| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1916 | ----- | z | ----- | z | ----- | z | ----- | z | 55.31 | o | 63.45 | 68.77 | 72.92 | 64.38 | 51.53 | 38.50 | n | ----- | z | 64.21 | ||||||
| 1917 | ----- | z | ----- | z | 42.41 | n | 48.38 | b | 56.15 | 63.58 | 75.90 | 75.26 | 65.85 | 55.30 | a | ----- | z | ----- | z | 62.92 | ||||||
| 1918 | ----- | z | ----- | z | ----- | z | 51.43 | 55.92 | 71.37 | 74.26 | 69.45 | a | 67.58 | 56.23 | ----- | z | ----- | z | 63.75 | |||||||
| 1919 | ----- | z | ----- | z | 45.31 | 52.03 | 57.69 | 64.62 | 74.82 | a | 73.53 | 61.60 | 49.05 | ----- | z | ----- | z | 59.83 | ||||||||
| 1920 | ----- | z | ----- | z | 44.37 | 47.75 | ----- | z | 63.65 | 75.48 | 72.77 | 62.25 | 51.18 | ----- | z | ----- | z | 59.64 | ||||||||
| 1921 | ----- | z | ----- | z | 46.19 | 49.27 | 58.35 | 69.45 | 72.39 | 73.90 | a | 59.12 | 55.31 | ----- | z | ----- | z | 60.50 | ||||||||
| 1922 | ----- | z | ----- | z | 42.02 | 47.95 | 56.74 | 72.40 | 76.75 | a | 73.60 | ----- | z | 55.53 | ----- | z | ----- | z | 60.71 | |||||||
| 1923 | ----- | z | ----- | z | 45.08 | 52.38 | 58.68 | 63.08 | 75.13 | 74.68 | a | 65.83 | 51.61 | ----- | z | ----- | z | 60.81 | ||||||||
| 1924 | ----- | z | ----- | z | 43.19 | 50.85 | 64.26 | 67.73 | 75.11 | 71.68 | 63.98 | 54.31 | ----- | z | ----- | z | 61.39 | |||||||||
| 1925 | ----- | z | ----- | z | 46.19 | 54.55 | 61.03 | 68.29 | a | 77.69 | 72.97 | 64.33 | 52.23 | ----- | z | ----- | z | 62.16 | ||||||||
| 1926 | ----- | z | ----- | z | 48.39 | 56.67 | 59.63 | 69.95 | 77.06 | 72.50 | 57.83 | 53.89 | ----- | z | ----- | z | 61.99 | |||||||||
| 1927 | ----- | z | ----- | z | 43.45 | 49.05 | 54.90 | 67.52 | 73.85 | a | 73.60 | 60.38 | 54.42 | ----- | z | ----- | z | 59.65 | ||||||||
| 1928 | ----- | z | ----- | z | 46.78 | a | 49.17 | 63.15 | a | 65.98 | 76.66 | 72.44 | 64.63 | 53.73 | ----- | z | ----- | z | 61.57 | |||||||
| 1929 | ----- | z | ----- | z | 46.10 | 49.16 | a | 58.79 | 64.78 | 72.90 | 76.56 | 61.78 | 55.06 | ----- | z | ----- | z | 60.64 | ||||||||
| 1930 | ----- | z | ----- | z | 46.18 | 56.52 | 58.27 | 64.43 | 75.42 | 75.23 | 64.75 | 48.90 | ----- | z | ----- | z | 61.21 | |||||||||
| 1931 | ----- | z | ----- | z | 45.08 | 52.15 | 62.74 | 66.69 | a | 75.00 | 74.06 | 63.78 | 52.79 | ----- | z | ----- | z | 61.54 | ||||||||
| 1932 | ----- | z | ----- | z | 44.27 | 53.15 | 57.95 | 68.28 | 71.05 | 72.00 | 64.72 | 55.03 | ----- | z | ----- | z | 60.81 | |||||||||
| 1933 | ----- | z | ----- | z | 44.45 | 51.40 | 54.76 | 66.35 | 74.69 | 74.03 | 61.03 | 57.03 | ----- | z | ----- | z | 60.47 | |||||||||
| 1934 | ----- | z | ----- | z | 51.35 | a | 59.00 | 63.06 | 67.43 | 74.15 | 74.56 | 62.80 | 55.34 | ----- | z | ----- | z | 63.46 | ||||||||
| 1935 | ----- | z | ----- | z | 43.45 | 47.37 | 59.27 | 68.07 | 74.13 | 71.69 | 68.30 | 52.94 | ----- | z | ----- | z | 60.65 | |||||||||
| 1936 | ----- | z | ----- | z | 44.32 | 55.43 | c | 64.79 | b | 68.77 | 76.16 | 74.55 | 63.70 | 56.82 | ----- | z | ----- | z | 63.07 | |||||||
| 1937 | ----- | z | ----- | z | 45.94 | 49.67 | a | 60.05 | 67.08 | 77.23 | 71.32 | 66.60 | 56.76 | ----- | z | ----- | z | 61.83 | ||||||||
| 1938 | ----- | z | ----- | z | 45.10 | 52.33 | 59.48 | 69.52 | 78.18 | 72.24 | 70.64 | a | 54.15 | ----- | z | ----- | z | 62.70 | ||||||||
| 1939 | ----- | z | ----- | z | 46.06 | 54.68 | 62.52 | 65.40 | 76.16 | 75.81 | 66.47 | 54.85 | ----- | z | ----- | z | 62.74 | |||||||||
| 1940 | ----- | z | ----- | z | 49.97 | 54.27 | 63.48 | 71.47 | 76.05 | 74.39 | 67.23 | 57.29 | ----- | z | ----- | z | 64.27 | |||||||||
| 1941 | ----- | z | ----- | z | 49.50 | 55.47 | 60.13 | 65.17 | 79.22 | a | 73.73 | 61.15 | 52.13 | ----- | z | ----- | z | 62.06 | ||||||||
| 1942 | ----- | z | ----- | z | 45.17 | p | 56.00 | p | 57.84 | 63.90 | o | 75.38 | r | 78.04 | q | 67.29 | m | 57.42 | k | ----- | z | ----- | z | 57.84 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.00 | 0.00 | 45.77 | 52.00 | 59.59 | 67.10 | 75.16 | 73.44 | 64.03 | 53.98 | 0.00 | 0.00 | 0.00 | |||||||||||||
| S.D. | 0.00 | 0.00 | 2.26 | 3.19 | 2.91 | 2.63 | 2.22 | 1.56 | 2.99 | 2.29 | 0.00 | 0.00 | 0.00 | |||||||||||||
| SKEW | 0.00 | 0.00 | 0.84 | 0.36 | 0.17 | 0.25 | -0.89 | -0.33 | 0.00 | -0.61 | 0.00 | 0.00 | 0.00 | |||||||||||||
| MAX | ----- | - | ----- | 51.35 | 59.00 | 64.79 | 72.40 | 79.22 | 76.56 | 70.64 | 57.29 | - | ----- | - | ----- | -9999.00 | ||||||||||
| MIN | ----- | ----- | 42.02 | 47.37 | 54.76 | 63.08 | 68.77 | 69.45 | 57.83 | 48.90 | ----- | ----- | 9999.00 | |||||||||||||
| NO YRS | 0 | 0 | 23 | 25 | 25 | 26 | 26 | 26 | 25 | 26 | 0 | 0 | 0 | |||||||||||||