YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1896 | ----- | z | ----- | z | 35.68 | 40.73 | 46.84 | 71.09 | g | 74.29 | 73.39 | 64.30 | 55.00 | 38.27 | 42.38 | b | 52.32 | c | ||||||||
1897 | 34.23 | a | 34.04 | c | 31.57 | a | 48.73 | 63.13 | 66.03 | 71.74 | 74.55 | 69.48 | c | 54.42 | ----- | z | ----- | z | 54.79 | b | ||||||
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.62 | d | 33.55 | 41.58 | j | |
1900 | 36.84 | 35.21 | 47.03 | a | 50.13 | 64.42 | 79.30 | 80.42 | 78.52 | 64.50 | 54.13 | 45.43 | 35.03 | 55.91 | ||||||||||||
1901 | 33.87 | 36.00 | 39.06 | 49.97 | 65.39 | 74.76 | a | 89.27 | a | 83.81 | 73.00 | 72.37 | d | 48.00 | j | 37.84 | 59.58 | a | ||||||||
1902 | 35.94 | 43.96 | 36.61 | 51.83 | a | 62.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.20 | g | ||||
1903 | 36.53 | a | 27.82 | 45.03 | 57.21 | a | 66.52 | 83.23 | 83.33 | a | ----- | z | 71.83 | 61.77 | 51.00 | 37.10 | 56.49 | a | ||||||||
1904 | 33.87 | h | 42.10 | 47.06 | 60.57 | b | 69.84 | ----- | z | ----- | z | ----- | z | 66.43 | g | ----- | z | ----- | z | 35.31 | r | 54.89 | h | |||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | 30.33 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.63 | c | 36.52 | 37.57 | j | |
1907 | 30.97 | 41.32 | ----- | z | 52.30 | 58.70 | a | 66.03 | 81.71 | 77.13 | 68.90 | 61.32 | 42.72 | e | 34.67 | a | 55.98 | a | ||||||||
1908 | 31.93 | a | 36.62 | e | 43.39 | 57.28 | e | 59.13 | h | 65.79 | b | 77.40 | a | 73.90 | a | 66.32 | b | 50.67 | a | 41.23 | ----- | z | 54.45 | b | ||
1909 | 37.50 | g | ----- | z | ----- | z | ----- | z | 48.37 | a | 81.83 | a | 88.55 | i | 85.90 | b | 80.47 | 67.24 | b | 52.73 | h | 31.32 | c | 65.85 | f | |
1910 | 36.47 | a | 35.81 | a | 60.68 | 67.76 | a | ----- | z | ----- | z | ----- | z | 78.60 | u | 73.27 | 67.13 | 45.96 | b | ----- | z | 55.30 | e | |||
1911 | 41.55 | 33.96 | 47.81 | 53.63 | 67.77 | 78.97 | 80.94 | 82.03 | 70.63 | 59.23 | 40.83 | a | 33.63 | a | 57.58 | |||||||||||
1912 | 33.37 | a | 37.68 | a | 36.45 | 42.54 | b | 64.90 | b | 79.07 | a | 80.84 | 80.81 | 72.83 | 61.77 | a | 58.62 | a | 35.26 | 57.01 | ||||||
1913 | 37.54 | g | 56.79 | i | ----- | z | 63.97 | 74.52 | 70.77 | d | 76.07 | a | 75.23 | a | 74.12 | m | ----- | z | 37.43 | w | 30.59 | b | 65.19 | f | ||
1914 | 34.58 | 30.52 | a | 42.52 | 54.86 | a | 67.45 | 70.30 | 79.33 | d | 78.31 | e | 71.67 | 59.61 | 54.00 | 28.61 | 55.98 | |||||||||
1915 | 32.42 | 35.74 | a | 43.45 | 59.77 | 59.42 | 71.27 | 80.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.72 | e | ||||||
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 81.59 | b | 76.20 | a | 71.27 | 54.13 | 40.67 | 27.16 | 58.50 | f | ||||
1917 | 24.73 | a | 33.93 | 33.77 | 45.90 | 55.06 | 72.13 | 81.48 | 78.26 | 71.80 | 63.03 | a | 49.50 | b | 40.77 | 54.20 | ||||||||||
1918 | 31.85 | d | 36.54 | d | 47.23 | a | 49.50 | 60.16 | 77.91 | g | 75.39 | c | 75.03 | b | 70.59 | a | 57.50 | a | 40.07 | c | 32.29 | c | 52.38 | a | ||
1919 | 39.37 | a | 33.81 | a | 41.72 | b | 53.21 | b | 68.35 | e | 75.32 | k | ----- | z | 77.00 | h | 69.89 | k | 47.93 | d | 42.74 | c | 37.07 | a | 45.52 | d |
1920 | 43.64 | t | ----- | z | ----- | z | ----- | z | 62.68 | 74.63 | 83.77 | 77.67 | a | 66.79 | a | 48.10 | 36.40 | 30.58 | 60.08 | d | ||||||
1921 | 30.71 | 35.32 | 43.23 | 47.30 | 63.65 | 78.07 | 83.10 | 77.65 | 68.80 | 61.45 | 46.07 | 38.35 | 56.14 | |||||||||||||
1922 | 24.23 | 28.96 | 35.43 | a | 42.40 | 61.97 | a | 80.37 | 83.32 | 78.19 | 72.40 | 57.93 | b | 33.13 | 30.45 | 52.40 | ||||||||||
1923 | 29.10 | 25.38 | b | 30.71 | 41.31 | a | 58.19 | 67.97 | 78.10 | 72.84 | 64.00 | 45.68 | 37.80 | 27.35 | 48.20 | |||||||||||
1924 | 24.73 | a | 37.21 | 30.55 | 46.00 | 60.87 | 75.67 | 85.10 | 83.39 | 70.70 | 54.31 | b | 41.23 | 30.87 | 53.39 | |||||||||||
1925 | 30.68 | 37.68 | 43.97 | 54.97 | a | 67.84 | 71.21 | a | 85.45 | 77.87 | 67.10 | 53.42 | 39.57 | 34.58 | 55.36 | |||||||||||
1926 | 31.23 | 37.71 | 42.71 | 57.17 | 65.13 | 78.40 | 81.87 | 81.06 | 67.60 | 58.32 | 46.50 | 32.48 | 56.68 | |||||||||||||
1927 | 36.00 | 36.43 | 39.32 | 49.07 | 62.61 | 76.53 | 82.71 | 77.77 | 68.50 | 57.60 | a | 42.97 | 31.69 | r | 57.23 | a | ||||||||||
1928 | 35.68 | 35.21 | 42.71 | 50.70 | 66.81 | 73.79 | f | 81.74 | l | 80.56 | f | 72.13 | 56.23 | 42.43 | 33.55 | 48.38 | c | |||||||||
1929 | 28.46 | e | 26.35 | b | 38.76 | b | 46.47 | 64.23 | 75.90 | 82.81 | 80.61 | 64.37 | 56.70 | a | 41.33 | 40.65 | 53.89 | |||||||||
1930 | 27.14 | c | 38.79 | 40.58 | 60.63 | 62.90 | 75.95 | k | 81.07 | p | 78.10 | a | 69.73 | 52.90 | a | 46.33 | 32.70 | a | 50.98 | b | ||||||
1931 | 36.19 | 40.32 | 43.97 | 56.67 | 65.39 | c | 79.03 | 88.55 | 83.40 | a | 72.64 | b | 61.52 | d | 40.41 | c | 32.80 | a | 58.41 | |||||||
1932 | 27.04 | c | 36.31 | c | 36.07 | d | 52.00 | c | ----- | z | ----- | z | 82.73 | a | 81.77 | a | 74.90 | 57.90 | b | 48.55 | a | 26.03 | a | 52.33 | b | |
1933 | 29.43 | c | 30.17 | d | 41.21 | b | 48.57 | b | 57.55 | b | 81.10 | 86.35 | 80.43 | c | 76.33 | c | 66.53 | a | 50.00 | d | 40.79 | b | 57.37 | |||
1934 | 34.17 | b | 42.61 | 53.27 | a | 62.13 | 75.36 | c | 74.93 | c | 86.48 | 82.87 | a | 70.52 | a | 64.96 | e | 46.17 | f | 33.50 | a | 61.89 | a | |||
1935 | 37.52 | b | 38.81 | b | 38.46 | c | 52.04 | c | 56.83 | a | 77.03 | a | 85.13 | 81.61 | 74.14 | b | 58.86 | c | 39.96 | b | 36.38 | b | 56.40 | |||
1936 | 33.07 | d | 34.59 | b | 39.41 | b | 57.71 | b | 68.03 | 77.83 | a | 83.32 | 81.13 | 70.37 | 57.13 | 46.63 | 33.84 | 56.92 | ||||||||
1937 | 20.54 | e | 34.29 | 38.93 | d | 47.54 | d | 66.04 | g | 72.52 | a | 82.97 | a | 83.39 | 74.67 | 61.07 | b | 47.59 | c | 39.10 | a | 54.78 | a | |||
1938 | 38.93 | b | 38.78 | a | 42.29 | c | 56.14 | a | 63.80 | a | 79.45 | a | 83.71 | 81.61 | 75.37 | 59.13 | 36.39 | g | 35.20 | a | 59.49 | a | ||||
1939 | 32.07 | b | 26.11 | a | 42.48 | b | 58.63 | c | 66.72 | b | 73.46 | b | 82.77 | 81.81 | 69.60 | 57.41 | b | 52.53 | 43.07 | a | 57.22 | |||||
1940 | 32.90 | 36.41 | 45.45 | b | 54.31 | d | 70.74 | 80.90 | 85.52 | 84.48 | 69.97 | a | 60.45 | 39.35 | d | 36.84 | 58.11 | |||||||||
1941 | 34.10 | b | 39.74 | a | 43.45 | 47.70 | 66.64 | c | 71.03 | 82.07 | a | 77.17 | a | 64.86 | b | 53.43 | c | 44.59 | a | 36.41 | d | 55.10 | ||||
1942 | 32.89 | c | 28.74 | a | 37.26 | 53.59 | a | 59.45 | 73.41 | a | 84.87 | 81.23 | 72.27 | 59.50 | a | 43.67 | c | 37.23 | 55.34 | |||||||
1943 | 34.33 | d | 37.88 | b | 41.64 | c | 60.47 | 61.19 | 70.86 | b | 82.77 | 79.73 | a | 75.43 | 58.97 | a | 47.38 | a | 36.07 | b | 57.23 | |||||
1944 | 30.87 | 32.41 | 37.68 | c | 46.67 | 63.94 | 68.40 | 83.06 | 82.35 | 74.79 | b | 65.20 | a | 39.50 | d | 36.13 | 55.08 | |||||||||
1945 | 34.90 | a | 34.96 | 41.52 | d | 47.74 | c | 64.53 | a | 65.07 | a | 81.74 | 78.74 | 68.10 | a | 62.86 | c | 41.71 | f | 31.55 | b | 55.61 | a | |||
1946 | 32.31 | e | 33.18 | 48.67 | a | 67.07 | 66.13 | 80.83 | 85.57 | a | 83.65 | 78.29 | b | 54.69 | b | 44.11 | b | 46.79 | b | 60.11 | ||||||
1947 | 35.61 | c | 43.14 | 46.63 | a | 53.32 | b | 70.03 | b | 68.43 | b | 82.74 | 79.40 | a | 75.22 | c | 63.43 | c | 36.64 | b | 34.27 | a | 57.41 | |||
1948 | 36.08 | f | 35.76 | d | 35.82 | c | 54.48 | c | 69.79 | b | 78.85 | j | 83.20 | a | ----- | z | 77.00 | 65.55 | 43.14 | p | 38.19 | 57.47 | d | |||
1949 | 24.86 | c | ----- | z | ----- | z | 60.36 | e | 63.84 | 72.00 | f | 82.93 | d | 83.04 | e | 74.50 | f | 54.88 | e | 53.41 | c | 35.71 | c | 57.38 | d | |
1950 | 31.40 | k | 37.00 | g | 41.19 | j | ----- | z | 60.94 | 73.53 | 79.13 | 78.39 | 66.33 | 67.48 | h | 48.89 | k | 45.05 | l | 71.66 | g | |||||
1951 | ----- | z | 44.32 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.50 | w | 74.43 | 56.03 | 42.37 | 31.74 | 51.14 | h | ||||
1952 | 31.84 | 34.41 | 35.43 | a | 53.57 | 66.90 | 75.27 | 81.94 | 81.21 | b | 76.56 | c | 70.84 | 42.17 | a | 38.00 | t | 59.10 | a | |||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | 64.56 | v | 70.00 | o | 80.15 | e | 82.37 | d | 67.67 | f | 52.96 | e | 38.87 | 32.07 | a | 57.28 | g | |
1983 | 38.83 | a | 37.54 | b | 41.94 | 46.04 | b | 59.11 | c | 72.38 | a | 83.55 | b | 80.19 | 71.00 | b | 60.97 | a | 42.00 | a | 30.07 | c | 55.30 | |||
1984 | 31.90 | 36.46 | a | 40.52 | b | 47.97 | 66.38 | b | 72.00 | a | 81.45 | b | 79.07 | b | 71.39 | b | ----- | z | ----- | z | ----- | z | 58.57 | c | ||
1985 | ----- | z | ----- | z | ----- | z | ----- | z | 65.32 | c | 76.62 | a | 80.66 | b | 80.64 | c | 66.38 | f | 57.62 | e | 36.14 | b | 32.84 | 61.41 | e | |
1986 | 40.03 | a | 38.38 | b | 50.41 | b | 52.62 | d | 63.57 | c | 78.20 | e | 78.07 | a | 81.62 | b | 63.93 | b | 56.37 | a | 43.38 | a | 37.63 | d | 57.02 | |
1987 | ----- | z | 38.25 | d | 41.08 | e | 62.04 | e | 64.17 | a | 75.04 | d | 79.88 | e | 76.90 | a | 71.93 | b | 62.93 | d | 42.00 | b | 30.90 | b | 58.65 | a |
1988 | 31.87 | a | 37.79 | a | 41.14 | c | 56.78 | c | 66.13 | h | 79.92 | e | 84.74 | d | 81.93 | d | 71.35 | g | 65.68 | i | 39.43 | i | 31.71 | c | 55.73 | d |
1989 | 33.21 | b | 33.32 | 47.86 | b | 59.00 | a | 64.44 | d | 72.57 | b | 86.13 | a | 78.92 | e | 73.88 | m | 59.67 | a | 47.27 | d | 36.35 | e | 56.25 | a | |
1990 | 35.48 | b | 33.88 | c | 47.83 | b | 57.93 | c | 61.14 | c | 75.62 | q | 83.09 | t | 79.48 | f | 75.43 | 61.72 | b | 40.79 | p | 22.58 | e | 49.50 | d | |
1991 | 30.47 | a | 44.46 | 42.15 | d | 60.20 | t | 56.47 | a | 73.57 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.42 | g | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 32.71 | 35.71 | 41.69 | 53.25 | 63.61 | 74.62 | 82.14 | 79.75 | 71.12 | 58.77 | 43.71 | 34.47 | 55.91 | |||||||||||||
S.D. | 4.33 | 4.33 | 5.59 | 6.33 | 5.22 | 4.68 | 3.32 | 3.01 | 3.93 | 5.36 | 5.19 | 4.41 | 2.29 | |||||||||||||
SKEW | -0.52 | -0.39 | 0.55 | 0.13 | -0.76 | -0.25 | -0.73 | -0.37 | -0.05 | 0.08 | 0.60 | 0.09 | -1.40 | |||||||||||||
MAX | 41.55 | 44.46 | 60.68 | 67.76 | 75.36 | 83.23 | 89.27 | 85.90 | 80.47 | 72.37 | 58.62 | 46.79 | 60.11 | |||||||||||||
MIN | 20.54 | 25.38 | 30.55 | 40.73 | 46.84 | 65.07 | 71.74 | 72.84 | 63.93 | 45.68 | 33.13 | 22.58 | 48.20 | |||||||||||||
YRS | 51 | 53 | 53 | 55 | 55 | 48 | 53 | 52 | 52 | 55 | 49 | 54 | 26 |