| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.61 | 60.34 | 52.82 | 39.81 | 25.52 | 18.92 | 43.84 | |||||||
| 1923 | 25.26 | 23.69 | a | 36.37 | 43.02 | 51.00 | 53.72 | 65.37 | 64.48 | 57.48 | 46.08 | 35.68 | 24.87 | 43.92 | ||||||||||||
| 1924 | 18.35 | 36.64 | a | 34.14 | b | 42.77 | 55.95 | 59.00 | 64.48 | a | 61.69 | 54.02 | 43.35 | 33.68 | 17.14 | b | 43.44 | |||||||||
| 1925 | 23.89 | 34.71 | d | 42.81 | o | 45.68 | b | 53.75 | y | 57.91 | b | 69.23 | 62.12 | g | 52.27 | d | 44.34 | c | 33.70 | 30.37 | d | 43.57 | ||||
| 1926 | 23.48 | a | 35.13 | a | 41.52 | 49.05 | 50.70 | a | 62.92 | 68.84 | 64.35 | 48.30 | 44.75 | a | 39.74 | e | 23.36 | c | 46.01 | |||||||
| 1927 | 24.53 | a | 29.21 | g | 37.52 | 41.85 | 48.53 | a | 59.07 | c | 65.02 | 61.65 | d | 51.72 | e | 43.92 | g | 40.02 | i | 19.38 | e | 45.48 | ||||
| 1928 | 25.45 | j | 27.67 | k | 39.24 | 41.60 | j | 57.66 | f | 54.70 | t | 69.67 | h | 61.74 | j | 56.10 | e | 43.88 | e | ----- | z | 18.91 | h | 46.41 | ||
| 1929 | 14.97 | 16.77 | 37.27 | 38.78 | 50.82 | a | 55.88 | 65.58 | 66.27 | 50.50 | 46.08 | 31.97 | 32.45 | b | 42.28 | |||||||||||
| 1930 | 11.06 | 34.32 | 37.47 | p | 46.81 | a | 48.98 | 56.34 | a | 66.94 | 65.31 | 54.20 | 44.17 | e | 28.95 | 18.11 | 43.20 | |||||||||
| 1931 | 22.08 | 28.93 | 37.92 | 43.90 | 54.61 | 59.10 | 69.63 | 65.94 | 52.77 | 44.35 | 31.15 | c | 20.45 | j | 46.40 | |||||||||||
| 1932 | 18.11 | h | 17.02 | 36.74 | 43.13 | 50.40 | 60.32 | 64.02 | 61.24 | 56.47 | 43.61 | 36.97 | 18.97 | 44.44 | ||||||||||||
| 1933 | 18.50 | 14.96 | 32.94 | 42.40 | 45.87 | 59.82 | 67.65 | 63.50 | 52.08 | 47.95 | 35.62 | 34.48 | 42.98 | |||||||||||||
| 1934 | 35.13 | d | 38.44 | b | 44.89 | 50.27 | 55.50 | 57.63 | 66.98 | 66.26 | 53.80 | 47.77 | 37.37 | 21.94 | 48.00 | |||||||||||
| 1935 | 21.35 | 25.52 | 32.31 | 43.08 | 50.05 | 58.82 | 64.44 | 64.05 | 57.77 | 42.32 | c | 27.29 | a | 25.53 | 42.71 | |||||||||||
| 1936 | 19.06 | 21.84 | 31.21 | 47.67 | 54.81 | 59.13 | 68.34 | 65.40 | 54.11 | h | 46.85 | 30.58 | 25.24 | 42.74 | ||||||||||||
| 1937 | 5.31 | 23.62 | 36.66 | 42.08 | 51.93 | a | 57.65 | 68.15 | 62.08 | 56.85 | 47.65 | 38.12 | 33.05 | 43.60 | ||||||||||||
| 1938 | 28.13 | 26.32 | 34.61 | 45.55 | 50.23 | 60.45 | 67.65 | 62.29 | 59.12 | 46.21 | 30.68 | 29.03 | 45.02 | |||||||||||||
| 1939 | 27.98 | 22.79 | 37.81 | 47.07 | 53.92 | 55.57 | 68.42 | 65.26 | 55.97 | 44.94 | 35.02 | 33.18 | 45.66 | |||||||||||||
| 1940 | 28.11 | 32.07 | 40.77 | 45.28 | 55.00 | 63.13 | 65.47 | 66.69 | 56.18 | 47.82 | 31.17 | 30.42 | 46.84 | |||||||||||||
| 1941 | 27.03 | 30.88 | 40.19 | 43.93 | 52.11 | 56.53 | a | 67.63 | 63.00 | 50.38 | 44.52 | 37.45 | 30.45 | 45.34 | ||||||||||||
| 1942 | 18.06 | 22.38 | 31.10 | b | 45.82 | 48.65 | 56.08 | 68.02 | a | 65.81 | 56.82 | 46.94 | 34.60 | 27.34 | 43.47 | |||||||||||
| 1943 | 19.79 | 28.45 | 36.23 | 48.82 | 49.05 | 53.91 | a | 65.37 | a | 62.81 | 61.66 | a | 46.45 | 35.98 | 29.48 | 44.83 | ||||||||||
| 1944 | 18.31 | 27.86 | 36.61 | 43.28 | 51.44 | 55.67 | a | 64.47 | 61.76 | 56.83 | 50.08 | 31.30 | 23.65 | 43.44 | ||||||||||||
| 1945 | 25.23 | 32.23 | 35.29 | 42.73 | 52.03 | 56.07 | 67.77 | 64.65 | 53.95 | 48.18 | 33.85 | 25.32 | 44.77 | |||||||||||||
| 1946 | 21.29 | 25.77 | 38.27 | 46.75 | 50.89 | 56.97 | 66.16 | 64.97 | 52.33 | 38.87 | 33.07 | 31.68 | 43.92 | |||||||||||||
| 1947 | 21.84 | 36.00 | 41.40 | 44.75 | 57.19 | 55.62 | 64.68 | 62.31 | 55.97 | 46.52 | 32.63 | 25.74 | 45.39 | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.94 | 61.05 | 53.88 | 44.78 | a | 32.55 | 17.82 | c | 45.67 | |||||
| 1949 | 4.33 | a | 24.24 | a | 37.27 | a | 47.20 | 55.15 | 58.98 | a | 65.97 | a | 63.65 | a | 57.43 | c | 39.90 | a | 40.11 | b | 23.82 | a | 43.17 | |||
| 1950 | 16.97 | b | 24.65 | a | 33.53 | a | 42.50 | 49.60 | b | 57.19 | a | 66.22 | b | 65.34 | 56.45 | 48.10 | a | 36.82 | 33.10 | b | 44.21 | |||||
| 1951 | 21.11 | 29.70 | 31.84 | 45.97 | a | 51.48 | a | 57.29 | b | 66.59 | b | 63.81 | 57.39 | b | 42.84 | b | 31.08 | 22.00 | c | 43.42 | ||||||
| 1952 | 17.48 | a | 20.22 | 26.65 | 46.83 | c | 51.61 | c | 56.37 | 65.28 | b | 63.34 | b | 58.12 | b | 49.97 | a | 29.52 | c | 22.50 | a | 42.32 | ||||
| 1953 | 32.79 | b | 32.72 | a | 36.14 | b | 41.33 | d | 45.87 | 52.41 | c | 65.56 | 62.81 | b | 58.46 | c | 45.64 | b | 38.22 | 27.50 | b | 44.95 | ||||
| 1954 | 29.60 | 35.39 | a | 34.29 | b | 45.22 | a | 53.31 | e | 54.72 | e | 64.78 | d | 58.98 | f | 53.13 | ----- | z | ----- | z | ----- | z | 46.31 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 21.42 | 27.70 | 36.23 | 44.78 | 51.61 | 57.48 | 66.38 | 63.74 | 55.04 | 45.31 | 33.68 | 25.89 | 44.33 | |||||||||||||
| S.D. | 7.02 | 6.42 | 3.76 | 2.60 | 2.85 | 2.49 | 1.63 | 1.77 | 2.93 | 2.74 | 3.62 | 5.24 | 1.44 | |||||||||||||
| SKEW | -0.52 | -0.18 | -0.15 | 0.04 | -0.02 | 0.33 | 0.29 | -0.12 | -0.16 | -0.54 | -0.18 | -0.05 | 0.71 | |||||||||||||
| MAX | 35.13 | 38.44 | 44.89 | 50.27 | 57.19 | 63.13 | 69.63 | 66.69 | 61.66 | 50.08 | 40.11 | 34.48 | 48.00 | |||||||||||||
| MIN | 4.33 | 14.96 | 26.65 | 38.78 | 45.87 | 52.41 | 63.94 | 60.34 | 48.30 | 38.87 | 25.52 | 17.14 | 42.28 | |||||||||||||
| NO YRS | 29 | 29 | 29 | 30 | 29 | 30 | 32 | 30 | 32 | 31 | 30 | 30 | 23 | |||||||||||||