| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 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 | ----- | z | ----- | z | ----- | z | 69.68 | 65.58 | 54.73 | 38.94 | 32.93 | 24.65 | 47.75 | |||||||
| 1913 | 24.61 | 28.07 | 33.84 | 43.03 | 55.65 | 59.63 | 68.65 | 68.71 | 56.50 | 46.39 | 40.70 | 27.03 | 46.07 | |||||||||||||
| 1914 | 30.11 | l | 32.00 | z | 31.29 | 40.97 | 51.42 | 62.97 | 62.84 | 61.97 | 57.73 | 44.06 | 34.03 | a | 24.68 | 47.20 | ||||||||||
| 1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.77 | ----- | z | ----- | z | ----- | z | 23.00 | z | 61.77 | ||
| 1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.93 | ||
| 1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.52 | 39.03 | ----- | z | 40.77 | |||
| 1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.07 | ----- | z | ----- | z | ----- | z | 48.00 | 33.57 | ----- | z | 47.54 | ||||
| 1919 | ----- | z | ----- | z | ----- | z | 28.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.77 | 27.35 | 28.56 | |||
| 1920 | ----- | z | ----- | z | ----- | z | ----- | z | 51.23 | a | ----- | z | ----- | z | ----- | z | 59.33 | ----- | z | ----- | z | ----- | z | 55.28 | ||
| 1921 | 32.03 | 32.75 | 40.42 | 42.93 | 55.65 | 61.17 | 67.32 | 67.48 | 63.83 | 50.61 | 40.57 | 34.35 | 49.09 | |||||||||||||
| 1922 | 22.84 | 29.93 | 36.32 | 46.07 | 55.42 | 64.03 | 69.45 | 69.84 | 63.83 | 50.26 | 36.30 | 29.71 | 47.83 | |||||||||||||
| 1923 | 33.13 | 27.07 | 32.10 | 46.60 | 54.45 | 63.47 | 68.48 | 66.10 | 58.43 | 46.10 | 35.63 | 26.06 | 46.47 | |||||||||||||
| 1924 | 23.00 | 29.10 | 28.97 | 43.03 | 49.65 | 63.80 | 65.58 | 66.19 | 55.67 | 48.03 | 37.76 | a | 20.52 | 44.27 | ||||||||||||
| 1925 | 21.26 | 32.11 | 39.03 | 47.30 | 53.03 | 63.13 | 63.84 | 61.94 | 55.73 | 39.07 | a | 32.62 | a | 24.61 | 44.47 | |||||||||||
| 1926 | 24.03 | 32.43 | 33.48 | 40.53 | 51.03 | 61.50 | ----- | z | 64.03 | 57.87 | 45.71 | 33.77 | 26.88 | f | 44.44 | |||||||||||
| 1927 | 32.03 | 34.21 | 37.29 | 44.00 | 57.23 | 59.47 | 65.03 | 61.00 | 56.10 | 47.32 | 39.47 | 23.32 | 46.37 | |||||||||||||
| 1928 | 25.68 | 27.66 | 38.74 | 43.50 | 53.94 | 60.77 | 67.23 | 64.10 | 56.50 | 48.61 | 33.77 | 29.81 | 45.86 | |||||||||||||
| 1929 | 20.94 | 17.29 | 32.74 | 41.40 | 48.55 | 59.50 | 63.94 | 63.39 | 55.30 | 43.87 | 26.10 | 23.45 | 41.37 | |||||||||||||
| 1930 | 15.06 | 35.14 | 31.87 | 49.40 | 50.77 | 64.43 | 67.61 | 67.16 | 58.27 | 47.87 | 36.70 | 24.77 | 45.76 | |||||||||||||
| 1931 | 26.19 | 34.57 | 33.58 | 44.60 | 49.65 | 64.03 | 66.52 | 63.06 | 65.07 | 48.29 | 35.10 | 28.94 | 46.63 | |||||||||||||
| 1932 | 25.81 | 35.97 | 28.13 | 44.50 | 54.23 | 60.97 | 69.23 | 65.55 | 56.50 | 45.48 | 34.10 | 21.23 | 45.14 | |||||||||||||
| 1933 | 30.00 | 22.18 | 36.06 | 40.57 | 51.65 | 64.80 | 68.23 | 65.10 | 63.13 | 48.87 | 37.47 | 33.68 | 46.81 | |||||||||||||
| 1934 | 28.52 | 29.54 | 33.19 | 46.03 | 59.45 | 67.93 | 72.77 | 71.77 | 59.07 | 52.30 | a | 39.00 | 30.45 | 49.17 | ||||||||||||
| 1935 | 31.68 | 32.82 | 41.13 | 46.10 | 51.19 | 63.50 | 69.39 | 67.55 | 56.77 | 47.77 | 34.97 | 29.16 | 47.67 | |||||||||||||
| 1936 | 27.13 | 25.86 | 40.03 | 45.27 | 59.03 | 67.43 | 69.32 | 68.81 | 58.63 | 45.74 | 32.93 | 30.94 | 47.59 | |||||||||||||
| 1937 | 20.42 | 28.14 | 34.29 | 45.04 | b | 56.13 | 63.77 | 67.94 | 69.94 | 62.33 | 48.94 | 34.97 | 28.29 | 46.68 | ||||||||||||
| 1938 | 29.16 | 32.57 | 41.55 | 44.80 | 53.03 | 61.60 | 66.65 | 69.06 | 59.33 | 52.68 | f | 30.47 | 29.87 | 47.10 | ||||||||||||
| 1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.00 | z | 9999.00 | |
| 1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.00 | z | ----- | z | 9999.00 | |
| 1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.00 | z | ----- | z | ----- | z | 9999.00 | |
| 1942 | ----- | z | ----- | z | ----- | z | 30.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 25.97 | 29.86 | 35.20 | 44.28 | 53.45 | 62.72 | 67.48 | 65.91 | 58.67 | 46.58 | 35.07 | 27.28 | 46.31 | |||||||||||||
| S.D. | 4.79 | 4.68 | 3.99 | 2.35 | 3.06 | 2.31 | 2.39 | 3.04 | 3.08 | 3.35 | 3.50 | 3.76 | 1.87 | |||||||||||||
| SKEW | -0.34 | -1.05 | 0.06 | 0.08 | 0.35 | 0.56 | -0.11 | 0.09 | 0.78 | -0.81 | -0.44 | 0.03 | -0.82 | |||||||||||||
| MAX | 33.13 | 35.97 | 41.55 | 49.40 | 59.45 | 67.93 | 72.77 | 71.77 | 65.07 | 52.30 | 40.70 | 34.35 | 49.17 | |||||||||||||
| MIN | 15.06 | 17.29 | 28.13 | 40.53 | 48.55 | 59.47 | 62.84 | 61.00 | 54.73 | 38.94 | 26.10 | 20.52 | 41.37 | |||||||||||||
| NO YRS | 19 | 19 | 20 | 20 | 21 | 22 | 20 | 22 | 22 | 22 | 24 | 21 | 17 | |||||||||||||