YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.26 | d | 27.26 | k |
1902 | 28.36 | b | 28.57 | e | 30.76 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.15 | c | 44.38 | a | 34.98 | c | 29.78 | b | 36.04 | f |
1903 | 34.85 | u | 25.50 | d | 32.91 | c | 41.46 | d | 47.80 | d | 52.60 | 58.53 | 57.43 | a | 50.74 | c | ----- | z | 38.63 | 28.29 | b | 43.39 | b | |||
1904 | 25.20 | f | 34.71 | c | 39.54 | d | ----- | z | ----- | z | 55.11 | b | 57.08 | a | 55.95 | 51.20 | 41.48 | b | 33.52 | c | 28.55 | 44.13 | c | |||
1905 | 29.52 | 28.13 | b | 34.87 | a | 37.98 | a | 47.97 | 56.02 | 58.75 | a | ----- | z | ----- | z | 42.83 | a | 34.43 | 22.67 | a | 39.32 | b | ||||
1906 | 26.39 | 30.20 | 35.87 | 41.20 | 49.13 | 58.65 | 57.08 | a | 54.77 | 51.23 | 42.74 | 33.57 | 33.35 | 42.85 | ||||||||||||
1907 | 31.61 | 34.23 | 40.45 | 43.05 | 45.05 | a | 54.77 | 58.65 | d | 57.53 | b | 53.57 | 42.82 | 30.68 | 29.63 | 43.50 | ||||||||||
1908 | 29.03 | a | 30.97 | 39.53 | 42.37 | 48.26 | 58.12 | 57.23 | a | 56.53 | ----- | z | ----- | z | ----- | z | ----- | z | 45.25 | d | ||||||
1909 | ----- | z | ----- | z | 32.08 | 42.40 | 46.98 | 57.67 | ----- | z | ----- | z | 50.17 | u | 47.02 | 38.38 | 24.02 | 41.22 | e | |||||||
1910 | 33.74 | 33.74 | a | 47.82 | 45.88 | 56.71 | 60.13 | 61.73 | 58.61 | 55.82 | 45.75 | i | 40.70 | 34.28 | a | 48.11 | a | |||||||||
1911 | 37.19 | 32.07 | 41.10 | 43.38 | 52.10 | 59.16 | b | 60.38 | a | 62.74 | 58.03 | a | 46.53 | 34.95 | 25.23 | 46.07 | ||||||||||
1912 | 30.79 | 30.71 | 38.02 | b | 39.88 | 51.87 | a | 57.33 | a | 60.16 | 58.53 | a | 52.52 | 48.09 | b | 37.00 | a | 28.65 | a | 44.46 | ||||||
1913 | 32.88 | f | 28.06 | b | 33.35 | a | 43.18 | 51.61 | 55.91 | a | 59.63 | 57.52 | 49.98 | a | 48.38 | a | 38.70 | 22.89 | c | 44.47 | a | |||||
1914 | 36.60 | a | 31.38 | 33.80 | a | 39.53 | 50.73 | 60.00 | a | 57.92 | 57.58 | 55.13 | 47.65 | 43.68 | b | 22.57 | a | 44.71 | ||||||||
1915 | 20.36 | c | 25.26 | a | 28.75 | a | 42.68 | 48.23 | c | 60.17 | 60.73 | a | 57.40 | 53.47 | 48.08 | 39.37 | 30.32 | 42.90 | ||||||||
1916 | 30.23 | a | 36.95 | a | 42.68 | a | 42.27 | 52.23 | a | 60.52 | 62.23 | 60.57 | a | 57.25 | 47.71 | 37.72 | 28.21 | 46.55 | ||||||||
1917 | 30.14 | b | 32.54 | 34.08 | 42.23 | 44.81 | 59.08 | 60.85 | 58.73 | 54.43 | 48.05 | 41.52 | 37.68 | 45.34 | ||||||||||||
1918 | 25.55 | 35.77 | 38.21 | 41.07 | 51.05 | 59.45 | 60.55 | 57.81 | 56.00 | a | 47.37 | a | 32.16 | a | 28.82 | a | 44.48 | |||||||||
1919 | 28.48 | d | 28.28 | a | 35.47 | b | 45.28 | g | 49.61 | 55.40 | a | 58.65 | 59.87 | 55.53 | a | 45.91 | c | 37.07 | a | 36.72 | a | 44.63 | a | |||
1920 | 32.71 | b | 35.84 | a | 34.67 | a | 38.82 | 51.42 | a | 53.43 | a | 57.15 | a | 56.73 | 54.80 | b | 47.00 | b | 37.96 | b | 29.18 | a | 44.14 | |||
1921 | 35.37 | d | 32.98 | a | 43.00 | d | 42.00 | c | 51.30 | a | 56.71 | b | 59.78 | a | 58.85 | 57.82 | 48.67 | b | 43.17 | d | 38.10 | 47.31 | ||||
1922 | 31.02 | 36.00 | b | 38.32 | a | 43.04 | c | 52.02 | d | 60.83 | 60.73 | a | 61.79 | b | 55.48 | c | 47.12 | e | 35.15 | d | 35.07 | b | 46.38 | |||
1923 | 34.59 | c | 32.36 | f | 33.98 | e | 43.16 | e | ----- | z | 55.40 | a | 57.40 | b | 55.89 | 50.37 | d | 47.96 | d | 35.39 | c | 30.02 | e | 44.41 | b | |
1924 | 29.40 | e | 35.54 | d | 32.72 | d | 40.46 | e | 50.20 | c | 63.52 | 60.34 | 61.42 | a | 55.70 | b | 48.50 | f | 42.70 | e | 34.52 | g | 47.20 | b | ||
1925 | 30.05 | c | 35.73 | d | 40.74 | f | 45.69 | c | 53.06 | d | 54.14 | a | 61.68 | 57.82 | a | 56.58 | 49.46 | e | 34.62 | d | 30.58 | g | 47.88 | b | ||
1926 | 25.25 | e | 37.81 | d | 37.00 | d | 40.42 | d | 50.31 | d | 58.26 | a | 59.03 | 59.03 | 57.67 | 49.70 | f | 37.81 | c | 28.96 | e | 44.69 | a | |||
1927 | 37.50 | e | 36.94 | d | 38.06 | e | 44.12 | e | 55.81 | e | 57.28 | 59.32 | 56.81 | d | 52.56 | d | 45.54 | f | 41.48 | d | 27.30 | d | 46.11 | a | ||
1928 | 34.62 | e | 31.41 | f | 40.19 | d | 45.00 | g | 54.17 | d | 64.60 | 61.05 | 55.71 | 51.90 | f | 46.78 | d | 33.90 | e | 30.25 | e | 46.81 | c | |||
1929 | 27.06 | d | 26.27 | d | 31.50 | e | 42.60 | e | 48.22 | b | 59.52 | a | 58.02 | a | 55.87 | 53.12 | b | 42.19 | d | 30.73 | d | 31.52 | e | 42.22 | ||
1930 | 24.88 | f | 36.21 | d | 32.98 | e | 49.32 | e | 49.65 | d | 59.62 | 59.68 | 59.44 | 56.48 | c | 48.02 | d | 34.16 | e | 27.83 | d | 46.67 | a | |||
1931 | 30.09 | d | 31.69 | d | 35.02 | e | 42.28 | e | 50.66 | f | 60.19 | d | 61.00 | e | 57.96 | e | 57.94 | e | 50.06 | d | 37.98 | e | 30.17 | e | 44.94 | a |
1932 | 27.62 | e | 37.02 | e | 33.91 | d | 45.38 | d | 50.67 | e | 58.71 | d | 60.50 | f | 59.81 | d | 53.28 | e | 46.13 | e | 39.90 | e | 30.52 | e | 43.91 | a |
1933 | 30.40 | e | 28.70 | e | 41.24 | f | 39.80 | e | 49.24 | d | 58.69 | d | 61.34 | f | 59.87 | e | 58.96 | e | 48.96 | e | 40.67 | d | 37.82 | f | 46.14 | c |
1934 | 31.50 | e | 35.02 | d | 40.40 | f | 45.80 | e | 53.96 | e | 60.12 | e | 61.86 | f | 60.78 | d | 56.19 | f | 51.39 | d | 38.78 | e | 35.54 | g | 47.17 | d |
1935 | 36.28 | h | 30.35 | e | 38.94 | e | 43.04 | d | 45.90 | g | 57.83 | f | 59.52 | e | 58.57 | d | 53.12 | f | 49.80 | d | 37.85 | d | 31.54 | f | 45.44 | e |
1936 | 29.40 | e | 31.00 | f | 37.31 | e | 43.48 | d | 51.10 | f | 60.85 | d | 60.46 | f | 58.88 | e | 53.82 | e | 44.76 | d | 36.80 | e | 32.08 | e | 44.15 | c |
1937 | 27.71 | e | 32.66 | f | 33.73 | e | 43.81 | d | 51.62 | e | 59.10 | d | 60.67 | e | 60.71 | e | 56.57 | g | 48.75 | e | 39.79 | d | 33.81 | e | 45.97 | b |
1938 | 31.46 | f | 35.25 | f | 37.85 | d | 43.87 | d | 50.71 | e | 59.87 | d | 58.28 | f | 59.76 | d | 53.00 | e | 49.06 | e | 37.81 | f | 34.58 | e | 48.59 | d |
1939 | 29.16 | f | 25.57 | g | 37.96 | d | 44.85 | f | 52.42 | e | 59.88 | d | 59.78 | f | 57.83 | e | 55.52 | e | 45.44 | e | 36.84 | e | 36.78 | f | 49.41 | e |
1940 | 30.48 | e | 31.32 | g | 38.21 | j | 43.52 | e | 51.27 | e | 57.54 | g | 60.27 | e | 57.91 | d | 55.98 | f | 47.50 | d | 37.15 | g | 36.84 | f | 48.49 | f |
1941 | 29.68 | f | 34.45 | f | 33.66 | f | 39.84 | e | 51.68 | f | 54.92 | e | 57.98 | e | 57.35 | e | 54.50 | e | 46.78 | d | 38.11 | g | 34.40 | f | 51.89 | f |
1942 | 34.13 | h | 30.09 | f | 33.60 | g | 42.86 | e | 51.28 | f | 59.38 | d | 59.69 | e | 58.69 | e | 54.06 | e | 44.62 | f | 43.19 | f | 34.56 | e | 51.54 | f |
1943 | 32.00 | f | 35.07 | e | 38.35 | d | 48.54 | e | 53.80 | f | 57.85 | d | 58.78 | h | 61.64 | f | 54.42 | e | 45.81 | e | 38.50 | h | 31.33 | j | 46.67 | f |
1944 | 31.02 | a | 32.24 | b | 34.74 | b | 41.52 | 49.73 | a | 58.88 | 59.74 | 59.83 | b | 54.88 | a | 47.77 | a | 35.80 | 32.89 | 44.92 | ||||||
1945 | 30.93 | a | 35.35 | a | 36.75 | a | 42.40 | 54.11 | 58.10 | 60.23 | 59.97 | 56.23 | 47.65 | 41.27 | 30.10 | 46.09 | ||||||||||
1946 | 28.00 | a | 33.09 | 37.53 | 48.67 | 50.60 | 60.98 | 61.19 | e | 60.04 | d | 56.73 | f | ----- | z | 38.97 | k | 36.12 | f | 47.51 | d | |||||
1947 | 27.52 | e | 34.59 | e | 37.15 | e | 43.69 | d | 52.69 | e | 58.77 | f | 62.27 | e | 58.58 | f | ----- | z | ----- | z | ----- | z | ----- | z | 42.99 | f |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | 55.52 | c | 62.75 | 63.48 | a | 63.15 | 58.65 | 47.74 | 34.48 | 34.60 | 52.55 | d | ||||||
1949 | 24.53 | 30.89 | 39.03 | 43.43 | 54.29 | 61.02 | 60.73 | 59.63 | 56.27 | 45.71 | 43.97 | 30.65 | a | 45.85 | ||||||||||||
1950 | 33.70 | a | 37.05 | 39.32 | 47.18 | 52.89 | 61.63 | 58.82 | 60.35 | 55.50 | 54.58 | 43.08 | 37.26 | 48.45 | ||||||||||||
1951 | 31.55 | 33.43 | 35.74 | 42.17 | 53.97 | 62.63 | 64.79 | 62.29 | 60.18 | 49.90 | 36.98 | a | 31.77 | 47.12 | ||||||||||||
1952 | 35.47 | 30.11 | b | 31.21 | 43.62 | a | 51.94 | 59.80 | 58.21 | 61.15 | 55.85 | ----- | z | ----- | z | ----- | z | 47.48 | c | |||||||
1953 | ----- | z | 23.69 | t | 39.25 | a | 43.12 | 48.06 | 63.30 | 62.00 | 58.23 | 55.37 | 47.32 | 38.63 | 26.73 | 48.20 | b | |||||||||
1954 | 32.47 | 36.25 | 36.68 | 48.27 | 50.75 | a | 59.18 | 59.98 | 58.48 | 55.53 | 49.17 | a | 39.20 | 32.31 | 46.52 | |||||||||||
1955 | 26.28 | a | 27.45 | 36.34 | 43.17 | 50.13 | 57.23 | 57.95 | 57.37 | a | 56.03 | 46.92 | 39.38 | 35.65 | 44.49 | |||||||||||
1956 | 34.47 | 26.55 | 38.69 | 42.05 | 53.84 | 59.88 | 58.21 | 56.98 | 56.10 | 47.58 | 33.83 | 29.73 | 44.83 | |||||||||||||
1957 | 33.48 | 39.48 | 36.06 | 43.12 | a | 48.55 | 59.32 | 61.79 | 58.45 | 52.95 | 43.88 | b | 32.03 | 33.32 | a | 45.20 | ||||||||||
1958 | 25.13 | 30.93 | 31.16 | 41.83 | 52.60 | 62.07 | 62.03 | 59.50 | 54.82 | 43.85 | 36.98 | 35.15 | 44.67 | |||||||||||||
1959 | 31.24 | 31.96 | a | 33.81 | 43.15 | 51.87 | 59.78 | 58.19 | 57.79 | 55.32 | 46.97 | 36.45 | 30.37 | 44.74 | ||||||||||||
1960 | 26.19 | 25.00 | 36.24 | f | 44.32 | 50.24 | 60.29 | a | 58.06 | 59.31 | 54.77 | 45.16 | 39.82 | 29.35 | 44.77 | a | ||||||||||
1961 | 29.44 | 31.54 | 37.02 | 44.95 | 53.52 | 58.50 | 60.50 | b | 58.75 | a | 53.47 | 46.07 | a | 33.27 | b | 30.66 | 44.81 | |||||||||
1962 | 27.65 | 35.65 | a | 30.52 | 44.68 | 51.45 | 57.14 | a | 58.08 | 59.73 | 53.95 | 46.19 | 38.77 | 32.69 | 44.71 | |||||||||||
1963 | 27.90 | 32.27 | 37.43 | a | 45.37 | 53.08 | 57.73 | 60.08 | 56.50 | 53.28 | 45.79 | 37.34 | a | 30.05 | 44.74 | |||||||||||
1964 | 26.68 | 25.07 | 33.63 | a | 43.30 | 47.05 | 53.80 | 56.67 | a | 56.83 | e | 49.28 | 43.44 | v | 34.37 | g | 29.73 | a | 42.20 | b | ||||||
1965 | 31.35 | a | 24.50 | 31.05 | a | 42.03 | 46.98 | 54.15 | 58.42 | 56.65 | 52.17 | 44.69 | 37.28 | 31.17 | a | 42.54 | ||||||||||
1966 | 24.89 | 19.71 | 30.07 | a | 40.55 | 50.26 | 54.55 | 57.95 | 55.98 | 52.26 | c | 44.97 | 38.52 | g | 29.07 | c | 41.84 | a | ||||||||
1967 | 28.24 | 31.79 | 40.94 | 46.45 | 47.66 | 56.88 | 58.96 | c | 55.70 | f | 50.91 | a | 48.84 | o | 37.09 | g | 25.64 | c | 43.05 | c | ||||||
1968 | 29.76 | d | 31.98 | 32.29 | 38.58 | 50.05 | 57.36 | a | 56.94 | 55.79 | 50.64 | b | 46.52 | 34.05 | 27.23 | c | 42.60 | |||||||||
1969 | 34.00 | a | 31.48 | b | 29.29 | b | 44.69 | d | 49.13 | 55.67 | 61.60 | 61.68 | 55.30 | 40.97 | o | 30.38 | e | 27.32 | k | 45.32 | b | |||||
1970 | 30.64 | q | 35.57 | e | 33.68 | a | 43.35 | d | 52.92 | k | 57.83 | 61.60 | a | ----- | z | ----- | z | 40.15 | a | 37.15 | 35.08 | 43.05 | d | |||
1971 | 31.94 | 32.54 | a | 41.11 | 43.27 | b | 52.52 | 61.41 | b | 62.94 | ----- | z | 57.07 | 46.27 | a | 39.50 | 32.47 | 45.55 | a | |||||||
1972 | 32.29 | 35.33 | 45.56 | 48.70 | 53.77 | 60.62 | 61.95 | 58.05 | 54.55 | a | 49.13 | a | 33.35 | 32.82 | 47.18 | |||||||||||
1973 | 28.34 | 29.43 | 32.27 | ----- | z | ----- | z | 59.90 | 61.10 | 60.53 | 57.78 | 50.68 | a | 41.85 | c | ----- | z | 46.88 | c | |||||||
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 | 33.97 | 34.68 | 34.32 | j | ||
1980 | 34.13 | 34.66 | 35.71 | 42.85 | 50.28 | a | 67.00 | a | 64.52 | 59.97 | 56.12 | 43.97 | 37.53 | a | 40.53 | 47.27 | ||||||||||
1981 | 33.24 | 36.07 | 35.16 | 47.80 | 51.87 | 61.81 | a | 61.97 | 57.60 | 54.82 | 47.60 | 42.77 | b | 36.26 | 47.25 | |||||||||||
1982 | 33.40 | f | 34.69 | g | 40.58 | e | 45.91 | c | 51.24 | d | 61.32 | b | 61.92 | a | 60.16 | b | 56.33 | d | 46.54 | d | 36.25 | b | 30.90 | f | 51.14 | c |
1983 | 31.74 | f | 31.79 | b | 35.89 | d | 38.23 | d | 50.30 | a | 58.93 | 61.58 | 60.61 | 58.03 | 47.90 | 36.87 | 32.48 | 46.60 | a | |||||||
1984 | 32.03 | 32.69 | 38.24 | 42.77 | 56.29 | 57.98 | 59.85 | 57.24 | 55.53 | 41.97 | 37.52 | 34.24 | 45.53 | |||||||||||||
1985 | 27.43 | a | 31.50 | a | 37.65 | 46.90 | 53.45 | 60.80 | 62.24 | 60.95 | 54.12 | 47.05 | 39.25 | 35.85 | 46.43 | |||||||||||
1986 | 37.55 | 35.20 | 39.74 | 48.20 | 52.87 | 58.35 | 60.47 | 59.44 | 54.98 | 45.74 | 37.36 | a | 30.39 | 46.69 | ||||||||||||
1987 | 32.08 | 31.93 | 34.55 | 43.47 | 48.65 | 55.30 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.99 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 30.37 | 32.14 | 36.34 | 43.34 | 51.05 | 58.77 | 60.01 | 58.70 | 54.71 | 46.76 | 37.34 | 31.13 | 45.24 | |||||||||||||
S.D. | 3.51 | 3.87 | 3.72 | 2.57 | 2.51 | 2.71 | 1.85 | 1.84 | 2.35 | 2.48 | 3.26 | 3.82 | 1.56 | |||||||||||||
SKEW | -0.06 | -0.72 | 0.38 | 0.33 | -0.12 | 0.06 | 0.24 | 0.20 | -0.26 | -0.11 | -0.02 | -0.09 | -0.14 | |||||||||||||
MAX | 37.55 | 39.48 | 47.82 | 49.32 | 56.71 | 67.00 | 64.79 | 63.15 | 60.18 | 54.58 | 43.97 | 40.53 | 48.45 | |||||||||||||
MIN | 20.36 | 19.71 | 28.75 | 37.98 | 44.81 | 52.60 | 56.67 | 54.77 | 49.28 | 40.15 | 30.38 | 22.57 | 42.22 | |||||||||||||
YRS | 64 | 67 | 71 | 73 | 69 | 76 | 70 | 71 | 68 | 66 | 68 | 65 | 35 |