| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.60 | o | 87.10 | 84.32 | 78.53 | 67.61 | c | 53.24 | e | 47.47 | p | 74.16 | ||||
| 1938 | 40.55 | 41.52 | a | 45.94 | 63.03 | 68.16 | 77.37 | c | 84.90 | 84.45 | 76.96 | e | 64.35 | 41.90 | t | 41.09 | t | 64.72 | ||||||||
| 1939 | 43.54 | g | 36.71 | 53.00 | 66.67 | 72.26 | 73.30 | 86.87 | 87.65 | 77.70 | 65.65 | 55.37 | 46.81 | 65.63 | ||||||||||||
| 1940 | 38.65 | 43.24 | 54.81 | 59.43 | 73.29 | 82.73 | 85.19 | 87.71 | 71.50 | 64.26 | 42.30 | 43.32 | 62.20 | |||||||||||||
| 1941 | 38.61 | 42.75 | 55.32 | 58.37 | 66.13 | 73.27 | d | 85.26 | 79.53 | a | 67.87 | 60.81 | 50.68 | b | 44.65 | k | 61.69 | |||||||||
| 1942 | 30.13 | 35.71 | 47.13 | 60.27 | 60.52 | 70.77 | 86.52 | 84.39 | 76.48 | e | 67.41 | d | 49.54 | f | 41.03 | b | 60.03 | |||||||||
| 1943 | 34.39 | 42.18 | 49.06 | 62.57 | 64.06 | 68.17 | 84.10 | a | 82.94 | 83.00 | e | 62.11 | c | 49.52 | e | 41.97 | a | 60.34 | ||||||||
| 1944 | 35.35 | 42.48 | d | 54.03 | b | 59.28 | e | 72.42 | g | 70.36 | e | 80.10 | j | 82.23 | 78.76 | i | 72.45 | b | 43.97 | 37.61 | 55.31 | |||||
| 1945 | 39.00 | 45.14 | 48.06 | 58.60 | 66.94 | 72.53 | 88.29 | 84.77 | 74.97 | 68.71 | 46.53 | 38.55 | 61.01 | |||||||||||||
| 1946 | 36.42 | 41.64 | 52.87 | 63.10 | 67.61 | 74.37 | 85.06 | 86.10 | 75.10 | 55.81 | 44.13 | 43.42 | 60.47 | |||||||||||||
| 1947 | 37.10 | 49.11 | 55.71 | 61.73 | 74.81 | 69.50 | 86.16 | 83.13 | 78.00 | 63.55 | 44.50 | 39.74 | 61.92 | |||||||||||||
| 1948 | 43.23 | 43.00 | 45.29 | 55.00 | 65.55 | 76.14 | a | 81.35 | 81.77 | 72.93 | 63.63 | a | ----- | z | 32.29 | 60.02 | ||||||||||
| 1949 | 27.00 | 39.96 | 48.45 | 65.80 | 70.10 | 79.83 | 86.65 | 85.58 | 77.77 | d | 61.21 | c | 58.97 | 39.81 | 61.76 | |||||||||||
| 1950 | 33.21 | c | 42.69 | b | 46.86 | b | 59.41 | c | 69.07 | a | 74.70 | 86.73 | a | 86.93 | c | 75.24 | a | 67.11 | c | 51.74 | c | 45.10 | a | 61.57 | ||
| 1951 | 35.76 | b | 43.04 | b | 46.23 | a | 64.37 | c | 68.82 | c | 75.65 | d | 87.38 | e | 83.80 | a | 79.60 | e | 58.12 | e | 45.50 | 33.94 | 60.18 | |||
| 1952 | 32.32 | 37.41 | 40.36 | f | 65.32 | b | 67.52 | 72.17 | 85.26 | 84.84 | 77.90 | 70.89 | d | 45.57 | 36.71 | 61.45 | ||||||||||
| 1953 | 47.06 | 46.46 | d | 51.77 | 56.97 | 59.55 | 67.67 | 85.52 | 80.87 | 79.70 | 65.57 | a | 52.31 | a | 40.10 | 61.13 | ||||||||||
| 1954 | 40.71 | 47.25 | 47.14 | b | 61.52 | c | 72.27 | e | 69.82 | b | 87.30 | a | 79.23 | a | 76.77 | d | 64.62 | g | 55.13 | 38.10 | 61.39 | |||||
| 1955 | 32.35 | 37.39 | 46.68 | 50.23 | 65.14 | b | 78.43 | 82.10 | 88.61 | 75.30 | 65.86 | b | 44.04 | b | 40.30 | a | 58.87 | |||||||||
| 1956 | 38.32 | 35.29 | a | 50.74 | 61.72 | a | 68.16 | 75.43 | 84.87 | a | 81.92 | f | 77.86 | a | 59.43 | c | 48.33 | c | 39.38 | b | 58.14 | |||||
| 1957 | 28.93 | a | 41.63 | a | 49.11 | c | 57.38 | a | 64.81 | 77.63 | c | 84.27 | e | 81.19 | d | 78.59 | c | 55.16 | f | 44.79 | f | 41.37 | a | 60.49 | ||
| 1958 | 38.20 | a | 47.46 | b | 45.52 | b | 54.83 | a | 75.16 | 74.00 | b | 84.14 | b | 86.28 | b | 74.04 | b | 69.10 | a | 49.43 | 45.90 | b | 62.00 | |||
| 1959 | 42.35 | 41.96 | 51.13 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.15 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 36.65 | 42.00 | 49.76 | 60.27 | 68.00 | 73.99 | 85.48 | 84.11 | 76.47 | 64.68 | 48.96 | 40.29 | 61.04 | |||||||||||||
| S.D. | 4.93 | 3.79 | 3.46 | 4.04 | 4.23 | 3.92 | 1.71 | 2.65 | 3.21 | 4.26 | 4.77 | 3.76 | 1.01 | |||||||||||||
| SKEW | -0.04 | -0.10 | 0.38 | -0.54 | -0.11 | 0.30 | -0.59 | -0.17 | -0.69 | -0.23 | 0.45 | -0.23 | -0.78 | |||||||||||||
| MAX | 47.06 | 49.11 | 55.71 | 66.67 | 75.16 | 82.73 | 88.29 | 88.61 | 83.00 | 72.45 | 58.97 | 46.81 | 62.20 | |||||||||||||
| MIN | 27.00 | 35.29 | 45.29 | 50.23 | 59.55 | 67.67 | 81.35 | 79.23 | 67.87 | 55.81 | 42.30 | 32.29 | 58.87 | |||||||||||||
| NO YRS | 21 | 22 | 21 | 21 | 20 | 21 | 21 | 21 | 21 | 20 | 18 | 19 | 11 | |||||||||||||