YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1911 | 46.97 | 38.43 | 53.23 | 57.10 | 65.94 | 80.10 | 74.61 | 77.10 | 74.70 | 56.87 | a | 43.14 | a | 37.03 | 58.77 | |||||||||||
1912 | 43.06 | 37.07 | 39.62 | b | 52.66 | a | 63.10 | 69.41 | a | 76.68 | 75.90 | 62.13 | 58.65 | 51.47 | 42.67 | a | 56.03 | |||||||||
1913 | 38.29 | c | 33.96 | b | 42.86 | c | 56.68 | b | 66.79 | c | 70.50 | 79.07 | c | 79.73 | a | 66.47 | 56.52 | 54.40 | e | 40.04 | d | 57.11 | ||||
1914 | 44.10 | a | 43.70 | a | 50.84 | 52.72 | a | 64.42 | 73.50 | 74.13 | 76.83 | a | 74.24 | a | 60.53 | a | 55.93 | 34.72 | b | 58.81 | ||||||
1915 | 39.23 | 42.32 | 40.55 | b | 55.10 | 59.17 | a | 70.00 | 73.68 | 72.58 | 69.53 | 62.52 | 50.81 | d | 44.76 | b | 56.69 | |||||||||
1916 | 36.55 | 48.76 | 54.37 | a | 55.90 | 63.57 | c | 75.00 | a | 83.26 | 76.10 | a | 73.37 | 60.71 | 49.03 | 38.58 | 59.60 | |||||||||
1917 | 40.23 | 43.40 | c | 43.26 | ----- | z | 54.19 | 73.71 | b | 81.17 | a | 76.47 | a | 74.96 | d | 64.36 | f | 55.77 | 47.77 | a | 59.09 | b | ||||
1918 | 37.93 | d | 47.75 | d | 54.19 | d | 48.31 | a | 66.20 | a | 79.90 | a | 78.80 | a | 80.23 | 65.70 | 60.29 | 46.88 | f | 38.04 | e | 59.76 | a | |||
1919 | 42.70 | a | 37.25 | 43.97 | 51.93 | a | 66.17 | a | 75.14 | b | 81.74 | 81.06 | 72.69 | a | 57.17 | a | 46.37 | 45.43 | a | 58.47 | ||||||
1920 | 46.34 | b | ----- | z | 46.33 | d | 45.70 | 62.50 | c | 76.45 | a | 86.29 | 74.50 | a | 69.90 | 59.60 | a | 45.56 | c | 41.52 | f | 61.32 | b | |||
1921 | 42.46 | c | 42.42 | b | 51.45 | 49.04 | b | 64.52 | 71.07 | b | 78.48 | 76.68 | 75.39 | b | 68.93 | b | 55.60 | 50.29 | 60.53 | |||||||
1922 | 39.26 | 43.43 | 48.55 | 52.07 | 64.65 | 78.30 | 81.48 | 82.00 | 77.53 | 64.45 | 47.47 | 45.58 | 60.40 | |||||||||||||
1923 | 46.04 | d | 40.86 | 44.48 | 56.13 | 63.19 | 74.47 | 80.58 | 74.67 | a | 69.87 | 49.84 | 50.70 | 44.31 | b | 57.93 | ||||||||||
1924 | 40.07 | a | 45.48 | b | 36.97 | a | 55.60 | 60.03 | 78.66 | a | 81.00 | 83.87 | 73.97 | 64.37 | a | 55.07 | 40.48 | 59.63 | ||||||||
1925 | 40.83 | b | 50.07 | a | 54.30 | a | 60.79 | a | 68.23 | 77.40 | 81.43 | a | 75.52 | 71.52 | a | 53.27 | a | 49.86 | a | 42.63 | a | 60.49 | ||||
1926 | 38.64 | c | 47.96 | b | 42.61 | 56.04 | d | 64.48 | 75.60 | 79.35 | 83.16 | 73.59 | a | 67.19 | d | 51.81 | c | 44.00 | d | 60.37 | ||||||
1927 | 48.96 | e | 46.32 | c | 48.74 | d | 57.29 | b | 69.93 | b | 71.76 | a | 79.68 | 73.71 | 71.70 | 66.33 | a | 55.83 | a | 41.65 | e | 60.99 | ||||
1928 | 46.83 | b | 38.44 | d | 47.00 | h | 53.00 | 65.85 | d | 68.67 | c | 83.03 | 80.27 | a | 75.75 | b | 60.39 | 48.36 | b | 43.76 | b | 60.39 | a | |||
1929 | 41.30 | d | 36.20 | c | 46.80 | a | 55.93 | a | 64.43 | c | 77.21 | k | 82.82 | c | 78.74 | 68.30 | 61.00 | 44.14 | a | 46.67 | a | 56.94 | a | |||
1930 | 33.67 | a | 50.14 | 44.45 | 63.90 | 61.39 | 79.30 | 81.10 | 77.65 | 71.83 | 60.40 | a | 49.77 | 41.37 | a | 59.58 | ||||||||||
1931 | 42.81 | 43.54 | 43.65 | 54.83 | 62.74 | 79.83 | 85.29 | 81.13 | 78.73 | 65.00 | 47.86 | a | 44.45 | 60.82 | ||||||||||||
1932 | 36.65 | 47.62 | 42.86 | c | 55.12 | f | 68.00 | a | 74.10 | 85.03 | 79.94 | 74.33 | 63.67 | d | 57.07 | a | 35.90 | a | 60.47 | a | ||||||
1933 | 43.87 | a | 41.04 | a | 53.50 | e | 53.96 | d | 63.37 | a | 81.07 | 84.97 | 78.50 | a | 78.50 | 68.35 | 55.55 | a | 52.64 | c | 62.94 | |||||
1934 | 46.53 | a | 45.50 | 56.00 | d | 62.85 | c | 76.48 | b | 81.63 | 89.77 | 85.29 | 76.48 | c | 70.10 | b | 52.55 | a | 45.75 | c | 65.75 | |||||
1935 | 43.16 | f | 44.39 | e | 54.20 | a | 57.12 | f | 56.86 | c | 76.59 | a | 85.39 | 81.58 | 75.89 | c | 63.87 | a | 50.69 | a | 45.11 | d | 63.46 | b | ||
1936 | 40.48 | d | 41.04 | c | 52.29 | c | 62.07 | c | 68.67 | a | 80.67 | 87.40 | a | 80.90 | 75.46 | b | 61.48 | d | 53.82 | b | 47.07 | b | 62.61 | |||
1937 | 34.40 | a | 45.04 | b | 46.48 | b | 57.39 | b | 69.23 | a | 76.17 | a | 85.68 | 88.45 | 76.59 | a | 68.39 | 52.79 | b | 46.73 | e | 62.28 | ||||
1938 | 44.00 | b | 46.46 | b | 53.30 | d | 59.14 | a | 63.50 | a | 76.10 | a | 84.00 | 85.13 | 73.80 | 65.65 | 47.43 | 45.19 | 61.98 | |||||||
1939 | 41.43 | a | 35.46 | 52.19 | 58.23 | 70.77 | 81.00 | 88.13 | 83.58 | 79.87 | 66.48 | 53.77 | 50.13 | 63.42 | ||||||||||||
1940 | 35.26 | 42.97 | 52.00 | 55.80 | 68.10 | 79.57 | 83.68 | 83.23 | 74.83 | 68.58 | 52.50 | 48.39 | 62.07 | |||||||||||||
1941 | 46.77 | 48.96 | 48.42 | 52.00 | 68.07 | a | 73.23 | 80.48 | 78.74 | 70.30 | 57.81 | 52.77 | 45.13 | 60.22 | ||||||||||||
1942 | 42.68 | 31.11 | 44.00 | ----- | z | 66.90 | 72.90 | 78.94 | 78.84 | 73.57 | ----- | z | 57.73 | 47.48 | 59.41 | b | ||||||||||
1943 | 45.13 | 52.85 | b | 46.74 | 64.52 | a | 60.68 | 75.87 | 84.13 | 82.19 | 76.17 | 65.68 | 51.87 | 46.16 | 62.66 | |||||||||||
1944 | 44.03 | 41.55 | 45.68 | 50.97 | 66.35 | 75.63 | 80.84 | 83.19 | 76.63 | 66.61 | 52.28 | a | 46.39 | 60.85 | ||||||||||||
1945 | 43.39 | 44.11 | 51.48 | 50.57 | 66.10 | 70.13 | 79.68 | 78.16 | 69.37 | 66.81 | 53.03 | 40.61 | 59.45 | |||||||||||||
1946 | 42.32 | 46.68 | 54.39 | 64.10 | 59.48 | 77.87 | 83.13 | 79.42 | 73.73 | 59.52 | 49.03 | 48.52 | 61.52 | |||||||||||||
1947 | 40.90 | 41.82 | 46.48 | 53.93 | 64.97 | 70.60 | 80.71 | 80.55 | 77.10 | 66.74 | 45.15 | q | ----- | z | 62.38 | b | ||||||||||
1948 | 39.77 | 39.34 | 42.23 | 60.27 | 66.26 | 74.03 | 82.81 | 81.84 | 79.20 | 66.00 | 47.13 | 42.10 | 60.08 | |||||||||||||
1949 | 32.65 | 42.29 | 48.61 | 56.63 | 65.61 | 71.90 | 80.65 | 82.06 | ----- | z | ----- | z | ----- | z | ----- | z | 60.05 | d | ||||||||
1950 | ----- | z | ----- | z | 55.50 | u | 59.57 | 66.13 | 78.87 | 79.52 | 82.90 | 71.27 | 74.84 | 52.83 | 52.48 | 68.71 | c | |||||||||
1951 | 41.13 | 48.61 | 48.29 | 54.10 | a | 67.71 | 70.97 | a | 85.84 | 81.45 | 76.46 | b | 62.39 | 51.33 | 43.59 | d | 60.99 | |||||||||
1952 | 46.03 | 45.90 | 45.86 | c | 59.37 | 67.62 | b | 84.93 | a | 86.10 | b | 85.57 | a | 79.27 | d | 70.03 | a | 43.68 | b | 45.77 | 63.34 | |||||
1953 | 51.00 | 46.80 | c | 54.87 | a | 55.55 | a | 63.06 | 80.55 | a | 83.83 | b | 78.87 | 79.34 | a | 66.32 | 54.17 | 44.00 | w | 64.94 | a | |||||
1954 | ----- | z | 57.04 | 46.13 | 65.14 | a | 66.97 | 81.74 | c | 88.24 | b | 82.77 | a | 78.43 | 65.64 | f | 57.50 | 50.03 | a | 67.40 | b | |||||
1955 | 42.03 | a | 41.44 | a | 49.59 | b | 59.38 | f | 66.71 | j | 73.04 | c | 85.79 | b | 83.38 | e | 76.17 | f | 68.62 | b | 48.22 | l | 48.08 | r | 63.41 | e |
1956 | 46.03 | 40.28 | 51.17 | a | 55.48 | e | 69.89 | d | 83.92 | d | 84.36 | c | 78.44 | f | 78.88 | e | 67.24 | f | 50.72 | e | 46.97 | 60.77 | b | |||
1957 | 39.94 | 51.82 | 47.23 | 49.33 | 59.74 | 74.57 | 80.53 | a | 79.03 | 72.66 | a | 60.84 | 42.40 | 50.10 | 59.02 | |||||||||||
1958 | 44.00 | 47.93 | 37.94 | 53.40 | 71.29 | 75.93 | 78.61 | 84.35 | 76.72 | a | 67.14 | b | 54.53 | 47.23 | 61.59 | |||||||||||
1959 | 42.00 | 40.37 | a | 47.07 | b | 56.60 | 65.26 | 79.10 | 84.94 | 84.03 | b | 72.67 | 58.06 | 52.87 | 48.71 | c | 60.97 | |||||||||
1960 | 41.96 | c | 35.00 | 49.84 | 60.63 | 67.87 | 78.43 | 83.48 | b | 85.41 | b | 74.96 | g | 62.00 | 52.64 | b | 41.90 | 59.93 | a | |||||||
1961 | 46.77 | 46.32 | 45.55 | 54.00 | c | 64.94 | 76.17 | 79.07 | a | 79.00 | a | 66.37 | 62.35 | 46.33 | 38.31 | b | 58.76 | |||||||||
1962 | 37.77 | 45.75 | 46.03 | 58.65 | d | 70.42 | 73.43 | 80.97 | a | 84.10 | 75.77 | 69.61 | 56.78 | c | 51.71 | c | 62.58 | |||||||||
1963 | 36.21 | b | 50.62 | b | 51.03 | a | 63.21 | b | 73.55 | 80.70 | 87.31 | b | 79.97 | a | 77.21 | a | 70.71 | g | 55.80 | 43.77 | 63.58 | a | ||||
1964 | 41.74 | 38.97 | 43.06 | ----- | z | 68.97 | ----- | z | 88.48 | ----- | z | 75.71 | b | ----- | z | ----- | z | ----- | z | 59.49 | f | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.83 | 43.70 | 47.80 | 56.21 | 65.55 | 76.16 | 82.34 | 80.39 | 74.01 | 63.45 | 51.44 | 44.75 | 60.54 | |||||||||||||
S.D. | 3.99 | 5.16 | 4.70 | 4.50 | 4.00 | 3.97 | 3.63 | 3.45 | 3.92 | 4.88 | 3.97 | 4.25 | 2.04 | |||||||||||||
SKEW | -0.19 | -0.06 | -0.19 | 0.08 | -0.19 | 0.05 | -0.22 | -0.15 | -0.83 | -0.36 | -0.51 | -0.33 | 0.01 | |||||||||||||
MAX | 51.00 | 57.04 | 56.00 | 65.14 | 76.48 | 84.93 | 89.77 | 88.45 | 79.87 | 74.84 | 57.73 | 52.64 | 65.75 | |||||||||||||
MIN | 32.65 | 31.11 | 36.97 | 45.70 | 54.19 | 68.67 | 73.68 | 72.58 | 62.13 | 49.84 | 42.40 | 34.72 | 56.03 | |||||||||||||
YRS | 51 | 52 | 52 | 48 | 53 | 52 | 54 | 52 | 51 | 47 | 49 | 48 | 36 |