YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 20.81 | 29.54 | 31.81 | ----- | z | ----- | z | 68.60 | 65.48 | 63.26 | 54.90 | 45.97 | 40.30 | 29.26 | 44.99 | b | ||||||||||
1914 | 33.16 | 32.54 | 36.39 | 47.27 | 55.48 | 64.37 | 64.35 | 63.77 | 58.57 | 46.68 | 39.60 | 34.06 | 48.02 | |||||||||||||
1915 | 29.39 | 33.04 | 35.90 | 46.57 | 52.10 | 62.67 | 67.06 | 63.84 | 58.23 | 46.32 | 35.00 | 29.93 | a | 46.67 | ||||||||||||
1916 | 38.90 | 39.12 | d | 43.77 | 42.73 | 47.26 | 63.77 | 64.77 | 62.55 | 55.17 | 41.93 | b | 32.50 | 26.26 | 46.56 | |||||||||||
1917 | 33.03 | 31.29 | 33.45 | 39.80 | 40.45 | 52.43 | 61.81 | 62.81 | 59.20 | 45.52 | 37.10 | 33.19 | 44.17 | |||||||||||||
1918 | 26.27 | a | 35.75 | 41.45 | 45.50 | 50.06 | 63.27 | 68.52 | 63.90 | 56.83 | 49.87 | 36.93 | 30.45 | 47.40 | ||||||||||||
1919 | 26.00 | 31.79 | 36.26 | 46.33 | 53.94 | 60.13 | 65.42 | 63.81 | 59.63 | 51.07 | a | 35.40 | 32.23 | 46.83 | ||||||||||||
1920 | 33.55 | 37.83 | 35.13 | 39.93 | 54.90 | 59.20 | 65.81 | 61.03 | 57.87 | 47.77 | 35.77 | 25.90 | 46.22 | |||||||||||||
1921 | 30.26 | 33.79 | 39.68 | 39.53 | 53.32 | 62.80 | 66.03 | 65.65 | 59.63 | 49.65 | 35.53 | 36.13 | 47.67 | |||||||||||||
1922 | 30.26 | 32.82 | 37.48 | 44.93 | 55.42 | 64.27 | 67.10 | 67.23 | 60.93 | 49.32 | 36.87 | 35.94 | 48.55 | |||||||||||||
1923 | 35.58 | 35.50 | 38.26 | 47.73 | 56.45 | 64.53 | 67.52 | 64.61 | 57.33 | 47.81 | 37.66 | a | 33.52 | 48.87 | ||||||||||||
1924 | 27.10 | 32.90 | 37.16 | 45.47 | 55.06 | 66.43 | 68.16 | 67.32 | 57.60 | 48.58 | 40.37 | 23.63 | a | 47.48 | ||||||||||||
1925 | 20.90 | 34.93 | 41.29 | 49.03 | 56.45 | 62.87 | 67.35 | 63.16 | 60.67 | 49.94 | 35.47 | 27.03 | 47.42 | |||||||||||||
1926 | 27.39 | 35.36 | 35.45 | 46.03 | 54.16 | 62.30 | 64.23 | 63.39 | 62.07 | 51.29 | 37.50 | 34.16 | 47.78 | |||||||||||||
1927 | 33.63 | a | 40.64 | 39.48 | 46.37 | 54.94 | 61.37 | 66.74 | 65.43 | a | 59.53 | 47.26 | 43.10 | 31.53 | a | 49.17 | ||||||||||
1928 | 29.87 | 33.34 | 42.23 | 44.27 | 55.35 | 63.13 | 67.00 | 64.23 | 57.23 | 52.19 | 37.30 | 31.68 | 48.15 | |||||||||||||
1929 | 31.19 | 31.14 | 36.63 | a | 46.77 | 52.81 | 63.07 | 65.26 | 65.00 | 60.67 | 49.03 | 31.47 | 28.00 | 46.75 | ||||||||||||
1930 | 28.58 | 35.71 | 36.29 | 48.57 | 51.55 | 62.10 | 66.71 | 64.87 | 59.77 | 51.00 | 36.53 | 27.81 | 47.46 | |||||||||||||
1931 | 30.00 | 39.39 | 37.06 | 46.30 | 52.87 | 62.17 | 67.13 | 63.55 | 63.00 | 51.61 | 39.23 | 32.00 | 48.69 | |||||||||||||
1932 | 30.00 | a | 40.69 | 38.19 | 45.73 | 54.97 | 54.60 | y | ----- | z | 63.74 | 55.24 | a | 47.23 | 33.47 | 30.90 | 44.02 | b | ||||||||
1933 | 28.48 | 29.86 | 41.55 | 43.20 | 53.10 | b | 63.27 | 69.77 | 69.67 | a | 63.70 | 53.29 | 38.73 | 33.16 | 48.98 | |||||||||||
1934 | 26.00 | 36.25 | 43.27 | a | 53.40 | 59.87 | 67.70 | 73.94 | 77.74 | 61.73 | 49.48 | 38.07 | 33.97 | 51.78 | ||||||||||||
1935 | 33.03 | 32.64 | 40.26 | 45.90 | i | 52.00 | p | 59.60 | 64.19 | 63.23 | 54.67 | 47.35 | 34.43 | 28.55 | 45.80 | b | ||||||||||
1936 | 26.74 | 34.00 | 38.65 | 45.80 | 53.87 | 61.27 | 64.47 | a | 62.13 | 56.47 | 44.97 | 33.80 | 28.45 | 45.88 | ||||||||||||
1937 | 24.10 | 30.46 | 34.26 | 44.13 | 53.03 | 60.10 | 63.55 | 63.61 | 58.77 | 47.16 | 34.83 | 30.48 | 45.37 | |||||||||||||
1938 | 30.06 | 35.75 | 38.52 | 42.07 | 49.81 | 61.67 | 63.29 | 62.58 | 56.07 | 48.39 | 29.87 | 30.32 | 45.70 | |||||||||||||
1939 | 28.52 | 24.75 | 37.68 | 43.69 | a | 52.00 | 60.73 | 64.19 | 61.35 | 57.80 | 43.61 | 34.73 | 30.19 | 44.94 | ||||||||||||
1940 | 25.52 | 31.93 | 37.52 | 42.47 | 52.06 | 58.87 | 64.45 | 62.48 | 56.93 | 47.71 | 34.20 | 32.61 | 45.56 | |||||||||||||
1941 | 31.87 | 35.75 | 36.68 | 42.33 | 54.06 | 58.13 | 59.39 | 60.71 | 58.20 | 48.39 | 35.97 | 30.26 | 45.98 | |||||||||||||
1942 | 29.77 | 32.27 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 29.77 | k | |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.73 | o | 20.03 | b | 20.03 | k |
1944 | 21.07 | c | 27.52 | 37.36 | c | 45.27 | 57.48 | 66.89 | b | 66.48 | 60.65 | 54.97 | 46.29 | 33.67 | 24.74 | 45.20 | ||||||||||
1945 | 29.58 | 33.64 | 37.19 | 47.61 | b | 60.26 | 63.93 | 59.94 | 57.45 | 51.80 | 40.97 | 31.50 | 19.94 | 44.48 | ||||||||||||
1946 | 19.52 | 22.39 | 29.81 | 46.93 | 53.23 | 63.17 | 64.06 | 65.32 | 61.70 | 48.68 | 29.93 | 32.74 | 44.79 | |||||||||||||
1947 | 25.83 | a | 31.61 | 37.68 | 42.80 | 55.10 | 59.97 | 68.11 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.16 | f | |||||
1948 | 23.63 | a | 32.24 | 33.35 | 45.64 | s | 55.26 | 62.97 | 65.76 | n | 65.35 | 58.77 | 47.84 | 30.60 | 33.00 | 44.30 | b | |||||||||
1949 | 27.37 | a | 32.61 | 41.29 | 44.17 | 53.35 | 64.75 | f | 65.94 | 63.61 | 61.61 | g | 45.68 | 37.50 | l | 28.95 | l | 46.75 | d | |||||||
1950 | 32.68 | 36.00 | 39.29 | 44.73 | 54.91 | h | 64.27 | 64.65 | 61.97 | 57.40 | 53.19 | 37.00 | 30.55 | 47.43 | a | |||||||||||
1951 | 28.42 | 33.53 | i | 38.23 | e | 45.23 | 48.68 | 62.37 | 70.90 | 66.94 | 59.57 | 52.40 | f | 36.13 | 34.35 | e | 49.08 | b | ||||||||
1952 | 35.55 | 31.07 | 34.03 | 45.30 | 53.20 | a | 65.03 | 66.16 | 70.61 | 64.40 | 42.84 | 31.67 | 29.44 | d | 47.44 | |||||||||||
1953 | 33.32 | 30.50 | 36.53 | a | 46.56 | u | 47.68 | 63.00 | 65.65 | 61.35 | 53.30 | 41.84 | 31.73 | 18.78 | d | 43.97 | a | |||||||||
1954 | 26.81 | 30.89 | 34.77 | a | 47.33 | c | 52.74 | 60.00 | 64.55 | 71.65 | 65.93 | 49.00 | 33.60 | 27.10 | 47.03 | |||||||||||
1955 | 26.29 | 26.10 | g | 34.58 | 41.17 | 47.84 | 59.70 | 60.84 | 61.39 | 56.03 | 45.90 | 31.10 | 26.06 | 44.63 | a | |||||||||||
1956 | 28.19 | 26.14 | 34.23 | ----- | z | 51.15 | e | 62.03 | 61.13 | 64.87 | 55.77 | 46.90 | 28.30 | 27.13 | 44.17 | a | ||||||||||
1957 | 33.32 | 42.61 | 38.96 | g | 43.87 | ----- | z | 62.07 | a | 66.71 | 63.76 | b | 54.17 | 46.71 | 32.97 | 27.26 | 47.34 | b | ||||||||
1958 | 25.61 | 34.44 | a | 38.12 | o | 43.27 | 52.87 | 63.57 | 65.26 | 64.13 | 58.53 | 47.58 | 34.67 | 25.71 | 46.88 | a | ||||||||||
1959 | 25.87 | 30.82 | 33.81 | 45.47 | 52.84 | 63.53 | 64.71 | 64.23 | 57.53 | 45.32 | 29.07 | 29.84 | 45.25 | |||||||||||||
1960 | 26.10 | 25.31 | 37.29 | 43.33 | 51.29 | 64.63 | 63.68 | 64.39 | 56.77 | 45.90 | 34.37 | 25.77 | 44.90 | |||||||||||||
1961 | 24.90 | 28.96 | 36.06 | 43.17 | 53.26 | 59.33 | 63.03 | 60.81 | 54.47 | 42.65 | 33.17 | 30.48 | 44.19 | |||||||||||||
1962 | 24.68 | 34.75 | 32.52 | 44.67 | 54.23 | 61.17 | 64.84 | 64.10 | 58.90 | 46.48 | 35.70 | 29.39 | 45.95 | |||||||||||||
1963 | 22.03 | 30.68 | 36.13 | ----- | z | 54.42 | 60.23 | 66.42 | 62.65 | 57.00 | 47.13 | 33.53 | 22.61 | 44.80 | a | |||||||||||
1964 | 20.03 | 22.41 | 34.94 | 42.63 | 53.52 | 61.20 | 66.87 | 62.06 | 58.90 | 45.16 | 33.17 | a | 26.58 | 43.96 | ||||||||||||
1965 | 29.32 | 27.96 | 34.00 | 44.57 | 50.94 | 58.23 | 64.94 | 60.90 | a | 56.33 | 41.61 | 38.23 | 29.71 | 44.73 | ||||||||||||
1966 | 23.58 | 24.71 | 34.06 | 44.23 | 52.90 | 61.57 | 66.03 | 62.52 | 56.27 | 44.06 | 37.43 | 25.71 | 44.42 | |||||||||||||
1967 | 23.03 | 31.68 | 41.52 | 47.40 | 50.74 | 61.97 | 66.16 | 61.19 | 56.53 | 46.00 | 36.73 | 27.97 | 45.91 | |||||||||||||
1968 | 28.06 | 34.28 | 38.39 | 42.43 | 52.97 | 60.97 | 64.26 | 60.16 | 52.30 | 46.68 | 34.90 | 24.19 | 44.97 | |||||||||||||
1969 | 32.77 | 32.25 | 31.90 | 47.23 | 54.32 | 62.13 | 68.23 | 67.13 | 58.10 | a | 49.71 | 34.47 | 31.26 | 47.46 | ||||||||||||
1970 | 27.35 | 32.71 | 35.58 | 42.73 | 53.26 | 61.17 | 66.48 | 64.61 | 59.40 | 44.16 | 35.53 | 32.81 | 46.32 | |||||||||||||
1971 | 29.61 | 30.50 | 38.10 | 44.07 | 53.48 | 61.73 | 66.71 | 60.71 | 58.43 | 47.43 | a | 37.27 | 31.26 | 46.61 | ||||||||||||
1972 | 28.29 | 32.28 | 41.84 | 46.20 | 52.65 | 61.43 | 65.97 | 62.32 | 57.83 | ----- | z | 31.18 | h | 29.94 | o | 49.87 | c | |||||||||
1973 | 26.19 | 30.48 | a | 35.55 | 39.23 | 51.39 | 59.87 | 65.03 | 63.32 | 57.53 | 44.42 | 36.97 | 27.39 | 44.78 | ||||||||||||
1974 | 31.81 | 28.21 | 43.65 | 45.53 | 57.42 | 62.90 | 65.48 | 62.45 | b | 56.73 | 49.65 | 36.11 | c | 26.53 | a | 47.21 | ||||||||||
1975 | 27.77 | 33.04 | 39.87 | 39.87 | 49.76 | b | 59.70 | 60.55 | 62.23 | 54.97 | 45.90 | 33.46 | d | 26.13 | 44.44 | |||||||||||
1976 | 27.35 | 38.07 | 40.84 | 46.27 | 53.42 | 63.10 | 63.16 | 62.29 | 57.30 | 42.84 | 31.40 | 25.42 | 45.95 | |||||||||||||
1977 | 27.68 | 30.54 | 34.10 | 43.90 | 53.65 | 63.03 | 64.06 | 65.97 | 59.73 | 48.81 | 36.60 | 32.26 | 46.69 | |||||||||||||
1978 | 30.57 | a | 31.96 | 41.29 | 47.30 | 54.90 | 62.70 | 66.71 | ----- | z | 57.67 | 48.16 | 41.30 | ----- | z | 48.26 | b | |||||||||
1979 | 28.39 | 32.43 | 37.16 | ----- | z | ----- | z | 58.87 | 65.71 | 60.65 | 56.57 | 46.65 | 31.30 | 27.32 | 44.50 | b | ||||||||||
1980 | 33.48 | 34.28 | 36.68 | 42.30 | 53.10 | 67.43 | 69.00 | 65.10 | 58.70 | 43.90 | 33.57 | 31.07 | a | 47.38 | ||||||||||||
1981 | 31.77 | a | 34.50 | 37.55 | 49.60 | 54.94 | 64.57 | 67.77 | 63.13 | 58.55 | a | 49.65 | 37.10 | a | 31.81 | 48.41 | ||||||||||
1982 | 31.86 | b | 35.00 | a | 40.58 | 48.73 | 52.45 | 62.80 | 68.32 | 66.71 | 60.28 | a | 45.84 | 37.43 | 28.97 | b | 48.25 | |||||||||
1983 | 29.10 | 33.96 | 39.13 | 40.87 | 50.68 | 59.53 | 65.87 | 66.26 | 62.73 | 51.48 | 38.21 | b | 29.83 | b | 47.30 | |||||||||||
1984 | 28.35 | 29.45 | 39.00 | 45.60 | 59.39 | 64.07 | 66.52 | 64.26 | 58.07 | b | 47.03 | 37.77 | 33.40 | a | 47.74 | |||||||||||
1985 | 28.42 | 31.21 | 40.87 | 47.30 | 55.45 | 62.33 | 64.87 | 65.94 | 57.60 | 47.84 | 38.60 | 27.55 | 47.33 | |||||||||||||
1986 | 30.13 | 37.93 | 40.90 | 51.17 | 54.00 | 63.47 | 64.68 | 66.10 | 58.90 | 46.48 | 35.47 | 29.55 | 48.23 | |||||||||||||
1987 | 26.06 | 32.25 | 35.13 | 43.63 | 53.48 | 61.23 | 66.35 | 64.65 | 56.43 | 50.97 | 35.37 | 27.20 | a | 46.06 | ||||||||||||
1988 | 28.77 | 34.34 | 36.84 | 44.83 | 53.52 | 62.57 | 65.61 | 64.42 | 56.17 | 50.39 | 39.03 | 27.39 | 46.99 | |||||||||||||
1989 | 29.06 | 37.18 | 41.16 | 50.77 | 58.10 | 64.90 | 68.35 | 65.94 | 58.10 | 47.32 | 36.34 | a | 24.61 | 48.49 | ||||||||||||
1990 | 28.71 | 30.38 | b | 40.10 | 49.10 | 55.84 | 69.13 | 65.16 | 62.90 | 59.93 | 46.45 | 37.38 | a | 30.40 | a | 47.96 | ||||||||||
1991 | 30.32 | 37.00 | 38.87 | 46.90 | 56.23 | 63.38 | a | 65.48 | 65.06 | 56.90 | 48.42 | 35.53 | 31.71 | 47.98 | ||||||||||||
1992 | 27.13 | 34.41 | 40.03 | 47.57 | 54.10 | 60.90 | 66.00 | 64.48 | 59.47 | 50.27 | a | 32.77 | 30.97 | a | 47.34 | |||||||||||
1993 | 35.00 | 35.82 | 39.23 | 47.93 | 54.52 | 64.37 | 68.32 | 66.16 | 59.27 | 47.35 | 34.67 | 30.06 | 48.56 | |||||||||||||
1994 | 28.19 | 33.43 | 41.03 | 48.07 | 56.00 | 68.93 | 69.94 | 68.48 | 59.13 | 48.42 | 39.14 | b | 34.10 | 49.57 | ||||||||||||
1995 | 31.81 | 39.32 | 42.19 | 43.60 | 55.68 | 62.70 | 65.61 | 67.10 | 59.77 | 48.61 | 39.73 | 32.39 | 49.04 | |||||||||||||
1996 | 30.58 | 40.14 | 38.58 | 48.07 | 59.87 | 66.80 | 69.10 | 66.10 | 58.53 | 49.52 | 39.50 | 30.52 | 49.77 | |||||||||||||
1997 | 30.67 | a | 34.50 | 41.90 | 45.76 | a | 57.10 | 63.30 | 67.29 | 65.77 | 63.00 | a | 47.26 | 37.03 | 27.73 | a | 48.44 | |||||||||
1998 | 31.77 | 33.86 | 39.50 | a | 43.93 | 57.13 | 63.87 | 68.26 | 65.68 | 64.37 | 51.35 | 39.73 | 31.00 | a | 49.20 | |||||||||||
1999 | 33.06 | 36.32 | 42.10 | a | 46.93 | 56.16 | 63.67 | 67.90 | 67.23 | 60.87 | ----- | z | 39.25 | b | 28.03 | 49.23 | a | |||||||||
2000 | 30.82 | c | ----- | z | 40.58 | 50.83 | 61.79 | b | 65.24 | a | 69.87 | a | 67.61 | 62.24 | a | ----- | z | ----- | z | ----- | z | 56.12 | d | |||
2001 | 28.90 | a | 34.48 | c | ----- | z | 46.12 | d | 57.81 | ----- | z | 69.45 | ----- | z | ----- | z | ----- | z | 41.07 | b | 28.36 | c | 43.74 | e | ||
2002 | 30.08 | f | ----- | z | ----- | z | 52.40 | 55.35 | 68.60 | 67.58 | 68.48 | ----- | z | 47.33 | a | 36.25 | b | 30.10 | a | 53.26 | d | |||||
2003 | 32.10 | a | ----- | z | 40.60 | a | 47.14 | a | 58.27 | a | 63.57 | 69.32 | 68.20 | a | 61.86 | a | 53.52 | 38.93 | b | 31.14 | j | 53.35 | b | |||
2004 | 37.03 | 34.66 | 46.23 | 49.40 | 60.59 | b | 66.47 | 69.06 | 65.03 | 60.00 | 52.94 | 39.40 | 34.29 | 51.26 | ||||||||||||
2005 | 39.13 | a | 39.18 | 41.61 | 48.50 | b | 59.03 | b | 68.13 | 70.48 | 66.35 | 65.47 | 53.00 | 44.33 | 36.77 | 52.67 | ||||||||||
2006 | 36.97 | a | 39.82 | 44.71 | 53.50 | 62.26 | 68.93 | 69.94 | 65.23 | 59.27 | 50.94 | 43.87 | 32.24 | b | 52.31 | |||||||||||
2007 | 31.39 | 37.75 | 44.68 | 49.20 | ----- | z | ----- | z | ----- | z | ----- | z | 60.20 | t | 47.45 | t | 38.88 | m | 31.95 | k | 40.75 | h | ||||
2008 | 29.50 | k | 34.62 | h | 39.10 | k | 46.53 | k | 53.54 | r | 67.18 | m | 65.60 | u | 66.00 | v | 57.06 | n | 46.62 | o | 39.62 | q | 34.18 | n | ----- | z |
2009 | 30.93 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.07 | 33.24 | 38.18 | 45.62 | 54.12 | 62.81 | 66.08 | 64.41 | 58.47 | 47.66 | 35.94 | 29.44 | 47.16 | |||||||||||||
S.D. | 3.96 | 3.98 | 3.25 | 3.01 | 3.33 | 2.79 | 2.47 | 2.83 | 2.75 | 2.83 | 3.23 | 3.56 | 1.91 | |||||||||||||
SKEW | -0.02 | -0.31 | -0.01 | 0.22 | -0.48 | -0.04 | -0.05 | 1.28 | 0.36 | -0.10 | 0.06 | -0.55 | 0.62 | |||||||||||||
MAX | 39.13 | 42.61 | 46.23 | 53.50 | 62.26 | 69.13 | 73.94 | 77.74 | 65.93 | 53.52 | 44.33 | 36.77 | 52.67 | |||||||||||||
MIN | 19.52 | 22.39 | 29.81 | 39.23 | 40.45 | 52.43 | 59.39 | 57.45 | 51.80 | 40.97 | 28.30 | 18.78 | 43.96 | |||||||||||||
YRS | 93 | 88 | 89 | 86 | 87 | 89 | 89 | 89 | 88 | 86 | 88 | 87 | 70 |