YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | 41.27 | s | 36.57 | a | 36.57 | k |
1948 | 42.94 | 38.81 | c | 37.08 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.87 | j | |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.42 | 76.84 | 73.17 | 71.90 | ----- | z | ----- | z | 74.83 | h | ||||
1951 | 53.94 | n | 40.82 | 49.65 | h | 50.19 | i | 57.15 | k | 69.36 | h | 74.58 | 67.69 | e | ----- | z | 54.85 | e | 50.67 | x | 38.71 | j | 59.49 | h | ||
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.48 | d | 73.27 | 63.26 | 49.58 | d | 42.13 | h | 65.40 | h | ||
1956 | 41.97 | 35.07 | 50.68 | 50.30 | 65.32 | 78.67 | 78.97 | 75.29 | 75.90 | 60.03 | a | 44.53 | 42.00 | 58.23 | ||||||||||||
1957 | 36.20 | a | 45.68 | 43.32 | 54.20 | 61.48 | 74.20 | ----- | z | 85.80 | k | 74.47 | 54.48 | 42.80 | 47.84 | 53.47 | b | |||||||||
1958 | 37.90 | 45.22 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.56 | j | |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.13 | 74.77 | 55.65 | 47.93 | 40.32 | 60.36 | g | |||||
1961 | 43.42 | 44.04 | a | 45.17 | a | ----- | z | 64.26 | 80.50 | 82.81 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.03 | f | ||||
1962 | ----- | z | ----- | z | 43.35 | h | ----- | z | ----- | z | ----- | z | 80.77 | 81.23 | 75.33 | 62.52 | 54.38 | f | 45.10 | a | 68.99 | g | ||||
1963 | 37.14 | b | 47.08 | b | 44.38 | b | 49.64 | h | ----- | z | 73.54 | d | 82.87 | 75.35 | 74.44 | c | 65.42 | e | 49.68 | e | 44.21 | g | 61.10 | c | ||
1964 | 30.65 | e | 26.84 | d | 38.29 | c | 49.50 | j | 62.50 | g | 73.37 | 81.69 | b | 78.42 | l | 72.50 | h | ----- | z | 45.67 | o | 42.73 | p | 50.17 | g | |
1965 | 43.13 | a | 42.57 | 40.26 | 49.55 | a | 56.75 | o | 68.28 | e | 77.10 | b | 78.65 | 69.20 | e | ----- | z | ----- | z | 42.07 | a | 56.76 | c | |||
1966 | 36.77 | 36.18 | 49.68 | 57.59 | a | 67.50 | w | 78.38 | q | 78.87 | a | 80.00 | i | ----- | z | ----- | z | ----- | z | 40.36 | f | 51.82 | g | |||
1967 | 42.74 | 46.36 | ----- | z | ----- | z | ----- | z | 68.93 | a | 79.52 | 78.48 | 68.77 | 65.14 | c | 51.20 | 36.74 | 59.76 | c | |||||||
1968 | 41.70 | a | 44.79 | 47.16 | 48.07 | ----- | z | ----- | z | 79.42 | 72.00 | 71.83 | 63.45 | 46.80 | 37.21 | l | 57.25 | c | ||||||||
1969 | 41.45 | b | 39.12 | c | 43.20 | f | 57.50 | f | 66.97 | 71.60 | 79.81 | 80.57 | a | 72.34 | a | 52.69 | b | 47.70 | 43.03 | 59.53 | b | |||||
1970 | 40.94 | 46.00 | 44.90 | 49.90 | 66.06 | ----- | z | 79.81 | 78.81 | 71.21 | b | 58.76 | b | 47.33 | 40.42 | 56.74 | a | |||||||||
1971 | 42.97 | 43.43 | 49.35 | 56.47 | ----- | z | 78.70 | g | 83.40 | a | 75.13 | 70.03 | 53.58 | e | 46.43 | 34.10 | 55.49 | b | ||||||||
1972 | 41.94 | 47.32 | a | 57.61 | 54.00 | 66.19 | 72.23 | 83.61 | 76.19 | 68.67 | 53.48 | b | 42.83 | 39.77 | a | 58.65 | ||||||||||
1973 | 37.30 | a | ----- | z | 39.23 | 47.80 | 65.79 | c | ----- | z | 82.03 | 80.70 | k | 73.90 | 65.40 | a | 49.33 | ----- | z | 57.60 | d | |||||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.45 | b | 78.65 | ----- | z | 59.23 | ----- | z | ----- | z | 72.44 | i | ||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.19 | 78.13 | 71.53 | 59.79 | g | 50.17 | a | 44.74 | 64.95 | g | ||||
1976 | 43.63 | a | 45.00 | ----- | z | 54.03 | ----- | z | 75.73 | 78.35 | 79.06 | 65.25 | j | ----- | z | ----- | z | ----- | z | 62.64 | f | |||||
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 45.80 | a | 45.80 | k |
1982 | 37.81 | 40.64 | 43.19 | 51.20 | 63.30 | a | 72.83 | 77.23 | 74.68 | 67.87 | 55.71 | 43.45 | a | 38.50 | a | 55.53 | ||||||||||
1983 | 41.90 | 40.85 | a | 42.26 | 45.23 | 61.16 | 73.36 | b | 77.84 | 74.42 | 72.63 | 58.35 | 46.77 | 39.80 | a | 56.21 | ||||||||||
1984 | 40.30 | a | 41.38 | 47.29 | 49.93 | a | 70.87 | 73.40 | 77.23 | 75.65 | 73.40 | e | 52.13 | 45.00 | 38.53 | a | 57.09 | |||||||||
1985 | 38.73 | a | 39.07 | 43.94 | 57.40 | 66.39 | 78.47 | 79.35 | 79.74 | 66.07 | 57.18 | c | 43.72 | e | 43.73 | a | 57.82 | |||||||||
1986 | 46.35 | 41.44 | c | 50.31 | e | 56.60 | e | 66.39 | 77.43 | 77.53 | a | 78.00 | c | 65.08 | d | 53.78 | d | 45.21 | b | 38.97 | 58.09 | |||||
1987 | 39.00 | a | 38.36 | 42.26 | 57.30 | 60.97 | 76.85 | d | 77.13 | 76.35 | h | 72.18 | h | 55.33 | m | ----- | z | ----- | z | 55.98 | e | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.30 | 41.57 | 45.51 | 52.47 | 65.01 | 74.34 | 79.48 | 76.96 | 71.61 | 58.90 | 46.69 | 41.00 | 57.38 | |||||||||||||
S.D. | 3.40 | 4.72 | 4.78 | 3.97 | 2.77 | 3.42 | 2.30 | 3.31 | 3.05 | 5.36 | 2.64 | 3.60 | 1.15 | |||||||||||||
SKEW | -0.85 | -1.30 | 0.71 | -0.14 | 0.18 | 0.03 | 0.17 | -0.74 | -0.60 | 0.66 | 0.04 | 0.06 | -0.56 | |||||||||||||
MAX | 46.35 | 47.32 | 57.61 | 57.59 | 70.87 | 80.50 | 83.61 | 83.13 | 75.90 | 71.90 | 51.20 | 47.84 | 58.65 | |||||||||||||
MIN | 30.65 | 26.84 | 38.29 | 45.23 | 60.97 | 68.28 | 74.58 | 67.69 | 65.08 | 52.13 | 42.80 | 34.10 | 55.53 | |||||||||||||
YRS | 23 | 23 | 18 | 16 | 13 | 16 | 25 | 22 | 21 | 21 | 18 | 18 | 7 |