| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1893 | ----- | z | 26.82 | ----- | z | 45.55 | 54.83 | g | 58.06 | f | 67.13 | 68.41 | b | 57.93 | 46.35 | 39.77 | 39.87 | a | 48.98 | |||||||
| 1894 | 31.19 | b | 29.95 | 41.11 | 47.65 | ----- | z | ----- | z | ----- | z | 71.32 | 57.25 | 50.44 | 44.18 | 32.03 | 45.01 | |||||||||
| 1895 | 31.74 | 39.23 | 42.47 | 52.15 | 54.74 | 62.28 | 67.63 | 68.63 | 55.90 | 52.55 | 38.78 | 34.22 | a | 50.03 | ||||||||||||
| 1896 | 36.02 | 40.02 | a | 41.98 | b | 43.68 | 49.00 | 60.92 | 71.68 | 67.44 | 56.32 | 48.81 | 31.13 | 37.81 | 48.73 | |||||||||||
| 1897 | 28.03 | 36.84 | 35.11 | 52.93 | 61.95 | 61.73 | 65.45 | 72.69 | 59.15 | 50.47 | 39.05 | 34.54 | d | 49.83 | ||||||||||||
| 1898 | 31.24 | 44.16 | 38.79 | 52.63 | 56.97 | 63.04 | b | 75.35 | 72.97 | 60.47 | 48.76 | 37.67 | 25.62 | b | 50.64 | |||||||||||
| 1899 | 33.06 | 28.66 | 39.90 | 45.97 | 51.11 | 58.75 | 68.84 | 61.63 | 62.68 | 47.08 | 48.37 | 36.39 | 48.54 | |||||||||||||
| 1900 | 40.19 | 35.04 | 47.87 | 48.37 | 56.26 | 64.93 | a | 69.03 | 62.89 | 57.15 | 48.18 | 38.87 | ----- | z | 51.71 | |||||||||||
| 1901 | 32.37 | 35.17 | a | 42.08 | 45.91 | h | 56.10 | f | 56.04 | d | 67.27 | c | 71.25 | a | 53.98 | 54.40 | 45.38 | a | 34.72 | a | 49.27 | |||||
| 1902 | 26.39 | 37.91 | 41.52 | f | 45.35 | 52.87 | 58.50 | 63.63 | 65.95 | 57.40 | 51.32 | 38.59 | a | 32.26 | 48.20 | |||||||||||
| 1903 | 33.58 | 29.14 | 39.45 | 44.34 | b | 53.35 | a | 64.52 | 62.71 | g | 65.21 | g | 56.43 | h | 50.14 | c | 41.00 | l | 34.25 | k | 44.93 | |||||
| 1904 | 36.73 | i | 34.62 | i | 36.52 | b | 49.75 | 53.05 | 61.24 | e | 64.92 | f | 70.68 | 61.15 | f | 50.34 | 44.35 | 33.12 | b | 49.88 | ||||||
| 1905 | 30.97 | a | 28.93 | 40.29 | c | 47.20 | 50.03 | 58.82 | 70.90 | 66.35 | 59.40 | 43.69 | 37.37 | 31.00 | 47.08 | |||||||||||
| 1906 | 33.54 | e | 33.82 | 36.97 | a | 51.30 | 53.63 | 56.48 | 74.31 | 66.77 | 59.05 | a | 51.29 | c | 40.53 | 38.76 | f | 50.70 | ||||||||
| 1907 | 21.48 | a | 35.86 | 40.37 | 47.41 | a | 59.08 | 59.48 | b | 70.02 | 64.07 | a | 60.02 | g | 57.55 | a | 44.45 | a | 37.52 | 48.84 | ||||||
| 1908 | 38.48 | c | 34.81 | c | 43.56 | 50.95 | b | 51.96 | f | 61.28 | a | 78.40 | a | 74.98 | 66.97 | a | 48.09 | c | 43.48 | 29.94 | d | 51.90 | ||||
| 1909 | 26.85 | 39.71 | g | 44.56 | 47.36 | b | 54.13 | 61.81 | d | 66.53 | 69.32 | a | 56.32 | 44.10 | 39.87 | 25.63 | 48.77 | |||||||||
| 1910 | 29.63 | 28.16 | 48.08 | 53.94 | c | 61.30 | a | 64.60 | 70.86 | c | 65.07 | b | 60.38 | 54.11 | d | 41.46 | b | 37.31 | e | 51.24 | ||||||
| 1911 | 33.90 | a | 32.86 | 46.58 | 50.08 | 50.46 | c | 62.60 | a | 69.10 | g | 66.41 | d | 56.67 | 50.16 | 42.75 | 33.53 | 47.82 | ||||||||
| 1912 | 30.71 | 36.04 | b | 38.48 | a | 47.68 | b | 56.42 | a | 62.07 | b | 66.53 | 62.98 | a | 55.68 | 46.18 | 42.45 | 35.48 | 48.39 | |||||||
| 1913 | 28.83 | a | 27.23 | 38.06 | 48.73 | 54.82 | 61.42 | 71.26 | ----- | z | 64.25 | 46.98 | a | 41.90 | 31.19 | 46.79 | ||||||||||
| 1914 | 40.73 | 35.16 | 45.87 | 50.27 | 57.56 | 60.67 | 72.18 | 70.89 | 58.24 | a | 55.19 | 41.63 | 26.10 | b | 51.21 | |||||||||||
| 1915 | 29.89 | 40.20 | 45.81 | 55.47 | 53.58 | 60.48 | 67.94 | 73.16 | 59.20 | b | 52.24 | b | 39.42 | 35.34 | 51.06 | |||||||||||
| 1916 | 17.23 | c | 31.88 | 43.52 | 50.13 | 51.16 | 60.70 | 64.85 | a | 69.03 | 61.20 | 50.58 | a | 36.78 | e | 30.94 | 47.33 | |||||||||
| 1917 | 31.31 | 34.11 | 36.66 | 46.22 | 53.85 | 60.93 | 71.34 | 70.48 | 62.15 | 52.69 | 45.00 | 44.53 | 50.77 | |||||||||||||
| 1918 | 40.58 | 37.84 | 47.28 | a | 50.59 | a | 53.69 | 67.12 | b | 70.82 | k | 64.53 | b | 64.20 | 53.08 | 39.93 | 33.34 | 50.20 | ||||||||
| 1919 | 34.35 | 33.82 | 42.28 | d | 51.67 | a | 55.19 | 60.05 | 70.05 | a | 70.29 | 58.00 | 45.35 | a | 37.33 | d | 22.71 | 48.42 | ||||||||
| 1920 | 29.35 | 33.72 | 40.27 | 43.95 | 53.13 | 58.80 | 69.45 | 67.45 | 57.42 | 46.42 | 38.55 | a | 35.92 | 47.87 | ||||||||||||
| 1921 | 33.61 | 37.12 | 42.94 | 46.40 | 54.66 | 62.52 | 66.31 | 67.94 | 54.63 | 49.97 | 37.87 | 27.87 | 48.49 | |||||||||||||
| 1922 | 22.90 | a | 30.20 | 39.08 | 45.23 | 54.79 | 68.87 | 71.11 | 68.76 | 64.33 | 53.53 | 35.58 | 29.34 | 48.64 | ||||||||||||
| 1923 | 37.90 | 27.05 | 43.61 | 50.92 | 56.26 | 60.69 | a | 70.42 | 68.31 | 65.93 | 49.53 | 42.20 | 39.53 | 51.03 | ||||||||||||
| 1924 | 28.38 | a | 44.21 | 41.85 | 49.67 | 61.39 | 64.08 | 70.19 | 68.05 | c | 61.85 | c | 49.94 | 36.05 | 19.84 | c | 49.63 | |||||||||
| 1925 | 37.03 | 42.43 | a | 43.32 | 52.02 | 57.02 | 63.10 | 71.89 | l | ----- | z | ----- | z | ----- | z | ----- | z | 33.26 | n | 49.15 | ||||||
| 1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.37 | 45.85 | 28.61 | 42.61 | ||||
| 1928 | 30.90 | 35.71 | 45.93 | b | 48.60 | 63.02 | 63.12 | 73.24 | 70.15 | 63.10 | 52.63 | 41.47 | 33.44 | 51.77 | ||||||||||||
| 1929 | 22.85 | d | 25.02 | 45.16 | 47.00 | 58.35 | 62.60 | 70.44 | 74.56 | 61.80 | 55.85 | 41.08 | 41.42 | 50.51 | ||||||||||||
| 1930 | 15.53 | a | 43.04 | 45.63 | 55.45 | 55.74 | 62.00 | 72.13 | 72.60 | 63.37 | 47.98 | 38.87 | 31.02 | 50.28 | ||||||||||||
| 1931 | 37.98 | 37.34 | 45.10 | 51.78 | 62.03 | 63.65 | 73.03 | 72.15 | 62.68 | 52.47 | 36.37 | 32.92 | 52.29 | |||||||||||||
| 1932 | 33.50 | b | 36.29 | 42.35 | 51.82 | 56.48 | 66.35 | 67.63 | 71.50 | 64.00 | 54.75 | a | 46.38 | 28.98 | 51.67 | |||||||||||
| 1933 | 34.63 | 30.93 | a | 43.94 | 49.82 | 53.06 | 62.93 | 71.26 | 72.27 | 58.90 | 56.52 | 42.08 | 41.13 | 51.46 | ||||||||||||
| 1934 | 41.27 | 41.14 | 50.89 | 57.88 | 61.22 | a | 63.85 | 71.60 | 73.24 | b | 62.48 | 54.48 | 45.40 | a | 36.50 | 55.00 | ||||||||||
| 1935 | 34.00 | a | 37.77 | 41.68 | 47.03 | 56.89 | 64.12 | a | 70.90 | 70.35 | a | 67.40 | 49.89 | d | 37.46 | b | 31.60 | 50.76 | ||||||||
| 1936 | 35.59 | b | 20.07 | 42.44 | 54.15 | 62.58 | 64.67 | a | 71.65 | a | 71.32 | 61.17 | c | 56.77 | 36.00 | a | 38.93 | a | 51.28 | |||||||
| 1937 | 16.60 | a | 34.37 | a | 46.50 | 47.76 | a | 58.35 | 64.34 | a | 72.93 | b | 68.61 | 64.78 | 55.59 | c | 44.09 | a | 36.57 | a | 50.87 | |||||
| 1938 | 34.82 | 35.66 | 43.53 | 51.63 | 57.34 | 65.62 | 74.95 | 69.90 | 68.63 | 53.31 | 37.71 | a | 36.00 | 52.43 | ||||||||||||
| 1939 | 38.87 | 34.02 | 45.21 | 53.27 | 59.98 | 60.92 | 72.92 | a | 73.16 | 65.09 | a | 53.72 | a | 46.15 | 42.13 | 53.79 | ||||||||||
| 1940 | 32.18 | 40.69 | 49.26 | 51.28 | 61.44 | 68.08 | 71.66 | 72.32 | 65.13 | 56.26 | 36.05 | 36.58 | 53.41 | |||||||||||||
| 1941 | 33.89 | 40.75 | 49.58 | 54.08 | 56.55 | 61.70 | 74.40 | 70.39 | 58.25 | 50.02 | 44.17 | 37.44 | 52.60 | |||||||||||||
| 1942 | 23.29 | 36.59 | 45.13 | 52.77 | 55.40 | 59.77 | 71.16 | 70.47 | 64.92 | 54.42 | 39.37 | 37.61 | 50.91 | |||||||||||||
| 1943 | 25.14 | c | 35.48 | 41.06 | 53.48 | b | 53.85 | 58.50 | 70.66 | 67.45 | 65.90 | 52.79 | 38.08 | 30.89 | 49.44 | |||||||||||
| 1944 | 32.29 | 34.90 | 41.82 | 50.53 | 56.82 | 61.28 | 70.63 | 68.95 | 65.05 | 56.37 | 38.72 | 29.31 | 50.56 | |||||||||||||
| 1945 | 34.90 | 38.05 | 40.55 | 47.02 | 55.79 | 59.62 | 71.37 | 70.77 | 59.81 | f | 54.16 | b | 39.83 | 33.34 | 49.58 | |||||||||||
| 1946 | 37.89 | 39.66 | 42.61 | 50.50 | 57.34 | 59.70 | e | 69.36 | b | 68.68 | k | 60.37 | d | 46.97 | 38.03 | 36.48 | 48.99 | |||||||||
| 1947 | 31.15 | 39.71 | 47.45 | 52.15 | 63.40 | 62.82 | 70.34 | 69.10 | 65.47 | 54.92 | 41.45 | 37.98 | 52.99 | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 66.83 | a | 67.50 | 57.34 | a | 46.73 | 36.37 | 26.52 | 50.21 | |||||
| 1949 | 18.08 | 35.23 | 44.40 | 55.25 | 61.08 | 64.73 | 70.55 | u | 67.39 | q | 63.63 | c | 48.71 | b | 44.03 | 33.95 | 46.91 | |||||||||
| 1950 | 17.16 | 35.54 | b | 39.18 | 45.60 | 53.00 | m | 60.84 | b | 72.35 | 73.45 | a | 64.84 | b | 51.77 | a | 40.95 | 38.52 | a | 49.11 | ||||||
| 1951 | 29.97 | 34.87 | a | 36.26 | h | 50.73 | 59.00 | 63.40 | 73.77 | 71.28 | a | 65.00 | 49.44 | 38.73 | 31.54 | h | 53.62 | |||||||||
| 1952 | 29.98 | 38.10 | 40.27 | 52.97 | 57.13 | a | 61.88 | 73.55 | b | 71.56 | 67.88 | 58.83 | a | 36.07 | 33.71 | 51.83 | ||||||||||
| 1953 | 43.65 | a | 39.25 | 41.32 | a | 46.16 | b | 52.98 | 57.32 | 71.74 | 70.35 | a | 64.90 | i | 54.63 | 44.65 | 39.32 | 51.03 | ||||||||
| 1954 | 32.45 | 37.62 | 39.88 | f | 49.64 | a | 57.37 | 57.95 | 69.95 | 66.75 | g | 61.27 | 51.23 | a | ----- | z | 10.00 | z | 52.19 | |||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 31.23 | 35.20 | 42.83 | 49.90 | 56.38 | 61.93 | 70.55 | 69.48 | 61.34 | 51.40 | 40.45 | 33.79 | 50.62 | |||||||||||||
| S.D. | 6.51 | 4.91 | 3.50 | 3.26 | 3.53 | 2.70 | 2.84 | 3.03 | 3.76 | 3.53 | 3.47 | 4.98 | 1.82 | |||||||||||||
| SKEW | -0.66 | -0.62 | 0.07 | 0.07 | 0.18 | 0.21 | -0.09 | -0.58 | -0.05 | -0.13 | 0.08 | -0.43 | 0.10 | |||||||||||||
| MAX | 43.65 | 44.21 | 50.89 | 57.88 | 63.40 | 68.87 | 78.40 | 74.98 | 68.63 | 58.83 | 48.37 | 44.53 | 55.00 | |||||||||||||
| MIN | 15.53 | 20.07 | 35.11 | 43.68 | 49.00 | 56.04 | 63.63 | 61.63 | 53.98 | 43.69 | 31.13 | 19.84 | 47.08 | |||||||||||||
| NO YRS | 57 | 57 | 55 | 58 | 54 | 57 | 53 | 54 | 54 | 60 | 58 | 55 | 37 | |||||||||||||