| 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 | 49.05 | 55.34 | 60.45 | 65.45 | 63.71 | 60.75 | 49.81 | b | 50.45 | a | 44.44 | e | 55.49 | |||||||
| 1913 | 40.32 | a | 41.66 | 45.89 | 51.33 | 56.37 | 59.83 | 64.20 | c | 67.06 | 61.59 | a | 53.11 | 48.90 | 41.88 | b | 52.68 | |||||||||
| 1914 | 45.53 | a | 42.78 | e | 50.80 | a | 56.08 | 61.47 | 62.72 | 67.26 | 64.68 | 58.60 | 56.13 | a | 48.48 | 35.58 | 54.18 | |||||||||
| 1915 | 38.35 | 43.41 | 50.23 | 52.98 | 55.31 | 60.08 | 64.82 | 68.73 | 60.08 | 54.03 | a | 45.87 | 41.67 | a | 52.96 | |||||||||||
| 1916 | 32.79 | 45.57 | 45.52 | c | 51.10 | 52.26 | 59.07 | 61.31 | 64.48 | a | 60.45 | 49.94 | 41.18 | 38.40 | 50.17 | |||||||||||
| 1917 | 38.03 | 40.20 | 40.76 | 48.28 | 52.81 | 59.43 | 67.53 | 68.12 | a | 61.92 | 52.50 | a | 47.18 | 47.81 | 52.05 | |||||||||||
| 1918 | 45.69 | 42.48 | 47.10 | 52.55 | 54.21 | 65.17 | 65.53 | 66.39 | 63.70 | 54.56 | 45.62 | 40.26 | 53.60 | |||||||||||||
| 1919 | 39.87 | 43.16 | 46.69 | 52.62 | 55.61 | 59.37 | 66.97 | 66.82 | 59.82 | 48.55 | 46.00 | b | 36.66 | b | 51.84 | |||||||||||
| 1920 | 41.27 | 40.00 | 45.00 | 47.97 | 53.40 | 60.07 | 65.63 | 67.45 | 59.73 | 52.21 | 45.27 | 42.50 | 51.71 | |||||||||||||
| 1921 | 40.92 | 45.55 | 47.34 | 49.77 | 54.76 | 62.78 | 64.45 | 65.71 | 58.27 | ----- | z | 48.80 | 38.07 | c | 52.40 | |||||||||||
| 1922 | 36.52 | 39.75 | 43.85 | 47.32 | 55.15 | 63.68 | 67.23 | a | 64.76 | 62.30 | 53.85 | 41.33 | 40.05 | 51.32 | ||||||||||||
| 1923 | 42.55 | 38.55 | 45.24 | 51.65 | 56.05 | 60.37 | 66.47 | p | 66.81 | m | 62.02 | 52.84 | 47.15 | 41.24 | 49.77 | |||||||||||
| 1924 | 38.74 | 44.93 | v | 44.32 | f | 51.23 | b | 60.50 | s | 60.72 | 64.76 | 63.55 | t | 59.85 | f | 54.10 | f | 42.50 | h | 33.42 | 49.77 | |||||
| 1925 | 44.81 | 46.38 | 46.90 | 52.40 | 58.87 | 62.03 | 67.82 | 64.47 | 60.58 | 52.60 | 45.52 | 43.42 | 53.82 | |||||||||||||
| 1926 | 41.10 | 47.75 | 51.29 | 57.32 | 57.60 | 65.68 | 67.85 | 65.71 | 58.57 | 55.65 | 48.90 | 41.47 | 54.91 | |||||||||||||
| 1927 | 40.77 | 43.88 | 45.27 | 50.08 | 54.02 | 62.12 | 66.44 | 67.08 | 59.38 | 54.68 | 49.77 | 38.42 | 52.66 | |||||||||||||
| 1928 | 42.60 | 42.86 | 50.48 | 50.28 | 59.27 | 60.68 | 67.23 | 65.37 | 59.37 | 53.16 | 46.38 | 39.26 | 53.08 | |||||||||||||
| 1929 | 34.81 | 37.29 | 47.19 | 47.68 | 56.11 | 60.40 | 65.76 | 66.06 | 60.15 | 55.16 | 42.43 | 44.24 | 51.44 | |||||||||||||
| 1930 | 29.44 | 46.61 | 47.82 | 54.05 | 53.34 | 59.60 | 64.21 | 66.89 | 60.50 | 52.97 | 43.92 | 39.90 | 51.60 | |||||||||||||
| 1931 | 43.40 | 43.20 | 48.23 | 53.55 | 59.95 | 61.13 | 67.52 | 66.16 | 60.82 | 53.76 | 43.27 | 40.27 | 53.44 | |||||||||||||
| 1932 | 39.31 | 41.93 | 48.44 | 50.97 | 54.95 | 63.22 | 63.94 | 65.89 | 61.40 | 55.15 | 49.33 | 36.69 | 52.60 | |||||||||||||
| 1933 | 39.47 | 39.23 | 46.32 | 49.67 | 51.97 | 60.02 | 65.84 | 66.95 | 57.72 | 55.13 | 44.00 | 47.02 | 51.94 | |||||||||||||
| 1934 | 46.06 | 46.48 | 53.56 | 56.70 | 59.13 | 61.67 | 64.71 | 66.32 | 59.62 | 56.39 | 49.20 | 42.21 | 55.17 | |||||||||||||
| 1935 | 39.89 | 43.39 | 42.24 | 49.65 | 53.82 | 62.03 | 64.77 | 65.19 | 62.45 | 49.92 | 39.92 | 38.44 | 50.98 | |||||||||||||
| 1936 | 41.26 | 35.95 | 43.03 | 52.50 | 57.10 | 61.85 | 64.79 | 65.74 | 59.50 | 53.71 | 40.33 | 42.00 | 51.48 | |||||||||||||
| 1937 | 29.85 | 40.57 | 47.06 | 47.32 | 56.76 | 62.82 | 66.82 | 65.52 | 61.83 | 56.19 | 50.15 | 43.52 | 52.37 | |||||||||||||
| 1938 | 40.60 | 42.96 | 45.81 | 52.58 | 57.71 | 63.50 | 70.00 | 64.74 | 64.93 | 54.79 | 42.57 | 41.56 | 53.48 | |||||||||||||
| 1939 | 42.03 | 41.12 | 48.03 | 54.35 | 58.76 | 60.27 | 68.06 | 67.48 | 63.25 | 55.02 | 47.72 | 46.81 | 54.41 | |||||||||||||
| 1940 | 41.18 | 46.72 | 50.98 | 53.45 | 59.53 | 65.02 | 67.68 | a | 68.76 | 63.83 | 58.10 | 44.82 | 43.27 | 55.28 | ||||||||||||
| 1941 | 43.31 | 45.41 | 51.00 | 53.35 | 57.37 | 61.38 | 70.61 | 67.10 | 59.98 | 53.97 | 48.18 | 42.85 | 54.54 | |||||||||||||
| 1942 | 37.94 | 43.75 | 45.35 | 51.70 | 55.24 | 59.30 | 67.85 | 68.29 | 62.30 | 54.27 | 45.95 | 43.47 | 52.95 | |||||||||||||
| 1943 | 35.42 | 43.05 | 45.02 | 52.72 | 54.68 | 59.15 | 66.40 | 65.03 | 63.57 | 54.66 | 45.47 | 39.48 | a | 52.05 | ||||||||||||
| 1944 | 39.15 | 41.72 | 45.34 | 50.03 | 55.79 | 60.82 | 67.13 | 65.82 | 64.52 | 57.15 | 43.98 | 37.26 | 52.39 | |||||||||||||
| 1945 | 40.63 | 43.88 | 43.95 | 48.75 | 57.61 | 61.43 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.38 | |||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 39.81 | 42.73 | 46.93 | 51.50 | 56.13 | 61.41 | 66.27 | 66.21 | 61.05 | 53.87 | 45.88 | 41.02 | 52.80 | |||||||||||||
| S.D. | 3.99 | 2.84 | 2.88 | 2.58 | 2.36 | 1.79 | 1.87 | 1.31 | 1.88 | 2.18 | 2.98 | 3.29 | 1.31 | |||||||||||||
| SKEW | -0.89 | -0.35 | 0.23 | 0.29 | 0.27 | 0.78 | -0.07 | 0.27 | 0.34 | -0.60 | -0.33 | -0.04 | 0.23 | |||||||||||||
| MAX | 46.06 | 47.75 | 53.56 | 57.32 | 61.47 | 65.68 | 70.61 | 68.76 | 64.93 | 58.10 | 50.45 | 47.81 | 55.28 | |||||||||||||
| MIN | 29.44 | 35.95 | 40.76 | 47.32 | 51.97 | 59.07 | 61.31 | 63.71 | 57.72 | 48.55 | 39.92 | 33.42 | 50.17 | |||||||||||||
| NO YRS | 33 | 32 | 32 | 34 | 33 | 34 | 32 | 31 | 32 | 31 | 32 | 33 | 29 | |||||||||||||