YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 66.62 | b | 73.92 | 70.10 | 66.45 | 56.80 | a | 49.78 | 36.31 | 60.00 | e | |||||
1928 | 39.37 | 40.00 | 47.06 | d | 50.10 | 61.58 | 69.62 | 75.82 | 71.66 | c | 67.13 | 56.34 | 44.63 | 37.45 | 55.06 | |||||||||||
1929 | 35.55 | 35.57 | 43.82 | 49.13 | 58.18 | a | 67.05 | b | 73.87 | 72.34 | 66.20 | 56.70 | a | 43.50 | 41.69 | g | 54.72 | a | ||||||||
1930 | 33.39 | i | 44.46 | a | ----- | z | 53.77 | 48.93 | p | ----- | z | 75.69 | 71.11 | 62.93 | 53.58 | e | 41.60 | 35.87 | e | 54.88 | d | |||||
1931 | 36.98 | 42.38 | ----- | z | 54.40 | 59.70 | a | 73.92 | 75.39 | h | 72.23 | 66.32 | b | ----- | z | 43.18 | 31.67 | g | 56.14 | d | ||||||
1932 | ----- | z | ----- | z | 46.70 | p | 51.38 | 57.29 | e | ----- | z | ----- | z | ----- | z | 62.29 | i | 53.03 | 45.40 | 32.50 | 47.92 | g | ||||
1933 | 34.65 | 34.09 | 42.98 | 48.08 | 52.16 | ----- | z | ----- | z | 70.87 | ----- | z | 58.76 | 45.87 | 46.79 | l | 48.43 | d | ||||||||
1934 | ----- | z | 45.79 | 50.73 | 56.33 | 63.26 | ----- | z | 75.83 | v | 74.24 | 63.97 | 58.27 | ----- | z | ----- | z | 58.94 | e | |||||||
1935 | 39.62 | a | 41.61 | a | 42.87 | 51.71 | a | 52.81 | g | 66.78 | 69.66 | 73.12 | n | ----- | z | ----- | z | 42.53 | 38.24 | 49.13 | d | |||||
1936 | 36.65 | 40.24 | 44.92 | 52.57 | a | ----- | z | ----- | z | ----- | z | 72.53 | p | 65.48 | ----- | z | ----- | z | 37.25 | k | 47.97 | g | ||||
1937 | 24.34 | 38.84 | 43.31 | 49.97 | a | ----- | z | 62.85 | 73.52 | i | ----- | z | 68.60 | 56.20 | a | 45.22 | 40.95 | 47.81 | c | |||||||
1938 | 39.58 | 41.83 | h | 44.09 | c | 48.97 | ----- | z | 65.38 | 76.18 | l | 72.87 | 66.83 | ----- | z | 40.92 | 40.69 | 52.42 | d | |||||||
1939 | 38.36 | b | 32.29 | 46.87 | 54.78 | 59.65 | 69.37 | 79.68 | 74.27 | 68.53 | 55.68 | 51.91 | a | 46.83 | a | 56.52 | ||||||||||
1940 | 43.32 | 45.55 | 51.32 | 56.38 | ----- | z | 74.22 | ----- | z | ----- | z | 66.48 | a | ----- | z | 45.18 | 43.31 | 53.22 | d | |||||||
1941 | 41.31 | r | 45.18 | 45.65 | 47.30 | 59.31 | 64.40 | 71.48 | a | 71.10 | 63.34 | h | 52.97 | 46.55 | 40.74 | 54.47 | b | |||||||||
1942 | 39.35 | a | 37.18 | 43.42 | 49.88 | 56.79 | 66.72 | 75.42 | a | 71.58 | 66.58 | 56.06 | 48.00 | 42.82 | c | 54.48 | ||||||||||
1943 | 38.35 | 44.62 | 46.23 | 55.00 | 60.27 | 65.22 | ----- | z | 72.00 | 67.25 | 55.63 | 46.10 | 39.06 | 53.61 | a | |||||||||||
1944 | 36.58 | 39.45 | 42.85 | 48.13 | 57.50 | 64.53 | 72.40 | 73.73 | 66.23 | 57.94 | 43.13 | 39.73 | 53.52 | |||||||||||||
1945 | 37.65 | 41.09 | 41.53 | 48.82 | 58.08 | 64.18 | 74.24 | ----- | z | 66.05 | 58.29 | 44.66 | b | 35.92 | 51.86 | a | ||||||||||
1946 | 35.77 | 38.54 | 45.85 | 57.05 | 58.45 | 70.67 | 72.39 | 72.50 | 67.90 | 51.88 | w | 42.28 | 41.48 | a | 54.81 | a | ||||||||||
1947 | 33.98 | 43.14 | 45.52 | 50.43 | 61.50 | a | 66.00 | 74.56 | 70.95 | 75.04 | b | 59.03 | 41.17 | 36.29 | 54.80 | |||||||||||
1948 | 38.11 | 37.64 | a | 40.22 | b | 52.18 | 59.48 | 68.85 | 74.50 | 74.13 | a | 67.15 | 56.56 | 39.95 | 38.39 | 53.93 | ||||||||||
1949 | 29.84 | 38.70 | 45.34 | 53.37 | 58.89 | 66.02 | e | 72.97 | b | 70.85 | 68.97 | 53.94 | 49.60 | 37.50 | a | 53.83 | ||||||||||
1950 | 35.90 | 44.41 | 46.30 | a | 54.38 | 58.06 | 67.45 | 72.60 | a | 70.73 | 63.15 | 61.66 | 48.90 | 42.93 | a | 55.54 | ||||||||||
1951 | 37.55 | a | 40.70 | 44.94 | 51.38 | a | 58.58 | 64.72 | 75.48 | 70.78 | b | 65.53 | 55.34 | 43.75 | 37.61 | 53.86 | ||||||||||
1952 | 39.52 | 39.03 | 39.65 | 52.85 | 60.79 | 66.55 | 72.45 | 73.81 | 67.60 | 59.19 | 41.88 | a | 37.27 | 54.22 | ||||||||||||
1953 | 42.13 | 39.04 | 46.27 | 50.98 | 53.39 | 67.57 | 74.79 | 71.02 | 66.87 | 55.39 | 46.95 | a | 35.25 | a | 54.14 | |||||||||||
1954 | 38.57 | a | 45.73 | 44.06 | 55.12 | 60.52 | 65.62 | a | 73.07 | a | 68.94 | 67.12 | 57.24 | 48.02 | 36.32 | i | 56.73 | a | ||||||||
1955 | 35.43 | h | 35.41 | f | 42.23 | g | 48.02 | 56.35 | d | 63.60 | a | 68.59 | d | ----- | z | ----- | z | ----- | z | ----- | z | 40.11 | m | 59.14 | h | |
1956 | 40.72 | f | 34.68 | l | 46.48 | e | 49.90 | j | 59.96 | e | 72.27 | f | 71.73 | a | 69.32 | 68.17 | 54.00 | b | 41.67 | 36.92 | a | 56.03 | d | |||
1957 | 39.40 | 47.86 | 45.82 | 49.22 | 54.61 | 68.00 | 74.06 | 70.53 | 63.97 | 54.26 | 40.88 | 40.77 | a | 54.12 | ||||||||||||
1958 | 37.37 | d | 43.68 | 41.82 | 50.25 | 62.92 | a | 69.95 | 73.21 | 73.42 | 66.45 | 56.92 | 43.52 | a | 42.18 | 55.14 | ||||||||||
1959 | 40.20 | a | 38.96 | 44.66 | 56.08 | 59.82 | a | 71.95 | a | 75.81 | 70.13 | 63.93 | 53.66 | f | 45.38 | 40.69 | 55.24 | a | ||||||||
1960 | 31.73 | 36.33 | 48.74 | b | 52.78 | 57.73 | 69.38 | 75.61 | 75.75 | s | 64.92 | l | 54.27 | 46.42 | 36.47 | 50.95 | b | |||||||||
1961 | 39.92 | 41.30 | 45.38 | b | 51.93 | 58.45 | 71.10 | 75.55 | 72.03 | 63.37 | 54.34 | c | 43.88 | 37.52 | 54.56 | |||||||||||
1962 | 36.39 | 41.05 | 42.50 | j | 54.10 | 55.69 | 65.07 | b | 71.40 | 72.60 | 66.85 | 55.77 | 47.23 | 39.61 | 55.07 | a | ||||||||||
1963 | 33.65 | 42.66 | 42.05 | a | 48.98 | 60.08 | 62.86 | b | 73.67 | a | 69.97 | a | 66.53 | 56.89 | 48.64 | w | 40.83 | k | 55.73 | b | ||||||
1964 | 33.85 | 35.12 | 41.00 | a | 48.23 | 58.24 | 65.78 | 73.56 | 71.05 | 66.19 | a | 59.18 | 42.62 | 38.47 | 52.77 | |||||||||||
1965 | 41.79 | 39.66 | 42.60 | 51.05 | 56.89 | 63.48 | 74.74 | 72.38 | r | 64.23 | 58.69 | ----- | z | ----- | z | 54.79 | c | |||||||||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.65 | 33.73 | 40.69 | j | ||
1968 | 37.60 | 45.45 | 45.19 | 49.50 | 57.76 | 67.41 | a | 72.53 | 68.74 | d | 65.29 | f | 56.15 | e | 44.85 | d | 33.55 | i | 54.52 | b | ||||||
1969 | 41.80 | i | 39.45 | 42.44 | d | 52.00 | e | 57.04 | g | 63.46 | p | 74.09 | n | 75.87 | l | 67.48 | h | 52.98 | e | 44.94 | f | 41.66 | c | 45.71 | g | |
1970 | 29.92 | s | 43.39 | a | 42.66 | b | 46.57 | 60.05 | a | 65.91 | n | 75.62 | g | 73.62 | o | 65.02 | h | ----- | z | 43.70 | 38.92 | 45.88 | f | |||
1971 | 37.18 | 40.17 | a | 45.73 | 50.57 | 56.03 | 67.13 | c | 77.28 | f | 72.18 | c | 64.15 | 50.45 | a | 42.67 | 33.65 | 50.90 | a | |||||||
1972 | 35.92 | 39.29 | 48.84 | 50.47 | 57.42 | 67.12 | 74.98 | 71.02 | 65.75 | 54.48 | 41.03 | 36.56 | 53.57 | |||||||||||||
1973 | ----- | z | 38.32 | 40.98 | 48.45 | 61.40 | p | 70.48 | b | 73.74 | d | ----- | z | ----- | z | ----- | z | ----- | z | 37.80 | f | 54.40 | g | |||
1974 | 36.16 | 37.68 | 46.89 | ----- | z | ----- | z | ----- | z | ----- | z | 71.17 | e | 66.14 | a | 51.00 | r | 46.17 | 34.61 | 48.40 | e | |||||
1975 | 37.57 | b | 38.88 | 43.32 | 45.93 | a | 56.37 | ----- | z | 75.68 | f | ----- | z | 67.68 | 58.13 | 43.53 | ----- | z | 48.93 | d | ||||||
1976 | ----- | z | ----- | z | ----- | z | 49.19 | a | 59.18 | 67.30 | 72.66 | 71.13 | 65.52 | ----- | z | ----- | z | ----- | z | 64.16 | f | |||||
1977 | 38.82 | t | 42.07 | a | 41.02 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.31 | 49.43 | 41.45 | 48.57 | h | |||
1978 | 40.47 | 40.93 | 50.03 | 52.95 | 57.71 | 69.50 | 74.97 | a | 71.92 | ----- | z | ----- | z | ----- | z | ----- | z | 57.31 | d | |||||||
1979 | 34.97 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.97 | k | |
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 | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 37.07 | 40.63 | 44.77 | 51.32 | 58.43 | 67.29 | 73.77 | 71.58 | 66.40 | 56.28 | 44.79 | 38.66 | 54.38 | |||||||||||||
S.D. | 3.45 | 3.42 | 2.72 | 2.80 | 2.31 | 2.82 | 2.00 | 1.43 | 2.11 | 2.41 | 2.84 | 3.11 | 0.90 | |||||||||||||
SKEW | -1.34 | -0.09 | 0.42 | 0.25 | -0.39 | 0.60 | 0.02 | 0.19 | 1.53 | 0.06 | 0.44 | 0.26 | 0.62 | |||||||||||||
MAX | 43.32 | 47.86 | 51.32 | 57.05 | 63.26 | 74.22 | 79.68 | 74.27 | 75.04 | 61.66 | 51.91 | 46.83 | 56.52 | |||||||||||||
MIN | 24.34 | 32.29 | 39.65 | 45.93 | 52.16 | 62.85 | 68.59 | 68.74 | 62.93 | 50.45 | 39.95 | 32.50 | 52.77 | |||||||||||||
YRS | 39 | 44 | 42 | 46 | 39 | 39 | 35 | 36 | 38 | 37 | 42 | 37 | 16 |