| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.43 | 63.95 | 60.87 | 57.90 | 43.69 | 43.38 | 28.21 | 50.92 | ||||||||
| 1950 | 22.11 | 34.50 | a | 36.82 | 44.10 | 51.08 | e | 56.80 | c | 65.84 | 65.05 | a | 57.15 | 48.26 | 41.23 | 37.15 | 46.67 | |||||||||
| 1951 | 29.89 | 34.38 | 35.69 | 48.15 | 51.06 | 58.77 | 64.42 | ----- | z | 58.81 | a | 44.37 | 37.10 | 22.79 | 44.13 | |||||||||||
| 1952 | 24.39 | 30.07 | 34.18 | 46.60 | 51.76 | 54.45 | 64.66 | 59.74 | 60.33 | c | 49.85 | h | 34.57 | 27.13 | 44.35 | |||||||||||
| 1953 | 35.38 | a | 35.89 | 37.40 | 42.27 | 45.34 | 50.93 | a | 61.55 | 56.98 | h | 59.12 | 46.92 | 41.58 | 33.53 | 44.54 | ||||||||||
| 1954 | 30.20 | f | 38.14 | 35.69 | 45.10 | 53.92 | 51.98 | 62.12 | e | 56.32 | 50.58 | 45.68 | 40.06 | c | 30.05 | 46.33 | ||||||||||
| 1955 | 23.83 | e | 29.80 | a | 37.08 | 38.17 | 48.50 | 53.98 | e | 58.48 | e | 62.12 | e | 55.48 | a | 47.77 | 33.85 | 32.08 | 43.43 | |||||||
| 1956 | 31.15 | 26.72 | d | 36.17 | b | 45.60 | 52.77 | 54.12 | 63.40 | 58.42 | 54.75 | 44.11 | 35.72 | 30.23 | 44.43 | |||||||||||
| 1957 | 24.08 | 32.39 | 39.19 | 42.87 | 49.97 | 57.48 | 59.76 | 57.48 | 59.88 | i | 43.50 | 34.88 | 33.69 | 43.21 | ||||||||||||
| 1958 | 32.89 | 39.17 | m | 35.05 | 41.78 | 55.26 | 56.93 | 64.55 | 65.37 | 55.08 | 50.50 | 39.12 | 36.94 | 48.50 | ||||||||||||
| 1959 | 35.77 | 33.00 | 37.56 | 45.45 | 46.63 | 57.42 | 65.69 | 61.02 | 53.58 | 47.73 | 36.82 | 27.00 | 45.64 | |||||||||||||
| 1960 | 28.58 | 32.90 | 41.18 | 42.35 | 47.76 | 59.10 | 66.34 | 60.10 | 58.43 | 47.42 | 35.75 | 31.95 | 45.99 | |||||||||||||
| 1961 | 33.63 | 36.36 | 37.21 | 42.63 | 48.26 | 61.53 | 64.05 | 65.64 | b | 52.26 | a | 50.53 | l | 34.90 | 29.48 | 46.00 | ||||||||||
| 1962 | 21.26 | 30.12 | 35.79 | 46.80 | 47.60 | 56.43 | 61.61 | 60.10 | 58.27 | 46.94 | 39.61 | b | 34.42 | 44.91 | ||||||||||||
| 1963 | 26.58 | e | 41.09 | 38.35 | 38.79 | a | 51.85 | 54.91 | b | 58.80 | f | 59.68 | a | 60.70 | 47.82 | 37.71 | d | 32.89 | 44.58 | |||||||
| 1964 | 26.81 | 25.21 | c | 34.42 | 41.40 | 47.63 | a | 54.36 | a | 62.90 | 59.94 | 52.62 | 49.69 | 35.50 | 32.71 | 43.60 | ||||||||||
| 1965 | 29.71 | 34.91 | 38.77 | 45.10 | 47.62 | a | 56.12 | 62.95 | 60.55 | 52.63 | 49.97 | a | 37.65 | 27.31 | 45.27 | |||||||||||
| 1966 | 30.71 | c | 32.25 | b | 39.42 | e | 45.25 | 53.74 | 54.58 | d | ----- | z | ----- | z | ----- | z | 46.79 | s | 37.31 | a | 32.40 | b | 40.71 | |||
| 1967 | 32.08 | a | 35.57 | f | 32.91 | o | 35.50 | a | 46.26 | l | 60.23 | f | 65.69 | j | ----- | z | ----- | z | 46.25 | w | 38.92 | e | 21.86 | c | 32.09 | |
| 1968 | 26.77 | a | 38.97 | n | 40.27 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.77 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 28.64 | 32.98 | 37.06 | 43.22 | 50.04 | 56.02 | 63.27 | 60.83 | 56.11 | 46.96 | 37.67 | 30.62 | 44.99 | |||||||||||||
| S.D. | 4.44 | 4.06 | 1.90 | 3.28 | 2.89 | 2.63 | 2.17 | 2.74 | 3.15 | 2.27 | 2.65 | 4.17 | 1.14 | |||||||||||||
| SKEW | -0.04 | -0.05 | 0.39 | -0.74 | 0.20 | 0.04 | -0.65 | 0.49 | -0.18 | -0.15 | 0.50 | -0.49 | -0.05 | |||||||||||||
| MAX | 35.77 | 41.09 | 41.18 | 48.15 | 55.26 | 61.53 | 66.34 | 65.64 | 60.70 | 50.50 | 43.38 | 37.15 | 46.67 | |||||||||||||
| MIN | 21.26 | 25.21 | 34.18 | 35.50 | 45.34 | 50.93 | 58.48 | 56.32 | 50.58 | 43.50 | 33.85 | 21.86 | 43.43 | |||||||||||||
| NO YRS | 18 | 16 | 17 | 18 | 17 | 18 | 16 | 15 | 16 | 15 | 19 | 19 | 8 | |||||||||||||