YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1918 | ----- | z | ----- | z | ----- | z | 45.86 | e | 51.21 | l | 66.86 | p | 66.71 | 64.98 | 59.05 | 47.56 | g | ----- | z | ----- | z | 59.15 | h | |||
1919 | 22.14 | f | 26.54 | e | 36.55 | i | 46.86 | a | 53.42 | a | ----- | z | ----- | z | ----- | z | 53.62 | ----- | z | ----- | z | ----- | z | 45.11 | h | |
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 | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.24 | 34.24 | k | |
1959 | 29.79 | 32.32 | 36.62 | a | 48.65 | 55.47 | 66.47 | 67.73 | 65.00 | h | 60.38 | 52.00 | e | 37.21 | i | 31.13 | 48.06 | b | ||||||||
1960 | 25.81 | 27.34 | 40.18 | 44.75 | 50.93 | a | 65.55 | 69.73 | 67.77 | 62.25 | 47.58 | a | 41.80 | 28.87 | 47.71 | |||||||||||
1961 | 28.83 | a | 31.48 | 38.20 | a | 43.85 | 53.52 | a | 65.75 | b | 69.56 | 67.91 | b | 58.02 | 50.08 | 35.93 | b | 28.06 | 47.60 | |||||||
1962 | 26.65 | 35.23 | ----- | z | 50.98 | a | 50.00 | a | 58.95 | 68.26 | 68.05 | 60.90 | 52.82 | 40.52 | a | 33.65 | a | 49.64 | a | |||||||
1963 | 26.34 | b | 35.48 | b | 38.40 | 47.32 | 55.88 | a | 59.42 | 67.40 | a | 58.37 | 61.89 | p | 59.45 | u | ----- | z | ----- | z | 48.58 | d | ||||
1964 | 22.15 | ----- | z | 29.07 | a | 35.29 | a | 55.58 | 62.79 | b | 68.31 | 65.23 | a | 60.34 | a | 52.65 | a | 36.80 | b | 32.17 | k | 48.82 | b | |||
1965 | 31.67 | a | 31.62 | 41.12 | w | 45.92 | 51.42 | 63.53 | 68.06 | 68.04 | d | 57.83 | 51.23 | 42.45 | 32.19 | j | 51.18 | b | ||||||||
1966 | 25.29 | ----- | z | ----- | z | 45.32 | 57.55 | a | 63.72 | a | 70.47 | b | 66.47 | a | 58.45 | 50.52 | 39.52 | e | 27.85 | 50.52 | b | |||||
1967 | 28.48 | 35.59 | 42.52 | 47.16 | a | 54.62 | a | 61.95 | 68.69 | 64.19 | 58.15 | 51.39 | 42.48 | 25.52 | 48.39 | |||||||||||
1968 | 26.80 | a | 34.86 | 36.67 | a | 41.88 | a | 53.37 | 65.10 | a | 66.66 | 62.98 | a | 57.74 | a | 50.45 | 32.70 | e | ----- | z | 48.11 | a | ||||
1969 | 31.65 | a | 30.00 | ----- | z | 46.92 | 56.32 | 63.42 | 69.97 | 68.94 | 60.48 | 44.34 | ----- | z | ----- | z | 52.45 | c | ||||||||
1970 | ----- | z | 36.07 | 34.89 | 42.80 | 57.47 | 64.18 | 69.55 | a | 68.31 | 59.58 | 44.53 | 40.37 | c | 31.50 | 49.93 | a | |||||||||
1971 | 30.58 | ----- | z | 39.75 | a | 45.53 | 53.92 | 66.27 | 69.40 | a | 66.05 | a | 59.90 | 46.56 | 38.10 | 26.66 | 49.34 | a | ||||||||
1972 | 31.88 | b | 36.14 | 46.66 | 49.18 | 57.50 | 64.25 | 70.90 | 66.03 | 60.65 | 50.94 | 32.77 | 28.84 | 49.64 | ||||||||||||
1973 | 24.82 | 31.25 | 36.10 | 40.92 | 54.39 | 64.50 | 67.44 | 66.56 | 59.93 | 51.48 | 40.83 | ----- | z | 48.93 | a | |||||||||||
1974 | 28.98 | 31.68 | 45.47 | a | 47.03 | 60.05 | 69.30 | 67.27 | 65.53 | 60.12 | 51.08 | 39.52 | b | 28.02 | 49.50 | |||||||||||
1975 | 24.97 | p | 31.11 | 38.40 | 43.55 | 53.26 | 64.28 | 67.24 | 66.32 | 57.47 | 50.67 | a | 42.19 | q | 27.85 | a | 50.01 | b | ||||||||
1976 | 26.73 | 36.91 | 32.03 | 45.22 | 55.85 | 65.65 | 69.20 | a | 65.05 | 60.00 | 46.40 | 36.75 | 22.56 | 46.86 | ||||||||||||
1977 | 22.06 | 30.29 | 31.15 | 49.69 | f | 54.90 | 68.23 | 69.11 | 68.03 | 62.08 | 52.84 | b | 39.55 | h | 34.85 | a | 49.36 | b | ||||||||
1978 | 29.63 | 29.98 | 42.48 | 48.61 | b | 53.11 | 67.30 | 71.11 | 65.89 | 60.03 | 53.18 | a | 39.59 | a | 24.47 | a | 48.78 | |||||||||
1979 | 21.84 | 27.23 | 37.85 | 45.52 | b | 54.85 | 64.64 | a | 70.89 | 66.02 | 63.32 | 54.00 | a | 34.09 | m | 31.38 | n | 50.62 | b | |||||||
1980 | 26.41 | b | 31.14 | a | 36.66 | 43.73 | 53.16 | 67.80 | 72.35 | 67.70 | a | 61.98 | 48.08 | 38.24 | a | 37.21 | 48.71 | |||||||||
1981 | 35.32 | 35.21 | 37.31 | 52.17 | a | 55.79 | 69.93 | 68.06 | 66.79 | 60.87 | 49.05 | 40.77 | 30.10 | 50.11 | ||||||||||||
1982 | ----- | z | 25.30 | a | 37.70 | a | 46.09 | a | 54.45 | a | 65.22 | 69.27 | 65.95 | a | 60.07 | b | 44.05 | 36.88 | a | 28.02 | a | 48.45 | a | |||
1983 | 26.88 | b | 28.19 | a | 35.60 | 35.25 | d | 53.44 | 61.84 | b | 67.79 | 66.40 | 61.67 | 50.05 | 38.33 | 27.73 | a | 46.10 | ||||||||
1984 | 25.72 | a | 31.54 | c | 38.85 | a | 43.62 | 60.10 | 64.86 | a | 69.08 | 66.81 | 60.87 | 43.84 | b | 38.28 | 30.63 | a | 47.85 | |||||||
1985 | 26.52 | 24.05 | 40.31 | 49.84 | a | 57.50 | 67.78 | 70.31 | 67.97 | 58.17 | 48.23 | 35.07 | 29.34 | 47.92 | ||||||||||||
1986 | 35.18 | 33.38 | 43.74 | 49.28 | 57.48 | c | 66.07 | 67.92 | 68.92 | 59.53 | 49.06 | 38.55 | a | 32.00 | 50.09 | |||||||||||
1987 | 29.52 | 32.06 | a | 36.65 | 50.75 | f | 54.52 | 65.40 | 69.47 | b | 65.74 | 60.16 | a | 53.83 | a | 38.80 | 30.27 | a | 48.76 | a | ||||||
1988 | 28.97 | 37.29 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.13 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.94 | 31.76 | 38.13 | 45.49 | 54.99 | 64.97 | 68.93 | 66.31 | 59.79 | 49.68 | 38.48 | 29.54 | 48.41 | |||||||||||||
S.D. | 3.47 | 3.60 | 4.12 | 3.87 | 2.37 | 2.54 | 1.42 | 2.08 | 1.86 | 3.03 | 2.68 | 3.41 | 1.23 | |||||||||||||
SKEW | 0.25 | -0.33 | -0.00 | -1.00 | 0.19 | -0.36 | 0.36 | -1.93 | -1.02 | -0.58 | -0.59 | 0.26 | -0.19 | |||||||||||||
MAX | 35.32 | 37.29 | 46.66 | 52.17 | 60.10 | 69.93 | 72.35 | 68.94 | 63.32 | 54.00 | 42.48 | 37.21 | 50.11 | |||||||||||||
MIN | 21.84 | 24.05 | 29.07 | 35.25 | 50.00 | 58.95 | 66.66 | 58.37 | 53.62 | 43.84 | 32.70 | 22.56 | 46.10 | |||||||||||||
YRS | 27 | 28 | 25 | 29 | 30 | 29 | 30 | 29 | 30 | 28 | 23 | 23 | 13 |