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 | 26.36 | 29.00 | 34.73 | 36.55 | 39.20 | 46.35 | 43.16 | 36.40 | 35.03 | 25.70 | 13.52 | 33.27 | a | |||||||||||
1915 | 21.65 | 28.71 | 29.32 | 33.73 | 38.41 | d | 36.79 | a | 44.13 | 46.03 | b | 34.57 | 31.61 | 27.47 | 24.32 | 33.06 | ||||||||||
1916 | 20.13 | a | 28.55 | 31.39 | 33.57 | 31.16 | 38.73 | 40.97 | 40.68 | 36.17 | 24.78 | d | 20.30 | 19.61 | 30.50 | |||||||||||
1917 | 12.55 | 22.50 | 20.35 | 32.07 | 34.42 | 38.13 | 46.77 | 43.81 | 41.20 | 27.61 | 29.54 | b | 33.71 | 31.89 | ||||||||||||
1918 | 26.45 | 23.61 | 29.06 | 24.77 | 30.94 | 43.90 | 46.97 | 40.06 | 41.20 | 32.45 | 25.17 | 19.68 | 32.02 | |||||||||||||
1919 | 18.94 | 25.04 | 26.42 | 32.43 | 37.17 | a | 41.03 | 46.10 | 47.35 | 41.23 | 25.00 | 23.60 | 14.90 | 31.60 | ||||||||||||
1920 | 22.06 | 16.38 | 26.84 | 28.62 | a | 31.94 | 40.23 | 45.35 | 44.29 | 43.20 | 34.84 | 27.67 | 26.74 | 32.35 | ||||||||||||
1921 | 22.10 | 26.43 | 32.35 | 31.87 | 35.97 | 43.20 | 41.68 | 45.87 | 33.23 | 32.74 | 30.03 | 23.23 | 33.22 | |||||||||||||
1922 | 10.00 | 20.14 | 24.35 | 27.13 | 36.16 | 43.53 | 48.00 | 47.32 | 40.60 | 34.10 | 22.83 | 26.45 | 31.72 | |||||||||||||
1923 | 25.26 | 19.50 | 24.10 | 35.10 | 37.13 | 39.40 | 45.65 | 44.90 | 39.53 | 30.68 | 22.53 | 18.87 | a | 31.89 | ||||||||||||
1924 | 18.39 | 29.59 | 23.16 | 28.23 | 35.90 | 38.10 | 45.52 | 40.52 | 40.27 | 32.32 | 25.33 | 14.23 | 30.96 | |||||||||||||
1925 | 28.77 | 29.46 | 28.33 | a | 34.23 | 39.16 | 41.70 | 48.61 | 46.94 | 39.43 | 30.32 | 28.70 | 23.20 | a | 34.91 | |||||||||||
1926 | 19.26 | 31.89 | 25.13 | 37.03 | 35.55 | 42.83 | 45.35 | ----- | z | 31.63 | 36.94 | 34.13 | 23.77 | 33.05 | a | |||||||||||
1927 | 26.77 | 27.86 | 29.03 | 30.13 | 35.42 | 43.07 | 45.32 | 44.52 | 39.20 | 34.61 | 34.77 | 16.61 | 33.94 | |||||||||||||
1928 | 28.30 | a | 23.97 | 31.90 | 30.17 | 37.45 | 39.97 | 45.97 | 41.84 | 39.13 | 29.71 | 27.60 | 16.06 | 32.67 | ||||||||||||
1929 | 16.57 | a | 18.36 | 29.10 | 29.17 | 34.23 | 40.87 | 45.29 | 47.58 | 30.30 | 29.16 | 16.20 | 27.74 | 30.38 | ||||||||||||
1930 | 9.45 | 33.61 | 27.47 | a | 35.70 | 36.39 | 38.23 | 45.06 | 45.84 | 37.23 | 30.61 | 20.20 | 15.84 | 31.30 | ||||||||||||
1931 | 23.74 | 21.54 | 28.35 | 28.67 | 41.45 | 41.40 | 47.10 | 46.29 | 38.63 | 26.10 | 21.30 | 22.26 | 32.24 | |||||||||||||
1932 | 20.90 | 18.97 | 29.94 | 30.50 | 35.03 | a | 40.87 | 41.52 | 39.10 | 32.83 | 29.00 | a | 31.45 | a | 10.39 | 30.04 | ||||||||||
1933 | 18.32 | 15.04 | a | 27.65 | 26.67 | 32.32 | 40.53 | 44.38 | b | 42.52 | 36.90 | 30.33 | a | 21.40 | 31.68 | 30.64 | ||||||||||
1934 | 27.71 | 27.86 | 31.61 | 31.37 | 38.70 | a | 39.30 | 45.00 | 44.45 | 33.73 | 34.93 | a | 32.63 | 22.77 | 34.17 | |||||||||||
1935 | 23.81 | 25.04 | 23.68 | 31.40 | 30.19 | 39.73 | 43.87 | 40.55 | 35.93 | 27.13 | 19.67 | 19.10 | 30.01 | |||||||||||||
1936 | 24.35 | 26.69 | 24.74 | 34.33 | 36.45 | 44.28 | a | 44.97 | 45.48 | 33.40 | 26.10 | 13.20 | 20.45 | 31.20 | ||||||||||||
1937 | 0.29 | c | 21.96 | 28.84 | 30.57 | 34.77 | 41.97 | 44.81 | 38.81 | 36.37 | 33.97 | 31.27 | 25.68 | 30.77 | ||||||||||||
1938 | 21.29 | 22.57 | 26.61 | 31.40 | 33.84 | 39.77 | 47.72 | b | 42.03 | 38.23 | 34.74 | 21.00 | 20.94 | 31.68 | ||||||||||||
1939 | 22.58 | 19.29 | 25.16 | 31.40 | 35.29 | 37.57 | 46.84 | 43.81 | 36.70 | 30.19 | 19.30 | 28.63 | a | 31.40 | ||||||||||||
1940 | 24.71 | 28.97 | 28.16 | 32.17 | 36.32 | 40.10 | 43.16 | 42.42 | 40.34 | a | 35.97 | b | 24.50 | 22.55 | 33.28 | |||||||||||
1941 | 24.10 | 28.32 | 25.23 | 27.83 | 36.29 | 40.80 | 45.52 | 44.13 | a | 34.37 | 30.68 | 28.63 | 26.03 | a | 32.66 | |||||||||||
1942 | 17.42 | 23.64 | 25.94 | 31.63 | 35.77 | 39.59 | a | 46.74 | 42.84 | 34.83 | 31.97 | 29.40 | 25.23 | 32.08 | ||||||||||||
1943 | 17.81 | 23.61 | 27.06 | 33.83 | 31.26 | 36.07 | 43.19 | 39.71 | 37.33 | 33.26 | 24.87 | 16.52 | 30.38 | |||||||||||||
1944 | 16.65 | 24.10 | 23.29 | 29.10 | 31.68 | 39.47 | 42.03 | 39.45 | 34.43 | 32.29 | 24.37 | 20.97 | 29.82 | |||||||||||||
1945 | 23.10 | 25.68 | 26.23 | 25.63 | 37.16 | 40.40 | 44.26 | 42.10 | 31.90 | 32.87 | 29.67 | 21.71 | 31.72 | |||||||||||||
1946 | 19.03 | 22.93 | 28.81 | 29.67 | 32.52 | 39.60 | 44.00 | a | 41.97 | 35.17 | 27.32 | 24.27 | 25.00 | 30.86 | ||||||||||||
1947 | 14.84 | 24.86 | 26.52 | 29.45 | a | 38.45 | 39.37 | 44.45 | 40.81 | 33.63 | 38.03 | 25.77 | 25.10 | 31.77 | ||||||||||||
1948 | 18.39 | 19.90 | 24.45 | 29.57 | 36.09 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.97 | 15.16 | 22.07 | f | ||||||
1949 | -3.71 | 20.35 | b | 29.10 | a | 29.57 | 38.10 | 37.37 | 42.43 | c | 43.23 | a | 36.97 | a | 21.40 | a | 25.55 | a | 19.79 | c | 28.34 | |||||
1950 | 17.67 | a | 24.21 | 26.84 | 27.39 | b | 31.10 | a | 40.22 | c | 43.19 | d | 43.36 | c | 37.88 | e | 35.23 | e | 33.00 | g | 31.42 | e | 32.59 | a | ||
1951 | 20.03 | b | 24.61 | 19.87 | 28.72 | a | 35.52 | 37.43 | p | 43.88 | e | 39.30 | a | 35.97 | 31.55 | 25.30 | 13.00 | b | 28.89 | a | ||||||
1952 | 11.75 | k | ----- | z | ----- | z | ----- | z | ----- | z | 40.04 | g | 49.62 | j | 41.87 | a | 39.14 | a | 28.26 | 15.03 | a | 22.84 | 29.43 | g | ||
1953 | 32.10 | 23.14 | 23.77 | 27.57 | 32.52 | 36.20 | 41.10 | a | 43.27 | e | 35.07 | 27.13 | 31.10 | 20.13 | 31.09 | |||||||||||
1954 | 20.97 | 21.43 | 18.17 | a | 24.77 | 29.87 | 35.13 | 40.77 | a | 34.58 | 25.83 | 24.97 | 21.67 | 19.26 | 26.45 | |||||||||||
1955 | 12.55 | 18.21 | 22.69 | b | 25.27 | d | 33.30 | a | 40.57 | b | 43.77 | 39.23 | 33.37 | 31.45 | 22.93 | 25.61 | 29.08 | |||||||||
1956 | 25.65 | 15.59 | 24.90 | 29.30 | 38.23 | a | 38.47 | 45.03 | ----- | z | 33.77 | q | 29.05 | j | 18.70 | 17.10 | 28.11 | c | ||||||||
1957 | 10.97 | 24.21 | 29.87 | 29.41 | a | 37.94 | 39.03 | 39.74 | 37.19 | 38.70 | 33.06 | 20.70 | 26.65 | 30.62 | ||||||||||||
1958 | 26.71 | 32.61 | 24.03 | a | 31.93 | 38.06 | 44.73 | 46.19 | 46.27 | a | 36.50 | 31.06 | 28.60 | 29.10 | 34.65 | |||||||||||
1959 | 27.43 | a | 24.18 | 23.81 | 29.67 | 33.35 | 42.10 | 44.77 | 40.13 | 38.24 | a | 30.10 | 19.10 | 13.19 | 30.51 | |||||||||||
1960 | 18.13 | 22.34 | 26.35 | 29.97 | 34.35 | 37.97 | 46.81 | 40.39 | 35.60 | 31.13 | 25.77 | 22.61 | 30.95 | |||||||||||||
1961 | 19.35 | 29.57 | 28.71 | 27.50 | 34.96 | d | 44.24 | a | 43.42 | 47.94 | 31.60 | 29.00 | 20.21 | b | 23.00 | a | 31.63 | |||||||||
1962 | 9.70 | a | 22.57 | 24.42 | 31.57 | 35.84 | 37.47 | 41.39 | 43.10 | a | 37.87 | 31.13 | 29.70 | 25.68 | 30.87 | |||||||||||
1963 | 12.06 | 31.29 | 25.87 | 30.40 | 38.84 | 40.53 | 41.03 | 40.58 | 41.97 | 34.06 | 31.13 | 25.10 | 32.74 | |||||||||||||
1964 | 22.48 | 17.90 | 21.84 | 26.10 | 32.16 | 42.33 | 45.94 | 43.26 | 33.53 | 30.87 | 25.87 | 27.06 | 30.78 | |||||||||||||
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 | ----- | 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 | 28.88 | e | 21.48 | b | 25.18 | j |
1984 | 19.06 | 20.24 | 28.97 | b | 28.28 | a | 36.50 | a | 38.43 | 45.80 | a | 46.00 | 35.43 | b | 30.97 | a | ----- | z | ----- | z | 32.97 | b | ||||
1985 | ----- | z | 14.59 | k | 17.95 | k | 30.46 | d | 33.85 | d | 43.77 | h | 54.93 | c | 42.27 | p | 35.55 | h | 32.10 | j | 16.80 | e | 19.73 | e | 31.15 | g |
1986 | 27.59 | d | 27.32 | c | 34.96 | f | 27.31 | d | 38.67 | j | 50.73 | d | 48.67 | d | 50.41 | b | 38.42 | d | 35.11 | d | 26.36 | e | 21.84 | f | 36.88 | c |
1987 | 21.58 | g | 31.48 | c | 32.82 | i | 35.74 | g | 43.87 | h | 44.67 | f | 43.64 | c | 42.24 | b | 39.62 | f | 40.10 | 31.00 | b | 22.04 | g | 37.69 | g | |
1988 | 27.12 | e | ----- | z | 27.21 | b | 37.43 | 43.29 | g | 49.23 | d | 50.66 | b | 48.44 | d | 38.55 | a | 38.13 | a | 33.11 | c | 21.41 | i | 38.88 | c | |
1989 | 20.35 | k | 20.63 | i | 34.53 | n | 38.48 | e | 38.96 | d | ----- | z | 49.04 | c | 42.90 | a | 40.45 | a | 31.36 | c | 24.07 | c | 19.83 | h | 37.89 | e |
1990 | 28.67 | g | 20.50 | d | 28.29 | c | 38.21 | b | ----- | z | 44.93 | c | 53.69 | e | 48.73 | e | 44.84 | e | 37.26 | d | 28.25 | f | 13.33 | j | 39.56 | d |
1991 | 18.20 | u | 34.88 | c | 32.37 | d | 33.85 | d | 38.97 | b | 42.52 | a | 48.32 | 54.90 | 42.77 | 38.78 | d | 35.37 | c | 18.24 | f | 40.27 | b | |||
1992 | ----- | z | 31.84 | d | 40.79 | b | 33.71 | b | 44.60 | a | 49.20 | 48.68 | 46.43 | a | 39.25 | b | ----- | z | 35.14 | a | 21.19 | e | 39.08 | b | ||
1993 | 18.69 | b | 25.46 | 29.85 | e | 33.52 | c | 40.93 | c | 39.45 | a | 41.45 | b | 47.94 | 42.64 | b | 36.00 | b | 17.70 | j | 19.86 | c | 34.16 | a | ||
1994 | 23.87 | a | 19.60 | r | 25.57 | c | 34.07 | b | 40.86 | c | 42.74 | c | 52.24 | b | 46.53 | a | 43.13 | 33.35 | 20.96 | c | 21.08 | e | 34.95 | a | ||
1995 | 31.59 | b | 32.26 | e | 34.89 | d | 33.17 | f | 44.86 | b | 45.07 | b | 50.71 | 48.62 | b | 43.13 | 37.03 | 38.13 | 31.55 | 39.80 | a | |||||
1996 | 29.00 | a | 24.00 | a | 36.28 | b | 38.50 | b | 35.17 | a | 44.20 | 53.61 | 48.00 | 38.96 | c | 40.13 | ----- | z | 25.28 | m | 38.78 | b | ||||
1997 | ----- | z | 21.11 | s | 25.66 | b | 25.40 | j | 39.69 | b | 40.39 | b | 45.30 | a | 46.52 | 37.90 | 27.27 | a | 29.72 | a | 18.35 | e | 34.53 | c | ||
1998 | 27.77 | 26.32 | 27.26 | 30.40 | 36.20 | a | 41.73 | 48.16 | 43.10 | 41.52 | c | 27.13 | 29.12 | d | 16.53 | a | 32.94 | |||||||||
1999 | ----- | z | 25.50 | x | 23.24 | b | 27.38 | a | 31.67 | d | 39.57 | 41.77 | a | 44.40 | f | 34.21 | p | 28.52 | d | 30.76 | a | 18.74 | d | 30.20 | d | |
2000 | 24.93 | d | 27.24 | l | 25.45 | b | 31.72 | e | 36.33 | d | 40.33 | 44.68 | c | 44.38 | e | 36.92 | d | 29.54 | g | 18.21 | f | 21.26 | d | 34.00 | c | |
2001 | 18.17 | g | 20.05 | i | 27.63 | d | 28.27 | h | 36.48 | b | 37.64 | b | 43.63 | a | 47.13 | a | 38.57 | b | 31.67 | d | 26.86 | b | 24.81 | d | 34.94 | c |
2002 | 20.00 | h | 22.14 | f | 22.88 | w | 26.93 | c | 29.68 | ----- | z | ----- | z | ----- | z | 35.76 | a | 22.42 | 24.48 | a | 24.35 | e | 27.27 | f | ||
2003 | 28.86 | c | 22.80 | c | 31.43 | c | 29.56 | e | 36.81 | 42.14 | i | 46.40 | k | 58.73 | t | 49.38 | i | 42.38 | o | ----- | z | ----- | z | 29.89 | g | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.61 | 24.63 | 27.15 | 30.80 | 35.80 | 40.83 | 45.48 | 43.80 | 37.32 | 31.58 | 25.87 | 21.89 | 31.51 | |||||||||||||
S.D. | 6.96 | 4.64 | 3.77 | 3.33 | 3.24 | 3.05 | 3.17 | 3.51 | 3.58 | 4.09 | 5.28 | 4.99 | 1.58 | |||||||||||||
SKEW | -1.13 | 0.14 | 0.70 | 0.44 | 0.34 | 1.04 | 0.83 | 0.21 | -0.37 | -0.12 | -0.07 | 0.05 | -0.39 | |||||||||||||
MAX | 32.10 | 34.88 | 40.79 | 38.50 | 44.86 | 50.73 | 54.93 | 54.90 | 44.84 | 40.13 | 38.13 | 33.71 | 34.91 | |||||||||||||
MIN | -3.71 | 15.04 | 18.17 | 24.77 | 29.68 | 35.13 | 39.74 | 34.58 | 25.83 | 21.40 | 13.20 | 10.39 | 26.45 | |||||||||||||
YRS | 59 | 61 | 65 | 66 | 65 | 63 | 67 | 64 | 65 | 65 | 65 | 63 | 45 |