YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.62 | e | 33.17 | 32.90 | a | 34.23 | i | |
1906 | 34.23 | 34.75 | 33.54 | e | 39.58 | d | 41.65 | 46.27 | 52.61 | 47.81 | 47.00 | 42.87 | 37.20 | 35.00 | 41.04 | |||||||||||
1907 | 25.69 | b | 34.25 | 33.39 | 35.57 | 43.29 | 47.67 | 50.40 | a | 49.29 | 47.43 | 45.06 | 39.10 | j | 35.13 | 40.65 | a | |||||||||
1908 | 33.62 | e | 32.76 | h | 34.42 | e | 37.64 | b | 41.81 | 47.47 | 52.44 | d | 49.32 | 42.37 | 41.06 | 38.60 | 30.31 | b | 40.82 | a | ||||||
1909 | 27.61 | 35.93 | a | 32.81 | 36.17 | 40.32 | 44.97 | 46.81 | 42.97 | a | 43.77 | 39.90 | a | 36.21 | a | 24.68 | 37.68 | |||||||||
1910 | 27.13 | 28.82 | 35.10 | ----- | z | 42.00 | 43.80 | 46.42 | 45.52 | 41.60 | 42.32 | 35.53 | 32.77 | 38.27 | a | |||||||||||
1911 | 30.52 | 28.82 | 30.50 | a | 32.23 | 40.39 | 42.72 | a | 48.00 | 47.29 | 44.93 | 37.10 | 34.23 | 32.97 | 37.48 | |||||||||||
1912 | 31.10 | a | 34.64 | a | 31.48 | 35.77 | 40.22 | m | 46.60 | 49.61 | 48.81 | 43.20 | 36.81 | 35.70 | 33.10 | 38.80 | a | |||||||||
1913 | 28.10 | 28.57 | 32.10 | 35.57 | 41.29 | 47.07 | a | 49.17 | a | 50.39 | 43.70 | 38.87 | a | 36.73 | 31.80 | a | 38.61 | |||||||||
1914 | 35.13 | a | 33.64 | 37.08 | g | 37.77 | 39.45 | 48.32 | b | 51.42 | g | 45.87 | a | 44.20 | 43.71 | 36.24 | a | 23.82 | c | 38.82 | b | |||||
1915 | 27.26 | 34.21 | 34.70 | a | 36.67 | 42.13 | 44.00 | b | 44.17 | a | 44.71 | j | ----- | z | ----- | z | ----- | z | 31.38 | o | 37.59 | e | ||||
1916 | 24.13 | 32.93 | 34.68 | 36.80 | 36.16 | 43.73 | 48.96 | c | 52.00 | a | 44.70 | 28.58 | 31.80 | 34.00 | 37.37 | |||||||||||
1917 | 27.80 | u | ----- | z | ----- | z | 36.87 | 40.87 | 42.00 | 42.35 | 43.58 | 42.50 | 37.61 | h | ----- | z | 38.29 | 40.92 | e | |||||||
1918 | 33.06 | 31.07 | 34.03 | 33.31 | a | 35.80 | a | 42.27 | 47.84 | 53.63 | d | 44.00 | n | 43.20 | a | 39.66 | a | 31.20 | a | 38.64 | a | |||||
1919 | 27.81 | 32.32 | 35.39 | 42.13 | 42.93 | a | 47.13 | 46.97 | 47.32 | 38.03 | 39.67 | p | 39.63 | c | 24.96 | c | 38.60 | a | ||||||||
1920 | 31.90 | b | 27.69 | 33.13 | 32.67 | 33.58 | 41.80 | 45.65 | 46.84 | 41.86 | p | ----- | z | ----- | z | ----- | z | 36.66 | d | |||||||
1921 | ----- | z | ----- | z | ----- | z | 33.66 | a | 37.23 | a | 44.37 | 49.47 | a | 57.83 | a | 45.00 | 43.83 | a | 40.54 | b | 30.20 | a | 42.46 | c | ||
1922 | 23.93 | a | 29.54 | b | 34.42 | 40.72 | a | 37.45 | 44.50 | b | 45.10 | 46.12 | g | ----- | z | ----- | z | ----- | z | 25.70 | d | 35.17 | d | |||
1923 | 31.65 | ----- | z | ----- | z | ----- | z | 45.04 | f | 42.23 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.94 | j | ||
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.64 | f | 45.93 | 35.87 | 34.17 | 33.90 | 37.47 | h | ||||
1926 | 31.43 | a | 35.42 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 33.43 | j |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 38.08 | f | 31.73 | a | 31.73 | k |
1928 | ----- | z | ----- | z | 37.16 | 37.30 | 41.13 | 49.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.18 | h | ||||
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.55 | ----- | z | ----- | z | 37.55 | k | |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.76 | m | 46.53 | a | 49.52 | 41.10 | 41.64 | i | 38.17 | 26.97 | 40.46 | g | ||||
1933 | 29.13 | a | 26.43 | 33.23 | 35.59 | a | 40.61 | 44.23 | 45.58 | 47.61 | 44.90 | 41.45 | 35.70 | 36.97 | 38.45 | |||||||||||
1934 | 35.29 | 34.29 | 36.87 | 42.07 | 44.29 | 44.20 | 47.52 | 48.65 | 44.23 | 40.71 | 38.83 | 33.58 | 40.88 | |||||||||||||
1935 | 27.81 | 32.18 | 31.48 | 33.80 | 37.58 | 45.20 | 47.61 | 45.97 | 44.30 | 36.39 | 26.97 | 30.45 | 36.64 | |||||||||||||
1936 | 32.58 | 24.28 | 30.71 | 38.37 | 42.97 | 48.27 | 47.13 | 46.19 | 40.97 | 38.55 | 25.30 | 32.39 | 37.31 | |||||||||||||
1937 | 15.65 | 28.25 | 34.94 | 36.63 | 38.84 | 47.00 | a | 48.19 | 46.97 | b | 45.40 | 38.61 | 37.30 | 31.77 | 37.46 | |||||||||||
1938 | 28.42 | 29.61 | 31.68 | 36.73 | 38.84 | 44.17 | 46.58 | 44.96 | f | 44.56 | c | 37.37 | d | 32.43 | 30.48 | 36.44 | a | |||||||||
1939 | 32.87 | 28.93 | 30.32 | 35.55 | a | 39.81 | 44.10 | 47.32 | 45.23 | 43.53 | 40.68 | 35.53 | 36.35 | 38.35 | ||||||||||||
1940 | 34.45 | 36.93 | 37.55 | 40.93 | 43.03 | 45.40 | 55.36 | f | 48.87 | 50.00 | 45.04 | d | 32.93 | 33.94 | 40.82 | a | ||||||||||
1941 | 32.84 | 34.11 | 36.58 | 38.93 | 44.52 | 47.60 | 52.61 | 50.72 | m | 46.97 | 41.17 | g | 37.30 | 33.94 | 40.54 | b | ||||||||||
1942 | 31.55 | 32.39 | 33.35 | 38.53 | 43.77 | 47.20 | 52.10 | 52.07 | c | 43.60 | 40.55 | b | 33.57 | 32.00 | 40.06 | |||||||||||
1943 | 23.39 | 28.61 | 31.52 | 38.33 | 39.13 | 44.23 | 48.00 | 45.68 | 42.87 | 39.37 | d | 33.43 | 27.39 | 36.83 | ||||||||||||
1944 | 29.00 | 32.66 | 33.06 | 39.17 | 43.61 | 48.60 | 50.84 | 46.88 | f | 44.97 | 40.83 | b | 33.07 | 29.77 | 38.69 | a | ||||||||||
1945 | 31.32 | 33.18 | 31.77 | 35.07 | 43.06 | 42.27 | 46.16 | 47.00 | 43.57 | 38.58 | 34.60 | 30.48 | 38.09 | |||||||||||||
1946 | 30.48 | b | 31.21 | 33.20 | a | 35.73 | 41.58 | 44.57 | 47.97 | 46.35 | 44.53 | 34.66 | b | 29.67 | 30.58 | 37.54 | ||||||||||
1947 | 24.29 | 30.79 | 32.77 | 35.93 | 41.77 | 46.60 | 48.23 | 45.94 | 43.97 | 42.58 | 35.43 | 33.13 | 38.45 | |||||||||||||
1948 | 29.58 | 27.62 | 32.32 | 35.00 | 41.87 | 51.95 | i | 61.00 | ----- | z | ----- | z | 34.00 | q | 31.50 | 26.87 | 35.72 | d | ||||||||
1949 | 15.19 | 24.68 | 32.16 | 35.07 | 39.32 | 41.77 | d | 41.17 | h | 44.32 | 41.53 | 31.87 | 34.10 | 28.87 | 33.54 | a | ||||||||||
1950 | 16.19 | 31.00 | a | 36.16 | 36.23 | 38.45 | 45.82 | b | 46.00 | h | 48.59 | b | 42.10 | 38.71 | 36.40 | 37.77 | 37.04 | a | ||||||||
1951 | 29.42 | 31.14 | 30.35 | 32.37 | 40.42 | 44.50 | 48.07 | a | 45.39 | 43.57 | 39.58 | 33.70 | 28.74 | 37.27 | ||||||||||||
1952 | 26.52 | 30.90 | 32.55 | 35.00 | 39.71 | 44.23 | 47.32 | 48.11 | d | 40.33 | 37.84 | 27.03 | 30.65 | 36.68 | ||||||||||||
1953 | 35.58 | 32.64 | 32.97 | 35.37 | 40.61 | 44.83 | 48.55 | 46.61 | h | 44.07 | 39.00 | 37.24 | e | 35.19 | 38.73 | a | ||||||||||
1954 | 29.97 | 32.64 | 30.35 | 35.53 | 40.55 | 46.00 | 48.04 | d | 49.29 | 46.73 | 38.81 | 39.57 | 34.06 | 39.30 | ||||||||||||
1955 | 31.68 | 30.07 | 29.39 | 32.83 | 39.31 | b | 47.27 | 49.57 | h | 46.55 | 42.47 | 38.68 | 29.90 | 30.42 | 36.23 | a | ||||||||||
1956 | 29.26 | 27.28 | 30.68 | 35.30 | 42.61 | 45.37 | 46.36 | i | 48.62 | e | 43.37 | 38.68 | 31.17 | 31.68 | 36.73 | a | ||||||||||
1957 | 22.16 | 29.04 | 34.74 | 38.37 | 45.42 | 48.44 | c | 47.96 | e | 46.03 | 43.67 | 38.45 | i | 31.00 | f | 34.03 | 38.99 | b | ||||||||
1958 | 34.48 | 39.14 | 32.26 | 35.93 | 45.16 | 51.77 | 53.35 | h | 47.10 | 44.67 | 40.19 | 35.30 | 36.55 | 40.23 | a | |||||||||||
1959 | 33.55 | 32.64 | 34.90 | 37.33 | 40.42 | 47.61 | g | 48.26 | 46.13 | 45.77 | 39.94 | 32.53 | 31.71 | 38.47 | a | |||||||||||
1960 | 29.13 | 31.52 | 31.35 | 36.24 | a | 41.35 | 43.37 | k | 47.19 | 50.55 | 45.23 | 40.97 | 33.33 | 31.55 | 38.04 | a | ||||||||||
1961 | 35.77 | 37.00 | 36.26 | 38.07 | 42.19 | 48.50 | 49.55 | 50.10 | b | 41.53 | 37.19 | 31.10 | 30.77 | 39.84 | ||||||||||||
1962 | 27.74 | 31.04 | 30.61 | 36.97 | 40.55 | 42.39 | g | 46.15 | d | 48.87 | 43.93 | 38.84 | 35.30 | 32.45 | 37.50 | a | ||||||||||
1963 | 23.87 | 36.14 | 31.90 | b | 36.83 | g | 40.32 | 45.07 | 47.74 | 48.68 | c | 46.77 | 40.84 | 34.83 | 29.81 | 38.72 | a | |||||||||
1964 | 31.55 | 29.62 | 34.06 | 34.63 | 39.92 | f | 46.21 | f | 49.26 | 48.03 | 42.90 | 38.90 | 32.03 | 29.68 | 37.07 | b | ||||||||||
1965 | 31.58 | 33.50 | 29.97 | 36.43 | 37.19 | d | 42.89 | b | 47.21 | b | 49.26 | 39.77 | 39.52 | 37.70 | ----- | z | 38.64 | a | ||||||||
1966 | ----- | z | ----- | z | 31.71 | 35.71 | b | ----- | z | 44.17 | 46.52 | 42.61 | 42.23 | 34.32 | 32.23 | h | 34.84 | 39.01 | d | |||||||
1967 | 34.60 | a | 30.10 | g | 30.54 | r | ----- | z | 37.24 | b | ----- | z | 43.35 | n | 42.90 | ----- | z | ----- | z | 36.57 | 30.39 | 36.34 | g | |||
1968 | 30.35 | 35.97 | 37.17 | b | 35.63 | 42.70 | a | 46.14 | b | 51.52 | b | 48.83 | a | 45.63 | 38.71 | 36.03 | 29.00 | a | 39.81 | |||||||
1969 | 24.52 | 30.07 | 32.39 | 37.37 | 43.57 | a | 53.30 | 48.71 | 47.94 | 47.21 | a | 37.39 | 36.77 | 34.03 | 39.44 | |||||||||||
1970 | 31.03 | 35.11 | 33.10 | 34.63 | 41.39 | 48.33 | 49.74 | 47.90 | 43.60 | 37.74 | 37.57 | 30.29 | 39.20 | |||||||||||||
1971 | 28.45 | 32.04 | 30.48 | 35.48 | a | 41.55 | 45.37 | 51.55 | 52.42 | 43.69 | a | 37.68 | 36.00 | a | 30.61 | 38.78 | ||||||||||
1972 | 27.37 | a | 31.28 | 36.03 | 35.17 | 42.58 | 47.90 | 50.03 | 49.68 | 42.17 | 35.61 | 35.67 | 27.16 | 38.39 | ||||||||||||
1973 | 29.42 | 32.32 | 34.48 | 35.43 | 43.81 | 48.33 | 49.36 | c | 47.06 | 47.03 | 40.13 | 33.50 | 36.23 | 39.76 | ||||||||||||
1974 | 27.32 | 32.68 | 34.26 | 37.90 | 40.74 | 46.97 | 50.90 | 50.65 | 47.53 | 38.32 | 37.03 | a | 33.94 | 39.85 | ||||||||||||
1975 | 30.94 | 31.50 | 32.06 | 32.57 | 41.13 | 47.07 | 52.55 | 50.10 | 46.30 | 41.68 | 33.77 | 33.77 | 39.45 | |||||||||||||
1976 | 32.23 | 30.72 | 31.55 | 37.07 | 41.84 | 44.83 | 50.42 | 52.19 | 49.17 | 38.45 | 35.33 | 32.13 | 39.66 | |||||||||||||
1977 | 25.97 | 34.00 | 33.10 | 37.70 | 41.26 | 47.93 | 49.52 | 53.03 | 45.87 | 38.74 | 33.50 | 35.03 | 39.64 | |||||||||||||
1978 | 35.87 | 36.25 | 37.06 | 38.37 | 41.65 | 49.47 | 51.58 | 52.19 | 48.37 | 39.77 | 29.07 | 27.26 | 40.58 | |||||||||||||
1979 | 26.26 | 30.86 | 34.90 | 39.13 | 43.52 | 46.13 | 50.32 | 51.39 | 49.40 | 42.35 | 34.43 | 37.00 | 40.47 | |||||||||||||
1980 | 25.90 | 34.14 | 35.61 | 40.00 | 43.13 | 47.50 | 50.77 | 49.19 | 47.33 | 39.42 | 37.17 | 34.03 | 40.35 | |||||||||||||
1981 | 38.19 | 33.21 | 36.39 | 38.40 | 43.42 | 47.23 | 51.55 | 52.45 | 47.93 | 37.71 | 36.37 | 34.03 | 41.41 | |||||||||||||
1982 | 29.19 | 32.25 | 33.16 | 34.63 | 41.23 | 49.40 | 50.58 | 50.81 | 46.55 | a | 40.39 | 32.80 | 31.55 | 39.38 | ||||||||||||
1983 | 34.97 | 36.75 | 38.23 | 35.76 | a | 44.68 | 47.77 | 51.30 | a | 52.45 | 43.50 | 36.29 | 38.13 | 26.68 | 40.54 | |||||||||||
1984 | 32.42 | 34.00 | 37.52 | 36.63 | 41.42 | 45.77 | 48.90 | 48.16 | 45.70 | 38.10 | 35.83 | 29.32 | 39.48 | |||||||||||||
1985 | ----- | z | 27.82 | 30.94 | 37.73 | 42.29 | 45.83 | 49.90 | a | 48.26 | 43.83 | 37.77 | 26.83 | 25.65 | 37.90 | a | ||||||||||
1986 | 36.00 | a | 32.82 | 37.42 | 37.07 | 43.90 | a | 48.47 | 49.68 | 50.81 | 44.23 | 39.10 | 35.97 | 32.23 | 40.64 | |||||||||||
1987 | 30.26 | 34.64 | 36.45 | 39.41 | a | 43.52 | 46.53 | 50.77 | 48.00 | 44.83 | 37.87 | 38.93 | 29.90 | 40.09 | ||||||||||||
1988 | 30.74 | 31.48 | 32.94 | 37.93 | 42.71 | 44.97 | 48.32 | 48.52 | 43.40 | 43.32 | 36.07 | 30.35 | 39.23 | |||||||||||||
1989 | 30.48 | 24.54 | ----- | z | 37.48 | a | 41.06 | 46.77 | 47.71 | 49.19 | 42.47 | 37.87 | 36.59 | a | 31.68 | 38.71 | a | |||||||||
1990 | 32.42 | 28.00 | 33.52 | 38.59 | a | 42.48 | d | 46.37 | 50.54 | c | 49.92 | g | 47.47 | 38.39 | 33.50 | p | 24.84 | 38.26 | b | |||||||
1991 | 27.77 | 35.36 | 32.35 | 35.67 | 42.03 | a | 46.43 | 50.35 | 50.65 | 43.00 | 35.32 | 38.34 | a | 35.07 | a | 39.36 | ||||||||||
1992 | 34.20 | a | 36.24 | 34.88 | e | 40.17 | 41.74 | 47.40 | 51.32 | 47.50 | a | 42.10 | a | 39.27 | a | 35.07 | 29.81 | 39.98 | ||||||||
1993 | 27.65 | 27.86 | 34.97 | b | 38.66 | a | 46.17 | b | 48.07 | 50.71 | c | 48.97 | a | 40.21 | f | 37.71 | j | 27.21 | b | 29.75 | c | 38.00 | b | |||
1994 | 33.06 | ----- | z | ----- | z | 39.03 | a | ----- | z | 44.00 | 48.39 | 47.42 | 45.00 | b | 35.07 | a | 31.28 | a | 30.13 | a | 39.26 | c | ||||
1995 | 35.50 | m | ----- | z | ----- | z | 34.83 | a | 42.36 | c | 46.03 | 51.65 | 45.70 | a | 47.13 | 39.43 | a | 36.45 | h | 37.36 | f | 43.88 | e | |||
1996 | 33.34 | b | 34.79 | 37.52 | 41.30 | 42.38 | b | 44.83 | 49.90 | 47.06 | 41.90 | a | 38.79 | b | 32.24 | a | 30.77 | 39.57 | ||||||||
1997 | 30.77 | 29.57 | 32.61 | 35.17 | 43.90 | 44.80 | 47.13 | a | 48.23 | 44.50 | 36.58 | 35.00 | 28.35 | 38.05 | ||||||||||||
1998 | 30.74 | 35.11 | 35.32 | 37.03 | 44.55 | 49.40 | 53.52 | 48.23 | 45.16 | k | 39.71 | 37.77 | 29.81 | 40.11 | a | |||||||||||
1999 | 32.42 | 33.00 | 32.23 | 35.20 | 38.94 | 46.67 | 47.29 | 50.10 | a | 39.97 | a | 35.79 | g | 38.40 | e | 33.13 | 38.85 | a | ||||||||
2000 | 30.48 | d | 33.68 | d | 31.88 | e | 36.89 | b | 41.81 | e | 46.48 | c | 47.79 | b | 44.14 | b | 42.57 | b | 38.03 | b | 30.68 | h | 34.13 | a | 38.90 | a |
2001 | 31.56 | f | 27.54 | b | 34.00 | b | 35.56 | c | 40.13 | h | 44.37 | k | 47.73 | a | 49.63 | d | 44.26 | c | 37.88 | e | 36.81 | d | 31.93 | d | 38.37 | c |
2002 | 32.07 | d | 31.00 | e | 32.43 | c | 35.60 | e | 41.40 | f | 46.96 | e | 48.64 | i | 48.00 | t | 39.00 | i | 37.21 | g | 33.00 | m | 33.23 | e | 35.22 | f |
2003 | 35.52 | d | 30.48 | c | 36.19 | j | 37.79 | b | 41.19 | j | 45.71 | f | 46.05 | j | 46.13 | p | ----- | z | 45.09 | t | ----- | z | 33.04 | f | 34.59 | i |
2004 | 32.77 | a | 35.72 | 36.48 | 40.10 | i | 44.45 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.36 | h | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.91 | 31.89 | 33.59 | 36.71 | 41.42 | 46.09 | 49.03 | 48.41 | 44.35 | 38.92 | 34.74 | 31.51 | 39.06 | |||||||||||||
S.D. | 4.35 | 3.11 | 2.19 | 2.13 | 2.32 | 2.20 | 2.53 | 2.66 | 2.31 | 2.70 | 3.25 | 3.13 | 1.27 | |||||||||||||
SKEW | -1.16 | -0.27 | 0.26 | 0.28 | -0.75 | 0.29 | 1.13 | 0.39 | 0.07 | -0.50 | -0.85 | -0.28 | -0.27 | |||||||||||||
MAX | 38.19 | 39.14 | 38.23 | 42.13 | 46.17 | 53.30 | 61.00 | 57.83 | 50.00 | 45.06 | 40.54 | 38.29 | 41.41 | |||||||||||||
MIN | 15.19 | 24.28 | 29.39 | 32.23 | 33.58 | 41.77 | 42.35 | 42.61 | 38.03 | 28.58 | 25.30 | 23.82 | 36.64 | |||||||||||||
YRS | 85 | 83 | 82 | 86 | 83 | 82 | 79 | 79 | 80 | 78 | 79 | 87 | 44 |