| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1916 | ----- | z | ----- | z | ----- | z | ----- | z | 44.50 | o | 50.27 | 55.65 | 57.26 | 50.13 | 38.16 | 29.56 | n | ----- | z | 50.29 | ||||||
| 1917 | ----- | z | ----- | z | 33.94 | n | 40.11 | b | 46.32 | 50.37 | 59.00 | 58.48 | 53.20 | 41.27 | a | ----- | z | ----- | z | 49.82 | ||||||
| 1918 | ----- | z | ----- | z | ----- | z | 38.43 | 43.29 | 55.73 | 58.68 | 56.03 | a | 52.80 | 44.87 | ----- | z | ----- | z | 49.98 | |||||||
| 1919 | ----- | z | ----- | z | 36.26 | 40.63 | 45.19 | 49.33 | 59.07 | a | 58.35 | 48.07 | 38.19 | ----- | z | ----- | z | 46.89 | ||||||||
| 1920 | ----- | z | ----- | z | 36.03 | 38.17 | ----- | z | 50.80 | 59.84 | 58.26 | 50.63 | 40.94 | ----- | z | ----- | z | 47.81 | ||||||||
| 1921 | ----- | z | ----- | z | 37.42 | 38.63 | 45.32 | 55.80 | 56.87 | 58.53 | a | 46.50 | 42.29 | ----- | z | ----- | z | 47.67 | ||||||||
| 1922 | ----- | z | ----- | z | 33.03 | 38.27 | 44.26 | 57.07 | 61.43 | a | 59.58 | ----- | z | 43.16 | ----- | z | ----- | z | 48.11 | |||||||
| 1923 | ----- | z | ----- | z | 34.81 | 40.37 | 46.81 | 51.63 | 59.81 | 59.50 | a | 51.03 | 40.87 | ----- | z | ----- | z | 48.10 | ||||||||
| 1924 | ----- | z | ----- | z | 33.39 | 38.30 | 48.35 | 53.70 | 59.94 | 57.06 | 50.13 | 42.71 | ----- | z | ----- | z | 47.95 | |||||||||
| 1925 | ----- | z | ----- | z | 36.06 | 42.37 | 48.42 | 55.28 | a | 61.55 | 57.71 | 51.10 | 39.65 | ----- | z | ----- | z | 49.02 | ||||||||
| 1926 | ----- | z | ----- | z | 36.65 | 43.57 | 47.00 | 55.10 | 61.55 | 57.90 | 45.00 | 42.68 | ----- | z | ----- | z | 48.68 | |||||||||
| 1927 | ----- | z | ----- | z | 34.13 | 36.83 | 43.19 | 54.43 | 58.50 | a | 58.71 | 50.93 | 44.45 | ----- | z | ----- | z | 47.65 | ||||||||
| 1928 | ----- | z | ----- | z | 37.43 | a | 39.10 | 47.60 | a | 52.57 | 61.71 | 58.19 | 50.73 | 42.61 | ----- | z | ----- | z | 48.74 | |||||||
| 1929 | ----- | z | ----- | z | 36.29 | 38.07 | a | 45.74 | 52.07 | 56.45 | 59.87 | 47.63 | 41.39 | ----- | z | ----- | z | 47.19 | ||||||||
| 1930 | ----- | z | ----- | z | 36.74 | 44.57 | 46.68 | 50.30 | 59.97 | 59.74 | 51.63 | 39.42 | ----- | z | ----- | z | 48.63 | |||||||||
| 1931 | ----- | z | ----- | z | 35.90 | 41.03 | 48.48 | 53.48 | a | 58.19 | 57.77 | 50.57 | 40.90 | ----- | z | ----- | z | 48.29 | ||||||||
| 1932 | ----- | z | ----- | z | 36.77 | 42.20 | 45.90 | 53.70 | 56.23 | 57.65 | 49.33 | 43.29 | ----- | z | ----- | z | 48.13 | |||||||||
| 1933 | ----- | z | ----- | z | 34.58 | 40.10 | 43.84 | 52.57 | 58.55 | 58.42 | 47.77 | 44.23 | ----- | z | ----- | z | 47.51 | |||||||||
| 1934 | ----- | z | ----- | z | 39.33 | a | 45.77 | 48.58 | 52.90 | 58.16 | 57.39 | 48.50 | 44.06 | ----- | z | ----- | z | 49.34 | ||||||||
| 1935 | ----- | z | ----- | z | 32.52 | 36.67 | 45.26 | 53.53 | 59.19 | 56.39 | 52.83 | 40.58 | ----- | z | ----- | z | 47.12 | |||||||||
| 1936 | ----- | z | ----- | z | 34.26 | 44.07 | c | 50.86 | b | 55.17 | 60.10 | 58.77 | 48.67 | 41.35 | ----- | z | ----- | z | 49.16 | |||||||
| 1937 | ----- | z | ----- | z | 35.58 | 40.03 | a | 46.16 | 53.63 | 61.45 | 56.55 | 51.73 | 44.23 | ----- | z | ----- | z | 48.67 | ||||||||
| 1938 | ----- | z | ----- | z | 35.48 | 40.43 | 45.65 | 55.07 | 63.23 | 57.19 | 55.48 | a | 41.84 | ----- | z | ----- | z | 49.30 | ||||||||
| 1939 | ----- | z | ----- | z | 37.00 | 41.57 | 48.16 | 52.37 | 60.45 | 59.00 | 51.67 | 42.68 | ----- | z | ----- | z | 49.11 | |||||||||
| 1940 | ----- | z | ----- | z | 39.23 | 44.27 | 49.19 | 55.67 | 61.35 | 58.45 | 55.27 | 46.48 | ----- | z | ----- | z | 51.24 | |||||||||
| 1941 | ----- | z | ----- | z | 36.16 | 42.53 | 48.74 | 53.17 | 63.03 | a | 59.16 | 49.90 | 42.65 | ----- | z | ----- | z | 49.42 | ||||||||
| 1942 | ----- | z | ----- | z | 33.67 | p | 43.50 | p | 46.00 | 51.87 | o | 59.92 | r | 60.21 | q | 51.24 | m | 43.85 | k | ----- | z | ----- | z | 46.00 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.00 | 0.00 | 35.87 | 40.64 | 46.60 | 53.30 | 59.61 | 58.15 | 50.45 | 42.11 | 0.00 | 0.00 | 0.00 | |||||||||||||
| S.D. | 0.00 | 0.00 | 1.73 | 2.51 | 1.95 | 2.03 | 2.01 | 1.03 | 2.48 | 2.02 | 0.00 | 0.00 | 0.00 | |||||||||||||
| SKEW | 0.00 | 0.00 | 0.01 | 0.33 | 0.10 | -0.21 | -0.16 | -0.27 | 0.00 | -0.10 | 0.00 | 0.00 | 0.00 | |||||||||||||
| MAX | ----- | - | ----- | 39.33 | 45.77 | 50.86 | 57.07 | 63.23 | 59.87 | 55.48 | 46.48 | - | ----- | - | ----- | -9999.00 | ||||||||||
| MIN | ----- | ----- | 32.52 | 36.67 | 43.19 | 49.33 | 55.65 | 56.03 | 45.00 | 38.16 | ----- | ----- | 9999.00 | |||||||||||||
| NO YRS | 0 | 0 | 23 | 25 | 25 | 26 | 26 | 26 | 25 | 26 | 0 | 0 | 0 | |||||||||||||