YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.97 | b | 27.97 | k |
1907 | 16.27 | a | 31.04 | 30.97 | ----- | z | 40.23 | 38.40 | 48.50 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.38 | g | ||||
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | 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 | ----- | 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 | 56.93 | p | 51.00 | 43.90 | a | 37.07 | a | 26.77 | 26.17 | a | 36.98 | g | ||
1932 | 24.53 | a | 24.00 | 32.97 | 33.41 | a | 40.29 | 45.83 | 47.29 | 48.23 | 42.47 | 38.32 | 34.66 | a | 16.42 | 35.70 | ||||||||||
1933 | 24.32 | 22.25 | d | 30.23 | a | 33.43 | 36.10 | 46.60 | 51.16 | 50.87 | 42.23 | 39.84 | 30.47 | 33.77 | a | 36.77 | ||||||||||
1934 | 31.90 | 31.71 | 35.74 | 41.50 | 44.71 | 46.17 | a | 51.16 | 52.48 | 44.30 | 40.71 | 37.20 | 28.97 | 40.55 | ||||||||||||
1935 | 26.83 | a | 28.54 | 28.13 | 32.90 | 37.16 | 46.93 | 50.81 | ----- | z | 46.57 | 36.19 | 25.46 | b | 23.20 | a | 34.79 | a | ||||||||
1936 | 27.43 | a | 18.62 | 28.55 | 38.30 | 43.74 | 49.43 | 52.39 | 50.45 | 42.87 | 39.32 | 24.93 | 29.42 | 37.12 | ||||||||||||
1937 | 5.83 | a | 27.43 | 31.94 | 34.60 | 38.87 | a | 46.07 | 49.81 | 48.77 | 44.93 | 44.55 | 32.10 | 28.87 | a | 36.15 | ||||||||||
1938 | 26.52 | 27.32 | 30.71 | 35.40 | 38.77 | 45.73 | 53.45 | 47.55 | 47.27 | 37.68 | 27.13 | 26.00 | a | 36.96 | ||||||||||||
1939 | 28.68 | 25.07 | 31.00 | 34.60 | 41.32 | 44.17 | 52.10 | 46.87 | 43.57 | 37.00 | 28.77 | 29.48 | 36.89 | |||||||||||||
1940 | 22.67 | a | 32.34 | 31.84 | 33.97 | 37.29 | 48.67 | 51.94 | 52.87 | 47.70 | 40.74 | 28.97 | 28.55 | b | 38.13 | |||||||||||
1941 | 27.65 | 38.11 | 33.16 | 38.53 | 42.13 | 46.70 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.71 | f | ||||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.33 | 30.00 | 30.17 | j | ||
1943 | 18.94 | 28.07 | 29.42 | 35.53 | 36.65 | 46.53 | 50.07 | a | 46.74 | 45.13 | 39.65 | 30.80 | 23.55 | 35.92 | ||||||||||||
1944 | 22.90 | a | 26.97 | 28.45 | 34.77 | 39.03 | 44.30 | 48.48 | 50.67 | a | 44.17 | 38.61 | 30.03 | a | 20.73 | a | 35.76 | |||||||||
1945 | 25.87 | 26.15 | b | 27.10 | 31.57 | 40.35 | 43.33 | 52.65 | 49.39 | 41.03 | 36.40 | a | 29.83 | 25.29 | 35.75 | |||||||||||
1946 | 24.94 | 26.37 | a | 29.77 | 33.63 | 37.81 | ----- | z | ----- | z | 45.39 | 41.37 | 31.55 | 26.20 | 27.10 | a | 32.41 | b | ||||||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | 32.08 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | 47.26 | 44.10 | 49.52 | b | 51.30 | a | 45.50 | 35.61 | 32.90 | 30.90 | a | 42.14 | d | |||||
1950 | 20.42 | 25.32 | 31.84 | 33.83 | 39.35 | ----- | z | 45.45 | 39.26 | 38.80 | 31.45 | 32.25 | n | 34.04 | f | 33.97 | c | |||||||||
1951 | 24.60 | a | 26.78 | a | 29.48 | 30.10 | a | 34.39 | 47.04 | d | 49.04 | e | 43.23 | e | 41.30 | 32.87 | 23.87 | 21.23 | 33.66 | |||||||
1952 | 27.67 | a | 24.92 | e | 32.94 | o | 38.64 | s | ----- | z | ----- | z | 54.83 | a | 49.90 | 43.64 | s | ----- | z | 11.33 | x | 27.13 | 36.89 | g | ||
1953 | 36.57 | a | 32.36 | 31.10 | 33.00 | 38.65 | 42.03 | 49.10 | 51.13 | 47.31 | a | 37.39 | 37.66 | a | 31.57 | a | 38.99 | |||||||||
1954 | 26.10 | 30.36 | 24.71 | 33.60 | 38.87 | 41.53 | 48.87 | 47.84 | 43.43 | 34.10 | 34.55 | a | 25.00 | 35.75 | ||||||||||||
1955 | 23.13 | 23.86 | 24.42 | 30.93 | 35.52 | 44.83 | a | 47.44 | o | 45.14 | x | 42.30 | c | 38.00 | 27.14 | a | 26.06 | 31.62 | b | |||||||
1956 | 27.61 | 21.28 | 29.16 | 35.60 | 43.83 | a | 44.70 | 49.46 | r | ----- | z | 45.33 | l | 36.94 | 25.80 | 27.65 | 32.51 | c | ||||||||
1957 | 10.07 | a | 27.75 | 32.63 | a | 36.50 | 44.74 | 49.52 | a | 49.71 | 46.97 | a | 45.32 | b | 34.93 | b | 24.69 | a | 27.45 | 35.86 | ||||||
1958 | 25.71 | 34.21 | 25.55 | 31.93 | 43.52 | 50.87 | 54.42 | 54.48 | 43.43 | 36.94 | 28.03 | 28.35 | 38.12 | |||||||||||||
1959 | 25.70 | a | 24.71 | 27.45 | 31.97 | 34.67 | a | 43.93 | 48.39 | 47.32 | 46.00 | 38.52 | 25.67 | 24.42 | 34.90 | |||||||||||
1960 | 19.42 | 24.76 | 30.39 | 35.13 | 39.23 | 46.37 | 54.19 | 48.16 | 44.77 | 37.74 | 29.00 | b | 23.90 | 36.09 | ||||||||||||
1961 | 26.52 | 32.57 | 32.03 | a | 32.53 | 39.84 | 50.03 | 52.93 | a | 54.00 | 37.70 | 33.19 | 23.10 | 23.42 | 36.49 | |||||||||||
1962 | 16.97 | 25.07 | 27.29 | 34.33 | 35.71 | 40.50 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.98 | f | |||||
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 | 46.25 | v | 48.61 | 49.33 | a | 39.33 | 37.93 | a | 32.40 | 19.17 | h | 41.52 | g | |||
1966 | 28.11 | m | 25.70 | a | 28.54 | g | 32.47 | o | 36.58 | s | 44.50 | v | 43.45 | ----- | z | 41.48 | a | 33.26 | 35.06 | l | 31.31 | b | 35.04 | g | ||
1967 | 31.62 | b | 27.78 | e | 29.50 | c | 31.00 | b | 39.81 | d | 47.75 | b | 52.75 | g | 54.48 | b | 48.34 | a | 35.48 | b | 28.76 | i | 22.12 | g | 38.42 | c |
1968 | 21.32 | f | 31.16 | d | 30.92 | f | 32.24 | e | 38.48 | 47.85 | c | 53.23 | a | 50.39 | 44.46 | d | 36.62 | e | 31.96 | d | 22.65 | n | 40.71 | c | ||
1969 | 14.93 | q | ----- | z | 27.14 | j | 32.69 | a | 41.47 | a | 49.90 | 48.97 | 45.58 | 42.00 | 29.97 | a | 26.90 | 26.26 | 38.19 | c | ||||||
1970 | 25.84 | 29.41 | a | 28.45 | 30.07 | 38.52 | 50.77 | 52.19 | 49.29 | 39.43 | 33.10 | 30.97 | 25.13 | 36.10 | ||||||||||||
1971 | 28.48 | b | 26.86 | 29.42 | 32.52 | a | 41.32 | 43.82 | b | 51.77 | 53.30 | a | 37.50 | 30.32 | 30.87 | 26.87 | 36.09 | |||||||||
1972 | 24.77 | 28.66 | 33.77 | 32.77 | 42.42 | 48.37 | 53.07 | a | 52.55 | 40.77 | 35.46 | c | 31.59 | a | 19.35 | 36.96 | ||||||||||
1973 | 23.67 | a | 30.71 | 31.19 | 32.70 | 42.00 | 46.83 | 49.19 | 47.67 | a | 42.83 | 34.25 | g | 33.31 | a | 32.32 | 37.49 | a | ||||||||
1974 | 20.58 | 28.89 | j | 28.37 | a | 33.07 | b | 37.42 | 47.03 | 48.97 | 48.55 | 40.67 | 30.61 | 28.77 | 25.94 | 35.45 | a | |||||||||
1975 | 26.20 | a | 23.11 | 24.84 | 28.13 | 36.03 | 37.87 | 51.23 | 45.29 | 42.00 | 37.65 | 28.23 | d | 26.87 | 33.95 | |||||||||||
1976 | 24.07 | a | 22.96 | a | 27.41 | b | 31.83 | 36.81 | 41.03 | a | 47.23 | 47.52 | 43.31 | a | 32.48 | 30.79 | a | 22.35 | 33.98 | |||||||
1977 | 17.06 | 26.93 | 28.61 | 35.90 | a | 36.84 | 47.47 | 49.26 | 54.55 | 41.23 | 33.87 | 25.73 | 28.77 | 35.52 | ||||||||||||
1978 | 26.42 | 29.39 | 32.13 | 33.60 | 34.52 | 45.70 | 51.55 | 50.10 | 42.90 | 33.39 | 20.60 | 19.23 | 34.96 | |||||||||||||
1979 | 7.52 | 27.50 | 32.03 | a | 34.87 | 39.26 | 43.28 | a | 49.13 | a | 49.45 | 44.53 | 39.10 | 23.53 | 29.55 | 34.98 | ||||||||||
1980 | 19.42 | 29.54 | a | 30.42 | 34.60 | 40.20 | a | 42.83 | 49.93 | b | 45.13 | 43.97 | 36.48 | 32.97 | 29.13 | 36.22 | ||||||||||
1981 | 27.35 | 26.39 | 30.60 | a | 33.47 | 41.40 | a | 47.03 | 50.52 | 53.70 | a | 46.57 | 35.32 | 31.97 | 28.77 | 37.76 | ||||||||||
1982 | 22.81 | 26.56 | a | 28.83 | a | 30.38 | a | 37.63 | a | 51.50 | b | 52.77 | 53.03 | 43.81 | c | 35.27 | a | 27.34 | a | 25.23 | a | 36.26 | ||||
1983 | 30.45 | b | 32.26 | a | 36.03 | 33.13 | 42.90 | 47.28 | a | 49.74 | 54.06 | 42.21 | a | 36.30 | a | 35.97 | 16.23 | a | 38.05 | |||||||
1984 | 23.07 | a | 28.68 | a | 33.97 | 33.37 | 38.48 | b | 44.69 | a | 53.19 | 48.58 | 42.00 | a | 34.53 | a | 29.46 | b | 20.71 | 35.89 | ||||||
1985 | 18.94 | 21.93 | 28.32 | 37.04 | d | 39.16 | 49.38 | a | 57.55 | 48.97 | 40.64 | e | 34.35 | 17.45 | a | 16.00 | 34.14 | |||||||||
1986 | 29.57 | a | 32.29 | 34.52 | 31.38 | a | 41.40 | a | 51.90 | 48.90 | 56.45 | b | 41.97 | 36.03 | 31.50 | d | 26.65 | 38.55 | ||||||||
1987 | 23.23 | a | 28.22 | a | 30.83 | b | 36.61 | b | 44.55 | 51.00 | a | 51.29 | ----- | z | 47.03 | 38.03 | b | 29.55 | a | 24.79 | b | 36.83 | a | |||
1988 | 23.20 | a | 25.07 | 29.07 | c | 35.26 | c | 39.34 | b | 47.63 | c | 54.10 | 49.83 | b | 44.28 | e | 43.68 | 33.21 | a | 24.27 | a | 37.41 | ||||
1989 | 26.27 | a | 13.77 | b | 30.26 | d | 37.82 | b | 39.96 | c | 46.81 | d | 51.45 | b | 50.13 | a | 43.29 | b | 36.60 | a | 31.03 | 21.52 | 35.74 | |||
1990 | 27.53 | a | 24.37 | a | 29.83 | a | 36.10 | a | 39.00 | 46.64 | b | 54.22 | d | 54.03 | a | 47.70 | 37.30 | d | 32.03 | 13.30 | a | 36.84 | ||||
1991 | 22.32 | 31.96 | c | 29.72 | b | 32.17 | f | 38.24 | b | 40.21 | a | 48.74 | d | 55.55 | b | 46.24 | e | 37.10 | a | 37.30 | c | 25.58 | 37.54 | a | ||
1992 | 29.00 | d | 29.61 | a | 31.97 | 36.21 | a | 40.11 | d | 50.71 | b | 52.44 | d | 52.10 | b | 41.79 | a | 37.00 | b | 28.14 | b | 24.40 | a | 37.79 | ||
1993 | 15.21 | b | 19.68 | c | 31.52 | d | 33.12 | f | 43.12 | f | 43.05 | h | 46.77 | e | 49.26 | d | 43.24 | e | 38.41 | b | 20.08 | d | 26.32 | f | 33.02 | d |
1994 | 27.69 | e | 23.91 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.69 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.85 | 27.19 | 30.15 | 33.89 | 39.58 | 46.15 | 50.73 | 49.88 | 43.31 | 36.31 | 29.24 | 25.53 | 36.39 | |||||||||||||
S.D. | 5.70 | 4.19 | 2.57 | 2.44 | 2.84 | 3.30 | 2.59 | 3.37 | 2.54 | 3.02 | 4.29 | 4.34 | 1.46 | |||||||||||||
SKEW | -1.10 | -0.38 | -0.06 | 0.48 | 0.38 | -0.46 | -0.12 | -0.44 | -0.09 | 0.13 | -0.35 | -0.75 | 0.45 | |||||||||||||
MAX | 36.57 | 38.11 | 36.03 | 41.50 | 47.26 | 51.90 | 57.55 | 56.45 | 48.34 | 44.55 | 37.66 | 33.77 | 40.55 | |||||||||||||
MIN | 5.83 | 13.77 | 24.42 | 28.13 | 34.39 | 37.87 | 43.45 | 39.26 | 37.50 | 29.97 | 17.45 | 13.30 | 33.66 | |||||||||||||
YRS | 54 | 54 | 52 | 51 | 54 | 52 | 51 | 51 | 54 | 54 | 53 | 53 | 38 |