YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.15 | n | 63.28 | 52.44 | 36.07 | b | 26.76 | 44.64 | h | |||
1919 | 19.71 | 29.21 | 38.39 | 49.07 | 58.15 | a | 63.14 | s | 69.61 | 69.98 | a | 61.93 | 45.13 | ----- | z | 29.31 | 47.05 | b | ||||||||
1920 | 31.63 | 38.70 | b | 41.24 | h | 43.56 | m | 57.12 | b | 64.71 | k | 70.76 | 67.03 | 61.67 | d | 41.76 | l | 38.93 | 28.39 | 49.28 | d | |||||
1921 | 31.83 | s | 32.96 | 42.84 | 45.56 | e | 55.08 | a | 65.34 | b | 70.73 | a | 68.19 | 63.90 | d | ----- | z | ----- | z | ----- | z | 55.58 | d | |||
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.70 | b | 51.31 | 35.77 | 34.69 | 46.37 | h | |||
1923 | 33.35 | 33.45 | 36.87 | 46.75 | 56.58 | 63.20 | 70.73 | 66.31 | 57.88 | 46.35 | 36.36 | a | 28.40 | b | 48.02 | |||||||||||
1924 | 22.80 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | 50.07 | w | 57.82 | n | 62.53 | 69.32 | 67.33 | a | 61.52 | a | 49.73 | 32.20 | 30.12 | a | 53.25 | e | ||||
1949 | 23.92 | a | 27.16 | 37.85 | 45.92 | 54.57 | b | 59.47 | l | 67.95 | 65.48 | 63.40 | 46.81 | 39.79 | a | 24.79 | 45.24 | a | ||||||||
1950 | 27.87 | 35.41 | 38.82 | 48.80 | 52.27 | 62.69 | a | 69.44 | 66.81 | 58.43 | a | 55.42 | e | 38.20 | 31.67 | b | 48.82 | |||||||||
1951 | 26.31 | 32.10 | h | 34.22 | m | 45.50 | y | 54.82 | a | 59.12 | a | 70.85 | 67.28 | a | ----- | z | 51.04 | g | 36.57 | 27.68 | a | 48.95 | e | |||
1952 | 31.69 | 30.82 | a | 32.68 | a | 46.67 | 54.15 | a | 62.20 | 65.34 | 67.00 | w | 62.72 | 52.69 | 31.55 | 25.19 | 45.06 | a | ||||||||
1953 | 34.34 | 31.27 | 39.92 | a | 44.73 | 49.55 | a | 65.13 | 70.92 | 67.52 | 62.19 | c | 50.02 | a | 38.75 | 23.30 | a | 48.14 | ||||||||
1954 | 31.00 | c | 37.48 | a | 34.58 | 50.92 | 57.95 | 64.40 | a | 71.55 | 68.13 | 63.52 | c | 52.97 | a | 41.00 | b | 28.56 | 50.17 | |||||||
1955 | 24.27 | 25.57 | 38.34 | c | 46.20 | 53.46 | e | 63.67 | a | 69.37 | 70.42 | 63.83 | 53.53 | 39.10 | e | 35.29 | b | 48.59 | ||||||||
1956 | 36.53 | 28.69 | ----- | z | ----- | z | 59.02 | a | 68.72 | 69.31 | d | 67.66 | b | 65.37 | 52.45 | a | 33.70 | 29.84 | 51.13 | b | ||||||
1957 | 33.90 | a | 41.09 | a | 41.42 | a | 45.62 | e | 53.73 | 66.47 | 70.02 | c | 69.16 | b | 62.65 | 52.28 | d | 34.48 | d | 35.02 | 50.48 | |||||
1958 | ----- | z | ----- | z | ----- | z | 46.17 | 60.16 | 66.83 | a | 70.47 | 73.25 | y | 62.14 | b | 51.71 | 38.17 | a | 33.65 | 53.66 | d | |||||
1959 | 30.29 | 31.95 | f | ----- | z | ----- | z | ----- | z | ----- | z | 71.63 | 67.87 | 61.33 | c | 49.71 | 36.83 | 31.70 | a | 49.91 | e | |||||
1960 | 22.88 | a | 30.05 | 42.79 | 47.85 | 53.74 | 66.53 | 72.13 | 70.84 | 64.15 | 48.48 | 39.55 | a | 27.76 | 48.90 | |||||||||||
1961 | 27.77 | 34.09 | 37.94 | 48.42 | 57.39 | 69.97 | 72.13 | 69.27 | 59.95 | 50.08 | a | 38.16 | a | 25.60 | a | 49.23 | ||||||||||
1962 | 25.94 | 35.65 | e | 36.07 | b | 51.03 | 55.69 | 63.82 | 71.13 | 70.58 | 64.86 | e | 51.42 | a | 42.84 | a | 33.62 | a | 50.22 | |||||||
1963 | 23.30 | a | 36.37 | a | 39.72 | a | 47.92 | 59.21 | 65.10 | a | 75.11 | c | 68.15 | a | 65.22 | c | 55.18 | 41.35 | 30.11 | 50.56 | ||||||
1964 | 27.52 | a | 27.66 | 35.43 | b | 44.80 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.66 | 30.57 | h | ||
1965 | 33.92 | 32.13 | b | 37.31 | g | 48.03 | a | 53.41 | c | 62.73 | b | 70.00 | a | 67.85 | a | 58.82 | b | 52.48 | c | 41.52 | c | 32.53 | a | 50.31 | a | |
1966 | 27.09 | d | 29.96 | d | 39.24 | b | 48.75 | 60.08 | a | 65.87 | 71.93 | b | 70.03 | a | 62.10 | 51.94 | 43.12 | a | 27.95 | c | 49.84 | |||||
1967 | 25.63 | 37.71 | 44.52 | 49.52 | 56.45 | c | 66.09 | c | 73.29 | b | 67.93 | c | 62.05 | b | 48.20 | u | 41.91 | a | 24.79 | b | 49.99 | a | ||||
1968 | 26.42 | a | 38.26 | h | 40.90 | f | 45.33 | d | 56.10 | f | ----- | z | 69.93 | j | ----- | z | 59.85 | ----- | z | 38.46 | b | 25.65 | a | 39.14 | g | |
1969 | 34.71 | 33.62 | 36.55 | 50.25 | 58.74 | 65.43 | 73.29 | 72.60 | 64.38 | 42.44 | v | 35.80 | 33.84 | 50.84 | a | |||||||||||
1970 | 30.00 | a | 36.21 | 37.18 | 41.63 | 54.61 | 63.60 | 71.11 | 70.92 | 60.58 | 46.34 | 40.20 | 31.11 | 48.63 | ||||||||||||
1971 | 28.98 | 32.86 | 40.73 | 45.93 | 52.84 | 64.88 | 68.28 | v | 68.83 | e | 60.00 | 48.40 | a | 37.79 | a | 26.60 | 46.17 | a | ||||||||
1972 | 31.69 | 35.91 | 45.50 | 48.23 | 55.02 | 63.65 | 72.40 | 68.98 | 61.40 | 52.83 | a | 36.81 | a | 27.48 | a | 49.99 | ||||||||||
1973 | 23.63 | e | 32.44 | a | 37.24 | 42.48 | c | 56.34 | b | 63.15 | 68.13 | a | 67.87 | 58.92 | 49.53 | 39.53 | 31.92 | a | 47.60 | |||||||
1974 | 28.68 | 31.44 | a | 43.61 | 44.40 | 58.18 | 66.72 | 69.48 | 67.61 | 59.45 | 51.97 | 38.57 | 27.73 | 48.99 | ||||||||||||
1975 | 27.32 | 28.95 | 36.27 | 42.55 | 52.44 | 63.87 | 70.85 | 67.85 | 59.70 | c | 50.85 | 37.08 | 30.02 | b | 47.31 | |||||||||||
1976 | 28.79 | 39.76 | 38.98 | a | 47.98 | a | 56.27 | 63.00 | 70.37 | 68.27 | 62.83 | 47.68 | 36.31 | a | 28.88 | a | 49.09 | |||||||||
1977 | 24.74 | 34.14 | 38.16 | 49.67 | ----- | z | 66.40 | 70.69 | 69.68 | a | 64.13 | 52.93 | a | 40.89 | c | 37.35 | 49.89 | a | ||||||||
1978 | 33.66 | c | 35.39 | 43.97 | 48.28 | 55.10 | e | 65.36 | a | 70.90 | 66.98 | 60.83 | 52.77 | 41.10 | 28.06 | 50.20 | ||||||||||
1979 | 24.74 | 32.93 | 38.11 | 45.78 | 51.98 | c | 64.55 | 71.09 | c | 66.32 | 65.75 | 53.39 | 34.83 | 34.61 | 48.67 | |||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.55 | 33.20 | 39.06 | 47.01 | 55.62 | 64.70 | 70.67 | 68.43 | 62.07 | 50.93 | 38.09 | 29.77 | 49.13 | |||||||||||||
S.D. | 4.12 | 3.80 | 3.15 | 2.41 | 2.60 | 2.11 | 1.74 | 1.58 | 2.10 | 2.60 | 2.83 | 3.46 | 0.98 | |||||||||||||
SKEW | 0.05 | 0.04 | 0.33 | -0.41 | -0.09 | 0.07 | -0.37 | 0.59 | -0.19 | -0.54 | -0.32 | 0.23 | -0.14 | |||||||||||||
MAX | 36.53 | 41.09 | 45.50 | 51.03 | 60.16 | 69.97 | 75.11 | 72.60 | 65.75 | 55.42 | 43.12 | 37.35 | 50.56 | |||||||||||||
MIN | 19.71 | 25.57 | 32.68 | 41.63 | 49.55 | 59.12 | 65.34 | 65.48 | 57.88 | 45.13 | 31.55 | 23.30 | 47.31 | |||||||||||||
YRS | 33 | 31 | 28 | 30 | 31 | 30 | 33 | 32 | 36 | 31 | 35 | 37 | 19 |