| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1929 | ----- | z | ----- | z | 41.06 | 41.42 | 53.39 | 57.50 | 80.23 | 77.94 | 66.82 | 56.08 | 38.77 | 38.66 | 55.19 | |||||||||||
| 1930 | 20.77 | 37.77 | 42.03 | 49.90 | 50.38 | a | 61.32 | 69.18 | 66.39 | 57.03 | 48.15 | 37.43 | 28.47 | 47.40 | ||||||||||||
| 1931 | 30.66 | 36.54 | 41.53 | 47.73 | 57.97 | 61.57 | 74.05 | 72.16 | 58.02 | 50.98 | 34.85 | 28.47 | 49.54 | |||||||||||||
| 1932 | 25.79 | 24.93 | 40.73 | 44.77 | 53.15 | 63.45 | 67.73 | 67.03 | ----- | z | ----- | z | ----- | z | ----- | z | 48.45 | |||||||||
| 1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1936 | ----- | z | ----- | z | 41.34 | 48.80 | 55.84 | 62.60 | 72.19 | 70.08 | 59.81 | c | 53.00 | b | 39.25 | 30.77 | 53.37 | |||||||||
| 1937 | 14.44 | 29.20 | 38.97 | 44.38 | 56.97 | 61.20 | 71.18 | 67.95 | 62.32 | 50.53 | 40.33 | 35.92 | 47.78 | |||||||||||||
| 1938 | 32.18 | 31.16 | 34.68 | a | 46.63 | 53.10 | ----- | z | 69.60 | 68.71 | 63.70 | 48.92 | 34.28 | 33.94 | 46.99 | |||||||||||
| 1939 | 32.60 | 29.30 | 41.94 | 52.73 | 56.90 | 60.30 | 71.21 | 72.05 | 61.47 | 50.79 | 41.20 | 38.48 | 50.75 | |||||||||||||
| 1940 | 33.29 | 37.28 | 43.02 | 48.43 | 59.08 | a | 68.08 | 69.71 | 71.73 | a | 57.77 | d | 52.06 | 36.70 | 34.65 | 50.98 | ||||||||||
| 1941 | 32.61 | 37.41 | 42.81 | 45.53 | 53.82 | a | 58.47 | 70.37 | 65.18 | a | 53.48 | e | 48.34 | 41.98 | 33.82 | 48.65 | ||||||||||
| 1942 | 26.47 | 31.79 | 37.73 | 46.38 | 49.00 | 57.96 | b | 70.69 | 69.13 | 61.26 | c | 51.79 | b | 39.90 | 34.82 | 48.08 | ||||||||||
| 1943 | 29.68 | 35.07 | 40.97 | 50.34 | a | 52.05 | a | 55.38 | 68.84 | 65.47 | 65.32 | 49.94 | 38.05 | 31.45 | 48.55 | |||||||||||
| 1944 | 24.08 | 31.86 | 38.15 | 43.65 | 53.53 | 55.80 | 67.24 | 66.16 | 60.93 | 53.95 | 33.85 | 32.18 | 46.78 | |||||||||||||
| 1945 | 31.58 | 35.96 | 36.90 | 44.95 | 52.95 | 58.35 | 70.94 | 68.63 | 59.53 | 53.66 | 38.68 | 31.06 | 48.60 | |||||||||||||
| 1946 | 30.15 | 32.80 | 39.87 | 49.38 | 54.92 | 59.73 | 69.19 | 70.05 | 58.72 | 45.58 | 38.05 | 33.84 | 48.52 | |||||||||||||
| 1947 | 27.31 | 39.82 | 43.29 | 47.97 | 59.97 | 57.88 | 68.05 | 65.52 | 60.80 | 51.58 | 35.13 | 32.32 | 49.14 | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.16 | 66.03 | 59.23 | 50.92 | 36.73 | 23.27 | i | 56.02 | ||||||
| 1949 | 14.00 | 28.77 | 37.73 | 50.53 | 54.79 | 61.22 | 70.29 | 67.44 | 62.67 | 46.50 | 45.27 | 33.16 | 47.70 | |||||||||||||
| 1950 | 28.24 | 35.52 | 37.06 | 46.80 | 52.50 | 59.10 | 70.92 | 70.63 | 62.12 | 53.27 | 44.03 | 39.42 | 49.97 | |||||||||||||
| 1951 | 31.16 | 35.43 | 36.52 | 51.27 | 53.37 | 63.97 | a | 72.39 | 69.08 | 63.70 | 46.80 | a | 43.08 | 27.92 | 49.56 | |||||||||||
| 1952 | 27.24 | 32.64 | 34.27 | ----- | z | ----- | z | 52.33 | 70.15 | 69.26 | 65.02 | 57.16 | 36.43 | 32.98 | 47.75 | |||||||||||
| 1953 | 39.48 | 36.71 | 40.95 | 45.35 | 46.21 | ----- | z | 71.69 | j | 66.16 | 66.00 | 50.85 | 43.32 | 35.00 | 47.00 | |||||||||||
| 1954 | 34.90 | 40.29 | 37.71 | 49.15 | j | 56.53 | 57.75 | 70.18 | 63.69 | 59.05 | 50.31 | 43.47 | 27.90 | 49.25 | ||||||||||||
| 1955 | 24.35 | 29.00 | 37.94 | 41.28 | 52.08 | 63.23 | 65.71 | 71.05 | b | 61.17 | 52.37 | 38.28 | 34.73 | 47.60 | ||||||||||||
| 1956 | 33.71 | 24.59 | a | 39.29 | 46.68 | 54.03 | 59.90 | 69.74 | 65.39 | 61.05 | 46.40 | 36.62 | 30.34 | 47.31 | ||||||||||||
| 1957 | 20.92 | 32.86 | 38.82 | 43.87 | 51.89 | 61.80 | 67.06 | n | 63.25 | w | 59.17 | j | 44.16 | 34.83 | 34.53 | k | 41.14 | |||||||||
| 1958 | 27.20 | u | 38.50 | d | 33.52 | 41.75 | 57.18 | 58.05 | j | 63.00 | z | ----- | z | ----- | z | 48.90 | z | 41.72 | c | 39.30 | k | 42.53 | ||||
| 1959 | 35.06 | g | 33.10 | r | 41.73 | c | 50.20 | e | 49.43 | a | 65.56 | e | 74.05 | c | 67.78 | a | 57.39 | b | 51.60 | k | 42.06 | d | 30.23 | k | 56.03 | |
| 1960 | 26.78 | d | 31.33 | 42.75 | c | 44.73 | d | 50.17 | j | 63.86 | i | 75.22 | k | 67.75 | e | 62.43 | o | 52.91 | t | ----- | z | ----- | z | 42.67 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 28.02 | 33.46 | 39.40 | 46.75 | 53.89 | 60.19 | 70.44 | 68.46 | 60.97 | 50.56 | 39.05 | 33.06 | 48.64 | |||||||||||||
| S.D. | 6.11 | 4.30 | 2.75 | 3.12 | 3.18 | 3.45 | 2.85 | 2.98 | 3.13 | 3.19 | 3.28 | 3.30 | 1.21 | |||||||||||||
| SKEW | -0.70 | -0.37 | -0.46 | -0.03 | -0.22 | 0.05 | 1.52 | 1.10 | -0.12 | -0.05 | 0.17 | 0.17 | 0.44 | |||||||||||||
| MAX | 39.48 | 40.29 | 43.29 | 52.73 | 59.97 | 68.08 | 80.23 | 77.94 | 66.82 | 57.16 | 45.27 | 39.42 | 50.98 | |||||||||||||
| MIN | 14.00 | 24.59 | 33.52 | 41.28 | 46.21 | 52.33 | 65.71 | 63.69 | 53.48 | 44.16 | 33.85 | 27.90 | 46.78 | |||||||||||||
| NO YRS | 24 | 25 | 28 | 26 | 26 | 24 | 25 | 27 | 25 | 25 | 27 | 23 | 17 | |||||||||||||