | c | 46.69 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.11 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 35.35 | 40.88 | 49.54 | 58.07 | 67.79 | 77.42 | 81.70 | 79.07 | 72.81 | 62.02 | 47.79 | 36.10 | 59.21 | |||||||||||||
S.D. | 5.37 | 4.62 | 4.23 | 3.40 | 3.19 | 3.10 | 2.59 | 2.56 | 2.46 | 3.72 | 4.71 | 4.90 | 1.77 | |||||||||||||
SKEW | -0.14 | -0.09 | 0.26 | -0.10 | 0.07 | -0.89 | 0.09 | 0.33 | 0.07 | -0.48 | -0.83 | -0.24 | -0.48 | |||||||||||||
MAX | 46.23 | 50.86 | 58.24 | 65.47 | 73.87 | 83.48 | 87.32 | 86.40 | 77.79 | 69.29 | 57.03 | 49.26 | 61.85 | |||||||||||||
MIN | 21.52 | 31.34 | 42.35 | 50.80 | 61.48 | 64.70 | 74.33 | 74.10 | 67.33 | 53.10 | 35.47 | 22.90 | 54.72 | |||||||||||||
YRS | 57 | 61 | 57 | 57 | 60 | 60 | 61 | 57 | 55 | 58 | 56 | 58 | 41 |