YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.77 | 52.52 | 44.29 | b | 33.77 | 16.81 | c | -0.65 | 33.92 | f | ||||
1894 | -3.36 | c | 3.25 | 20.29 | 35.60 | 42.84 | 53.69 | a | 56.84 | 55.39 | 44.38 | a | 34.71 | 15.47 | 11.85 | d | 30.91 | |||||||||
1895 | -9.68 | -3.36 | 15.36 | i | 35.14 | a | 43.61 | 49.57 | 51.90 | b | 49.07 | b | 45.76 | a | 28.31 | b | 15.47 | 7.35 | 28.47 | a | ||||||
1896 | -0.84 | 7.38 | 6.80 | a | 33.87 | 47.29 | 52.62 | f | 53.45 | 52.97 | b | 41.20 | 30.81 | 6.76 | a | 11.81 | 26.50 | a | ||||||||
1897 | -5.17 | b | 1.07 | 6.52 | 34.00 | b | 44.83 | s | 49.33 | 59.39 | 49.74 | 51.37 | 35.36 | c | 14.80 | 1.32 | 27.07 | a | ||||||||
1898 | 6.32 | 3.43 | 16.68 | 28.66 | a | 41.97 | 52.37 | 54.82 | c | 50.86 | b | 43.04 | b | 31.61 | 15.17 | a | 2.93 | b | 28.99 | |||||||
1899 | 3.33 | a | -4.54 | 4.00 | 30.57 | 42.94 | 52.07 | 55.32 | 55.61 | 42.43 | 35.60 | a | 27.73 | 7.13 | a | 29.35 | ||||||||||
1900 | 10.05 | l | -6.16 | c | 13.60 | a | 36.73 | 41.80 | a | 49.73 | 54.68 | ----- | z | 47.48 | a | 39.94 | n | 7.33 | o | 11.19 | 31.13 | d | ||||
1901 | 1.80 | a | -0.96 | c | 18.60 | a | 33.70 | 42.61 | 51.45 | a | 60.96 | e | 54.59 | d | 45.00 | e | 36.71 | g | 14.25 | b | 4.48 | d | 29.68 | a | ||
1902 | 5.32 | 5.93 | 21.63 | a | 28.03 | 45.84 | 47.07 | 55.29 | 52.68 | 38.67 | 31.74 | 23.43 | b | 1.26 | 29.74 | |||||||||||
1903 | 1.77 | -2.46 | b | 19.80 | a | 31.18 | b | 43.61 | 47.50 | 54.67 | a | 53.93 | a | 43.73 | 35.07 | a | 17.10 | 0.29 | 28.85 | |||||||
1904 | -4.03 | -8.38 | 16.84 | 29.10 | 42.13 | 49.90 | 49.05 | j | 52.16 | 44.13 | ----- | z | ----- | z | ----- | z | 27.73 | d | ||||||||
1905 | ----- | z | 5.70 | r | 23.45 | 28.93 | 39.53 | a | 49.24 | a | 51.24 | f | 57.65 | 48.90 | t | 29.41 | d | 23.80 | 11.17 | a | 32.90 | d | ||||
1906 | 5.81 | 6.28 | c | 11.52 | 33.10 | ----- | z | 49.10 | a | 54.73 | i | 55.97 | ----- | z | 26.29 | 12.83 | -0.16 | 22.30 | c | |||||||
1907 | -10.33 | a | 5.74 | a | 21.06 | 24.70 | 41.00 | s | 53.17 | 57.16 | 50.39 | 41.96 | b | 31.30 | a | 19.90 | a | 8.59 | b | 27.60 | a | |||||
1908 | 4.52 | d | 7.79 | 14.48 | b | 32.14 | a | 41.83 | a | 49.93 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.12 | f | |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | 43.77 | e | 54.10 | 58.73 | a | 60.48 | 48.33 | 34.97 | 20.75 | b | 1.40 | a | 40.32 | d | ||||
1910 | 5.28 | f | -1.15 | a | 31.04 | c | 36.36 | e | 35.76 | b | 54.13 | 55.97 | a | 51.74 | 46.62 | a | 40.46 | c | 18.43 | 6.28 | m | 36.94 | b | |||
1911 | ----- | z | ----- | z | ----- | z | ----- | z | 53.56 | m | 57.57 | 56.12 | e | 51.32 | ----- | z | ----- | z | ----- | z | ----- | z | 55.00 | i | ||
1912 | -6.60 | k | 6.79 | 15.04 | f | 32.88 | d | 47.83 | b | 51.07 | 58.84 | 55.45 | 43.30 | 35.35 | 23.83 | 11.89 | c | 36.72 | b | |||||||
1913 | -2.48 | 0.18 | 11.42 | 36.47 | 44.70 | a | 55.63 | 57.03 | 61.42 | 49.37 | 29.61 | ----- | z | 15.00 | 32.58 | a | ||||||||||
1914 | 6.93 | a | -6.43 | 18.16 | 31.10 | 45.16 | 55.60 | 62.46 | e | 53.97 | ----- | z | ----- | z | 23.03 | a | -1.27 | a | 28.87 | b | ||||||
1915 | 0.65 | 14.85 | a | 17.03 | 42.70 | 43.39 | 49.62 | a | 53.58 | 53.45 | 49.00 | 37.00 | 21.83 | 10.03 | 32.76 | |||||||||||
1916 | -7.13 | 1.82 | a | 18.39 | 33.77 | 45.89 | c | 54.14 | a | 67.32 | 58.61 | 44.90 | 31.77 | a | 13.55 | h | -5.34 | b | 31.28 | a | ||||||
1917 | -5.55 | -10.36 | f | 16.48 | 30.70 | 38.32 | 46.77 | 55.79 | b | 51.45 | 45.60 | 27.48 | 27.43 | -3.03 | 30.13 | a | ||||||||||
1918 | -7.27 | a | 4.67 | a | 25.52 | 28.23 | 43.71 | 54.68 | e | 54.26 | 57.94 | 38.70 | 37.03 | 25.00 | 11.74 | 31.18 | ||||||||||
1919 | 13.70 | d | 6.54 | 18.52 | 34.33 | 45.58 | 59.37 | ----- | z | 54.27 | a | 48.59 | a | 27.45 | b | 13.11 | b | 0.85 | e | 29.30 | a | |||||
1920 | -2.26 | h | 1.85 | c | 15.52 | f | 25.30 | 45.84 | f | 53.20 | 55.56 | d | 52.86 | j | ----- | z | 39.52 | 23.54 | d | 11.38 | b | 30.05 | e | |||
1921 | 10.17 | a | 11.46 | b | 17.83 | a | 33.82 | b | 43.86 | b | 59.41 | c | 61.07 | c | 55.62 | b | 49.82 | b | 44.04 | f | ----- | z | ----- | z | 38.12 | c |
1922 | 2.67 | a | -4.37 | a | 21.76 | b | 34.07 | b | 49.57 | a | 54.79 | b | 55.14 | b | 57.90 | a | 49.28 | a | 38.46 | e | 28.73 | h | 5.41 | b | 33.15 | a |
1923 | 4.88 | e | -5.45 | f | 10.50 | e | 31.79 | b | 43.55 | 56.93 | a | 62.53 | a | 53.52 | 50.69 | d | 34.70 | a | 25.88 | e | 12.37 | d | 35.21 | a | ||
1924 | -9.52 | d | 10.24 | 16.72 | b | 30.14 | a | 35.79 | b | 50.28 | a | 53.66 | b | 54.07 | b | 44.67 | c | 39.46 | c | 19.41 | a | -3.83 | a | 28.42 | ||
1925 | -2.31 | b | 8.81 | b | 19.89 | c | 37.17 | a | 38.45 | 52.97 | 55.90 | 54.54 | c | ----- | z | ----- | z | ----- | z | ----- | z | 33.18 | d | |||
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.77 | 56.03 | ----- | z | ----- | z | ----- | z | ----- | z | 56.40 | j | ||
1927 | ----- | z | ----- | z | 21.43 | q | 34.13 | 42.45 | 50.97 | 55.23 | 51.48 | 49.20 | 35.42 | 17.45 | a | -6.71 | c | 36.62 | c | |||||||
1928 | 6.03 | 10.64 | a | 20.10 | 24.30 | 44.52 | b | 48.25 | b | 60.74 | 55.72 | b | 43.07 | b | 33.69 | b | 23.53 | 14.48 | 32.09 | |||||||
1929 | -11.10 | -5.43 | 23.40 | a | 32.80 | 38.74 | 49.28 | a | 58.13 | 54.42 | 44.97 | 33.67 | g | 17.00 | 9.93 | d | 28.38 | a | ||||||||
1930 | -7.83 | a | 17.32 | 19.27 | a | 33.73 | 42.06 | 52.87 | 59.39 | 56.97 | b | 43.80 | 33.96 | e | 21.10 | 13.80 | a | 32.20 | ||||||||
1931 | 13.65 | 19.46 | 18.55 | 31.34 | a | 39.20 | a | 59.17 | 59.45 | b | 56.03 | 50.31 | a | 39.32 | 23.50 | 15.39 | 35.45 | |||||||||
1932 | 3.29 | 8.38 | 10.52 | 33.57 | 44.13 | 56.50 | 58.16 | 56.71 | 42.08 | d | 31.93 | a | 17.90 | a | 3.90 | 30.59 | ||||||||||
1933 | 9.23 | 5.36 | 19.74 | 32.40 | 45.48 | 60.00 | b | 61.90 | b | 54.97 | a | 52.10 | 31.86 | b | 19.72 | a | 1.45 | k | 35.71 | a | ||||||
1934 | 7.66 | b | 9.82 | 15.32 | 32.27 | 51.16 | 55.63 | 59.03 | 53.94 | 43.27 | 40.26 | 26.73 | 6.32 | 33.45 | ||||||||||||
1935 | -1.00 | a | 19.32 | 22.61 | 31.43 | 40.81 | 52.13 | 64.48 | 57.10 | 45.33 | 32.03 | 13.50 | 6.97 | a | 32.06 | |||||||||||
1936 | -13.26 | -16.86 | 20.35 | 26.33 | 50.19 | 53.53 | 65.19 | 59.43 | a | 50.00 | 29.97 | 18.63 | 10.58 | 29.51 | ||||||||||||
1937 | -12.26 | 0.71 | 19.16 | 33.20 | 47.45 | 53.41 | a | 59.26 | 61.77 | 48.00 | 32.81 | 17.73 | 2.52 | 30.31 | ||||||||||||
1938 | 1.03 | 3.57 | 24.23 | 32.53 | 44.26 | 54.07 | 58.74 | 59.55 | 49.27 | 40.84 | 16.97 | 11.53 | a | 33.05 | ||||||||||||
1939 | 7.97 | -5.93 | 16.68 | 29.13 | 48.74 | 55.17 | 59.94 | 55.42 | 48.03 | 34.52 | 22.43 | 17.10 | 32.43 | |||||||||||||
1940 | -5.61 | 6.76 | 18.00 | 31.40 | 42.90 | 52.00 | 59.97 | 56.61 | 51.23 | 40.81 | 17.55 | a | 13.55 | 32.10 | ||||||||||||
1941 | 5.90 | 4.82 | 20.65 | 39.70 | 49.58 | 56.30 | 60.23 | 57.94 | 47.35 | j | 37.52 | 24.33 | 16.03 | a | 33.91 | a | ||||||||||
1942 | 10.30 | a | 8.82 | 24.97 | 36.63 | 43.77 | 54.00 | 57.26 | 58.27 | a | 44.53 | 35.61 | ----- | z | ----- | z | 37.42 | b | ||||||||
1943 | -10.32 | 5.00 | 11.29 | 33.40 | 40.20 | a | 55.03 | 60.00 | 57.90 | 44.47 | 35.32 | 23.07 | 11.65 | 30.58 | ||||||||||||
1944 | 13.45 | b | 5.76 | 13.87 | 30.47 | 48.84 | 55.40 | 57.84 | 56.45 | 49.07 | a | 36.39 | 29.30 | 10.35 | 33.93 | |||||||||||
1945 | 6.61 | -1.73 | b | 26.42 | 30.47 | 38.39 | 50.73 | 57.39 | 57.23 | a | 47.00 | 33.68 | 19.90 | -0.06 | 30.50 | |||||||||||
1946 | -0.68 | -0.37 | a | 28.55 | 37.47 | 41.16 | 54.50 | 60.13 | 54.87 | 46.80 | 36.48 | 21.27 | 9.45 | 32.47 | ||||||||||||
1947 | 10.94 | 2.79 | 19.00 | 32.50 | 41.13 | 52.23 | 59.03 | 63.47 | a | 48.87 | 43.94 | 17.33 | 5.61 | 33.07 | ||||||||||||
1948 | -3.97 | -0.41 | 12.16 | 36.20 | 43.77 | 53.28 | a | 60.07 | a | 57.87 | 52.70 | 36.61 | 24.67 | 7.29 | 31.69 | |||||||||||
1949 | -1.52 | -2.18 | 18.94 | 32.77 | 46.77 | 55.70 | 60.10 | 59.94 | 44.23 | 38.84 | 27.90 | 5.50 | a | 32.25 | ||||||||||||
1950 | -10.84 | 3.18 | 15.84 | 28.00 | 42.77 | 53.81 | c | 57.03 | a | 53.53 | a | 47.13 | 36.81 | 11.48 | a | -0.03 | 28.23 | |||||||||
1951 | -5.52 | 7.36 | 3.82 | c | 32.56 | c | 45.65 | 50.28 | a | 58.33 | a | 57.29 | 45.67 | 36.19 | 13.79 | a | 1.45 | 28.91 | ||||||||
1952 | -5.11 | d | 11.21 | 12.07 | a | 35.28 | a | 42.33 | a | 58.80 | 60.68 | 57.61 | 50.73 | 30.74 | 22.72 | a | 13.77 | 32.57 | ||||||||
1953 | 4.48 | 10.43 | 21.42 | 29.87 | 44.23 | 56.10 | 58.04 | c | 60.23 | 46.31 | a | 41.53 | a | 26.31 | a | 7.74 | 33.89 | |||||||||
1954 | -6.45 | 22.62 | b | 18.86 | b | 32.73 | 39.81 | 55.62 | a | 60.23 | a | 57.06 | 48.97 | 35.81 | 27.07 | a | 13.76 | b | 33.84 | |||||||
1955 | 4.55 | -0.68 | 11.83 | a | 38.63 | 48.94 | 53.67 | 63.00 | 61.13 | 45.57 | 36.10 | a | 11.87 | -2.26 | 31.03 | |||||||||||
1956 | -0.55 | -0.24 | 15.06 | 26.71 | b | 44.90 | 60.03 | 56.45 | 56.39 | 43.63 | 40.16 | 23.43 | 13.84 | 31.65 | ||||||||||||
1957 | -3.50 | a | 8.25 | 18.65 | 33.24 | a | 43.52 | 53.84 | e | 64.54 | e | 58.19 | 46.90 | 38.74 | 24.23 | 16.17 | a | 33.56 | ||||||||
1958 | 11.03 | 2.64 | 22.55 | 34.54 | b | 47.48 | j | 49.86 | i | 58.63 | a | 56.90 | 49.45 | a | 38.55 | 21.73 | d | 3.53 | a | 29.96 | b | |||||
1959 | -0.77 | 1.07 | 22.81 | 31.37 | 45.32 | 56.80 | 57.97 | 59.45 | 48.59 | c | 30.48 | 13.10 | 19.48 | 32.14 | ||||||||||||
1960 | 1.32 | 4.62 | 4.23 | a | 31.83 | 42.23 | 50.70 | 58.16 | 58.74 | 48.37 | 33.74 | 20.40 | 3.93 | a | 29.86 | |||||||||||
1961 | 0.77 | a | 10.29 | 25.29 | 27.52 | a | 41.06 | 54.37 | 56.39 | 59.39 | 46.80 | 37.03 | 21.20 | 2.68 | 31.90 | |||||||||||
1962 | -1.48 | 3.39 | 16.16 | 30.40 | 48.45 | 55.07 | 56.48 | 56.19 | 43.63 | 37.29 | 26.33 | 8.06 | 31.67 | |||||||||||||
1963 | -6.83 | a | 2.11 | 22.58 | 33.37 | 42.58 | 56.20 | 58.61 | 57.32 | 51.13 | 44.10 | 25.52 | a | 0.65 | 32.28 | |||||||||||
1964 | 9.65 | 11.14 | 10.71 | 34.53 | 47.29 | 54.13 | 60.23 | 54.45 | 44.93 | 35.71 | 20.83 | 1.03 | a | 32.05 | ||||||||||||
1965 | -6.32 | 0.93 | 8.81 | 34.27 | ----- | z | 54.23 | 58.87 | 56.45 | 41.70 | 39.55 | 20.87 | 20.67 | y | 30.94 | b | ||||||||||
1966 | -11.32 | f | 1.96 | 16.33 | y | 29.43 | i | 40.84 | 54.57 | 63.74 | 55.33 | a | 45.97 | 34.71 | 17.00 | c | 7.48 | 35.73 | c | |||||||
1967 | 2.74 | -3.93 | 21.19 | 32.37 | 38.32 | 54.17 | 55.19 | 53.81 | 47.00 | a | 33.39 | 20.90 | 8.29 | 30.29 | ||||||||||||
1968 | 1.68 | 1.34 | 25.30 | a | 33.47 | 40.58 | 53.77 | 57.23 | 55.94 | 47.53 | 36.26 | 24.53 | 5.74 | 31.95 | ||||||||||||
1969 | -5.65 | 7.64 | 8.81 | 35.03 | 45.97 | 47.38 | d | 57.42 | 57.71 | 45.07 | 32.68 | 22.73 | 8.94 | 30.31 | ||||||||||||
1970 | -7.97 | 4.54 | 14.10 | 30.00 | 42.68 | 55.20 | 58.65 | 57.68 | 47.90 | 37.32 | 22.17 | 5.19 | 30.62 | |||||||||||||
1971 | -4.39 | 6.07 | 21.29 | 32.93 | 40.23 | 58.03 | 54.06 | 54.97 | 47.77 | 39.68 | 22.47 | 3.65 | 31.40 | |||||||||||||
1972 | -3.23 | -1.34 | 18.39 | 32.60 | 49.50 | a | 53.37 | 57.52 | 58.06 | 44.30 | 32.65 | 23.13 | -1.81 | 30.26 | ||||||||||||
1973 | 6.13 | 12.21 | 30.16 | 32.70 | 42.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.77 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.04 | 4.01 | 17.67 | 32.45 | 43.57 | 53.48 | 58.28 | 56.02 | 46.42 | 35.26 | 20.45 | 6.74 | 31.44 | |||||||||||||
S.D. | 6.96 | 6.79 | 5.95 | 3.30 | 3.39 | 3.15 | 2.97 | 2.91 | 3.07 | 3.86 | 4.70 | 6.04 | 1.62 | |||||||||||||
SKEW | 0.10 | 0.10 | -0.31 | -0.01 | 0.09 | -0.07 | 0.54 | -0.07 | -0.20 | -0.07 | -0.46 | -0.11 | -0.00 | |||||||||||||
MAX | 13.70 | 22.62 | 31.04 | 42.70 | 51.16 | 60.03 | 67.32 | 63.47 | 52.70 | 44.10 | 29.30 | 19.48 | 35.45 | |||||||||||||
MIN | -13.26 | -16.86 | 3.82 | 24.30 | 35.76 | 46.77 | 51.90 | 49.07 | 38.67 | 26.29 | 6.76 | -6.71 | 28.23 | |||||||||||||
YRS | 70 | 73 | 72 | 76 | 72 | 76 | 75 | 77 | 71 | 70 | 69 | 70 | 46 |