| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1894 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.33 | 58.97 | 54.00 | 40.93 | a | 55.56 | ||||
| 1895 | 37.55 | 48.75 | 53.39 | 63.73 | 67.45 | 77.30 | 80.57 | a | 81.61 | 66.73 | 66.87 | 50.00 | 42.19 | 61.35 | ||||||||||||
| 1896 | 41.94 | 50.03 | 52.90 | 56.53 | 63.58 | 74.13 | 84.29 | 76.55 | 71.97 | 64.55 | 41.83 | a | 43.39 | 60.14 | ||||||||||||
| 1897 | 39.48 | 45.93 | 45.55 | 65.53 | 74.06 | 72.93 | ----- | z | 83.81 | 69.27 | 61.81 | 46.87 | 40.52 | 58.70 | ||||||||||||
| 1898 | 40.87 | 46.89 | 51.29 | 62.20 | 67.97 | 73.53 | 78.97 | 78.87 | 71.83 | 58.52 | 46.70 | 37.71 | 59.61 | |||||||||||||
| 1899 | 39.84 | 40.71 | 51.55 | 57.97 | 60.32 | 69.93 | 79.71 | 69.68 | 73.70 | 58.03 | 53.03 | 44.32 | 58.23 | |||||||||||||
| 1900 | 46.29 | 43.71 | 58.29 | 62.80 | 65.52 | 73.77 | 78.94 | 73.90 | 68.40 | 59.35 | 50.13 | 49.71 | 60.90 | |||||||||||||
| 1901 | 44.55 | b | 47.50 | 55.06 | 61.67 | 69.26 | 69.77 | 78.45 | 84.71 | 70.17 | 69.84 | 54.47 | 47.03 | 62.71 | ||||||||||||
| 1902 | 41.84 | 44.18 | 49.90 | 58.50 | 65.84 | 71.07 | 75.81 | 79.65 | 72.40 | 64.81 | 48.41 | a | 38.13 | 59.21 | ||||||||||||
| 1903 | 42.97 | 43.96 | 52.71 | 57.90 | 70.13 | 74.50 | 75.90 | 78.03 | 70.83 | 63.52 | 48.07 | 41.77 | 60.02 | |||||||||||||
| 1904 | 46.03 | 42.55 | 47.00 | 64.10 | 69.84 | f | 76.97 | 80.19 | 86.25 | k | 79.71 | m | 65.86 | c | 54.77 | 44.53 | a | 58.00 | ||||||||
| 1905 | 41.42 | 43.79 | 58.87 | 66.77 | 65.63 | l | 73.93 | b | 84.35 | 81.10 | 73.96 | b | 58.32 | 51.97 | 40.71 | 61.38 | ||||||||||
| 1906 | 44.61 | 46.82 | 53.06 | 68.47 | 67.48 | 71.93 | 88.17 | b | 83.57 | a | 73.33 | 63.52 | 51.30 | 44.74 | 63.08 | |||||||||||
| 1907 | 34.86 | b | 45.81 | a | 50.32 | 60.83 | a | 69.97 | 70.46 | f | 80.23 | a | 75.48 | 72.47 | 66.29 | 52.41 | c | 43.57 | h | 60.87 | ||||||
| 1908 | 44.27 | e | 45.52 | 53.54 | g | 63.00 | e | 60.52 | f | 70.11 | c | 78.44 | f | 77.58 | 71.59 | c | 60.10 | 51.97 | 40.52 | 58.29 | ||||||
| 1909 | 32.06 | 44.61 | 55.16 | 59.10 | 64.16 | 71.53 | 73.45 | 76.84 | 72.77 | 61.65 | 49.20 | 35.26 | 57.98 | |||||||||||||
| 1910 | 36.94 | 40.54 | 60.29 | 63.80 | 68.71 | 70.03 | 79.29 | 74.81 | 71.63 | 62.77 | 48.63 | 43.74 | 60.10 | |||||||||||||
| 1911 | 38.81 | 43.71 | 58.06 | 60.47 | 62.13 | 68.47 | 81.84 | 77.77 | 66.73 | 60.87 | 49.37 | 43.45 | 59.31 | |||||||||||||
| 1912 | 38.55 | 47.17 | 52.94 | 58.70 | 67.61 | 72.53 | 76.81 | 75.58 | 70.80 | 57.87 | 49.87 | 44.40 | f | 60.77 | ||||||||||||
| 1913 | 39.23 | 42.68 | 50.03 | 60.97 | 66.23 | 71.07 | 77.42 | 79.81 | 72.50 | 59.42 | 49.60 | 39.84 | 59.06 | |||||||||||||
| 1914 | 44.84 | 45.11 | 56.48 | 62.77 | 71.16 | 70.20 | 80.90 | 79.71 | 66.67 | 59.84 | 48.60 | 35.52 | 60.15 | |||||||||||||
| 1915 | 36.97 | 45.96 | 59.13 | 63.46 | d | 64.48 | 71.37 | 75.00 | 82.58 | 73.50 | 62.48 | 47.20 | 42.87 | 60.42 | ||||||||||||
| 1916 | 29.16 | 40.24 | 51.58 | 62.60 | 63.39 | 72.47 | 73.87 | 80.10 | 73.67 | 64.74 | 46.50 | 40.35 | 58.22 | |||||||||||||
| 1917 | 42.32 | 45.39 | 47.74 | 56.03 | 62.00 | 73.17 | 83.06 | 84.90 | 72.93 | 67.97 | 55.50 | 51.52 | 61.88 | |||||||||||||
| 1918 | 47.97 | 44.11 | 53.87 | 64.90 | 65.97 | 80.63 | 80.29 | 78.45 | 80.07 | 65.13 | 51.80 | 45.13 | 63.19 | |||||||||||||
| 1919 | 44.23 | 45.25 | 55.55 | 63.17 | 69.19 | 73.63 | 84.77 | 83.71 | 72.97 | 58.97 | 48.73 | 31.77 | 61.00 | |||||||||||||
| 1920 | 40.29 | 49.59 | 52.65 | 57.27 | 67.13 | 73.40 | 80.48 | 81.58 | 69.23 | 60.35 | 50.30 | 44.39 | 60.55 | |||||||||||||
| 1921 | 41.87 | 46.75 | 54.23 | 58.57 | 67.61 | 74.50 | 77.74 | 80.03 | 68.97 | 65.32 | 49.10 | 39.10 | 60.32 | |||||||||||||
| 1922 | 34.00 | 38.57 | 49.39 | 58.17 | 69.74 | 78.50 | 81.97 | 78.84 | 75.47 | 63.32 | 47.67 | 36.06 | 59.31 | |||||||||||||
| 1923 | 45.03 | 41.39 | 54.97 | 64.03 | 66.26 | 73.30 | 78.84 | 82.48 | 76.47 | 63.13 | 54.67 | 44.10 | 62.06 | |||||||||||||
| 1924 | 39.13 | 52.21 | 54.35 | 65.10 | 73.19 | 75.97 | 80.65 | 78.39 | 74.73 | 60.29 | 47.07 | 36.29 | 61.45 | |||||||||||||
| 1925 | 47.19 | 50.82 | 56.48 | 63.80 | 73.29 | 77.37 | 83.65 | 79.19 | 73.87 | 65.06 | 48.50 | 46.35 | 63.80 | |||||||||||||
| 1926 | 43.87 | 51.71 | d | 63.39 | 71.40 | 69.26 | 80.07 | 84.94 | 80.10 | 69.10 | 63.65 | 53.10 | 41.26 | 64.32 | ||||||||||||
| 1927 | 38.10 | 48.57 | 54.06 | 62.53 | 65.61 | 75.83 | 80.97 | 81.55 | 69.53 | 63.16 | 53.17 | 40.61 | 61.14 | |||||||||||||
| 1928 | 37.55 | 47.97 | 54.77 | 59.37 | 74.39 | 70.37 | 79.94 | 80.23 | 72.00 | 60.94 | 50.37 | 39.52 | 60.62 | |||||||||||||
| 1929 | 34.45 | 36.14 | 54.68 | 57.23 | 68.26 | 72.20 | 82.16 | 83.35 | 76.00 | 67.61 | 50.07 | c | 46.65 | 60.73 | ||||||||||||
| 1930 | 27.07 | a | 50.54 | 58.74 | 66.40 | 67.39 | 75.37 | 82.13 | 82.77 | 74.53 | 59.97 | 49.20 | 40.63 | a | 61.23 | |||||||||||
| 1931 | 43.87 | 48.57 | 54.19 | 65.60 | 74.74 | 74.43 | 83.29 | 84.71 | 72.70 | 63.65 | 47.57 | 37.39 | 62.56 | |||||||||||||
| 1932 | 41.00 | 44.41 | 51.77 | 63.77 | 69.16 | 78.90 | a | 79.42 | 81.27 | a | 79.90 | 64.77 | 53.00 | 39.52 | 62.24 | |||||||||||
| 1933 | 42.10 | 39.75 | 53.84 | 65.70 | 63.32 | 73.67 | 82.06 | 82.39 | 67.40 | 65.32 | 52.17 | 48.65 | 61.36 | |||||||||||||
| 1934 | 49.35 | 53.89 | 63.58 | 71.17 | 71.35 | 75.60 | 79.45 | 84.42 | 73.50 | 65.19 | 52.77 | 45.16 | 65.45 | |||||||||||||
| 1935 | 41.13 | 48.64 | 51.39 | 62.47 | 71.16 | 77.37 | 81.48 | 83.58 | 80.33 | 61.39 | 46.13 | 41.13 | 62.18 | |||||||||||||
| 1936 | 45.35 | 33.86 | 54.10 | 67.43 | 71.65 | 74.77 | 79.26 | 82.55 | 73.83 | 68.81 | 50.03 | 47.35 | 62.42 | |||||||||||||
| 1937 | 31.39 | 41.14 | 55.65 | 57.60 | 70.19 | 75.17 | 78.90 | a | 79.55 | 73.23 | 67.97 | 52.97 | 45.61 | 60.78 | ||||||||||||
| 1938 | 43.35 | 43.18 | 53.97 | 65.37 | 72.03 | 77.03 | 85.94 | 79.77 | 78.10 | 63.42 | 47.07 | 46.26 | 62.96 | |||||||||||||
| 1939 | 46.26 | 44.57 | 56.61 | 67.07 | 71.70 | a | 73.07 | 83.58 | 85.13 | 78.54 | f | 63.48 | 54.33 | 48.06 | 63.08 | |||||||||||
| 1940 | 41.87 | 48.48 | 58.42 | 63.20 | 75.39 | 79.80 | 79.58 | 83.48 | 74.70 | 64.48 | 47.20 | 43.61 | 63.35 | |||||||||||||
| 1941 | 41.90 | 51.07 | 62.97 | 66.27 | 68.42 | 73.13 | 84.39 | 77.77 | 68.60 | 61.13 | 53.33 | 45.23 | 62.85 | |||||||||||||
| 1942 | 33.68 | 47.11 | 55.68 | 63.60 | 65.87 | 70.97 | 80.32 | 80.52 | 75.97 | 65.48 | 47.67 | 44.87 | 60.98 | |||||||||||||
| 1943 | 35.90 | 47.82 | 52.00 | 64.23 | 65.13 | 70.93 | 78.77 | 75.48 | 78.67 | 62.71 | 50.50 | 42.90 | 60.42 | |||||||||||||
| 1944 | 41.55 | 47.83 | 54.26 | 60.10 | 67.90 | 72.23 | 80.55 | 79.26 | 76.80 | 68.10 | 49.00 | 39.97 | 61.46 | |||||||||||||
| 1945 | 46.26 | 49.11 | 50.65 | 58.37 | 68.29 | 73.80 | 82.84 | 80.03 | 71.57 | 63.68 | 47.53 | 40.97 | 61.09 | |||||||||||||
| 1946 | 45.23 | 46.79 | 53.23 | 60.87 | 70.10 | 69.90 | 79.19 | 80.10 | 72.30 | 57.42 | 49.50 | 46.61 | 60.94 | |||||||||||||
| 1947 | 41.97 | 51.61 | 57.77 | 63.67 | 72.61 | 69.80 | 77.00 | 76.35 | 74.40 | 60.68 | 51.03 | 46.06 | 61.91 | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.97 | a | 74.32 | 71.27 | 61.23 | 48.60 | 40.19 | 61.93 | ||||||
| 1949 | 30.61 | c | 44.44 | j | 51.97 | 64.00 | 69.87 | 73.40 | 77.32 | 78.23 | 75.10 | 57.84 | 55.70 | 45.03 | 61.73 | |||||||||||
| 1950 | 28.65 | 39.04 | 49.19 | 57.93 | 66.42 | 71.83 | 78.45 | 81.71 | 74.07 | 58.48 | 49.37 | 46.32 | 58.46 | |||||||||||||
| 1951 | 42.13 | 46.14 | 49.55 | 66.37 | 67.74 | 76.67 | 80.19 | 78.00 | 75.77 | 60.06 | 49.37 | 41.52 | 61.13 | |||||||||||||
| 1952 | 35.45 | 45.55 | 50.74 | 64.50 | 68.45 | 69.57 | 81.42 | 78.61 | 77.73 | 70.74 | 46.53 | 41.26 | 60.88 | |||||||||||||
| 1953 | 50.45 | 49.79 | 52.61 | 58.20 | 65.10 | 67.80 | 81.61 | 79.45 | 75.90 | 65.74 | 53.20 | 48.58 | 62.37 | |||||||||||||
| 1954 | 40.23 | 45.56 | a | 53.44 | d | 61.00 | 69.74 | 66.00 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.99 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 40.44 | 45.67 | 54.07 | 62.51 | 68.31 | 73.54 | 80.29 | 79.90 | 72.95 | 62.94 | 50.14 | 42.64 | 61.16 | |||||||||||||
| S.D. | 5.22 | 4.02 | 3.78 | 3.56 | 3.38 | 3.02 | 2.97 | 3.17 | 3.33 | 3.27 | 2.80 | 3.94 | 1.60 | |||||||||||||
| SKEW | -0.62 | -0.54 | 0.45 | 0.20 | -0.02 | 0.42 | 0.04 | -0.56 | 0.13 | 0.26 | -0.04 | -0.26 | 0.19 | |||||||||||||
| MAX | 50.45 | 53.89 | 63.58 | 71.40 | 75.39 | 80.63 | 88.17 | 85.13 | 80.33 | 70.74 | 55.70 | 51.52 | 65.45 | |||||||||||||
| MIN | 27.07 | 33.86 | 45.55 | 56.03 | 60.32 | 67.80 | 73.45 | 69.68 | 66.67 | 57.42 | 41.83 | 31.77 | 57.98 | |||||||||||||
| NO YRS | 59 | 58 | 58 | 59 | 56 | 57 | 57 | 58 | 58 | 60 | 60 | 58 | 50 | |||||||||||||