YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1892 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.00 | 40.00 | k | |
1893 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1894 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.90 | 37.90 | k | |
1895 | 34.19 | 32.46 | 34.94 | 43.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.18 | h | ||||
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 | 57.00 | 45.22 | d | 36.48 | c | 29.35 | 42.01 | h | ||
1900 | 29.69 | e | 32.43 | 40.52 | 38.33 | 48.68 | 59.00 | ----- | z | 61.35 | 56.67 | 46.87 | 38.30 | 27.10 | 43.54 | a | ||||||||||
1901 | ----- | z | 32.43 | 31.39 | 38.97 | 44.45 | 51.90 | 67.16 | 63.48 | 60.53 | 45.03 | b | 37.27 | 27.52 | 45.47 | a | ||||||||||
1902 | 29.55 | 31.08 | p | 32.10 | 41.27 | 43.23 | a | 59.87 | 62.23 | 63.87 | 58.27 | 49.13 | 36.50 | ----- | z | 47.60 | b | |||||||||
1903 | 31.41 | i | 29.43 | 34.81 | 41.40 | 49.19 | 56.63 | 65.06 | 64.16 | ----- | z | 45.87 | 36.07 | 29.26 | 45.19 | b | ||||||||||
1904 | 22.39 | 33.62 | 35.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.53 | i | |||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.40 | 66.42 | 64.32 | 56.17 | 42.48 | 35.63 | 30.68 | 50.44 | e | |||||||
1910 | 31.39 | 29.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.44 | j | ||
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.32 | 29.32 | k | |
1914 | 31.03 | 31.00 | 37.94 | 41.80 | 47.06 | 59.87 | 63.77 | 63.16 | 56.07 | a | 44.97 | 40.34 | a | 30.48 | 45.62 | |||||||||||
1915 | 29.68 | 33.25 | 34.35 | 39.80 | 43.35 | 56.97 | 64.26 | 63.94 | 53.30 | 43.26 | 33.93 | 28.57 | a | 43.72 | ||||||||||||
1916 | 34.27 | a | 36.52 | 39.29 | 42.11 | c | 46.45 | ----- | z | 62.85 | k | 59.74 | l | 55.80 | 44.42 | 29.80 | 24.65 | 39.26 | c | |||||||
1917 | 30.83 | a | 28.11 | 29.61 | 39.00 | a | 43.29 | 56.50 | 64.81 | 61.60 | a | 58.07 | 45.65 | 34.40 | 28.65 | 43.38 | ||||||||||
1918 | 26.45 | 32.79 | 39.74 | 40.53 | 45.35 | 62.33 | 63.52 | 60.87 | 57.60 | 45.60 | a | 35.03 | 28.58 | 44.87 | ||||||||||||
1919 | 25.19 | 28.54 | 33.13 | 42.27 | 48.16 | 56.43 | 63.90 | 63.06 | 55.40 | 41.77 | 35.14 | a | 31.00 | 43.67 | ||||||||||||
1920 | 31.27 | a | 34.90 | 33.93 | a | 36.10 | 47.06 | 55.97 | 64.74 | 60.35 | 54.17 | 41.45 | 32.50 | 23.41 | b | 42.99 | ||||||||||
1921 | 27.19 | 27.77 | b | 35.83 | y | 39.23 | 45.71 | 55.13 | 63.90 | 60.48 | 56.70 | 45.61 | 34.14 | a | 33.10 | a | 44.45 | a | ||||||||
1922 | 26.59 | d | 30.11 | 28.90 | 36.67 | c | 47.90 | 57.20 | 63.16 | 62.68 | 56.97 | 45.13 | 29.62 | a | 30.03 | 42.91 | ||||||||||
1923 | 30.43 | a | 28.71 | 31.45 | 39.60 | 47.84 | 52.73 | 62.74 | 59.74 | 51.77 | 37.13 | a | 34.77 | 30.24 | b | 42.26 | ||||||||||
1924 | 22.81 | 26.07 | 28.52 | 35.47 | 46.03 | 58.40 | 63.19 | 61.61 | 56.53 | 40.61 | 32.07 | 27.97 | 41.61 | |||||||||||||
1925 | 21.61 | 30.32 | 34.06 | 39.03 | 49.39 | 57.90 | 64.00 | 59.87 | 53.47 | 45.94 | 31.93 | 30.48 | 43.17 | |||||||||||||
1926 | 27.93 | d | 35.93 | a | 41.65 | 46.20 | 52.10 | 60.53 | 65.97 | 65.00 | 61.77 | 51.48 | 39.83 | 35.81 | 48.68 | |||||||||||
1927 | 36.74 | 39.04 | 37.73 | a | 44.37 | 52.48 | 61.00 | 67.29 | 63.16 | 59.17 | 48.06 | 43.37 | 30.74 | 48.60 | ||||||||||||
1928 | 32.00 | 33.97 | 40.58 | 44.03 | 54.58 | 62.20 | 66.61 | 64.32 | 58.13 | 50.00 | 37.70 | 30.87 | 47.92 | |||||||||||||
1929 | 29.77 | 32.48 | a | 35.07 | a | 43.33 | 51.84 | 60.77 | 66.55 | 64.23 | 61.17 | 48.81 | 34.53 | 33.48 | 46.84 | |||||||||||
1930 | 34.90 | 36.39 | 39.10 | 47.57 | 48.33 | a | 62.03 | 65.58 | 63.77 | 56.83 | 46.42 | 39.27 | 30.60 | a | 47.57 | |||||||||||
1931 | 30.67 | a | 36.48 | e | 38.53 | a | 47.50 | 53.16 | 62.50 | 66.87 | 63.84 | 60.83 | 49.48 | 39.46 | d | 31.96 | c | 48.44 | ||||||||
1932 | 27.28 | b | 38.43 | a | 39.71 | 44.03 | 51.10 | 59.50 | 66.13 | 65.68 | 59.00 | 48.42 | 38.50 | 32.32 | 47.51 | |||||||||||
1933 | 30.94 | 29.54 | 38.23 | 42.23 | 47.48 | 63.37 | 67.65 | 66.06 | 63.17 | 52.37 | a | 39.89 | b | 34.64 | c | 47.96 | ||||||||||
1934 | 29.86 | b | 38.73 | b | 42.90 | 49.69 | a | 58.03 | 60.33 | 68.13 | 65.06 | 60.17 | 50.72 | b | 40.31 | a | 36.15 | e | 50.01 | |||||||
1935 | 34.72 | f | 37.29 | 38.45 | 45.73 | 48.87 | 62.30 | 68.61 | 64.58 | 59.30 | 48.74 | 37.70 | 34.41 | b | 49.64 | a | ||||||||||
1936 | 31.66 | b | 35.79 | a | 42.19 | 45.86 | a | 55.10 | 62.80 | 68.06 | 65.26 | 58.67 | 48.61 | 39.37 | c | 34.03 | 48.95 | |||||||||
1937 | 26.52 | 34.36 | 37.87 | 43.90 | 53.27 | a | 60.20 | 66.90 | 66.39 | 61.50 | 50.03 | 38.89 | b | 36.07 | d | 47.99 | ||||||||||
1938 | 33.68 | 35.96 | e | 39.10 | a | 45.27 | 50.84 | 62.53 | 65.30 | a | 63.63 | a | 60.07 | 50.10 | 34.60 | 34.62 | b | 47.97 | ||||||||
1939 | 31.00 | 26.29 | 37.94 | 45.10 | 52.19 | 62.83 | 66.03 | 64.23 | 59.97 | 46.35 | 42.43 | 36.65 | 47.58 | |||||||||||||
1940 | 33.71 | 35.48 | 44.00 | 51.40 | 56.45 | 62.93 | 67.06 | 63.19 | 60.67 | 50.00 | 37.20 | 39.13 | 50.10 | |||||||||||||
1941 | 34.74 | 38.54 | 38.42 | 40.83 | 51.87 | 58.13 | 66.48 | 63.81 | 59.83 | 48.19 | 39.50 | 32.97 | 47.78 | |||||||||||||
1942 | 33.03 | 32.54 | 34.68 | 43.97 | 50.03 | 60.27 | 67.90 | 65.19 | 61.20 | 49.39 | 41.83 | 34.87 | 47.91 | |||||||||||||
1943 | 34.70 | a | 37.35 | b | 41.77 | 48.67 | 54.06 | 63.63 | 66.97 | 65.48 | 60.80 | 49.71 | 39.28 | a | 34.77 | 49.77 | ||||||||||
1944 | 30.52 | 33.38 | 38.68 | 42.50 | 51.58 | 57.17 | 66.32 | 65.71 | 59.97 | 50.77 | 32.97 | 27.68 | 46.44 | |||||||||||||
1945 | 28.42 | 29.71 | 32.19 | 36.20 | 44.58 | 47.80 | 64.94 | 63.26 | 55.00 | 45.19 | 28.60 | 25.81 | 41.81 | |||||||||||||
1946 | 26.06 | 23.11 | 32.39 | 43.30 | 41.70 | a | 53.77 | 61.87 | 62.32 | 58.27 | 39.74 | 26.93 | 27.58 | 41.42 | ||||||||||||
1947 | 25.74 | 29.61 | 32.32 | 36.33 | 48.03 | 53.28 | a | 62.81 | 61.39 | 55.40 | 41.84 | 29.60 | 24.32 | 41.72 | ||||||||||||
1948 | 22.13 | 28.41 | 30.71 | 38.90 | 42.55 | 54.33 | 63.16 | 60.77 | 55.67 | 46.00 | 24.90 | 30.81 | 41.53 | |||||||||||||
1949 | 26.65 | 25.68 | 33.58 | 38.35 | d | 41.68 | c | 54.03 | 63.61 | 57.19 | 58.97 | 41.74 | 33.00 | 26.90 | 41.78 | |||||||||||
1950 | 27.52 | 30.43 | 32.90 | 38.66 | a | 44.00 | 51.40 | 62.77 | a | 57.06 | 49.43 | 44.87 | 31.90 | 25.58 | 41.38 | |||||||||||
1951 | 24.77 | 28.75 | 31.74 | 39.73 | 43.32 | 47.77 | 65.77 | 62.29 | 52.57 | 45.58 | 34.90 | 30.16 | 42.28 | |||||||||||||
1952 | 30.26 | 24.62 | 28.74 | 39.10 | 44.84 | 53.70 | 60.37 | a | 63.33 | a | 53.50 | 40.77 | 30.66 | a | 24.90 | 41.23 | ||||||||||
1953 | 25.81 | 24.18 | 33.84 | 36.83 | a | 37.74 | 51.23 | 62.77 | 58.81 | 49.97 | 41.52 | 31.60 | 18.94 | 39.44 | ||||||||||||
1954 | 26.90 | 30.64 | 35.94 | 39.97 | 43.29 | 52.59 | a | 63.45 | 59.13 | 56.10 | 44.10 | 30.40 | 26.06 | 42.38 | ||||||||||||
1955 | 24.32 | 21.64 | 32.97 | 33.80 | 42.65 | 49.73 | 61.52 | 61.77 | 48.80 | 43.65 | 31.40 | 26.90 | 39.93 | |||||||||||||
1956 | 27.13 | 24.59 | 27.06 | 35.40 | 42.55 | 56.23 | 61.87 | 57.45 | 53.43 | 41.16 | 27.83 | 24.68 | 39.95 | |||||||||||||
1957 | 35.03 | 36.04 | 35.39 | 37.80 | 42.55 | 57.47 | 64.74 | 60.65 | 48.83 | 44.94 | 29.60 | 27.81 | 43.40 | |||||||||||||
1958 | 22.48 | 31.46 | 32.81 | 36.97 | 46.94 | 56.60 | 62.13 | 62.45 | 54.97 | 46.57 | a | 32.43 | 25.23 | 42.59 | ||||||||||||
1959 | 26.00 | 27.75 | 28.58 | 40.20 | 43.16 | 57.77 | 64.74 | 62.68 | 52.77 | 40.00 | a | 33.97 | 30.26 | 42.32 | ||||||||||||
1960 | 24.10 | 23.41 | 33.26 | 36.77 | 41.84 | 54.20 | 63.10 | 62.77 | 53.53 | 42.13 | 32.03 | 23.97 | 40.93 | |||||||||||||
1961 | 30.39 | 27.21 | 33.29 | 37.93 | 42.03 | 56.50 | 63.71 | 62.03 | 53.27 | 41.81 | 32.17 | 30.77 | 42.59 | |||||||||||||
1962 | 28.94 | 33.22 | a | 28.87 | 38.73 | 41.35 | 48.67 | 61.48 | 59.00 | 56.43 | 41.55 | 34.13 | 31.48 | 41.99 | ||||||||||||
1963 | 25.68 | 30.82 | 31.13 | 35.30 | 44.94 | 50.70 | 64.55 | 61.19 | 55.83 | 44.58 | 34.23 | 24.94 | 41.99 | |||||||||||||
1964 | 19.58 | 18.86 | 30.39 | 36.17 | 41.23 | 51.57 | 64.16 | 61.65 | 54.50 | 44.50 | a | 29.73 | 28.39 | 40.06 | ||||||||||||
1965 | 29.42 | 27.21 | 30.29 | 37.37 | 39.90 | 48.00 | 63.16 | 61.26 | 53.00 | 39.39 | 37.23 | 32.39 | 41.55 | |||||||||||||
1966 | 24.10 | 24.71 | 32.71 | 38.00 | 45.87 | 54.33 | ----- | z | 63.42 | 56.43 | 39.45 | 33.90 | 26.26 | 39.93 | a | |||||||||||
1967 | 21.84 | 25.32 | 33.77 | 35.87 | 43.03 | 54.23 | 64.23 | 60.61 | 56.03 | 42.35 | 35.00 | 28.39 | 41.72 | |||||||||||||
1968 | 29.06 | 34.41 | 35.61 | 36.63 | 42.48 | 54.57 | 62.26 | 58.68 | 52.13 | 41.13 | 31.03 | 23.06 | 41.76 | |||||||||||||
1969 | 32.29 | 29.96 | 29.03 | 38.73 | 45.03 | 52.90 | 65.70 | a | 64.45 | 56.03 | 40.87 | 35.07 | 29.42 | 43.29 | ||||||||||||
1970 | 23.87 | 31.61 | 32.94 | 34.60 | 46.23 | 54.43 | 64.61 | 62.39 | 54.73 | 37.52 | 30.87 | 30.06 | 41.99 | |||||||||||||
1971 | 23.74 | 27.21 | 30.55 | 35.20 | 41.97 | 53.43 | 64.52 | 62.35 | 54.27 | 42.00 | 31.30 | 28.77 | 41.28 | |||||||||||||
1972 | 23.90 | 26.97 | 36.68 | 36.00 | 44.23 | 55.40 | 63.39 | 60.90 | 54.43 | 47.77 | 29.00 | 26.90 | 42.13 | |||||||||||||
1973 | 25.61 | 32.00 | 31.90 | 36.03 | 45.52 | 55.83 | 62.65 | 61.13 | 51.17 | 39.32 | 30.87 | 24.35 | 41.37 | |||||||||||||
1974 | 29.00 | 24.54 | 35.77 | 37.43 | 43.97 | 57.10 | 62.55 | 60.06 | 55.67 | 46.19 | 31.90 | 23.71 | 42.32 | |||||||||||||
1975 | 27.10 | 27.11 | 33.06 | 34.33 | 41.26 | 51.20 | 63.58 | 60.90 | 55.07 | 39.45 | 29.63 | 28.35 | 40.92 | |||||||||||||
1976 | 25.84 | 34.00 | 32.16 | 38.20 | 44.52 | 51.63 | 63.00 | 59.29 | 54.63 | 41.00 | 32.50 | 25.71 | 41.87 | |||||||||||||
1977 | 30.71 | 27.71 | 30.00 | 38.97 | 42.97 | 54.57 | 65.13 | 63.84 | 57.77 | 48.94 | 34.23 | 32.26 | 43.92 | |||||||||||||
1978 | 33.29 | 32.86 | 39.48 | 37.47 | 43.29 | 55.03 | 64.00 | 60.58 | 56.50 | 46.52 | 38.20 | 28.90 | 44.68 | |||||||||||||
1979 | 30.97 | 29.00 | 33.00 | 37.33 | 45.90 | 54.63 | 62.94 | 58.84 | 56.33 | 42.84 | 28.33 | 27.32 | 42.29 | |||||||||||||
1980 | 31.23 | 35.55 | 33.84 | 38.07 | 41.68 | 54.27 | 66.42 | 62.55 | 55.50 | 42.16 | 31.13 | 28.94 | 43.44 | |||||||||||||
1981 | 33.29 | 31.39 | 34.13 | 42.67 | 46.61 | 59.83 | 65.23 | 61.65 | 55.50 | 44.26 | 32.47 | 26.87 | 44.49 | |||||||||||||
1982 | 29.48 | 31.11 | a | 34.32 | 37.97 | 44.03 | 50.43 | 63.23 | 62.90 | 56.10 | 37.90 | 36.77 | 29.19 | 42.79 | ||||||||||||
1983 | 28.45 | 31.00 | 34.87 | 35.57 | 42.55 | 51.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.24 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.59 | 30.79 | 34.65 | 40.00 | 46.33 | 56.24 | 64.55 | 62.28 | 56.29 | 44.73 | 34.27 | 29.56 | 43.92 | |||||||||||||
S.D. | 3.85 | 4.42 | 3.91 | 3.95 | 4.32 | 4.20 | 1.88 | 2.18 | 3.17 | 3.72 | 3.97 | 4.04 | 2.95 | |||||||||||||
SKEW | -0.10 | -0.20 | 0.35 | 0.78 | 0.67 | -0.04 | 0.21 | -0.36 | -0.18 | 0.02 | 0.15 | 0.30 | 0.67 | |||||||||||||
MAX | 36.74 | 39.04 | 44.00 | 51.40 | 58.03 | 63.63 | 68.61 | 66.39 | 63.17 | 52.37 | 43.37 | 40.00 | 50.10 | |||||||||||||
MIN | 19.58 | 18.86 | 27.06 | 33.80 | 37.74 | 47.77 | 60.37 | 57.06 | 48.80 | 37.13 | 24.90 | 18.94 | 39.44 | |||||||||||||
YRS | 74 | 76 | 75 | 75 | 74 | 74 | 71 | 73 | 74 | 75 | 75 | 77 | 65 |