YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.93 | h | 49.95 | a | 42.18 | 29.12 | a | 40.42 | i | |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.08 | 46.85 | 32.50 | 22.77 | 41.30 | h | ||||
1912 | 24.23 | 29.97 | 38.39 | 44.22 | a | 54.56 | 64.10 | 69.52 | 68.74 | 55.13 | 47.08 | 36.70 | 18.39 | 45.92 | ||||||||||||
1913 | 15.23 | 27.82 | 36.16 | 49.37 | 59.18 | 65.02 | 70.13 | 72.24 | 58.65 | 45.90 | 40.05 | 22.40 | 46.85 | |||||||||||||
1914 | 23.87 | 27.09 | 39.23 | 49.67 | 57.44 | 63.83 | 71.23 | 69.50 | 62.12 | 49.32 | 39.12 | 22.77 | 47.93 | |||||||||||||
1915 | 20.89 | 32.02 | a | 39.37 | 52.53 | 54.26 | 62.57 | 70.58 | 68.71 | 59.98 | 49.23 | 35.83 | 27.60 | 47.80 | ||||||||||||
1916 | 22.82 | 27.86 | 41.44 | 48.97 | 54.06 | 64.37 | 71.45 | 66.77 | 59.53 | 47.29 | 32.55 | 21.47 | 46.55 | |||||||||||||
1917 | 16.69 | 26.45 | 32.32 | 43.00 | 50.55 | 63.58 | 73.34 | 67.81 | 61.37 | 48.11 | 41.78 | 33.44 | 46.54 | |||||||||||||
1918 | 21.32 | 25.77 | 42.79 | 45.07 | 56.03 | 69.87 | 69.66 | 68.52 | 60.23 | 50.77 | 33.58 | 23.29 | 47.24 | |||||||||||||
1919 | 18.56 | 26.80 | a | 37.34 | 49.75 | 58.65 | 66.10 | 73.58 | 70.29 | 62.72 | 43.89 | 34.23 | 18.39 | 46.69 | ||||||||||||
1920 | 21.72 | a | 30.55 | 35.02 | 41.38 | 57.16 | 63.53 | 70.37 | 66.72 | a | 57.38 | 46.89 | 36.16 | b | 25.05 | 45.99 | ||||||||||
1921 | 27.24 | 31.41 | 41.98 | 45.33 | a | 56.11 | 64.93 | 69.90 | 67.13 | 60.15 | 51.53 | 39.17 | 32.95 | 48.99 | ||||||||||||
1922 | 22.42 | 27.82 | 36.13 | 44.20 | 55.37 | 66.08 | 70.13 | 70.48 | 62.02 | 48.48 | 36.35 | 30.89 | 47.53 | |||||||||||||
1923 | 28.27 | 28.66 | 33.48 | 46.50 | 56.27 | 62.98 | 72.18 | 66.92 | 58.10 | 45.06 | 36.73 | 27.98 | 46.93 | |||||||||||||
1924 | 16.55 | 34.07 | 33.84 | 45.75 | 55.11 | 65.02 | 70.19 | 68.48 | 59.05 | 49.00 | a | 37.93 | 19.26 | 46.19 | ||||||||||||
1925 | 17.56 | 32.05 | 41.75 | a | 51.60 | 60.77 | 64.97 | a | 72.73 | 67.23 | 62.74 | a | 49.13 | 36.57 | a | 31.48 | 49.05 | |||||||||
1926 | 25.03 | 35.74 | a | 39.85 | a | 50.45 | 55.50 | a | 65.97 | 70.81 | 70.50 | 59.30 | 49.77 | i | 37.57 | ----- | z | 51.07 | b | |||||||
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 | 56.97 | 65.63 | 74.85 | a | 68.59 | b | ----- | z | ----- | z | ----- | z | ----- | z | 66.51 | h | ||
1930 | ----- | z | ----- | z | 38.97 | 52.50 | 53.52 | 64.30 | 72.90 | 70.58 | 59.30 | 50.10 | 32.93 | 19.11 | 51.42 | b | ||||||||||
1931 | 21.02 | 35.50 | 37.85 | 50.63 | 56.48 | a | 70.72 | 73.35 | 69.90 | 61.33 | ----- | z | 34.62 | a | 18.61 | 48.18 | a | |||||||||
1932 | 16.16 | 29.04 | a | 37.27 | 48.67 | 57.00 | 65.33 | 73.34 | 71.19 | 59.33 | 46.53 | 35.60 | 21.02 | 46.71 | ||||||||||||
1933 | 17.57 | a | 14.02 | a | 40.42 | 44.95 | 53.39 | 67.95 | 74.38 | a | 68.65 | 64.33 | 50.69 | 37.20 | 30.11 | 46.97 | ||||||||||
1934 | 29.06 | 39.41 | 43.50 | 51.02 | 63.58 | 64.53 | 75.02 | 73.82 | a | 59.05 | 50.53 | 42.37 | 27.52 | 51.62 | ||||||||||||
1935 | 26.76 | 35.52 | 38.13 | 49.13 | 54.33 | b | 67.87 | 73.38 | a | 70.61 | 61.28 | 47.24 | 35.32 | 25.87 | 48.79 | |||||||||||
1936 | 22.68 | 29.17 | 39.15 | 49.60 | 60.90 | a | 70.55 | 75.06 | 70.61 | 59.22 | 52.65 | 35.32 | 26.58 | 49.29 | ||||||||||||
1937 | 9.44 | 26.94 | a | 40.81 | b | 53.92 | 61.68 | a | 60.97 | 67.94 | 67.48 | 58.53 | 46.25 | a | ----- | z | 29.84 | 47.62 | a | |||||||
1938 | 27.11 | 33.18 | 39.69 | 48.58 | 55.02 | 66.30 | 69.74 | 68.94 | 61.30 | 50.30 | a | 30.82 | 26.19 | 48.10 | ||||||||||||
1939 | 25.27 | 17.88 | 38.62 | a | 50.58 | 58.42 | 63.89 | h | 70.98 | 70.32 | f | 63.25 | 49.37 | 40.52 | 32.47 | 44.74 | b | |||||||||
1940 | 26.44 | 33.74 | 42.42 | 49.62 | 60.08 | 68.17 | 72.85 | 70.03 | 62.43 | 51.19 | 35.32 | 28.42 | 50.06 | |||||||||||||
1941 | 26.76 | 35.39 | 39.89 | 46.37 | 58.06 | 61.85 | 69.68 | 68.63 | 57.92 | 50.75 | e | ----- | z | 31.25 | k | 51.53 | b | |||||||||
1942 | 21.07 | b | 22.45 | 34.90 | 49.70 | 54.28 | a | 63.71 | a | 70.24 | 68.19 | 59.33 | a | 49.92 | a | 39.93 | 30.39 | 47.01 | ||||||||
1943 | 27.32 | 32.93 | 38.77 | a | 53.58 | 54.19 | 62.25 | 71.56 | 68.82 | a | 61.93 | g | 50.55 | 37.68 | 30.37 | 48.00 | a | |||||||||
1944 | 19.39 | 31.34 | 37.11 | 44.20 | 56.61 | 61.93 | 68.26 | 67.65 | 61.17 | 53.16 | 39.20 | 28.02 | 47.34 | |||||||||||||
1945 | 29.26 | 35.88 | 38.37 | 43.32 | 56.83 | a | 59.45 | 70.39 | 69.97 | 58.97 | 51.39 | 36.22 | 23.53 | 47.80 | ||||||||||||
1946 | 22.52 | 28.96 | 43.02 | 51.87 | 55.13 | 65.68 | 72.92 | 69.53 | 60.84 | b | 46.03 | 35.45 | 31.58 | 48.63 | ||||||||||||
1947 | 20.85 | 32.82 | 39.71 | 46.55 | 58.02 | 61.02 | 71.11 | 70.60 | 63.92 | 53.02 | h | 33.30 | 27.40 | 47.75 | a | |||||||||||
1948 | 22.39 | 26.00 | 32.66 | 48.95 | 59.00 | 65.07 | 69.77 | 67.48 | 62.50 | e | 49.67 | b | 28.98 | a | 22.21 | l | 48.41 | a | ||||||||
1949 | 16.08 | a | 19.70 | 40.73 | 50.43 | a | 56.85 | 63.17 | a | 70.31 | 70.63 | 60.38 | 47.35 | 40.83 | 26.05 | 46.88 | ||||||||||
1950 | 20.82 | a | 29.80 | 38.08 | 48.55 | 52.92 | 62.70 | 68.19 | 66.03 | 60.28 | 54.16 | 38.77 | 30.82 | 47.59 | ||||||||||||
1951 | 20.06 | 26.57 | 36.22 | a | 47.90 | d | 57.08 | a | 60.97 | 71.35 | 68.47 | 58.70 | 48.08 | 32.92 | 19.37 | a | 45.64 | |||||||||
1952 | 18.76 | 22.57 | 30.60 | 48.55 | a | 56.60 | 65.52 | a | 70.28 | f | 67.94 | 61.27 | 50.60 | 32.15 | 22.23 | 43.34 | a | |||||||||
1953 | 28.94 | 29.55 | 40.36 | b | 43.97 | 51.60 | a | 66.03 | a | 71.90 | 66.56 | 61.27 | 50.15 | 36.62 | a | 25.23 | 47.68 | |||||||||
1954 | 30.19 | 38.02 | 37.53 | b | 51.38 | 58.66 | 64.03 | 73.81 | g | 66.74 | f | 61.08 | 50.75 | a | 39.32 | 19.50 | f | 47.89 | c | |||||||
1955 | 19.00 | 20.20 | 33.95 | 45.37 | 56.32 | 62.38 | 70.85 | 70.50 | 60.29 | b | 48.82 | 31.03 | a | 28.18 | 45.57 | |||||||||||
1956 | 31.90 | 23.24 | 36.48 | 46.78 | 58.46 | c | 66.37 | 69.34 | 64.89 | 60.85 | 50.34 | 31.48 | 22.37 | 46.88 | ||||||||||||
1957 | 23.65 | 30.45 | 39.87 | 46.07 | 52.02 | 62.43 | 68.61 | 68.45 | 58.27 | ----- | z | 33.25 | 27.76 | 46.44 | a | |||||||||||
1958 | 25.94 | 35.98 | 37.53 | 44.28 | 58.79 | 66.00 | 68.21 | 72.24 | 61.43 | 51.15 | 37.50 | ----- | z | 50.82 | a | |||||||||||
1959 | 25.89 | 30.23 | 38.11 | 47.08 | 56.53 | 65.62 | 67.34 | 65.40 | 55.97 | 46.35 | 34.70 | 27.81 | 46.75 | |||||||||||||
1960 | 23.13 | 25.03 | 39.07 | b | 47.23 | 52.94 | 63.03 | 68.65 | 66.82 | 61.53 | 47.73 | 35.83 | 25.03 | 46.34 | ||||||||||||
1961 | 24.21 | 31.23 | 38.06 | 45.22 | 56.85 | 64.62 | 69.56 | 69.79 | 53.88 | 46.85 | 34.33 | 20.71 | 46.28 | |||||||||||||
1962 | 18.23 | 31.61 | 32.97 | 48.38 | 53.76 | 61.08 | 66.02 | a | 65.23 | a | 59.20 | 50.24 | 39.20 | 27.66 | b | 46.13 | ||||||||||
1963 | 14.00 | 35.75 | 37.74 | 47.50 | 57.22 | a | 62.33 | 70.98 | 68.11 | 62.27 | 53.69 | 39.03 | 23.16 | 47.65 | ||||||||||||
1964 | 17.02 | 22.72 | 31.47 | 45.48 | 55.32 | 62.38 | 72.11 | 67.24 | 59.72 | ----- | z | 35.60 | 26.45 | 45.05 | a | |||||||||||
1965 | 29.05 | 30.25 | 34.63 | 46.90 | 54.40 | 61.80 | 69.40 | 66.84 | ----- | z | 49.90 | 41.55 | 30.68 | 46.85 | a | |||||||||||
1966 | 22.40 | 25.71 | 39.40 | 46.90 | 57.37 | 64.45 | 72.73 | 68.94 | 62.07 | 47.94 | 41.33 | 26.06 | 47.94 | |||||||||||||
1967 | 23.63 | 32.16 | 43.65 | 47.52 | 54.84 | 61.98 | b | 71.11 | 69.29 | 61.92 | 50.05 | 38.50 | 20.06 | 47.89 | ||||||||||||
1968 | 17.74 | 31.28 | 39.34 | 42.88 | 54.10 | 65.57 | 69.79 | 64.87 | 57.30 | 49.55 | 34.53 | 23.06 | 45.83 | |||||||||||||
1969 | 25.81 | 28.11 | 35.06 | 49.57 | 59.82 | 61.52 | 70.65 | 71.47 | 61.70 | 42.92 | 34.68 | 29.77 | 47.59 | |||||||||||||
1970 | 27.73 | 36.04 | 36.65 | 42.03 | 56.35 | 63.48 | 70.34 | 69.68 | 57.47 | 43.15 | 37.02 | 27.11 | 47.25 | |||||||||||||
1971 | 23.32 | 30.68 | 36.44 | 46.32 | 53.44 | 64.60 | 70.34 | 70.25 | a | 55.88 | 47.42 | 34.33 | 20.34 | 46.11 | ||||||||||||
1972 | 24.11 | 33.45 | a | 43.24 | 47.88 | 55.37 | 65.80 | 69.98 | a | 68.65 | 59.90 | 49.90 | 33.53 | 16.77 | 47.38 | |||||||||||
1973 | 14.08 | 26.39 | 38.37 | 43.28 | 54.82 | ----- | z | 67.94 | 68.68 | 58.17 | 49.92 | ----- | z | 24.27 | 44.59 | b | ||||||||||
1974 | 16.69 | 21.12 | 41.44 | 45.00 | 57.98 | 65.53 | 70.47 | 66.31 | b | 58.92 | 50.63 | 36.45 | 20.82 | 45.95 | ||||||||||||
1975 | 18.13 | 25.23 | 36.85 | 42.05 | 51.35 | 60.52 | 69.69 | 66.02 | 58.35 | 46.85 | 32.37 | 24.24 | 44.31 | |||||||||||||
1976 | 18.48 | 33.22 | 34.27 | 46.48 | 54.92 | 61.90 | 71.34 | 66.24 | 59.60 | 45.69 | 34.88 | 24.55 | 45.97 | |||||||||||||
1977 | 20.85 | 31.82 | 35.24 | 50.38 | 56.35 | 68.78 | 71.42 | 69.26 | 61.95 | 50.18 | 36.80 | 30.42 | 48.62 | |||||||||||||
1978 | 27.81 | 31.89 | 43.00 | 49.22 | 54.19 | 65.17 | 70.69 | 67.26 | 60.30 | 50.53 | 38.57 | 15.40 | 47.84 | |||||||||||||
1979 | 14.92 | 24.32 | 37.97 | 47.00 | 55.27 | 63.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.31 | 38.27 | e | |||||||
1980 | ----- | z | ----- | z | ----- | z | 46.30 | 53.95 | a | 65.23 | ----- | z | 67.48 | 60.47 | ----- | z | 36.87 | 35.35 | 52.24 | e | ||||||
1981 | 30.87 | 32.27 | 39.87 | 50.83 | 55.11 | 67.85 | 72.40 | 68.85 | 64.31 | a | 48.32 | 39.37 | 27.02 | 49.76 | ||||||||||||
1982 | 21.45 | 26.98 | 39.95 | 45.09 | a | 54.21 | 62.70 | 70.69 | 71.26 | 60.25 | b | 45.50 | 35.68 | 28.32 | 46.84 | |||||||||||
1983 | 29.92 | 35.04 | 40.87 | 42.48 | 52.02 | 62.18 | 70.28 | a | 72.96 | d | 63.92 | 50.87 | 36.92 | 24.52 | b | 48.50 | ||||||||||
1984 | 18.11 | 26.77 | a | 38.18 | 43.47 | 58.58 | 62.08 | 71.42 | 70.37 | 61.07 | 44.68 | ----- | z | 28.23 | 47.54 | a | ||||||||||
1985 | 24.56 | 24.57 | 38.71 | 49.12 | 57.52 | 66.00 | a | 71.13 | 70.73 | 57.27 | 49.34 | b | 35.33 | 27.79 | 47.67 | |||||||||||
1986 | 29.92 | a | 37.20 | 45.24 | 48.92 | 55.56 | 66.80 | 70.03 | a | 69.42 | 57.35 | 48.66 | 38.23 | 29.81 | 49.76 | |||||||||||
1987 | 25.55 | 34.73 | 38.15 | 50.33 | 56.34 | b | 66.37 | 69.32 | a | 67.63 | a | 61.08 | 52.11 | 37.53 | a | 25.74 | 48.74 | |||||||||
1988 | 18.93 | a | 28.93 | 36.92 | 49.58 | 56.19 | 69.43 | 72.37 | 70.71 | 58.97 | 54.16 | 37.15 | 26.00 | 48.28 | ||||||||||||
1989 | 18.06 | 27.34 | 42.98 | 52.05 | 57.83 | a | 64.72 | a | 72.94 | 69.02 | 62.03 | 50.02 | a | ----- | z | 28.32 | 49.57 | a | ||||||||
1990 | ----- | z | 31.88 | 43.56 | 51.45 | a | 55.95 | 68.33 | 71.27 | 69.32 | 65.57 | 49.37 | 37.30 | 18.60 | 51.15 | a | ||||||||||
1991 | 17.91 | b | 30.89 | 38.94 | 44.57 | 56.26 | 64.48 | 69.71 | 69.39 | 60.35 | 50.24 | b | 34.58 | 26.48 | 46.98 | |||||||||||
1992 | 23.35 | 37.00 | 43.58 | a | 53.48 | a | 60.26 | 64.48 | 67.47 | 67.77 | 61.08 | 52.61 | 32.33 | 24.76 | 49.02 | |||||||||||
1993 | 28.76 | 32.61 | 41.74 | 46.87 | 56.92 | 63.33 | 68.57 | q | 66.93 | a | 58.10 | a | 49.27 | a | 32.30 | 26.97 | 45.80 | a | ||||||||
1994 | 28.26 | 31.79 | 42.95 | 48.97 | 57.96 | g | 72.07 | o | 72.68 | 72.03 | 62.38 | 48.76 | 32.88 | a | 27.08 | l | 48.97 | c | ||||||||
1995 | 29.76 | d | 39.11 | a | 40.74 | d | 46.20 | 51.31 | j | 62.50 | j | 68.76 | b | 71.55 | 61.13 | 47.19 | 39.10 | a | 31.94 | 47.55 | b | |||||
1996 | 25.31 | 33.76 | 40.00 | a | 46.71 | k | 57.89 | 65.80 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.55 | g | |||
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.33 | p | 37.75 | f | 27.54 | f | ----- | z |
1998 | 31.53 | 35.83 | a | 40.12 | b | 46.48 | b | 57.32 | l | 62.04 | f | 75.15 | e | 72.48 | c | 66.58 | d | 51.48 | a | 40.75 | d | 23.06 | e | 48.35 | b | |
1999 | 30.43 | d | 34.96 | c | 45.27 | c | 45.23 | d | 51.43 | j | 65.22 | e | 74.63 | h | 71.08 | e | 60.83 | f | 52.32 | c | 41.66 | e | 27.23 | g | 48.27 | d |
2000 | 30.43 | b | 36.98 | d | 40.74 | d | 52.41 | b | 61.36 | c | 68.24 | e | 75.39 | d | 73.80 | d | 62.37 | c | 51.88 | b | 29.67 | d | 26.27 | g | 53.02 | a |
2001 | 26.30 | a | 32.72 | a | 43.30 | f | 50.55 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.83 | r | 25.06 | e | 33.66 | h |
2002 | 23.83 | b | 27.26 | i | 34.39 | i | 53.32 | m | 59.91 | o | 71.42 | x | ----- | z | ----- | z | ----- | z | 48.44 | m | 34.90 | d | 29.25 | g | 29.37 | j |
2003 | 31.77 | g | 31.30 | e | 41.77 | a | 49.76 | e | 60.14 | c | 67.38 | b | 78.55 | b | 75.38 | f | 61.60 | a | 56.40 | f | 37.48 | g | 31.34 | b | 52.73 | d |
2004 | 26.33 | a | 32.69 | c | 47.50 | f | 52.72 | c | 60.17 | k | 69.87 | k | 72.52 | d | 70.98 | j | 64.33 | o | ----- | z | ----- | z | ----- | z | 46.07 | h |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.11 | l | 36.67 | a | 24.94 | f | 36.67 | k |
2007 | 20.62 | a | 33.44 | a | 41.68 | a | 48.42 | 57.03 | a | 66.65 | 76.00 | 73.45 | 62.23 | b | 47.98 | g | 38.05 | ----- | z | 51.76 | b | |||||
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.89 | b | 36.25 | y | 37.89 | k |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 22.98 | 30.20 | 38.80 | 47.78 | 56.31 | 64.65 | 71.11 | 69.03 | 60.40 | 49.15 | 36.33 | 25.82 | 47.44 | |||||||||||||
S.D. | 4.91 | 4.93 | 3.17 | 3.01 | 2.48 | 2.39 | 2.17 | 2.05 | 2.25 | 2.42 | 3.01 | 4.29 | 1.32 | |||||||||||||
SKEW | -0.19 | -0.66 | -0.31 | -0.05 | 0.28 | 0.34 | 0.63 | 0.20 | -0.14 | -0.36 | -0.08 | -0.25 | 0.56 | |||||||||||||
MAX | 31.90 | 39.41 | 45.27 | 53.92 | 63.58 | 70.72 | 78.55 | 73.82 | 66.58 | 54.16 | 42.37 | 35.35 | 51.62 | |||||||||||||
MIN | 9.44 | 14.02 | 30.60 | 41.38 | 50.55 | 59.45 | 66.02 | 64.87 | 53.88 | 42.92 | 28.98 | 15.40 | 44.31 | |||||||||||||
YRS | 86 | 87 | 86 | 88 | 84 | 83 | 82 | 83 | 83 | 79 | 84 | 80 | 57 |