YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.32 | ----- | z | ----- | z | ----- | z | 60.18 | b | 47.98 | b | 61.49 | i | |
1924 | 41.09 | n | ----- | 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 | 75.56 | f | 67.82 | 54.77 | a | 42.20 | 36.17 | a | 50.24 | h | ||
1959 | 27.37 | 35.32 | 39.44 | 49.62 | 60.77 | 71.85 | 74.71 | 75.11 | 65.32 | 50.90 | 39.86 | a | 34.27 | 52.05 | ||||||||||||
1960 | 26.30 | a | 20.67 | 38.98 | c | 53.57 | 59.62 | a | 70.55 | 73.18 | 75.21 | 66.80 | 53.85 | 44.02 | 30.40 | 51.10 | ||||||||||
1961 | 33.32 | a | 35.63 | a | 41.16 | 48.82 | 60.74 | 69.52 | 73.37 | 72.97 | 62.28 | 53.03 | 39.76 | a | 29.06 | 51.64 | ||||||||||
1962 | 24.69 | 37.89 | 37.18 | 53.12 | 63.24 | 68.65 | c | 74.06 | 75.06 | 67.20 | 58.26 | 43.30 | 36.29 | 53.25 | ||||||||||||
1963 | 22.19 | 38.62 | 42.15 | 55.57 | 65.12 | a | 74.13 | 78.76 | 73.81 | 69.45 | 61.44 | 45.07 | 29.60 | 54.66 | ||||||||||||
1964 | 31.67 | a | 27.91 | 38.69 | 50.20 | 61.89 | 69.95 | 79.18 | 73.89 | 66.62 | a | 55.50 | 42.71 | a | 36.07 | a | 52.86 | |||||||||
1965 | 37.06 | 32.59 | 30.90 | a | 53.77 | 61.32 | a | 67.83 | 74.84 | 71.23 | a | 62.10 | 55.06 | 47.43 | 38.47 | a | 52.72 | |||||||||
1966 | 23.90 | 27.61 | 45.06 | 50.38 | 62.82 | 71.31 | a | 78.37 | 71.52 | a | 66.40 | 52.85 | 44.90 | 30.47 | 52.13 | |||||||||||
1967 | 35.84 | 37.80 | a | 46.37 | a | 54.65 | 57.44 | 67.78 | 74.13 | 71.21 | 64.50 | 56.53 | 42.58 | 27.92 | 53.06 | |||||||||||
1968 | 33.45 | 36.79 | a | 42.77 | 48.36 | a | 57.66 | b | 72.23 | 74.65 | 71.61 | 65.08 | 57.44 | 40.66 | b | 32.40 | b | 52.76 | ||||||||
1969 | 37.70 | a | 37.43 | a | 31.18 | a | 54.30 | 61.29 | 65.48 | 76.71 | b | 76.44 | 66.73 | 46.17 | a | 41.48 | a | 33.95 | 52.40 | |||||||
1970 | 31.60 | a | 38.39 | 36.10 | 47.38 | 62.26 | 68.28 | 76.16 | 75.97 | 64.75 | 48.95 | 42.52 | 36.10 | a | 52.37 | |||||||||||
1971 | 33.85 | a | 33.70 | 43.19 | 50.41 | a | 57.84 | 72.12 | a | 74.43 | a | 71.95 | a | 62.08 | 52.29 | 43.07 | 35.11 | 52.50 | ||||||||
1972 | 32.82 | a | 40.48 | 48.92 | 52.41 | b | 59.68 | 71.95 | 73.78 | a | 72.57 | a | 65.83 | a | 54.80 | a | 31.83 | 27.72 | a | 52.73 | ||||||
1973 | 30.17 | a | 36.57 | 40.74 | 43.70 | b | 58.42 | 69.16 | a | 73.58 | a | 74.05 | a | 62.33 | a | ----- | z | 44.03 | 32.87 | a | 51.42 | a | ||||
1974 | 28.67 | b | 36.46 | b | 45.97 | a | 51.00 | 63.84 | 69.22 | 76.15 | a | 70.81 | 63.55 | 55.65 | 41.75 | 29.55 | 52.72 | |||||||||
1975 | 32.93 | b | 34.14 | 41.45 | 49.82 | 58.44 | 69.37 | 74.27 | 75.40 | a | 62.22 | 55.13 | a | 36.05 | 36.62 | a | 52.15 | |||||||||
1976 | 32.38 | a | 41.36 | 41.84 | 53.98 | 60.05 | 71.95 | a | 76.47 | 73.03 | 64.27 | 49.37 | 38.07 | 34.18 | 53.08 | |||||||||||
1977 | 29.50 | 35.76 | a | 41.87 | 52.67 | a | 63.48 | 73.65 | 76.72 | a | 72.44 | 67.92 | 51.58 | 41.72 | 34.50 | 53.48 | ||||||||||
1978 | 24.18 | a | 27.43 | a | 43.07 | a | 51.98 | a | 59.23 | a | 73.40 | 79.20 | f | 74.06 | ----- | z | 52.57 | a | 37.25 | b | 26.70 | a | 46.99 | b | ||
1979 | ----- | z | 26.37 | a | ----- | z | ----- | z | ----- | z | 67.15 | q | ----- | z | ----- | z | 65.34 | b | ----- | z | ----- | z | 31.36 | t | 45.85 | j |
1980 | 21.22 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.74 | a | ----- | z | ----- | z | ----- | z | 42.98 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.04 | 34.23 | 40.85 | 51.29 | 60.76 | 70.42 | 75.49 | 73.42 | 65.15 | 53.81 | 42.29 | 33.47 | 52.65 | |||||||||||||
S.D. | 4.84 | 5.31 | 4.57 | 2.90 | 2.25 | 2.27 | 1.82 | 1.73 | 2.12 | 3.48 | 5.24 | 4.68 | 0.77 | |||||||||||||
SKEW | -0.29 | -0.99 | -0.64 | -0.77 | 0.18 | -0.20 | 0.64 | 0.12 | 0.04 | -0.09 | 1.45 | 1.13 | 0.51 | |||||||||||||
MAX | 37.70 | 41.36 | 48.92 | 55.57 | 65.12 | 74.13 | 79.18 | 76.44 | 69.45 | 61.44 | 60.18 | 47.98 | 54.66 | |||||||||||||
MIN | 21.22 | 20.67 | 30.90 | 43.70 | 57.44 | 65.48 | 73.18 | 70.81 | 62.08 | 46.17 | 31.83 | 26.70 | 51.10 | |||||||||||||
YRS | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 22 | 20 | 22 | 22 | 18 |