YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | 32.65 | e | 26.61 | a | 32.58 | a | 36.10 | 45.78 | a | 59.55 | a | ----- | z | ----- | z | ----- | z | 46.62 | j | 32.98 | e | 32.19 | 37.31 | d | ||
1894 | 24.50 | j | 21.26 | c | 31.67 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.47 | j |
1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1896 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | 26.36 | 37.52 | a | 40.13 | 48.23 | 61.00 | a | 64.31 | b | 64.82 | a | 57.82 | 42.05 | c | 38.30 | 27.90 | a | 46.22 | a | |||||
1906 | 32.02 | a | 31.56 | b | 30.82 | c | 43.07 | a | 51.68 | 57.05 | a | 60.03 | 60.81 | 54.37 | 44.44 | 34.07 | 34.66 | 44.55 | ||||||||
1907 | 30.37 | 38.46 | 40.37 | 40.32 | 43.10 | 56.12 | 63.15 | 62.05 | a | 55.28 | 47.89 | 35.73 | 29.37 | a | 45.18 | |||||||||||
1908 | 28.95 | 30.40 | 37.73 | a | 43.58 | 46.71 | 56.80 | 62.87 | 61.44 | 57.53 | 41.79 | 32.75 | 29.42 | 44.16 | ||||||||||||
1909 | 32.55 | 27.54 | 31.48 | 36.10 | 45.60 | 58.62 | 64.45 | 64.03 | 54.53 | 48.00 | 38.97 | 21.82 | 43.64 | |||||||||||||
1910 | 28.56 | 26.46 | 42.84 | 44.19 | a | 49.02 | a | 59.77 | 65.79 | 63.48 | 57.45 | a | 47.94 | 39.62 | a | 31.31 | 46.37 | |||||||||
1911 | 32.11 | 23.63 | b | 38.78 | a | 42.07 | b | 52.00 | c | 60.96 | c | 61.42 | 62.36 | c | 58.08 | f | 43.58 | f | 29.25 | r | 24.04 | d | 44.15 | c | ||
1912 | 29.66 | c | 27.98 | d | 27.22 | h | 39.17 | c | 48.77 | 55.52 | 61.61 | c | 62.30 | a | 49.95 | 44.20 | a | 38.73 | 25.48 | a | 43.94 | a | ||||
1913 | 24.55 | a | 23.04 | a | 31.34 | 41.81 | a | 51.33 | a | 58.20 | 63.48 | 64.90 | 51.93 | a | 41.47 | a | 38.82 | 22.76 | 42.80 | |||||||
1914 | 32.02 | 26.81 | a | 33.97 | 40.64 | a | 50.39 | 59.47 | a | 63.10 | 62.95 | a | 57.45 | 46.31 | 40.40 | 22.55 | 44.67 | |||||||||
1915 | 26.10 | a | 30.89 | 29.27 | 44.38 | 45.16 | b | 54.85 | c | 61.83 | b | 58.84 | 54.48 | b | 46.96 | c | 35.93 | b | 29.52 | e | 43.18 | |||||
1916 | 23.17 | d | 32.53 | 38.98 | a | 41.73 | 48.11 | ----- | z | 64.25 | c | 60.89 | c | 53.98 | a | 42.11 | 31.10 | a | 21.58 | 41.68 | a | |||||
1917 | 23.56 | 28.69 | a | 27.25 | a | 37.19 | a | 41.41 | b | 56.93 | b | 63.69 | b | 60.20 | c | 57.05 | 45.95 | a | 39.97 | 35.27 | 43.10 | |||||
1918 | 23.19 | 31.75 | 40.40 | a | 36.16 | a | 49.40 | 62.95 | 63.10 | 63.06 | 54.41 | a | 47.58 | 32.52 | 26.05 | i | 45.87 | a | ||||||||
1919 | 29.45 | 27.62 | 33.53 | b | 42.97 | 50.95 | 59.30 | 66.48 | 64.71 | 58.72 | a | 41.76 | 33.52 | 31.34 | 45.03 | |||||||||||
1920 | 33.55 | 30.33 | 32.75 | a | 33.95 | 49.98 | 57.48 | 63.97 | 59.19 | 53.10 | 43.35 | 31.28 | 27.00 | 43.00 | ||||||||||||
1921 | 29.53 | 30.82 | 39.52 | b | 37.78 | a | 49.32 | a | 56.40 | 60.73 | 59.34 | 55.83 | 48.10 | 36.25 | 32.15 | 44.65 | ||||||||||
1922 | 20.47 | 23.75 | 30.60 | 37.02 | 48.52 | a | 59.30 | 60.44 | 60.66 | 54.48 | 42.94 | 30.27 | 27.92 | 41.36 | ||||||||||||
1923 | 29.08 | 23.68 | 27.26 | 38.45 | 44.91 | i | 55.03 | a | 61.03 | b | 57.32 | 51.07 | 36.21 | 31.03 | 24.90 | 39.55 | a | |||||||||
1924 | 22.92 | 30.48 | 22.65 | 37.17 | 43.65 | 57.72 | 60.73 | 62.55 | 52.02 | 43.52 | 35.07 | 23.89 | 41.03 | |||||||||||||
1925 | 23.89 | 32.27 | 35.40 | 42.75 | 49.95 | 54.97 | 60.27 | 57.73 | 52.77 | 38.65 | a | 31.87 | 27.39 | 42.32 | ||||||||||||
1926 | 23.74 | 30.86 | 28.77 | 39.48 | 48.97 | 55.57 | 57.29 | 59.92 | 53.23 | 45.60 | 34.75 | 25.53 | a | 41.98 | ||||||||||||
1927 | 28.23 | 27.79 | 29.84 | b | 39.33 | 50.33 | a | 55.77 | 59.66 | b | 55.42 | a | 51.90 | 43.90 | 38.82 | 20.73 | 41.81 | |||||||||
1928 | 29.69 | 25.41 | 32.92 | 37.18 | 48.97 | 53.80 | 60.13 | 59.95 | 54.68 | 44.27 | 32.60 | 23.29 | 41.91 | |||||||||||||
1929 | 22.66 | 18.23 | 31.06 | 37.80 | 46.81 | 57.58 | 60.47 | 60.60 | 50.95 | 42.40 | 26.73 | 29.58 | 40.41 | |||||||||||||
1930 | 15.67 | a | 33.62 | 27.28 | a | 44.72 | 45.84 | 58.17 | 61.89 | 59.61 | 53.77 | 43.16 | 32.97 | 24.05 | 41.73 | |||||||||||
1931 | 27.10 | 29.18 | 29.24 | 38.85 | 45.92 | 59.20 | 64.03 | 61.32 | a | 57.92 | 45.77 | 30.48 | 26.44 | 42.95 | ||||||||||||
1932 | 20.18 | 31.14 | 27.26 | 41.90 | 49.47 | 56.17 | 61.10 | 61.52 | 54.02 | 42.08 | 36.10 | 19.00 | 41.66 | |||||||||||||
1933 | 28.74 | j | 20.41 | 34.15 | 37.10 | 43.94 | 59.85 | 64.05 | 59.81 | 57.02 | 46.06 | 37.57 | 35.55 | a | 45.04 | a | ||||||||||
1934 | 28.40 | 30.09 | 37.34 | 42.72 | 53.53 | 58.55 | 65.00 | a | 61.32 | c | 53.83 | c | 47.95 | 35.32 | 28.57 | a | 45.22 | |||||||||
1935 | 29.98 | a | 30.21 | b | 33.35 | 39.55 | b | 40.79 | c | 56.61 | b | 61.48 | a | 62.85 | 55.07 | b | 42.43 | b | 31.27 | b | 26.97 | 42.55 | ||||
1936 | 25.08 | g | 24.13 | f | 33.58 | a | 42.15 | c | 49.45 | 58.31 | a | 62.71 | 61.03 | a | 54.55 | 41.08 | a | 32.86 | b | 27.57 | b | 46.33 | b | |||
1937 | 15.29 | c | 26.00 | d | 29.00 | 38.41 | b | 48.68 | c | 54.86 | b | 60.24 | b | 62.67 | a | 53.36 | a | ----- | z | 37.50 | f | 30.97 | 41.95 | b | ||
1938 | 29.02 | 31.32 | 37.26 | 42.18 | 48.15 | 58.60 | a | 62.92 | 65.07 | a | 56.37 | 48.37 | a | 31.55 | a | 30.29 | 45.09 | |||||||||
1939 | 28.39 | 21.54 | a | 34.63 | 43.05 | i | 52.26 | 58.22 | 66.74 | 62.85 | 59.15 | 47.55 | a | 38.65 | 35.92 | 45.99 | a | |||||||||
1940 | 23.23 | 28.65 | b | 36.66 | 41.58 | 50.97 | 61.09 | a | 64.45 | 62.26 | 56.50 | 48.35 | a | 33.02 | 33.25 | c | 45.00 | |||||||||
1941 | ----- | z | 31.25 | 29.52 | b | ----- | z | ----- | z | ----- | z | ----- | z | 61.29 | c | 53.61 | h | 44.43 | b | 38.17 | 29.55 | b | 39.03 | f | ||
1942 | ----- | z | ----- | z | 30.48 | 42.55 | 48.10 | 56.52 | 63.68 | a | 63.77 | e | 54.02 | 45.84 | b | 39.89 | b | 32.27 | 47.71 | b | ||||||
1943 | 29.53 | a | 32.98 | 32.75 | c | 47.48 | b | 46.81 | 57.90 | 64.24 | 63.26 | 55.00 | 45.65 | 36.85 | 29.08 | 45.13 | ||||||||||
1944 | 26.79 | 25.98 | 30.32 | 36.10 | a | 48.63 | 56.88 | a | 61.76 | 63.90 | 55.43 | 46.45 | 33.83 | 25.98 | 42.67 | |||||||||||
1945 | 28.31 | 29.88 | 33.89 | 35.48 | 48.94 | 53.02 | 61.89 | 61.16 | 51.75 | 46.76 | 35.34 | a | 23.70 | a | 42.51 | |||||||||||
1946 | 25.81 | 29.45 | 37.97 | 47.88 | 45.22 | a | 58.22 | 63.24 | 61.65 | 55.27 | 42.55 | 30.60 | a | 31.78 | a | 44.14 | ||||||||||
1947 | 24.60 | 26.80 | a | 31.08 | 38.75 | 49.97 | 53.87 | 62.15 | 61.30 | a | 56.37 | 47.56 | 27.97 | a | 25.42 | 42.15 | ||||||||||
1948 | 23.92 | a | 23.32 | a | 25.57 | a | 41.33 | a | 48.65 | 55.67 | 61.66 | 61.06 | 55.82 | 42.44 | 29.77 | 24.55 | 41.14 | |||||||||
1949 | 16.68 | 25.73 | 34.50 | 43.87 | 49.21 | 56.23 | 61.06 | 60.19 | b | 54.28 | 43.13 | a | 42.77 | 27.15 | 42.90 | |||||||||||
1950 | 25.27 | 31.82 | 33.71 | 41.52 | 46.21 | 56.72 | 59.29 | 57.45 | 51.93 | a | 51.20 | a | 36.05 | a | 33.87 | 43.75 | ||||||||||
1951 | 22.27 | 29.71 | 30.00 | 37.78 | 47.95 | 51.80 | 62.08 | a | 58.60 | 52.63 | 40.58 | 31.02 | 26.44 | 40.91 | ||||||||||||
1952 | 26.23 | 29.66 | a | 28.29 | 40.75 | 49.23 | 61.68 | 62.29 | 61.82 | 57.18 | 47.74 | 28.15 | 26.84 | 43.32 | ||||||||||||
1953 | 34.69 | 27.77 | 36.78 | b | 36.59 | a | 45.30 | a | 58.47 | 63.92 | 60.66 | 57.33 | 46.48 | 37.58 | 26.97 | a | 44.38 | |||||||||
1954 | 31.71 | 38.43 | 31.06 | 46.71 | a | 50.05 | 58.98 | 65.19 | 61.39 | 55.65 | 48.53 | a | 38.00 | 29.06 | 46.23 | |||||||||||
1955 | 25.15 | 23.93 | a | 31.50 | 41.62 | 49.27 | 54.72 | 62.81 | 62.05 | 53.98 | 45.65 | 32.80 | b | 31.24 | b | 42.89 | ||||||||||
1956 | 29.05 | a | 23.66 | 32.88 | a | ----- | z | ----- | z | ----- | z | 63.23 | i | 60.56 | 57.60 | 47.37 | 32.97 | a | 32.13 | 39.53 | d | |||||
1957 | 25.60 | 34.82 | 34.40 | a | 36.18 | 46.23 | 57.22 | 65.05 | 63.31 | 54.17 | 46.55 | b | 30.58 | 33.02 | 43.93 | |||||||||||
1958 | 27.82 | 34.68 | 27.95 | b | 37.28 | a | ----- | z | 59.55 | 62.05 | b | 63.37 | 55.28 | a | 46.55 | a | 36.58 | 34.24 | 44.12 | a | ||||||
1959 | 28.74 | 27.66 | 32.74 | 41.12 | a | 48.61 | 61.00 | 62.16 | 61.90 | 51.04 | b | 41.56 | 33.59 | a | 31.03 | 43.43 | ||||||||||
1960 | 24.47 | 19.48 | 32.89 | 41.90 | 47.58 | a | 57.77 | 61.23 | a | 59.96 | c | 54.32 | 45.37 | 37.00 | 28.12 | a | 42.51 | |||||||||
1961 | 28.52 | a | 30.24 | a | 32.90 | 39.30 | 49.77 | 57.10 | 61.23 | 60.61 | 48.40 | 44.13 | 29.95 | b | 24.35 | 42.21 | ||||||||||
1962 | 21.74 | 29.27 | 28.31 | 42.93 | 49.34 | f | 54.93 | c | 60.05 | 60.42 | 54.17 | i | 48.79 | c | 37.90 | 32.65 | 41.70 | b | ||||||||
1963 | 21.95 | 36.09 | e | 34.60 | f | 42.67 | a | 51.65 | 58.03 | 65.60 | a | 60.45 | 57.22 | 50.63 | 38.70 | 29.24 | 46.57 | a | ||||||||
1964 | 25.05 | 22.98 | 26.98 | 38.58 | 49.82 | 55.12 | 64.74 | 60.45 | a | 53.28 | 45.77 | 34.53 | 27.84 | 42.10 | ||||||||||||
1965 | 30.18 | 28.07 | 23.33 | a | 41.72 | a | 48.06 | 55.22 | 62.29 | 58.73 | 47.25 | 48.97 | 39.75 | d | 32.10 | a | 42.97 | |||||||||
1966 | 24.69 | d | 23.30 | a | 36.24 | 39.83 | 51.90 | 56.88 | 66.19 | 61.10 | 55.92 | 45.58 | 38.67 | g | 29.42 | a | 44.64 | a | ||||||||
1967 | 30.85 | 29.06 | a | 37.00 | g | 40.70 | 46.03 | a | 52.98 | c | 62.58 | 59.94 | 54.17 | 45.52 | 33.82 | 23.00 | 43.51 | a | ||||||||
1968 | 30.35 | ----- | z | ----- | z | ----- | z | ----- | z | 61.61 | k | ----- | z | 59.08 | 53.54 | c | 47.34 | b | 32.48 | g | 27.35 | a | 43.53 | g | ||
1969 | 33.34 | 29.45 | 26.69 | 43.91 | b | 50.42 | a | 52.03 | a | 63.04 | c | 63.87 | 54.97 | 36.98 | 34.67 | a | 29.53 | 43.24 | ||||||||
1970 | 28.90 | 32.82 | 29.15 | a | 35.88 | 50.12 | a | 56.37 | 62.29 | b | 62.18 | 50.63 | 37.69 | e | 34.73 | 30.32 | 42.59 | |||||||||
1971 | 29.63 | a | 26.82 | 33.47 | 39.30 | 46.74 | 57.78 | 60.75 | a | 60.35 | ----- | z | ----- | z | ----- | z | 25.68 | 42.28 | c | |||||||
1972 | 25.94 | 27.95 | 36.08 | 40.16 | a | 47.92 | 58.55 | 62.04 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.66 | e | |||||
1973 | 27.05 | c | 26.54 | c | 29.39 | d | ----- | z | 45.22 | d | 57.03 | a | 56.96 | q | 61.13 | ----- | z | ----- | z | 41.52 | ----- | z | 41.13 | e | ||
1974 | 31.55 | 39.07 | 41.95 | 44.10 | 56.73 | 62.08 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.91 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.91 | 28.49 | 32.53 | 40.36 | 48.36 | 57.32 | 62.55 | 61.28 | 54.46 | 44.91 | 34.80 | 28.27 | 43.20 | |||||||||||||
S.D. | 4.21 | 4.34 | 4.32 | 3.06 | 2.76 | 2.36 | 1.90 | 1.92 | 2.43 | 3.16 | 3.61 | 3.89 | 1.42 | |||||||||||||
SKEW | -0.64 | 0.08 | 0.20 | 0.21 | -0.21 | -0.03 | 0.05 | -0.30 | -0.52 | -0.62 | 0.00 | -0.10 | 0.27 | |||||||||||||
MAX | 34.69 | 39.07 | 42.84 | 47.88 | 56.73 | 62.95 | 66.74 | 65.07 | 59.15 | 51.20 | 42.77 | 35.92 | 46.37 | |||||||||||||
MIN | 15.29 | 18.23 | 22.65 | 33.95 | 40.79 | 51.80 | 57.29 | 55.42 | 47.25 | 36.21 | 26.73 | 19.00 | 40.41 | |||||||||||||
YRS | 66 | 69 | 68 | 66 | 65 | 67 | 65 | 68 | 63 | 64 | 64 | 67 | 47 |