| 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 | ----- | z | 9999.00 | |
| 1893 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1894 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1896 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1912 | ----- | z | ----- | z | ----- | z | 60.27 | 68.45 | 73.00 | 77.32 | 75.16 | 71.80 | 61.84 | 63.93 | a | 52.65 | e | 67.16 | ||||||||
| 1913 | 47.65 | 53.36 | 61.03 | 65.50 | 73.77 | 72.27 | 77.55 | b | 82.23 | 78.60 | 63.87 | 56.47 | 48.61 | 65.08 | ||||||||||||
| 1914 | 52.27 | a | 50.88 | d | 60.70 | a | 67.47 | 76.52 | 75.93 | 84.06 | 82.58 | 70.73 | 65.84 | 58.00 | 43.90 | 65.74 | ||||||||||
| 1915 | 44.58 | 52.25 | 60.65 | 66.00 | 66.97 | 76.23 | 77.97 | 84.10 | 73.80 | 65.37 | a | 51.73 | 47.27 | a | 63.91 | |||||||||||
| 1916 | 37.77 | 53.90 | 53.36 | c | 62.60 | 63.19 | 71.80 | 73.65 | 78.77 | a | 72.63 | 64.23 | 49.50 | 43.97 | 60.45 | |||||||||||
| 1917 | 45.48 | 47.82 | 49.23 | 57.40 | 62.77 | 74.00 | 84.97 | 86.53 | a | 74.47 | 65.83 | a | 55.20 | 53.13 | 63.07 | |||||||||||
| 1918 | 51.74 | 50.11 | 56.35 | 65.87 | 66.65 | 80.57 | 79.81 | 80.68 | 77.27 | 63.42 | 52.77 | 46.42 | 64.30 | |||||||||||||
| 1919 | 46.06 | 49.96 | 56.35 | 64.60 | 68.58 | 72.97 | 83.00 | 82.58 | 71.83 | 58.42 | 52.75 | b | 43.31 | b | 62.54 | |||||||||||
| 1920 | 47.97 | 48.45 | 53.16 | 56.87 | 67.42 | 72.83 | 79.81 | 82.87 | 69.63 | 59.16 | 52.83 | 47.65 | 61.55 | |||||||||||||
| 1921 | 47.03 | 52.93 | 55.48 | 59.93 | 66.16 | 74.47 | 80.35 | 80.52 | 72.23 | ----- | z | 54.40 | 44.77 | 62.57 | ||||||||||||
| 1922 | 43.23 | 46.79 | 51.97 | 57.03 | 66.16 | 78.73 | 83.48 | 78.19 | 76.67 | 61.90 | 46.93 | 45.74 | 61.40 | |||||||||||||
| 1923 | 47.74 | 45.36 | 54.65 | 62.27 | 67.00 | 72.63 | 80.67 | p | 82.37 | l | 75.60 | 62.16 | 55.27 | 48.90 | 59.16 | |||||||||||
| 1924 | 46.45 | 52.56 | t | 53.46 | c | 64.40 | 74.44 | o | 74.43 | 81.65 | 76.64 | t | 74.79 | f | 64.12 | f | 49.21 | f | 40.45 | 60.14 | ||||||
| 1925 | 50.55 | 53.61 | 56.58 | 62.87 | 71.10 | 75.73 | 83.61 | 79.19 | 72.43 | 64.97 | 52.33 | 49.55 | 64.38 | |||||||||||||
| 1926 | 47.26 | 55.39 | 64.35 | 70.63 | 69.29 | 81.23 | 85.26 | 79.42 | 72.17 | 65.87 | 55.73 | 47.10 | 66.14 | |||||||||||||
| 1927 | 46.42 | 51.54 | 54.10 | 61.33 | 65.16 | 74.77 | 82.10 | 82.77 | 69.60 | 64.74 | 56.03 | 44.03 | 62.72 | |||||||||||||
| 1928 | 48.48 | 50.93 | 58.84 | 59.57 | 73.81 | 72.17 | 82.23 | 81.55 | 72.37 | 61.97 | 52.43 | 45.32 | 63.30 | |||||||||||||
| 1929 | 38.81 | 46.29 | 56.58 | 57.53 | 69.35 | 72.37 | 81.77 | 82.74 | 76.27 | 67.74 | 53.07 | 50.48 | 62.75 | |||||||||||||
| 1930 | 35.65 | 53.93 | 59.39 | 64.60 | 64.94 | 72.77 | 79.68 | 81.94 | 73.83 | 63.94 | 51.23 | 46.29 | 62.35 | |||||||||||||
| 1931 | 50.13 | 52.32 | 57.81 | 66.60 | 75.06 | 73.87 | 84.00 | 83.29 | 74.43 | 65.10 | 51.90 | 45.84 | 65.03 | |||||||||||||
| 1932 | 45.81 | 50.69 | 56.52 | 62.30 | 66.65 | 77.27 | 78.90 | 80.68 | 78.73 | 67.10 | 57.17 | 43.65 | 63.79 | |||||||||||||
| 1933 | 45.42 | 46.89 | 55.87 | 62.20 | 61.87 | 72.83 | 82.29 | 83.52 | 69.87 | 67.06 | 51.60 | 53.10 | 62.71 | |||||||||||||
| 1934 | 52.35 | 55.61 | 64.81 | 70.37 | 71.65 | 76.07 | 79.35 | 82.90 | 75.57 | 68.26 | 55.23 | 49.26 | 66.79 | |||||||||||||
| 1935 | 48.00 | 52.29 | 51.45 | 61.20 | 68.94 | 77.20 | 80.13 | 81.90 | 78.70 | 59.90 | 48.53 | 44.97 | 62.77 | |||||||||||||
| 1936 | 48.03 | 43.38 | 52.55 | 65.20 | 69.23 | 74.80 | 79.81 | 82.87 | 75.27 | 67.45 | 49.37 | 47.48 | 62.95 | |||||||||||||
| 1937 | 35.48 | 46.57 | 54.97 | 55.87 | 69.29 | 74.50 | 80.55 | 80.71 | 74.77 | 66.87 | 56.53 | 48.94 | 62.09 | |||||||||||||
| 1938 | 46.39 | 51.11 | 54.97 | 64.03 | 71.23 | 78.53 | 86.97 | 80.74 | 78.63 | 64.61 | 50.53 | 48.45 | 64.68 | |||||||||||||
| 1939 | 48.39 | 48.18 | 58.48 | 67.67 | 72.29 | 72.53 | 83.35 | 83.03 | 77.37 | 64.06 | 56.20 | 53.03 | 65.38 | |||||||||||||
| 1940 | 48.52 | 53.41 | 61.00 | 64.63 | 72.90 | 80.30 | 81.90 | a | 84.42 | 73.97 | 67.06 | 51.10 | 50.61 | 65.82 | ||||||||||||
| 1941 | 49.13 | 53.89 | 63.10 | 65.30 | 67.94 | 72.30 | 85.39 | 79.52 | 70.97 | 62.74 | 55.03 | 47.45 | 64.40 | |||||||||||||
| 1942 | 43.97 | 50.96 | 56.26 | 62.93 | 65.16 | 71.20 | 82.06 | 83.77 | 78.07 | 65.90 | 53.03 | 49.10 | 63.54 | |||||||||||||
| 1943 | 41.32 | 53.18 | 55.42 | 63.60 | 66.68 | 69.93 | 81.13 | 78.74 | 78.43 | 63.84 | 53.03 | 46.47 | a | 62.65 | ||||||||||||
| 1944 | 47.26 | 49.97 | 56.90 | 60.83 | 69.13 | 73.07 | 82.65 | 80.48 | 80.20 | 69.19 | 51.90 | 43.58 | 63.76 | |||||||||||||
| 1945 | 47.13 | 52.11 | 52.71 | 59.20 | 69.00 | 75.47 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.27 | |||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 46.14 | 50.75 | 56.64 | 62.90 | 68.61 | 74.67 | 81.46 | 81.56 | 74.59 | 64.53 | 53.49 | 47.32 | 63.66 | |||||||||||||
| S.D. | 4.24 | 3.06 | 3.73 | 3.70 | 3.50 | 2.79 | 2.76 | 2.25 | 3.06 | 2.63 | 3.26 | 3.15 | 1.53 | |||||||||||||
| SKEW | -1.08 | -0.56 | 0.42 | 0.00 | 0.27 | 0.80 | -0.49 | -0.53 | 0.05 | -0.50 | 0.75 | 0.18 | 0.09 | |||||||||||||
| MAX | 52.35 | 55.61 | 64.81 | 70.63 | 76.52 | 81.23 | 86.97 | 86.53 | 80.20 | 69.19 | 63.93 | 53.13 | 66.79 | |||||||||||||
| MIN | 35.48 | 43.38 | 49.23 | 55.87 | 61.87 | 69.93 | 73.65 | 75.16 | 69.60 | 58.42 | 46.93 | 40.45 | 60.45 | |||||||||||||
| NO YRS | 33 | 32 | 33 | 34 | 33 | 34 | 32 | 31 | 32 | 31 | 32 | 33 | 29 | |||||||||||||