| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.20 | o | 68.74 | 64.69 | 57.97 | 49.09 | d | 41.33 | f | 35.80 | p | 60.12 | ||||
| 1938 | 29.73 | 31.78 | a | 35.85 | 46.33 | 52.26 | 61.88 | d | 68.34 | 64.26 | 58.28 | e | 47.50 | 30.00 | t | 27.50 | v | 49.62 | ||||||||
| 1939 | 31.83 | g | 27.80 | 40.11 | 50.00 | 55.90 | 57.08 | 69.03 | 68.05 | 58.64 | a | 48.21 | 37.05 | 36.13 | a | 49.82 | ||||||||||
| 1940 | 30.00 | 36.34 | a | 42.05 | 46.03 | 56.61 | 64.62 | 67.63 | 68.05 | 56.20 | 49.29 | 33.18 | 32.34 | 48.53 | ||||||||||||
| 1941 | 29.84 | 34.55 | 41.03 | 44.45 | 53.27 | 58.35 | d | 68.37 | 64.03 | a | 52.53 | 46.16 | 38.57 | b | 37.82 | q | 48.29 | |||||||||
| 1942 | 20.76 | 27.52 | 36.05 | 46.87 | 48.60 | 56.95 | 69.00 | 65.98 | 57.90 | e | 48.69 | d | 37.88 | f | 33.07 | b | 46.49 | |||||||||
| 1943 | 25.44 | 32.91 | 37.52 | 49.00 | 49.84 | 54.57 | 66.33 | b | 64.40 | 61.98 | g | 47.11 | d | 36.85 | f | 30.09 | b | 45.72 | ||||||||
| 1944 | 22.00 | 32.24 | f | 39.22 | d | 43.57 | g | 53.22 | k | 56.02 | f | 63.79 | n | 62.34 | f | 58.80 | j | 52.43 | d | 33.57 | 26.58 | 34.76 | ||||
| 1945 | 28.85 | 35.20 | 36.27 | 43.67 | 53.32 | 57.13 | 69.19 | 65.40 | 55.70 | 50.69 | 36.52 | 29.15 | 46.76 | |||||||||||||
| 1946 | 25.98 | 30.21 | 40.60 | 46.72 | 52.42 | 58.32 | 67.32 | 66.11 | 55.30 | 42.02 | 34.15 | 33.18 | 46.03 | |||||||||||||
| 1947 | 24.03 | 36.52 | 41.02 | 45.80 | 57.73 | 55.12 | 67.19 | 63.37 | 57.47 | 48.13 | 34.80 | 29.44 | 46.72 | |||||||||||||
| 1948 | 31.21 | 30.36 | 34.32 | 41.68 | 50.71 | 61.60 | a | 64.48 | 63.15 | 55.15 | 45.95 | a | ----- | z | 22.48 | 45.55 | ||||||||||
| 1949 | 11.26 | 29.48 | 37.95 | a | 48.63 | 55.85 | 61.25 | 67.92 | a | 66.03 | 57.56 | e | 42.14 | c | 41.78 | 28.95 | 45.73 | |||||||||
| 1950 | 23.19 | d | 31.29 | b | 35.33 | b | 43.15 | c | 51.15 | a | 58.10 | 67.43 | a | 66.16 | c | 56.79 | a | 50.23 | c | 39.02 | c | 35.57 | a | 46.45 | ||
| 1951 | 25.55 | b | 32.88 | b | 33.17 | a | 47.79 | d | 53.14 | c | 58.65 | d | 67.15 | e | 64.57 | a | 57.94 | f | 42.78 | f | 33.50 | 25.55 | 44.20 | |||
| 1952 | 22.11 | 27.09 | 30.88 | f | 48.65 | c | 53.35 | 57.17 | 67.98 | 66.52 | 59.28 | 51.67 | d | 30.18 | 28.68 | 46.61 | ||||||||||
| 1953 | 37.84 | 34.36 | f | 38.53 | 42.58 | 46.82 | 54.38 | 67.53 | 64.13 | 60.05 | 47.97 | a | 40.74 | a | 31.42 | 48.36 | ||||||||||
| 1954 | 32.40 | 37.00 | 35.22 | b | 46.06 | c | 54.84 | f | 55.69 | c | 68.17 | a | 61.78 | a | 57.23 | f | 44.89 | i | 40.82 | 26.98 | 44.90 | |||||
| 1955 | 21.76 | 26.98 | 33.84 | 39.02 | 49.47 | b | 61.95 | b | 64.48 | 67.71 | 60.97 | j | 48.12 | b | 32.52 | c | 32.13 | a | 43.45 | |||||||
| 1956 | 30.24 | 25.21 | a | 37.92 | 46.69 | a | 54.56 | 58.93 | 67.77 | a | 63.48 | f | 57.28 | a | 45.33 | e | 34.17 | c | 28.41 | b | 44.23 | |||||
| 1957 | 18.35 | a | 30.57 | a | 39.06 | e | 44.88 | a | 53.11 | 61.46 | c | 65.82 | f | 63.44 | d | 58.94 | d | 44.44 | f | 32.70 | g | 32.37 | a | 44.69 | ||
| 1958 | 30.82 | a | 38.98 | c | 35.19 | b | 43.28 | a | 59.02 | 60.46 | b | 67.81 | b | 69.34 | b | 56.52 | b | 50.14 | b | 37.83 | 35.93 | b | 48.78 | |||
| 1959 | 34.11 | 33.25 | 37.30 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.89 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 26.45 | 31.80 | 37.50 | 45.56 | 53.01 | 58.68 | 67.59 | 65.36 | 57.15 | 47.94 | 36.15 | 30.44 | 47.00 | |||||||||||||
| S.D. | 6.04 | 3.84 | 2.58 | 2.75 | 3.17 | 2.81 | 1.28 | 1.93 | 1.83 | 2.78 | 3.40 | 3.66 | 1.19 | |||||||||||||
| SKEW | -0.47 | 0.11 | 0.10 | -0.51 | 0.01 | 0.26 | -1.29 | 0.33 | -0.75 | -0.65 | 0.14 | -0.23 | 0.62 | |||||||||||||
| MAX | 37.84 | 38.98 | 42.05 | 50.00 | 59.02 | 64.62 | 69.19 | 69.34 | 60.05 | 52.43 | 41.78 | 36.13 | 48.78 | |||||||||||||
| MIN | 11.26 | 25.21 | 33.17 | 39.02 | 46.82 | 54.38 | 64.48 | 61.78 | 52.53 | 42.02 | 30.18 | 22.48 | 45.73 | |||||||||||||
| NO YRS | 21 | 20 | 21 | 20 | 19 | 20 | 20 | 20 | 17 | 19 | 16 | 19 | 7 | |||||||||||||