YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1911 | ----- | z | ----- | z | ----- | z | ----- | z | 68.44 | o | 76.67 | 85.00 | 81.39 | 70.07 | 61.43 | a | 40.85 | c | 32.24 | b | 63.95 | e | ||||
1912 | 31.03 | 39.00 | 46.39 | 58.70 | 68.84 | 78.37 | 78.52 | 75.68 | 66.28 | a | 54.23 | e | 43.27 | 35.57 | a | 56.32 | ||||||||||
1913 | 28.52 | b | 29.04 | 39.35 | 59.15 | d | 74.67 | p | 74.47 | 80.71 | 82.74 | 72.83 | 66.71 | 50.03 | 39.33 | a | 56.63 | a | ||||||||
1914 | 38.23 | 35.46 | 51.26 | 60.27 | 70.45 | 72.00 | 86.42 | 86.45 | 68.53 | 60.26 | 45.67 | 31.23 | 58.85 | |||||||||||||
1915 | 31.29 | 41.93 | 55.03 | 64.87 | 64.61 | 72.90 | a | 80.35 | 90.29 | 69.70 | 61.06 | 39.23 | 33.19 | 58.71 | ||||||||||||
1916 | 22.94 | 38.14 | 46.19 | 58.70 | 61.06 | 72.47 | 78.65 | 82.94 | 73.00 | b | 58.90 | 38.80 | 27.77 | a | 54.96 | |||||||||||
1917 | 30.03 | 33.93 | 38.45 | 51.31 | a | 65.48 | 72.07 | 86.87 | 85.97 | a | 75.10 | 62.06 | 48.90 | 38.90 | 57.42 | |||||||||||
1918 | 34.39 | 36.36 | 49.42 | 62.64 | b | 65.45 | 83.03 | 84.48 | d | 78.62 | b | 79.96 | b | 59.90 | 43.37 | c | 35.56 | d | 59.43 | |||||||
1919 | 37.58 | 36.54 | 47.45 | 61.77 | 68.40 | f | 76.21 | b | 89.39 | m | 85.48 | b | 73.43 | 53.40 | a | 40.48 | g | 29.55 | 55.71 | c | ||||||
1920 | 32.89 | d | 39.76 | 47.52 | 53.85 | c | 68.35 | 77.13 | 95.03 | a | 85.10 | a | 76.10 | j | 56.37 | a | 45.00 | 36.89 | c | 57.99 | a | |||||
1921 | 35.58 | 39.15 | o | 50.10 | 57.13 | 73.00 | 80.20 | 84.07 | q | 84.90 | 65.87 | 61.42 | 48.20 | o | ----- | z | 63.52 | d | ||||||||
1922 | 25.85 | r | 34.42 | p | 43.00 | 55.40 | 68.55 | 84.93 | 89.42 | 87.81 | 77.87 | 63.87 | 39.07 | 27.06 | 63.70 | b | ||||||||||
1923 | 36.00 | 32.75 | 48.43 | a | 60.87 | 68.37 | a | 73.43 | 89.27 | e | 85.07 | a | 78.73 | 61.74 | 44.97 | 36.10 | a | 59.64 | ||||||||
1924 | 28.97 | 45.76 | 49.52 | 61.82 | b | 78.71 | 80.73 | 91.25 | c | 83.71 | 78.72 | a | 59.97 | 40.59 | a | 29.74 | 60.79 | |||||||||
1925 | 36.00 | 43.89 | 51.71 | 65.97 | a | 73.84 | 80.60 | 92.32 | 86.00 | 76.10 | 58.90 | 43.73 | 39.42 | 62.37 | ||||||||||||
1926 | 33.23 | 43.86 | 58.03 | 68.60 | 69.06 | 80.43 | 89.42 | 81.97 | 66.13 | 61.80 | a | 46.93 | 33.61 | 61.09 | ||||||||||||
1927 | 32.35 | 40.11 | 49.23 | a | 58.55 | a | 63.87 | a | 76.13 | 85.19 | 84.37 | a | 68.20 | 57.61 | 43.55 | a | 29.21 | b | 57.36 | |||||||
1928 | 32.61 | 39.31 | 51.77 | 56.97 | 77.20 | a | 75.93 | 86.61 | 83.58 | 77.80 | 59.39 | 44.30 | 34.32 | 59.98 | ||||||||||||
1929 | 21.90 | a | 32.46 | 50.39 | 55.90 | 70.68 | 73.77 | 86.06 | 89.93 | b | 72.17 | 63.60 | a | 42.83 | 38.42 | 58.18 | ||||||||||
1930 | 25.42 | 42.68 | 53.42 | 66.50 | 67.23 | 74.00 | 87.13 | 88.03 | 75.10 | 56.81 | 41.23 | 32.39 | 59.16 | |||||||||||||
1931 | 36.94 | 40.79 | 49.35 | 60.87 | 74.34 | b | 75.28 | a | 87.87 | 87.65 | 72.53 | 60.74 | 40.27 | 33.10 | 59.98 | |||||||||||
1932 | 30.06 | 36.34 | 45.81 | 59.63 | 67.90 | 79.33 | 82.32 | 84.39 | 77.77 | 57.65 | 46.20 | 32.68 | 58.34 | |||||||||||||
1933 | 34.42 | 30.25 | 46.65 | 60.53 | 63.84 | 77.90 | 86.65 | 87.29 | 69.00 | 63.63 | a | 46.00 | a | 40.52 | 58.89 | |||||||||||
1934 | 40.10 | 48.82 | 58.35 | 70.83 | 74.16 | 79.40 | 87.83 | a | 88.97 | 72.66 | a | 61.07 | b | 48.41 | a | 36.35 | 63.91 | |||||||||
1935 | 35.10 | 42.57 | 46.19 | 56.80 | 71.26 | 76.33 | 85.77 | a | 84.81 | 81.50 | 59.35 | 38.20 | 34.13 | 59.33 | ||||||||||||
1936 | 36.10 | 25.59 | 47.81 | 64.97 | 76.84 | 77.70 | 88.45 | 86.57 | a | 73.10 | 66.55 | 43.17 | a | 36.32 | 60.26 | |||||||||||
1937 | 15.90 | a | 35.86 | 48.55 | 54.20 | 70.61 | 75.90 | 86.77 | 80.00 | 76.83 | 61.77 | 42.87 | 34.61 | 56.99 | ||||||||||||
1938 | 33.16 | 38.14 | 44.97 | a | 58.33 | 66.13 | 77.23 | 88.33 | a | 84.29 | 84.60 | 61.48 | 40.10 | a | 36.10 | 59.41 | ||||||||||
1939 | 35.77 | 34.25 | 48.45 | 64.03 | 72.19 | 71.63 | 86.61 | 88.35 | 76.41 | a | 59.29 | 48.97 | 41.06 | 60.59 | ||||||||||||
1940 | 34.23 | 38.83 | 52.63 | a | 60.14 | a | 72.63 | a | 82.10 | a | 85.52 | 86.37 | a | 75.31 | a | 59.77 | 37.03 | 36.26 | 60.07 | |||||||
1941 | 36.48 | b | 44.00 | 57.61 | 64.83 | a | 66.20 | a | 73.17 | 87.55 | 80.70 | a | 64.03 | 56.31 | b | 47.23 | 36.97 | 59.59 | ||||||||
1942 | 29.97 | 37.31 | b | 49.58 | 62.00 | a | 63.45 | 70.20 | 84.52 | 86.66 | b | 78.03 | 62.42 | 38.33 | 33.45 | 57.99 | ||||||||||
1943 | 27.62 | b | 41.50 | 42.87 | 62.17 | 63.42 | 74.05 | h | 85.90 | a | 82.68 | 79.17 | 61.13 | 44.34 | a | 34.45 | b | 56.84 | a | |||||||
1944 | 35.94 | o | 39.34 | 47.88 | e | 61.46 | b | 69.71 | c | 75.73 | 89.17 | b | 84.27 | a | 72.20 | y | 68.75 | k | 41.46 | b | 33.38 | g | 63.63 | d | ||
1945 | 35.04 | c | 41.25 | d | 45.63 | a | 55.00 | c | 68.04 | d | 73.69 | a | 88.20 | a | 87.42 | e | 67.67 | c | 63.00 | d | 40.55 | a | 33.80 | a | 58.27 | |
1946 | 34.11 | d | 39.85 | a | 48.43 | c | 60.38 | i | 71.84 | 73.81 | d | 85.41 | b | 84.65 | h | 71.70 | c | 56.41 | i | 40.39 | g | 36.33 | j | 60.74 | e | |
1947 | 31.03 | a | 44.00 | b | 52.35 | e | 60.27 | h | 74.26 | d | 71.22 | c | 85.78 | d | 81.04 | c | 70.56 | c | 56.48 | b | 39.41 | a | 35.00 | d | 58.28 | a |
1948 | 34.03 | b | 36.30 | f | ----- | z | ----- | z | ----- | z | ----- | z | 77.48 | j | 79.52 | h | 73.31 | a | 60.46 | e | 41.44 | c | 29.31 | b | 47.71 | g |
1949 | 19.47 | a | 34.23 | b | 46.62 | b | 65.11 | b | 74.21 | b | 76.88 | d | 87.55 | i | 85.83 | m | 76.14 | b | 54.83 | a | 48.11 | b | 35.17 | a | 53.08 | b |
1950 | 18.68 | 36.23 | b | 42.21 | c | 55.52 | c | 67.16 | f | 71.96 | f | 83.41 | b | 84.13 | h | 78.00 | e | 55.12 | g | 43.60 | j | 37.27 | i | 52.34 | f | |
1951 | 31.96 | f | 37.32 | i | 41.69 | e | 62.83 | f | 69.35 | h | 73.05 | j | 86.09 | i | 83.39 | m | 71.05 | i | 53.68 | i | 42.37 | k | 26.74 | h | 41.69 | k |
1952 | 29.82 | c | 38.08 | c | 44.83 | b | 64.76 | e | 68.96 | g | 71.86 | b | 85.59 | i | 81.50 | i | 77.04 | d | 68.00 | b | 42.00 | c | 34.22 | d | 52.29 | c |
1953 | 42.31 | b | 43.08 | c | 50.10 | 57.25 | f | 66.68 | c | 67.62 | f | 83.50 | g | 80.73 | e | 75.61 | b | 63.39 | c | 47.38 | f | 38.48 | f | 60.27 | e | |
1954 | 31.45 | i | 40.76 | g | 46.26 | d | 55.65 | d | 68.57 | c | 68.48 | c | 80.32 | c | 76.36 | f | 69.38 | i | 56.42 | e | 47.96 | f | 34.93 | a | 58.66 | e |
1955 | 32.00 | a | 34.64 | 39.03 | a | 50.69 | d | 62.54 | c | 73.93 | c | 78.96 | f | 83.37 | d | 71.37 | c | 55.79 | b | 34.32 | b | 31.61 | c | 51.75 | a | |
1956 | 34.41 | b | 30.70 | b | 43.60 | a | 61.93 | 69.83 | b | 72.31 | d | 82.04 | e | ----- | z | ----- | z | 48.59 | n | 38.50 | d | 35.61 | c | 52.10 | c | |
1957 | 21.77 | a | 35.59 | a | 45.60 | a | 59.41 | a | 70.48 | d | 73.00 | d | 79.45 | b | 76.43 | c | 76.20 | e | 52.92 | s | 41.86 | i | 39.21 | g | 59.77 | c |
1958 | 35.69 | b | 46.55 | f | 48.63 | d | 55.46 | f | 76.32 | c | 78.14 | b | 84.90 | b | 86.48 | f | 70.04 | c | 61.71 | c | 40.31 | d | 35.04 | e | 58.98 | c |
1959 | 34.03 | 36.54 | b | 47.03 | b | 59.28 | a | 62.30 | d | 73.75 | j | 84.35 | e | 76.68 | f | 64.73 | d | 55.19 | d | 39.10 | a | 34.86 | c | 51.74 | b | |
1960 | 29.73 | a | 38.31 | 46.83 | a | 57.07 | 62.58 | 75.91 | h | 90.42 | 76.61 | c | 75.44 | c | 60.55 | b | 43.11 | b | 34.25 | g | 58.07 | b | ||||
1961 | 36.65 | 42.26 | a | 49.47 | a | 56.57 | 66.74 | d | 83.35 | j | 86.96 | c | 90.68 | c | 69.39 | b | 56.93 | b | 39.93 | 32.81 | 57.13 | a | ||||
1962 | 30.71 | 38.37 | a | 44.31 | b | 62.44 | c | 61.89 | d | 75.21 | a | 83.45 | b | 80.09 | h | 75.04 | e | 59.19 | j | 45.32 | e | 38.56 | d | 55.53 | b | |
1963 | 27.00 | 44.26 | a | 51.13 | a | 56.12 | e | 67.31 | b | 74.24 | e | 80.52 | j | 84.00 | h | 81.71 | i | 61.00 | g | 44.96 | d | 33.46 | e | 49.81 | d | |
1964 | 35.96 | d | 39.96 | b | 41.90 | 55.96 | d | 65.20 | f | 71.67 | i | 86.79 | l | 78.00 | k | 68.36 | e | 62.34 | b | 39.68 | b | 31.03 | 46.90 | d | ||
1965 | 34.37 | a | 39.96 | e | 45.79 | b | 58.57 | g | 65.56 | f | 74.88 | e | 85.15 | e | 81.74 | h | 68.14 | h | 63.88 | f | 44.50 | d | 35.50 | c | 51.45 | e |
1966 | 33.72 | b | 39.88 | c | 49.15 | k | 58.12 | e | 72.19 | e | 71.21 | a | 83.00 | i | 84.43 | h | 79.39 | g | 60.72 | f | 44.15 | c | 37.88 | f | 53.21 | f |
1967 | 39.03 | b | 44.91 | f | 46.56 | f | 53.83 | f | 66.09 | i | 82.00 | r | 87.19 | e | 91.23 | 82.90 | 58.48 | 42.66 | a | 32.55 | 62.01 | e | ||||
1968 | 33.94 | 47.07 | 53.73 | a | 57.38 | a | 68.61 | 75.28 | a | 87.42 | 78.32 | 73.03 | 55.25 | c | 41.17 | 31.84 | 58.59 | |||||||||
1969 | 24.73 | a | 36.89 | a | 48.03 | a | 60.07 | 73.38 | b | 80.07 | 84.55 | 85.43 | a | 74.23 | 55.42 | 43.80 | 33.47 | a | 58.34 | |||||||
1970 | 32.87 | a | 43.52 | a | 48.74 | 53.38 | a | 71.00 | 81.34 | a | 86.52 | 88.14 | b | 68.57 | 59.00 | f | 42.97 | a | 32.97 | a | 59.09 | a | ||||
1971 | 35.32 | 39.96 | a | 42.48 | f | 58.03 | 71.48 | 71.93 | 85.16 | 90.65 | 68.20 | 56.00 | a | 41.57 | 31.74 | 59.10 | a | |||||||||
1972 | 30.48 | 38.97 | 51.07 | a | 54.04 | b | 68.97 | a | 72.87 | g | 80.12 | g | 89.05 | l | 64.43 | g | 59.84 | 43.43 | 31.65 | 47.30 | d | |||||
1973 | 32.94 | 41.39 | 51.00 | 59.73 | 71.16 | 76.83 | 88.00 | 85.00 | 75.23 | 57.03 | 38.00 | 36.52 | 59.40 | |||||||||||||
1974 | 31.16 | 41.39 | 48.20 | a | 58.20 | 63.55 | 81.60 | 79.64 | i | 83.44 | d | 77.04 | b | 65.29 | 43.47 | 36.85 | e | 57.29 | a | |||||||
1975 | 29.87 | 33.18 | 40.64 | i | 50.81 | c | 64.35 | 72.24 | e | 85.55 | 78.15 | e | 75.07 | o | 54.97 | b | 39.18 | h | 35.90 | 56.11 | c | |||||
1976 | 35.13 | a | 36.71 | a | 42.80 | a | 57.92 | e | 69.32 | 68.72 | l | 82.00 | p | 78.27 | e | 81.00 | l | 58.41 | i | 52.15 | q | 37.04 | h | 53.36 | f | |
1977 | 33.93 | p | 41.05 | f | 43.45 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.98 | 38.64 | 47.97 | 59.35 | 69.02 | 75.84 | 85.97 | 84.36 | 73.57 | 59.78 | 42.63 | 34.30 | 59.14 | |||||||||||||
S.D. | 5.22 | 4.50 | 4.27 | 4.28 | 4.28 | 3.61 | 3.29 | 3.92 | 4.68 | 3.38 | 3.32 | 3.04 | 1.73 | |||||||||||||
SKEW | -1.06 | -0.38 | 0.15 | 0.27 | 0.11 | 0.40 | -0.15 | -0.38 | -0.02 | 0.21 | 0.11 | -0.08 | 0.27 | |||||||||||||
MAX | 42.31 | 48.82 | 58.35 | 70.83 | 78.71 | 84.93 | 95.03 | 91.23 | 84.60 | 68.00 | 50.03 | 41.06 | 63.91 | |||||||||||||
MIN | 15.90 | 25.59 | 38.45 | 50.69 | 61.06 | 68.48 | 78.52 | 75.68 | 64.03 | 53.40 | 34.32 | 27.06 | 54.96 | |||||||||||||
YRS | 61 | 58 | 60 | 57 | 56 | 54 | 52 | 50 | 55 | 54 | 56 | 56 | 30 |