YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 30.48 | j | ----- | z |
1916 | 18.94 | 30.22 | 33.24 | 37.67 | 39.66 | 47.93 | 52.74 | 59.62 | b | 49.74 | c | 44.26 | 30.18 | 26.87 | 39.26 | |||||||||||
1917 | 27.47 | a | 28.94 | a | 29.66 | 34.08 | 40.89 | 46.33 | a | 58.38 | a | 59.63 | a | 51.95 | a | 44.69 | b | 40.31 | a | 28.26 | 40.88 | |||||
1918 | 30.90 | b | 25.38 | 36.20 | a | 41.83 | 46.35 | e | ----- | z | 59.12 | b | 59.14 | c | 58.88 | b | 45.84 | 34.38 | b | 30.16 | 42.56 | a | ||||
1919 | 30.15 | 29.54 | 34.86 | b | 40.27 | 43.88 | a | 52.08 | x | 58.93 | b | 58.62 | a | ----- | z | 42.13 | a | 35.96 | q | ----- | z | 42.30 | d | |||
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.48 | a | 58.52 | c | 58.78 | a | 50.67 | a | 42.52 | c | 32.97 | 28.18 | 46.16 | e | ||
1921 | 26.52 | 28.89 | a | 31.81 | b | 34.30 | 43.82 | c | 52.25 | f | 55.20 | a | 56.08 | 50.14 | e | 46.00 | e | 33.47 | 26.43 | a | 39.33 | a | ||||
1922 | 22.38 | b | 25.25 | b | 29.23 | 34.75 | 41.65 | a | 56.38 | 58.69 | 57.74 | 52.53 | a | 42.45 | 31.93 | c | 25.79 | 39.90 | ||||||||
1923 | 29.66 | i | 26.62 | c | 31.45 | k | 37.15 | j | 38.17 | b | 48.54 | c | 57.68 | c | 58.53 | a | 48.05 | 41.20 | a | 38.45 | a | 32.47 | 43.30 | c | ||
1924 | 24.82 | 33.00 | 32.77 | 37.26 | a | 49.02 | b | 53.02 | b | 56.52 | a | 56.12 | b | 49.88 | d | 42.50 | c | 31.48 | e | 22.22 | d | 40.72 | ||||
1925 | 30.55 | 31.92 | b | 33.02 | 39.93 | a | 47.78 | d | 52.93 | a | 59.87 | a | 55.73 | 52.20 | 44.70 | a | 33.42 | 31.68 | 42.81 | |||||||
1926 | 28.71 | l | 34.55 | 38.92 | 45.22 | 45.50 | 53.85 | 57.81 | 56.40 | 46.80 | 44.61 | 39.58 | 29.76 | 44.82 | a | |||||||||||
1927 | 27.06 | 32.70 | 34.98 | 38.59 | a | 40.37 | 49.78 | 56.56 | 55.82 | 49.20 | 43.42 | a | 36.93 | a | 27.71 | b | 41.09 | |||||||||
1928 | 28.95 | a | 32.60 | 37.00 | 39.08 | 48.66 | 49.52 | 57.37 | 55.06 | 51.24 | a | 43.21 | 35.17 | a | ----- | z | 43.44 | a | ||||||||
1929 | ----- | z | ----- | z | ----- | z | 35.52 | a | 44.31 | 49.95 | a | 55.77 | 57.23 | 52.00 | 45.39 | 35.28 | 32.38 | o | 46.93 | d | ||||||
1930 | ----- | z | ----- | z | ----- | z | 42.05 | 43.84 | 49.95 | 56.42 | 58.32 | 51.85 | 40.27 | 32.63 | 26.56 | 44.66 | c | |||||||||
1931 | 29.23 | 29.68 | 34.22 | a | 40.00 | 48.06 | 51.80 | 57.15 | 56.53 | 50.12 | 42.90 | 30.35 | 24.72 | a | 41.23 | |||||||||||
1932 | 24.65 | 25.45 | 31.97 | 38.05 | 42.34 | 50.72 | 52.58 | 55.43 | a | 51.27 | 44.10 | 35.08 | 23.84 | 39.62 | ||||||||||||
1933 | 27.94 | 22.98 | 31.03 | 36.88 | 42.03 | 47.65 | 54.50 | 58.27 | 47.03 | 45.26 | 37.67 | 31.79 | 40.25 | |||||||||||||
1934 | 32.47 | 35.02 | 39.94 | 47.15 | 48.37 | p | 53.54 | e | 56.40 | j | 59.37 | e | 47.95 | h | 47.32 | l | 36.28 | 29.64 | b | 41.67 | d | |||||
1935 | 26.88 | c | 32.11 | e | 31.67 | e | 39.28 | c | 45.84 | 52.16 | a | 55.82 | f | ----- | z | 55.32 | b | 44.61 | h | 31.17 | g | 27.21 | g | 40.46 | e | |
1936 | 28.71 | e | 15.56 | c | 31.98 | h | 41.09 | a | 46.64 | b | 52.17 | f | 58.62 | b | 59.14 | b | 50.67 | j | 49.57 | j | ----- | z | 31.20 | c | 40.14 | e |
1937 | 14.57 | h | 24.19 | g | 36.76 | b | 36.66 | a | 46.29 | 51.81 | a | 60.98 | e | 56.05 | c | 54.19 | a | 47.16 | 35.30 | c | 29.85 | 45.51 | b | |||
1938 | 28.00 | c | 28.93 | a | 32.86 | b | 40.25 | 46.10 | a | 54.07 | a | 62.31 | 57.15 | 59.27 | 45.58 | a | 30.88 | d | 29.86 | b | 42.94 | |||||
1939 | 31.02 | a | 26.46 | 34.60 | 41.38 | 46.15 | a | 48.17 | c | 57.11 | 59.71 | 53.27 | b | 44.36 | c | 37.79 | b | 32.47 | a | 42.71 | ||||||
1940 | 28.17 | d | 31.47 | 37.87 | 40.98 | a | 49.39 | 54.43 | b | 57.38 | b | 57.95 | 55.57 | a | 45.72 | a | 29.38 | a | 29.87 | a | 43.18 | |||||
1941 | 29.40 | 32.77 | 39.70 | a | 44.50 | 46.24 | 52.30 | 62.34 | 58.47 | 48.02 | 44.58 | 36.98 | 29.92 | a | 43.77 | |||||||||||
1942 | 23.53 | 30.33 | b | 35.06 | 42.35 | 45.29 | 50.35 | 61.94 | 62.75 | a | 57.25 | 47.35 | 31.13 | 29.37 | 43.06 | |||||||||||
1943 | 19.34 | 32.42 | b | 32.65 | a | 42.40 | 43.50 | 51.16 | b | 61.98 | g | 57.83 | b | 58.18 | b | 46.27 | c | 36.15 | 28.58 | a | 40.77 | a | ||||
1944 | 27.15 | 30.57 | 33.31 | 40.97 | 46.24 | 52.65 | 58.97 | 56.00 | a | 56.37 | 51.19 | 33.82 | 25.26 | 42.71 | ||||||||||||
1945 | 29.27 | 32.74 | c | 33.34 | ----- | z | ----- | z | 51.02 | e | 59.85 | n | ----- | z | 48.47 | o | 45.92 | l | 31.03 | m | ----- | z | 36.59 | h | ||
1946 | 29.26 | h | 29.58 | d | 34.46 | d | 40.07 | i | 47.92 | e | 49.00 | d | 58.11 | d | 56.43 | q | 51.86 | e | 38.92 | e | 31.23 | f | 29.29 | g | 44.27 | e |
1947 | ----- | z | 35.42 | i | 37.91 | d | 42.20 | g | 47.58 | m | 48.92 | f | 55.78 | f | 54.17 | j | 52.90 | e | 41.50 | f | 33.81 | f | 29.86 | c | 40.22 | i |
1948 | 25.33 | e | 26.14 | h | 31.32 | i | 35.15 | f | 43.60 | j | 53.65 | f | 54.98 | h | 54.76 | h | 48.86 | e | 41.96 | h | 32.04 | f | 23.17 | g | 37.09 | j |
1949 | 13.79 | j | 25.17 | j | 35.17 | k | 40.42 | l | 46.58 | g | 48.71 | p | 56.07 | q | 55.73 | i | 53.30 | j | 40.96 | h | 39.61 | h | 28.57 | i | ----- | z |
1950 | 10.38 | n | 25.55 | g | 30.82 | l | 37.25 | l | 43.14 | i | 48.98 | j | 57.96 | s | 58.79 | l | 54.95 | i | 39.50 | g | ----- | z | 27.31 | j | ----- | z |
1951 | 24.46 | d | 30.83 | j | 29.66 | l | 41.67 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.46 | k |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.98 | k | 32.38 | 28.87 | 30.63 | j | ||
1953 | 34.19 | 31.86 | 33.88 | a | 38.91 | c | 43.71 | 46.63 | 57.26 | j | 59.15 | k | 53.41 | m | 47.16 | i | 36.45 | a | 31.94 | 37.20 | d | |||||
1954 | 23.58 | 30.00 | 31.06 | 35.63 | o | 46.26 | l | 45.87 | 53.88 | a | 53.72 | a | 52.36 | b | 42.82 | 39.03 | o | 28.87 | d | 40.24 | c | |||||
1955 | 28.04 | h | 28.88 | b | 29.28 | b | 35.84 | b | 42.05 | 49.93 | 53.82 | a | 56.97 | 51.82 | 43.13 | a | 28.66 | b | 24.69 | 40.46 | a | |||||
1956 | 26.00 | 23.91 | 31.71 | 42.39 | b | 49.98 | 47.73 | 59.68 | 58.05 | 53.25 | 41.18 | 32.38 | 30.85 | 41.43 | ||||||||||||
1957 | 18.25 | a | 29.14 | 34.69 | 40.82 | 49.11 | 53.29 | a | 55.10 | 54.91 | i | 58.20 | 42.79 | 34.90 | a | 33.07 | b | 40.85 | a | |||||||
1958 | 30.55 | 36.07 | a | 36.02 | h | 39.63 | 52.79 | 57.03 | a | 63.32 | 61.61 | 51.77 | 46.22 | a | 31.90 | 32.17 | a | 45.73 | a | |||||||
1959 | 27.02 | 29.62 | 34.05 | 39.78 | a | 43.63 | 51.88 | 59.57 | a | 55.32 | 49.65 | 44.48 | 33.54 | b | 29.58 | a | 41.51 | |||||||||
1960 | 25.55 | 29.19 | 34.26 | 40.72 | 43.40 | 52.77 | 62.26 | 54.87 | 53.60 | 46.02 | 33.83 | 27.53 | 42.00 | |||||||||||||
1961 | 30.05 | a | 32.98 | a | 35.45 | 37.80 | 45.35 | 57.57 | 61.03 | 63.66 | 49.70 | 42.65 | 29.42 | 27.35 | 42.75 | |||||||||||
1962 | 28.24 | 32.23 | 32.89 | 41.93 | a | 41.34 | b | 50.85 | 56.47 | a | 55.92 | 54.60 | 45.06 | 36.05 | 31.98 | 42.30 | ||||||||||
1963 | 24.26 | 37.48 | 35.63 | 38.57 | 47.18 | 51.05 | 54.71 | 58.56 | 59.41 | a | 45.98 | 34.20 | 28.08 | a | 42.93 | |||||||||||
1964 | 28.94 | 31.86 | 32.63 | a | 36.60 | a | 42.81 | 47.97 | 55.47 | 53.97 | 49.65 | 45.92 | a | 31.60 | 23.63 | a | 40.09 | |||||||||
1965 | 30.66 | b | 31.35 | a | 34.40 | 41.32 | 43.73 | 52.13 | 60.92 | a | 58.42 | a | 50.83 | 47.81 | 37.32 | 27.82 | 43.06 | |||||||||
1966 | 27.68 | 31.16 | 34.48 | a | 40.33 | a | 46.52 | 50.22 | 55.21 | 57.39 | 55.55 | 44.22 | b | 35.82 | 32.37 | 42.58 | ||||||||||
1967 | 30.73 | 33.93 | 31.53 | a | 37.33 | 45.95 | a | 55.98 | 59.10 | 64.81 | 58.27 | 44.39 | 35.95 | b | 30.00 | 44.00 | ||||||||||
1968 | 28.17 | a | 34.80 | a | 37.24 | 37.98 | 46.71 | 52.40 | 60.60 | 56.06 | 53.26 | a | ----- | z | 33.91 | b | 23.68 | a | 42.26 | a | ||||||
1969 | 17.79 | 28.84 | 36.44 | 38.54 | d | 48.69 | b | 57.13 | 56.68 | 54.53 | 51.33 | 41.68 | 36.03 | a | 29.40 | 41.42 | ||||||||||
1970 | 25.95 | c | 34.62 | 34.94 | 35.62 | 45.11 | c | 55.71 | a | 58.43 | b | 59.37 | a | 50.36 | a | 42.65 | 32.73 | b | 26.19 | 41.81 | ||||||
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.00 | e | 26.16 | b | 29.58 | j |
1972 | 23.10 | e | 26.61 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.10 | k |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.91 | 30.30 | 34.17 | 39.47 | 45.20 | 51.48 | 57.90 | 57.74 | 52.57 | 44.27 | 34.16 | 28.62 | 41.85 | |||||||||||||
S.D. | 3.72 | 3.89 | 2.58 | 2.85 | 2.99 | 2.94 | 2.69 | 2.40 | 3.33 | 2.22 | 2.75 | 2.74 | 1.30 | |||||||||||||
SKEW | -0.73 | -1.27 | 0.25 | 0.26 | -0.03 | 0.20 | 0.02 | 0.87 | 0.51 | 0.30 | 0.06 | -0.41 | -0.36 | |||||||||||||
MAX | 34.19 | 37.48 | 39.94 | 47.15 | 52.79 | 57.57 | 63.32 | 64.81 | 59.41 | 51.19 | 40.31 | 33.07 | 44.00 | |||||||||||||
MIN | 17.79 | 15.56 | 29.23 | 34.08 | 38.17 | 45.87 | 52.58 | 53.72 | 46.80 | 38.92 | 28.66 | 22.22 | 39.26 | |||||||||||||
YRS | 44 | 45 | 44 | 44 | 45 | 45 | 44 | 44 | 46 | 43 | 45 | 46 | 27 |