YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1914 | ----- | z | ----- | z | ----- | z | 34.15 | c | 38.77 | 40.55 | a | 42.52 | 39.90 | 32.40 | 30.13 | 24.77 | 28.32 | 34.61 | c | |||||||
1915 | 28.81 | 31.39 | 31.87 | 37.80 | 40.94 | 39.59 | a | 45.56 | v | 46.76 | n | 35.77 | 30.23 | 34.23 | 30.45 | 34.11 | b | |||||||||
1916 | 22.42 | 30.10 | 31.52 | 30.87 | 33.77 | a | 38.63 | 44.16 | 42.55 | 37.60 | 28.32 | 26.03 | ----- | z | 33.27 | a | ||||||||||
1917 | 16.47 | a | 25.00 | 24.97 | 32.34 | a | 35.84 | 39.80 | 45.06 | 44.29 | 39.33 | 28.87 | 30.63 | 29.90 | 32.71 | |||||||||||
1918 | 26.58 | 26.68 | 29.00 | a | 28.59 | a | 31.81 | 39.37 | 40.61 | 42.42 | 41.70 | 34.87 | 29.13 | 20.84 | f | 33.71 | a | |||||||||
1919 | 23.16 | 27.43 | 27.00 | 32.27 | ----- | z | 34.17 | 43.32 | 40.74 | 35.17 | 24.74 | 21.87 | 24.84 | l | 30.99 | b | ||||||||||
1920 | 21.81 | 20.17 | 27.17 | a | 28.07 | c | 30.90 | 38.73 | 43.23 | 44.23 | 39.30 | 34.39 | 29.60 | 25.84 | 31.95 | |||||||||||
1921 | 24.26 | 28.25 | 31.23 | 27.93 | 33.55 | 39.10 | 42.23 | 48.78 | v | ----- | z | ----- | z | 28.03 | 25.42 | 31.11 | c | |||||||||
1922 | 19.58 | 23.25 | 26.48 | 27.33 | 33.13 | 41.63 | 40.07 | b | 40.68 | 35.73 | 36.23 | 24.90 | 30.80 | a | 31.65 | |||||||||||
1923 | 26.97 | 22.07 | 24.00 | a | 33.47 | 32.84 | 41.40 | 43.61 | 43.81 | 39.00 | 33.26 | 29.70 | 23.26 | 32.78 | ||||||||||||
1924 | 19.45 | 28.83 | 21.77 | 27.77 | 35.87 | 39.40 | 42.84 | 42.94 | 34.90 | 34.68 | 29.70 | 24.65 | 31.90 | |||||||||||||
1925 | 31.19 | 30.86 | 27.42 | 35.40 | 39.68 | 42.80 | 49.39 | 44.13 | 40.80 | 26.42 | 28.00 | 23.55 | 34.97 | |||||||||||||
1926 | 24.71 | 32.71 | 26.35 | 37.23 | 36.84 | 41.10 | 45.10 | 42.87 | 32.90 | 35.06 | 33.67 | 28.83 | a | 34.78 | ||||||||||||
1927 | 30.94 | 30.43 | 30.90 | 36.87 | 40.26 | 45.57 | 45.33 | a | 41.48 | 36.07 | 32.16 | 35.00 | 25.13 | 35.84 | ||||||||||||
1928 | 29.30 | a | 26.97 | 32.32 | 33.30 | 36.84 | 38.70 | 44.39 | 40.61 | 35.27 | 31.48 | 29.97 | a | 23.39 | 33.54 | |||||||||||
1929 | 22.55 | 20.64 | 28.52 | 28.52 | a | 34.65 | 42.27 | 43.90 | 42.29 | 33.07 | 30.13 | 15.11 | c | 30.65 | 31.02 | |||||||||||
1930 | 22.74 | 29.61 | 28.48 | 32.77 | 32.65 | 37.77 | 44.48 | 42.26 | 40.37 | 32.90 | 26.30 | 21.90 | 32.69 | |||||||||||||
1931 | 28.94 | 30.57 | 30.74 | 31.33 | 38.77 | 43.30 | 45.16 | 41.35 | 36.67 | 30.03 | ----- | z | ----- | z | 35.69 | b | ||||||||||
1932 | 25.68 | 25.41 | 33.42 | 34.10 | 40.77 | 46.47 | 45.19 | ----- | z | 35.63 | 27.61 | 29.17 | 22.29 | 33.25 | a | |||||||||||
1933 | 21.68 | 17.11 | 30.48 | 28.50 | 34.33 | a | 39.93 | 45.35 | 43.40 | a | 38.30 | 32.81 | 24.33 | 28.58 | 32.07 | |||||||||||
1934 | 31.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.32 | k | |
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 | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 27.67 | j | ----- | z |
1976 | 21.95 | k | 22.16 | j | ----- | 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 | 30.45 | j | ----- | z | ----- | z |
1980 | 26.82 | i | ----- | z | ----- | z | ----- | z | 35.96 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.96 | k |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.25 | b | ----- | z | ----- | z | ----- | z | 42.25 | k |
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 | 34.52 | 34.52 | k | |
1996 | 29.71 | 33.00 | 30.94 | 33.73 | 35.77 | 42.57 | 49.65 | 42.65 | 37.07 | a | 33.00 | 32.33 | 31.26 | 35.97 | ||||||||||||
1997 | 28.58 | 27.57 | 30.16 | 33.40 | 39.65 | 41.57 | 47.03 | 46.94 | 41.27 | 33.61 | 37.67 | 25.53 | a | 36.08 | ||||||||||||
1998 | 34.26 | 32.14 | 32.94 | 33.23 | 39.32 | 44.73 | 47.84 | 44.40 | a | 43.73 | 31.45 | 34.83 | 24.16 | 36.92 | ||||||||||||
1999 | 26.48 | 29.61 | 31.32 | 30.40 | 35.90 | 39.73 | 41.29 | 46.06 | 38.27 | 32.32 | 36.80 | 25.60 | a | 34.48 | ||||||||||||
2000 | 32.19 | 34.76 | 31.68 | 35.43 | 40.23 | 42.87 | 44.87 | 42.06 | 39.73 | 34.84 | 28.58 | d | 27.48 | b | 36.23 | |||||||||||
2001 | 23.63 | a | 26.71 | 33.33 | a | 31.21 | a | 37.90 | 40.37 | 46.94 | 44.74 | 39.77 | 35.43 | a | 36.21 | a | 32.13 | a | 35.70 | |||||||
2002 | 28.58 | 29.50 | 28.35 | 35.97 | 36.77 | 41.17 | 47.90 | 41.71 | 37.69 | a | 26.61 | 29.35 | j | 32.37 | a | 35.15 | a | |||||||||
2003 | 36.84 | 29.50 | 33.45 | 34.53 | 40.13 | 42.03 | 48.39 | 47.71 | 40.00 | 32.13 | 32.11 | b | 33.43 | a | 37.52 | |||||||||||
2004 | 29.97 | a | 31.41 | 32.97 | a | 33.17 | 38.97 | 40.32 | k | 48.04 | f | 46.48 | 36.70 | c | 36.42 | 30.60 | e | 27.80 | a | 34.45 | b | |||||
2005 | 29.65 | 29.50 | 33.37 | a | 33.62 | i | 41.48 | h | 42.96 | e | 46.60 | f | 44.14 | c | 32.46 | q | 33.17 | g | 31.28 | e | 27.06 | n | 35.15 | f | ||
2006 | 30.75 | c | 24.96 | e | 27.22 | m | 34.67 | r | ----- | z | ----- | z | 51.04 | g | 44.26 | 37.90 | a | 36.50 | s | ----- | z | ----- | z | 34.47 | h | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 26.75 | 27.87 | 29.73 | 32.40 | 36.65 | 40.97 | 44.81 | 43.25 | 37.81 | 31.79 | 29.66 | 27.59 | 34.15 | |||||||||||||
S.D. | 4.69 | 4.12 | 3.09 | 3.04 | 2.95 | 2.50 | 2.50 | 1.98 | 2.84 | 3.12 | 4.89 | 3.64 | 2.02 | |||||||||||||
SKEW | -0.12 | -0.80 | -0.75 | -0.13 | -0.21 | -0.12 | 0.16 | 0.46 | -0.01 | -0.52 | -0.77 | 0.19 | 0.04 | |||||||||||||
MAX | 36.84 | 34.76 | 33.45 | 37.80 | 40.94 | 46.47 | 49.65 | 47.71 | 43.73 | 36.42 | 37.67 | 34.52 | 37.52 | |||||||||||||
MIN | 16.47 | 17.11 | 21.77 | 27.33 | 30.90 | 34.17 | 40.07 | 39.90 | 32.40 | 24.74 | 15.11 | 21.90 | 31.02 | |||||||||||||
YRS | 31 | 30 | 29 | 29 | 29 | 29 | 27 | 28 | 30 | 28 | 28 | 26 | 19 |