YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.74 | 41.38 | a | 36.04 | c | 41.39 | i | |
1908 | 34.97 | 33.59 | 34.32 | 36.47 | 39.74 | 43.38 | a | 51.65 | 51.07 | b | 44.62 | a | 41.23 | 41.29 | b | 34.12 | e | 40.54 | ||||||||
1909 | 27.88 | f | 35.82 | 35.65 | 36.50 | 41.32 | 46.63 | 49.30 | a | 48.45 | 47.60 | 43.47 | a | 40.03 | 31.65 | 41.49 | a | |||||||||
1910 | 31.90 | 29.86 | 37.23 | a | 38.63 | 43.13 | 45.53 | 49.10 | b | 48.74 | 46.20 | 45.84 | 38.43 | 36.13 | 40.89 | |||||||||||
1911 | 31.90 | 31.32 | 32.74 | 32.70 | 41.35 | 45.47 | 49.79 | c | 48.39 | 45.25 | b | 41.48 | 37.23 | 35.19 | 39.40 | |||||||||||
1912 | 35.10 | 34.97 | 32.06 | 37.57 | 44.17 | b | 47.13 | 50.74 | 51.00 | 46.20 | 38.81 | 38.23 | 34.74 | 40.89 | ||||||||||||
1913 | 30.03 | 30.89 | 32.48 | 36.60 | 41.70 | a | 47.07 | 49.45 | 51.06 | 45.97 | 41.06 | 38.47 | 35.61 | 40.03 | ||||||||||||
1914 | 36.74 | 35.89 | a | 39.19 | 40.13 | 44.19 | 48.43 | 50.42 | 50.81 | 48.48 | a | 46.61 | 40.72 | a | 32.77 | 42.87 | ||||||||||
1915 | 33.26 | 37.43 | 39.90 | 41.43 | 46.10 | 48.20 | 53.63 | a | 54.00 | 48.50 | 46.10 | 36.93 | 35.71 | 43.43 | ||||||||||||
1916 | 27.16 | 32.83 | 37.00 | 39.60 | 41.39 | 51.53 | 51.19 | 51.65 | 47.80 | 38.55 | 35.17 | 33.39 | 40.60 | |||||||||||||
1917 | 32.48 | 35.04 | 33.03 | a | 39.50 | 43.84 | 46.20 | 50.32 | 51.23 | 50.17 | 44.48 | 42.67 | 39.23 | 42.35 | ||||||||||||
1918 | 38.10 | 34.14 | 36.23 | 37.50 | 42.45 | 48.20 | 51.52 | 51.87 | 48.14 | a | 46.26 | 38.57 | 35.06 | 42.34 | ||||||||||||
1919 | 34.76 | b | 35.18 | 23.16 | l | 39.97 | 41.20 | a | 44.97 | 48.90 | 50.68 | 47.80 | 41.19 | 39.37 | 31.70 | a | 41.43 | a | ||||||||
1920 | 34.71 | 33.48 | 34.94 | 36.07 | 39.13 | 47.23 | 51.74 | 51.35 | 49.33 | 43.26 | 38.67 | 37.48 | 41.45 | |||||||||||||
1921 | 34.42 | 36.75 | 36.94 | 37.53 | 41.39 | 50.33 | 49.10 | 51.13 | 46.73 | 44.35 | 39.90 | 33.23 | 41.82 | |||||||||||||
1922 | 30.61 | 32.04 | 34.03 | 36.93 | 42.68 | 49.43 | 49.68 | 52.81 | 49.20 | 46.06 | 35.93 | 33.45 | 41.07 | |||||||||||||
1923 | 34.90 | 29.67 | a | 33.42 | 40.27 | 44.77 | 48.93 | 54.41 | b | 58.34 | b | 48.36 | e | 44.10 | 40.50 | 37.00 | 42.89 | |||||||||
1924 | 34.68 | 39.28 | 35.00 | a | 38.13 | 44.32 | 47.83 | 50.23 | 52.65 | 46.87 | 45.35 | 37.60 | 32.29 | 42.02 | ||||||||||||
1925 | 35.97 | 38.25 | 36.94 | 40.73 | 46.03 | 47.63 | 51.32 | 50.39 | 48.79 | a | 41.52 | 39.03 | 39.87 | 43.04 | ||||||||||||
1926 | 36.30 | a | 39.75 | 38.50 | a | 42.43 | 45.94 | 49.27 | 51.90 | 52.21 | b | 46.57 | 45.81 | 42.00 | 36.10 | 43.90 | ||||||||||
1927 | 35.48 | 33.68 | 34.37 | a | 37.97 | 42.19 | 50.00 | 52.74 | l | 51.87 | 49.47 | 44.68 | 40.00 | 31.33 | a | 41.00 | a | |||||||||
1928 | 35.35 | 35.34 | 38.47 | a | 39.93 | 44.74 | ----- | z | 52.70 | a | 51.03 | 47.77 | 44.90 | 39.87 | 34.35 | 42.22 | a | |||||||||
1929 | 29.16 | 28.04 | a | 37.29 | 37.73 | 43.29 | 49.77 | 50.74 | 51.90 | 46.67 | 45.68 | 39.38 | q | 38.13 | 41.67 | a | ||||||||||
1930 | 26.68 | 35.75 | 36.77 | 42.17 | 42.39 | 47.37 | 50.29 | 52.37 | a | 50.07 | 41.68 | 38.62 | a | 35.13 | 41.61 | |||||||||||
1931 | 38.23 | a | 35.33 | a | 38.45 | 39.83 | 45.26 | 49.10 | 51.03 | 50.71 | 50.57 | 43.32 | 35.73 | 34.07 | a | 42.64 | ||||||||||
1932 | 33.29 | 34.93 | 38.52 | 41.00 | 43.81 | 48.00 | 49.77 | 52.32 | 46.47 | 45.57 | a | 42.20 | 32.23 | 42.34 | ||||||||||||
1933 | 33.65 | 30.04 | 35.77 | a | 37.03 | 42.94 | 47.00 | 49.23 | 52.39 | 48.10 | a | 43.77 | 41.80 | 38.58 | 41.69 | |||||||||||
1934 | 38.39 | 37.50 | 39.71 | 43.97 | 47.03 | 48.17 | 51.42 | 52.90 | 49.00 | 44.81 | 42.37 | 37.07 | a | 44.36 | ||||||||||||
1935 | 33.39 | 34.61 | 34.16 | 38.00 | 42.65 | 49.83 | 51.77 | 50.71 | 49.77 | 43.26 | 36.57 | 38.10 | 41.90 | |||||||||||||
1936 | 37.39 | 30.45 | 36.00 | 43.17 | 47.29 | 52.27 | 52.58 | 54.81 | 48.47 | 47.26 | 38.20 | 39.58 | 43.95 | |||||||||||||
1937 | 26.90 | 33.86 | 39.35 | 39.86 | a | 44.32 | 50.33 | 52.13 | 51.97 | 50.17 | 46.35 | 41.93 | 38.45 | 42.97 | ||||||||||||
1938 | 35.48 | 34.61 | 36.29 | 40.87 | 44.26 | 48.67 | 51.74 | 50.10 | 51.57 | 44.13 | 37.47 | 37.52 | 42.72 | |||||||||||||
1939 | 39.13 | 33.79 | 37.06 | 41.63 | 44.39 | 49.63 | 52.45 | 51.81 | 48.40 | 45.45 | 42.17 | a | 40.94 | 43.90 | ||||||||||||
1940 | 38.10 | 40.04 | a | 40.42 | 44.03 | 47.00 | 49.87 | 54.03 | 53.65 | 53.53 | 49.55 | 38.23 | 40.19 | 45.72 | ||||||||||||
1941 | 37.45 | 38.00 | 41.40 | a | 43.60 | 47.48 | 51.67 | 56.16 | 55.03 | 50.80 | 47.61 | 41.37 | 38.23 | a | 45.73 | |||||||||||
1942 | 33.39 | 35.96 | 36.35 | 42.67 | 47.03 | 50.00 | 56.06 | 55.61 | 49.67 | 46.10 | 37.93 | 39.13 | 44.16 | |||||||||||||
1943 | 29.97 | a | 35.11 | 35.71 | 42.33 | 44.26 | 49.10 | 52.77 | 53.00 | 50.43 | 46.16 | 40.03 | 35.03 | a | 42.83 | |||||||||||
1944 | 34.43 | a | 36.24 | 35.16 | 41.53 | 44.48 | 49.70 | 53.13 | 53.39 | 51.30 | 47.61 | 40.87 | 34.35 | 43.52 | ||||||||||||
1945 | 37.35 | 37.04 | 37.61 | 40.00 | 47.94 | 48.80 | 51.81 | 51.48 | 48.00 | 45.74 | 39.83 | 36.16 | 43.48 | |||||||||||||
1946 | 36.26 | 36.75 | 37.33 | a | 40.80 | 47.03 | 49.77 | 53.58 | 52.16 | 49.03 | a | 42.52 | 35.53 | 36.52 | 43.11 | |||||||||||
1947 | 32.94 | 37.21 | 39.00 | a | 41.57 | 47.16 | 49.93 | 51.68 | 51.55 | 49.37 | ----- | z | ----- | z | ----- | z | 44.49 | c | ||||||||
1948 | 37.06 | 35.46 | a | 35.87 | 39.10 | 46.03 | a | 53.13 | 52.87 | 54.52 | 48.73 | 44.19 | 38.73 | 32.84 | 43.21 | |||||||||||
1949 | 26.58 | 31.86 | 38.48 | 41.43 | 46.81 | 47.60 | 51.06 | 53.74 | 50.41 | c | 41.77 | 44.17 | 35.94 | 42.49 | ||||||||||||
1950 | 24.27 | a | 34.25 | 37.39 | 38.30 | 42.16 | 50.57 | 52.65 | 53.55 | 49.07 | 45.71 | 40.23 | 42.29 | 42.54 | ||||||||||||
1951 | 34.65 | 35.32 | 34.35 | 39.10 | 45.00 | 49.77 | 53.32 | 52.03 | 48.90 | 46.06 | 40.10 | 33.77 | 42.70 | |||||||||||||
1952 | 33.35 | 37.10 | 37.39 | 39.30 | 45.48 | b | 48.50 | 52.29 | 54.71 | 50.67 | 46.61 | 37.53 | 37.71 | 43.39 | ||||||||||||
1953 | 41.90 | 36.68 | 37.97 | 41.00 | 45.26 | 49.20 | 53.10 | 54.32 | 50.40 | 45.77 | 43.23 | 38.74 | 44.80 | |||||||||||||
1954 | 34.21 | b | 36.93 | 34.45 | 39.63 | 44.77 | 48.47 | 50.81 | 53.26 | 51.57 | 43.87 | 45.67 | 37.61 | 43.44 | ||||||||||||
1955 | 36.16 | 33.93 | 33.84 | 36.43 | 42.87 | 50.07 | 51.84 | 50.68 | 49.10 | 45.35 | 35.30 | 35.29 | 41.74 | |||||||||||||
1956 | 35.23 | 32.48 | 35.29 | 39.63 | 46.45 | 50.07 | 53.03 | 53.26 | 48.97 | 44.26 | 37.27 | 36.94 | 42.74 | |||||||||||||
1957 | 30.45 | 34.18 | 38.26 | 42.47 | 48.84 | 51.90 | a | 52.61 | 53.06 | 52.33 | 45.03 | 38.17 | 39.61 | 43.91 | ||||||||||||
1958 | 38.81 | 42.36 | 37.13 | 40.90 | 48.97 | 55.50 | 56.48 | 54.74 | 50.10 | 45.55 | 40.23 | 41.61 | 46.03 | |||||||||||||
1959 | 36.23 | a | 36.43 | 37.68 | 41.93 | 43.71 | 51.30 | 52.94 | 51.81 | 49.73 | 45.10 | 38.18 | b | 36.65 | 43.47 | |||||||||||
1960 | 35.13 | 36.59 | 37.68 | 41.87 | 45.84 | 49.83 | 52.10 | 53.97 | 49.33 | 46.94 | 39.80 | 36.45 | 43.79 | |||||||||||||
1961 | 38.35 | 40.89 | 39.10 | 41.70 | 45.97 | 51.83 | 54.58 | 55.26 | 48.53 | 42.94 | 37.17 | 37.10 | 44.45 | |||||||||||||
1962 | 34.71 | 37.75 | 35.61 | 43.03 | 44.68 | 48.43 | 50.71 | 53.90 | 50.30 | 47.16 | 42.43 | 39.58 | 44.03 | |||||||||||||
1963 | 32.13 | 40.89 | 36.55 | 42.30 | 45.10 | 50.80 | 54.16 | 55.19 | 53.59 | a | 48.71 | 42.00 | 38.65 | 45.01 | ||||||||||||
1964 | 37.45 | 34.31 | 37.55 | 38.43 | 42.13 | 50.23 | 53.45 | 53.06 | 48.63 | 44.73 | a | 38.45 | a | 33.42 | 42.65 | |||||||||||
1965 | 36.52 | 37.25 | 35.26 | 41.50 | 43.10 | 48.80 | 53.55 | 55.19 | 48.20 | 46.87 | 43.80 | 36.55 | 43.88 | |||||||||||||
1966 | 37.32 | 36.50 | 37.00 | ----- | z | 43.94 | 49.03 | 53.29 | 53.06 | 52.07 | 44.13 | 41.57 | 41.10 | 44.46 | a | |||||||||||
1967 | 37.94 | 37.14 | 36.42 | 36.93 | 44.74 | 51.57 | 53.87 | 54.68 | 51.87 | 47.45 | 41.69 | a | 36.94 | 44.27 | ||||||||||||
1968 | 35.00 | 36.31 | 40.23 | a | 38.73 | 45.00 | 48.93 | 53.10 | 51.03 | 49.83 | 43.97 | 41.17 | 32.23 | 42.96 | ||||||||||||
1969 | 28.38 | b | 33.56 | a | 35.81 | 38.93 | 44.90 | 52.90 | 50.57 | a | 50.84 | 48.13 | 41.27 | a | 38.47 | 38.52 | 41.86 | |||||||||
1970 | 33.19 | 36.56 | a | 36.45 | 38.63 | 43.65 | 49.87 | 51.13 | 51.32 | 46.93 | 40.35 | 37.73 | 34.10 | 41.66 | ||||||||||||
1971 | 32.13 | ----- | z | ----- | z | 34.97 | 42.10 | 44.90 | 49.45 | 51.35 | 44.40 | 39.23 | 37.73 | 30.10 | 40.64 | b | ||||||||||
1972 | 28.19 | 33.93 | 37.48 | 36.50 | 44.65 | 48.37 | 50.97 | 51.68 | 45.80 | 39.03 | 38.37 | 32.58 | 40.63 | |||||||||||||
1973 | 32.55 | 34.71 | 36.68 | 37.50 | 43.00 | 48.20 | 51.32 | 50.29 | 49.20 | 44.48 | 36.30 | 38.48 | 41.89 | |||||||||||||
1974 | 32.77 | 36.21 | 37.90 | 40.97 | 42.84 | 47.80 | 51.06 | 53.16 | 49.83 | 42.00 | 40.87 | 37.03 | 42.70 | |||||||||||||
1975 | 34.81 | 34.07 | 35.52 | 36.00 | 43.03 | 48.17 | 53.13 | 52.87 | 47.70 | 45.03 | 38.30 | 36.16 | 42.07 | |||||||||||||
1976 | 36.42 | 34.31 | 33.97 | 38.17 | a | 43.06 | 46.13 | 51.61 | 53.48 | 50.43 | 43.87 | 39.21 | a | 36.94 | 42.30 | |||||||||||
1977 | 33.06 | 38.14 | 35.32 | 39.30 | 43.23 | 50.20 | 50.32 | 55.71 | 48.53 | 42.77 | 36.93 | 35.48 | 42.42 | |||||||||||||
1978 | 37.74 | 38.64 | 38.58 | 40.33 | 43.03 | 50.80 | 53.16 | 53.23 | 50.40 | 43.39 | 34.10 | 31.45 | 42.90 | |||||||||||||
1979 | 30.00 | 35.07 | 37.77 | 40.70 | 45.23 | 48.63 | 53.90 | 54.42 | 51.76 | a | 46.03 | 37.40 | 38.58 | 43.29 | ||||||||||||
1980 | 30.45 | 37.17 | 36.79 | b | 41.46 | b | 47.16 | 49.27 | 53.06 | 53.06 | 50.27 | 44.84 | 41.10 | 39.23 | a | 43.66 | ||||||||||
1981 | 36.50 | a | 36.89 | 38.55 | 40.50 | 45.39 | 48.27 | 52.03 | 54.00 | 48.90 | 42.00 | a | 40.53 | 36.48 | 43.34 | |||||||||||
1982 | 35.03 | a | 35.36 | 35.23 | 36.43 | 42.87 | 50.87 | 52.06 | 52.84 | 49.60 | 43.23 | 35.33 | 34.03 | 41.91 | ||||||||||||
1983 | 37.52 | 39.46 | 39.77 | 37.93 | 46.20 | a | 49.57 | 52.58 | 53.65 | 46.70 | 41.81 | 41.27 | 30.39 | 43.07 | ||||||||||||
1984 | 36.19 | 36.39 | a | 39.03 | 39.53 | 42.93 | a | 48.50 | b | 49.65 | 51.24 | b | 48.87 | 42.26 | 39.53 | 32.37 | a | 42.21 | ||||||||
1985 | 31.03 | b | 32.63 | a | 34.10 | a | 40.28 | a | 44.27 | a | 47.90 | 52.43 | a | 51.22 | d | 49.33 | 43.93 | a | 30.90 | 31.20 | a | 40.77 | ||||
1986 | 37.50 | a | 35.23 | b | 40.35 | 38.90 | 45.77 | 50.30 | 50.52 | 53.97 | 48.86 | a | 44.87 | 40.17 | 36.77 | a | 43.60 | |||||||||
1987 | 35.48 | 38.32 | 38.84 | 40.83 | 46.13 | 49.00 | a | 52.40 | a | 51.35 | 49.69 | a | 42.58 | 42.00 | 34.27 | a | 43.41 | |||||||||
1988 | 33.97 | a | 36.79 | 35.84 | 41.43 | 44.65 | 47.97 | 51.23 | 52.00 | 47.76 | a | 48.32 | 40.40 | 36.74 | 43.09 | |||||||||||
1989 | 36.60 | a | 30.07 | 36.74 | 41.30 | 45.00 | 50.50 | 51.77 | 52.32 | 48.00 | 44.03 | 41.33 | 39.39 | 43.09 | ||||||||||||
1990 | 36.45 | 33.07 | 37.42 | 42.31 | a | 45.32 | 50.57 | 54.00 | 54.77 | 52.03 | 42.71 | 40.73 | 30.63 | a | 43.34 | |||||||||||
1991 | 34.19 | 39.11 | 35.71 | 39.41 | a | 45.29 | 47.77 | 53.10 | 54.90 | a | 49.57 | 42.16 | 41.37 | 37.90 | 43.37 | |||||||||||
1992 | 37.67 | a | 39.28 | 39.23 | 42.48 | a | 45.26 | 52.10 | 54.71 | 53.65 | 47.67 | 45.84 | 40.07 | a | 34.18 | c | 44.34 | |||||||||
1993 | 31.70 | a | 32.29 | 37.81 | 42.40 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.05 | h | |||
1994 | ----- | z | 34.43 | 39.13 | 43.23 | 46.55 | 49.53 | 53.30 | a | 54.90 | 52.07 | 43.32 | 36.38 | a | 35.67 | a | 44.41 | a | ||||||||
1995 | 37.97 | 38.04 | ----- | z | ----- | z | 47.61 | 50.14 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.44 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 34.32 | 35.46 | 36.80 | 39.80 | 44.46 | 49.14 | 52.01 | 52.63 | 49.02 | 44.30 | 39.37 | 35.99 | 42.84 | |||||||||||||
S.D. | 3.33 | 2.74 | 2.00 | 2.27 | 1.98 | 1.94 | 1.66 | 1.76 | 1.85 | 2.28 | 2.46 | 2.81 | 1.28 | |||||||||||||
SKEW | -0.75 | -0.22 | -0.15 | -0.41 | -0.11 | -0.02 | 0.28 | 0.18 | -0.04 | -0.38 | -0.37 | -0.09 | -0.09 | |||||||||||||
MAX | 41.90 | 42.36 | 41.40 | 44.03 | 48.97 | 55.50 | 56.48 | 58.34 | 53.59 | 49.55 | 45.67 | 42.29 | 46.03 | |||||||||||||
MIN | 24.27 | 28.04 | 32.06 | 32.70 | 39.13 | 43.38 | 48.90 | 48.39 | 44.40 | 38.55 | 30.90 | 30.10 | 39.40 | |||||||||||||
YRS | 86 | 87 | 85 | 86 | 87 | 86 | 85 | 86 | 86 | 86 | 85 | 86 | 77 |