YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | 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 | 60.45 | i | 70.29 | b | 67.29 | 64.65 | h | ----- | z | ----- | z | ----- | z | ----- | z | 68.79 | j | |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | 58.72 | a | 64.20 | 68.28 | a | 65.05 | 62.65 | 53.73 | a | 42.70 | 43.66 | 57.37 | d | |||||
1941 | 37.61 | 41.81 | a | 41.79 | 46.68 | 57.98 | 61.95 | 65.79 | 65.27 | 60.72 | 52.85 | 44.68 | 39.97 | 51.43 | ||||||||||||
1942 | 38.53 | 36.04 | 41.32 | 48.73 | 57.45 | b | 65.70 | 66.85 | 65.03 | 59.47 | 51.47 | 47.18 | 41.11 | 51.57 | ||||||||||||
1943 | 38.63 | 40.25 | l | 43.82 | 53.27 | 58.73 | 65.42 | 67.10 | 68.98 | 60.88 | 51.23 | 43.02 | 36.18 | 53.39 | a | |||||||||||
1944 | 36.23 | 39.10 | 40.85 | 48.22 | 56.77 | 66.13 | 67.93 | a | 66.92 | 60.17 | 52.47 | 41.70 | 37.16 | 51.14 | ||||||||||||
1945 | 37.32 | 41.45 | 44.06 | 49.23 | 60.16 | 63.80 | 67.19 | 67.24 | 62.31 | a | 52.98 | 46.20 | 36.97 | 52.41 | ||||||||||||
1946 | 33.24 | 39.25 | 44.71 | 53.88 | 55.82 | 66.62 | 67.16 | 67.13 | 62.93 | 53.03 | 40.78 | 40.76 | 52.11 | |||||||||||||
1947 | 32.82 | 38.25 | 42.07 | c | 47.73 | 58.08 | 65.28 | 69.06 | 66.81 | 63.85 | 55.07 | d | 39.25 | 34.42 | 51.06 | |||||||||||
1948 | 35.82 | a | 39.69 | b | 39.79 | 54.64 | a | 59.32 | a | 66.52 | 68.29 | 68.19 | 61.67 | 51.42 | a | 39.77 | 41.55 | 52.22 | ||||||||
1949 | 29.38 | a | 38.76 | c | 44.70 | i | 48.75 | 57.98 | 65.98 | 66.74 | 64.89 | 61.23 | 49.76 | 47.88 | 36.39 | 51.61 | a | |||||||||
1950 | 41.97 | 42.71 | 46.21 | 52.58 | 58.16 | 66.88 | 66.20 | a | 65.17 | e | 59.97 | 58.31 | 46.52 | 42.00 | 53.89 | |||||||||||
1951 | 36.98 | 39.82 | 41.56 | 47.58 | 58.31 | 66.87 | 72.48 | 69.92 | 65.75 | 56.03 | 44.13 | 39.63 | 53.26 | |||||||||||||
1952 | 43.18 | 39.10 | 40.47 | 49.15 | 58.74 | 68.68 | 67.24 | 70.66 | 62.68 | 56.10 | 40.47 | 38.47 | a | 52.91 | ||||||||||||
1953 | 43.76 | 37.39 | 47.19 | 51.22 | 56.35 | 69.88 | 70.92 | 68.45 | 64.77 | 53.65 | 46.95 | 35.29 | 53.82 | |||||||||||||
1954 | 42.03 | 44.57 | 44.19 | 55.72 | 59.39 | 67.12 | 70.50 | 67.11 | 65.13 | 59.09 | h | 46.43 | b | 40.45 | 54.79 | a | ||||||||||
1955 | 35.40 | 36.98 | a | 45.87 | e | 50.90 | 58.02 | 65.78 | 66.21 | 66.32 | 64.82 | 55.11 | 45.17 | 42.03 | a | 52.72 | ||||||||||
1956 | 42.16 | 35.53 | 47.11 | d | 47.68 | e | 62.54 | g | 69.35 | c | 69.42 | a | 66.76 | d | 66.42 | f | 57.73 | g | 43.62 | e | 39.54 | h | 52.70 | d | ||
1957 | 40.39 | c | 47.06 | a | 43.77 | 49.25 | 54.65 | a | 67.34 | a | 70.16 | c | 66.42 | e | 61.70 | b | 52.53 | p | 37.44 | e | 41.89 | h | 53.82 | b | ||
1958 | 34.02 | 40.33 | a | 37.55 | a | 48.78 | a | 59.39 | 69.69 | a | 71.61 | 69.60 | 60.98 | c | 52.23 | 43.31 | n | 40.12 | a | 53.12 | a | |||||
1959 | 39.29 | 39.48 | 41.60 | 52.26 | a | 59.64 | b | 67.87 | 67.32 | 67.55 | 63.57 | a | 54.37 | 43.44 | c | 40.32 | a | 53.06 | ||||||||
1960 | 35.31 | 34.36 | a | 46.18 | 52.58 | 59.16 | 68.93 | 67.89 | 68.29 | 62.28 | 53.66 | 45.65 | 33.84 | 52.34 | ||||||||||||
1961 | 35.79 | 38.66 | 44.65 | 52.33 | a | 60.92 | 67.05 | a | 67.71 | 65.90 | a | 61.70 | b | 53.19 | 40.80 | c | 39.24 | 52.33 | ||||||||
1962 | 36.60 | a | 43.59 | 40.65 | a | 52.95 | 59.44 | 62.97 | 67.89 | 68.48 | 62.45 | 54.81 | 48.07 | 42.42 | 53.36 | |||||||||||
1963 | 33.03 | a | 40.39 | 42.67 | a | 54.84 | a | 61.00 | 66.03 | 68.63 | a | 66.26 | 62.83 | 55.92 | 47.05 | 37.05 | 52.98 | |||||||||
1964 | 33.90 | 34.21 | a | 42.08 | 50.23 | 60.24 | 66.98 | 69.85 | 69.21 | 62.60 | 55.45 | 45.28 | 38.89 | 52.41 | ||||||||||||
1965 | 41.00 | 36.46 | 39.35 | a | 51.85 | 58.85 | a | 64.08 | 68.77 | 64.76 | 60.75 | 54.03 | 47.82 | 40.19 | d | 52.33 | ||||||||||
1966 | 31.98 | 32.68 | 45.66 | 51.48 | a | 59.26 | 64.72 | 68.20 | a | 64.71 | 59.88 | 51.69 | 48.38 | 37.61 | 51.36 | |||||||||||
1967 | 37.71 | 41.43 | 48.55 | 53.37 | 58.23 | 64.90 | 68.18 | 65.03 | a | 58.79 | a | 52.69 | 46.45 | 34.42 | 52.48 | |||||||||||
1968 | 37.95 | 40.40 | 42.15 | 46.43 | 57.21 | 64.00 | 63.17 | a | 63.44 | 57.53 | 54.42 | a | 41.90 | 36.32 | 50.41 | |||||||||||
1969 | 43.39 | 38.79 | 38.28 | a | 52.62 | a | 58.42 | 64.58 | 69.42 | 66.47 | 60.28 | 52.87 | 41.19 | a | 38.40 | b | 52.06 | |||||||||
1970 | 32.23 | 40.44 | a | 39.65 | 48.70 | 57.71 | 61.93 | 66.15 | a | 65.42 | 60.33 | 47.89 | 43.42 | 39.53 | 50.28 | |||||||||||
1971 | 36.00 | 38.46 | 45.56 | 49.58 | 57.76 | 66.45 | 68.26 | 63.27 | 60.55 | 51.44 | 43.58 | 37.97 | 51.57 | |||||||||||||
1972 | 40.30 | a | 40.88 | 49.52 | 52.68 | 57.81 | b | 65.68 | 68.34 | 64.52 | 61.95 | 55.05 | 37.95 | 37.19 | 52.66 | |||||||||||
1973 | 34.76 | 36.25 | 41.82 | 46.22 | 57.16 | 64.35 | ----- | z | 65.44 | 63.47 | 54.97 | 48.93 | 39.15 | 50.23 | a | |||||||||||
1974 | 38.85 | a | 38.14 | 48.50 | 51.08 | 63.42 | 68.17 | 67.42 | 65.20 | a | 59.03 | 52.85 | a | 43.31 | a | 33.00 | 52.41 | |||||||||
1975 | 35.45 | 37.64 | 44.16 | 48.12 | 55.06 | 66.13 | d | 65.40 | 65.58 | 59.82 | 54.84 | 44.50 | 39.55 | 51.35 | ||||||||||||
1976 | 38.40 | a | 44.81 | 44.71 | 50.77 | 56.40 | 64.80 | 65.08 | 65.08 | a | ----- | z | ----- | z | ----- | z | ----- | z | 53.76 | d | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.26 | 39.28 | 43.37 | 50.61 | 58.38 | 66.13 | 67.95 | 66.50 | 61.70 | 53.50 | 44.05 | 38.57 | 52.21 | |||||||||||||
S.D. | 3.56 | 3.09 | 2.99 | 2.55 | 1.69 | 2.06 | 1.85 | 1.81 | 1.91 | 2.04 | 3.08 | 2.62 | 0.92 | |||||||||||||
SKEW | 0.04 | 0.25 | 0.13 | 0.08 | 0.31 | 0.08 | 0.13 | 0.46 | 0.16 | -0.34 | -0.36 | -0.26 | -0.24 | |||||||||||||
MAX | 43.76 | 47.06 | 49.52 | 55.72 | 63.42 | 70.29 | 72.48 | 70.66 | 65.75 | 58.31 | 48.93 | 43.66 | 53.89 | |||||||||||||
MIN | 29.38 | 32.68 | 37.55 | 46.22 | 54.65 | 61.93 | 63.17 | 63.27 | 57.53 | 47.89 | 37.44 | 33.00 | 50.28 | |||||||||||||
YRS | 36 | 35 | 35 | 36 | 36 | 38 | 37 | 37 | 35 | 33 | 35 | 34 | 28 |