YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.95 | j | 50.58 | e | 49.10 | a | ----- | z | 40.39 | h | 31.63 | 32.10 | 40.85 | h | ||
1917 | 30.55 | 32.54 | 32.68 | 39.03 | 41.97 | a | 45.07 | 46.83 | s | 47.62 | e | 47.43 | 41.24 | b | 40.87 | 35.29 | 39.48 | a | ||||||||
1918 | 34.69 | b | 32.39 | e | 32.58 | 38.33 | 43.77 | 47.93 | 50.77 | 52.85 | e | 48.46 | b | 42.62 | g | ----- | z | ----- | z | 42.42 | c | |||||
1919 | ----- | z | 33.88 | l | 33.10 | 37.13 | 38.63 | a | ----- | z | ----- | z | 45.83 | a | 44.21 | b | 36.47 | a | 34.18 | b | 27.37 | a | 37.12 | d | ||
1920 | 32.23 | a | 29.41 | 31.68 | 32.26 | g | 35.77 | 43.92 | e | 48.35 | 46.88 | n | 44.14 | a | 38.77 | 33.24 | a | 33.81 | 37.13 | b | ||||||
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.64 | b | 45.81 | j | 46.40 | a | 40.57 | p | 39.93 | b | 34.77 | 30.46 | c | 39.64 | g | |
1922 | 25.52 | 26.68 | 29.06 | 32.25 | j | ----- | z | ----- | z | 46.45 | 48.16 | 44.63 | 41.16 | 31.69 | a | 25.62 | b | 35.44 | c | |||||||
1923 | 30.60 | a | 26.81 | b | 30.83 | a | 37.61 | b | 40.80 | a | 44.83 | a | 48.81 | d | 48.93 | c | 44.56 | c | 39.19 | 34.38 | a | 31.03 | a | 38.20 | ||
1924 | 30.84 | 34.41 | 31.55 | 34.13 | 39.00 | a | 42.83 | 45.87 | 45.38 | r | 42.27 | 39.93 | d | 32.67 | 24.62 | b | 36.19 | a | ||||||||
1925 | 30.42 | 33.82 | 33.00 | 36.43 | 41.68 | c | 45.04 | c | 47.58 | ----- | z | ----- | z | ----- | z | ----- | z | 37.07 | a | 38.13 | d | |||||
1926 | 33.16 | 34.39 | 35.68 | 38.41 | a | 42.80 | a | 48.85 | c | 47.97 | 48.60 | k | 39.45 | h | 43.33 | a | 37.03 | 32.60 | a | 39.42 | b | |||||
1927 | 31.52 | 32.68 | 33.10 | 34.60 | 39.77 | 46.70 | 49.48 | 48.58 | 46.30 | 41.74 | 36.00 | 28.14 | b | 39.05 | ||||||||||||
1928 | 32.90 | 31.97 | 34.43 | c | 36.30 | 41.45 | 47.20 | ----- | z | ----- | z | ----- | z | 37.68 | 35.50 | b | 29.94 | 36.37 | c | |||||||
1929 | 25.03 | 27.28 | c | 33.77 | 32.00 | b | 39.39 | 47.44 | c | 46.77 | a | 46.26 | 43.21 | a | 41.70 | k | 33.13 | 33.03 | a | 37.03 | a | |||||
1930 | 19.28 | b | 30.80 | c | 25.84 | 35.50 | 37.87 | 44.86 | a | 45.74 | 48.29 | 46.07 | 37.84 | 34.45 | a | 31.19 | 36.48 | |||||||||
1931 | 34.17 | b | 31.57 | 34.73 | a | 37.24 | a | 41.67 | a | 45.89 | c | 48.48 | f | 44.89 | d | 46.29 | b | 38.61 | c | 31.33 | 29.80 | a | 37.84 | a | ||
1932 | 28.37 | a | 29.45 | 34.67 | d | 37.55 | a | 39.35 | e | 44.77 | 45.62 | b | 47.52 | b | 42.08 | e | 39.16 | 38.61 | b | 28.26 | 37.95 | |||||
1933 | 30.23 | 27.33 | a | 32.41 | b | 34.89 | c | 41.23 | e | 45.04 | c | 46.14 | b | 49.73 | a | 43.21 | a | 41.33 | a | 38.21 | b | 34.97 | 38.73 | |||
1934 | 35.20 | a | 33.50 | b | 36.61 | c | 41.63 | 42.83 | b | 45.11 | c | 47.48 | d | 49.43 | c | 46.00 | 41.39 | 38.73 | 33.61 | 40.96 | ||||||
1935 | 29.28 | b | 31.58 | d | 32.07 | a | 33.81 | d | 38.67 | a | 46.55 | a | 48.37 | a | 48.57 | a | 43.80 | y | 36.81 | 31.86 | a | 32.42 | l | 37.76 | b | |
1936 | 32.03 | 24.03 | 31.84 | 39.37 | 43.61 | 49.37 | 47.81 | 47.84 | 42.10 | 41.26 | 31.89 | b | 31.50 | a | 38.55 | |||||||||||
1937 | 21.45 | 28.89 | a | 34.00 | 36.47 | 40.42 | 47.21 | a | 49.19 | ----- | z | ----- | z | ----- | z | 38.37 | 34.06 | 36.67 | c | |||||||
1938 | 33.35 | 32.21 | 33.94 | 39.50 | 41.87 | 46.14 | b | 48.61 | 46.23 | 49.57 | 40.06 | 34.33 | 34.06 | 39.99 | ||||||||||||
1939 | 37.00 | 31.21 | 34.52 | 38.60 | 42.39 | 45.03 | 47.71 | 50.58 | ----- | z | 41.74 | 39.70 | 37.10 | 40.51 | a | |||||||||||
1940 | 34.48 | 35.48 | 37.97 | 42.50 | 44.29 | 46.53 | 50.10 | a | 51.48 | 50.37 | 44.95 | j | 34.37 | 36.30 | a | 42.17 | a | |||||||||
1941 | 33.77 | 35.86 | 37.45 | 40.42 | f | 44.47 | a | 48.67 | 53.07 | a | 51.35 | 47.07 | 43.03 | 38.17 | 33.48 | 42.40 | a | |||||||||
1942 | 31.77 | 34.18 | 34.32 | 39.77 | 44.74 | 49.13 | 52.77 | 52.00 | 47.27 | 42.16 | 33.73 | 34.83 | a | 41.39 | ||||||||||||
1943 | 26.23 | 33.25 | 32.48 | 40.60 | 41.52 | 45.93 | 48.32 | 49.48 | 47.57 | 42.23 | a | 36.97 | 33.19 | 39.81 | ||||||||||||
1944 | 32.00 | 33.00 | 33.81 | 37.90 | ----- | z | ----- | z | ----- | z | 50.59 | b | 49.37 | 45.26 | 37.38 | a | 30.23 | 38.84 | c | |||||||
1945 | 33.90 | 34.36 | 33.94 | 36.67 | 44.19 | 46.63 | 48.03 | 48.13 | 47.90 | 42.26 | 33.60 | 33.03 | 40.22 | |||||||||||||
1946 | 33.65 | 33.07 | 34.32 | 37.97 | 43.73 | a | 47.00 | 51.23 | 48.68 | 46.57 | 39.13 | 33.03 | a | 32.71 | 40.09 | |||||||||||
1947 | 28.58 | 35.48 | c | 36.26 | 39.70 | 44.94 | 49.07 | a | 50.10 | 48.87 | 46.63 | 40.68 | 36.73 | 34.74 | 40.98 | |||||||||||
1948 | 32.29 | 31.48 | 33.58 | 36.33 | 43.29 | 50.57 | 50.19 | 51.00 | 46.77 | 40.00 | 35.10 | 28.26 | 39.91 | |||||||||||||
1949 | 24.68 | 28.54 | 36.39 | 38.40 | 43.71 | 45.10 | 47.90 | 50.70 | a | 47.57 | 38.23 | 39.66 | a | 31.23 | 39.34 | |||||||||||
1950 | 18.23 | 33.28 | c | 33.58 | 36.13 | 40.71 | 48.03 | 48.39 | 49.26 | 46.67 | 39.87 | 35.40 | 36.42 | 38.83 | ||||||||||||
1951 | 30.48 | 31.54 | 31.03 | 36.53 | 43.68 | 46.77 | 49.77 | 48.65 | 45.70 | 41.13 | 35.30 | 30.55 | 39.26 | |||||||||||||
1952 | 28.94 | 31.83 | 33.74 | 37.53 | 41.87 | 44.76 | a | 47.94 | 49.74 | 47.33 | 43.20 | a | 33.70 | 33.19 | 39.48 | |||||||||||
1953 | 35.16 | 33.07 | a | 33.81 | 37.67 | 42.94 | 46.31 | a | 48.74 | 51.81 | 46.43 | 42.55 | 38.30 | 35.33 | a | 41.01 | ||||||||||
1954 | 28.77 | a | 34.30 | a | 30.26 | 35.57 | 41.68 | 43.47 | 48.73 | a | 48.48 | 49.41 | a | 38.97 | 41.07 | b | 33.05 | k | 40.06 | a | ||||||
1955 | 32.89 | m | 33.15 | a | 32.19 | 35.33 | 40.65 | 46.87 | 49.35 | 47.93 | b | 47.07 | 40.06 | 31.23 | 31.47 | a | 39.57 | a | ||||||||
1956 | 31.13 | a | 29.59 | 33.55 | 38.93 | 44.61 | 47.47 | 51.70 | a | 51.45 | 47.90 | a | 42.10 | a | 35.77 | 33.48 | 40.64 | |||||||||
1957 | 26.45 | 31.29 | 36.50 | a | 40.21 | a | 47.64 | t | 50.10 | 50.58 | 49.97 | 51.07 | 42.10 | a | 35.64 | b | 34.87 | a | 40.80 | a | ||||||
1958 | 35.68 | 39.39 | 35.42 | 38.03 | 46.26 | 53.67 | 54.03 | a | 52.42 | 49.40 | 43.61 | 35.40 | 37.65 | 43.41 | ||||||||||||
1959 | 33.87 | 34.93 | 35.71 | 40.28 | a | 42.84 | 50.20 | 51.74 | 49.90 | 48.50 | 43.03 | 35.43 | 34.00 | a | 41.70 | |||||||||||
1960 | 33.42 | 33.90 | 34.23 | 39.63 | 44.71 | 47.83 | 50.00 | 52.45 | 47.57 | 44.29 | 37.03 | 34.42 | 41.62 | |||||||||||||
1961 | 35.55 | 37.50 | 37.97 | 40.37 | 44.81 | 50.07 | 53.52 | 52.45 | 46.60 | 41.26 | 33.50 | 33.81 | 42.28 | |||||||||||||
1962 | 33.65 | 34.82 | 33.48 | 40.30 | 43.68 | 46.83 | 49.16 | 51.97 | 48.21 | a | 44.19 | 38.80 | 37.32 | 41.87 | ||||||||||||
1963 | 31.55 | 38.46 | 35.39 | 40.38 | a | 44.71 | 49.10 | 51.68 | 51.90 | 51.57 | 45.16 | 37.73 | 36.84 | 42.87 | ||||||||||||
1964 | 34.97 | 33.90 | 36.45 | 38.57 | 41.82 | c | 49.07 | 51.55 | 51.52 | 47.67 | 42.00 | 35.73 | 30.52 | 41.15 | ||||||||||||
1965 | 34.42 | 36.18 | 34.81 | 40.50 | 41.84 | 45.90 | 51.32 | 53.17 | a | 46.37 | 44.81 | 40.57 | 34.13 | 42.00 | ||||||||||||
1966 | 33.06 | 34.82 | 35.45 | 39.90 | 42.87 | 48.50 | 51.03 | 51.52 | 51.00 | 42.48 | 38.73 | 37.48 | 42.24 | |||||||||||||
1967 | 35.87 | 36.14 | 34.55 | 38.07 | 45.03 | 50.87 | 51.81 | 52.29 | 50.67 | 44.55 | 38.83 | 35.61 | 42.86 | |||||||||||||
1968 | 34.03 | 35.17 | 38.42 | 38.50 | 45.35 | 47.93 | 52.10 | 51.77 | 48.77 | 42.10 | 37.87 | 30.58 | 41.88 | |||||||||||||
1969 | 25.81 | 31.89 | 36.00 | 39.17 | 45.94 | 52.50 | 50.97 | 49.94 | 48.83 | 41.32 | 39.07 | 36.52 | 41.50 | |||||||||||||
1970 | 33.77 | 36.64 | 36.23 | 38.47 | 42.42 | 47.93 | 50.00 | 49.06 | 46.60 | 40.42 | 36.47 | 32.58 | 40.88 | |||||||||||||
1971 | 33.81 | 34.43 | 33.45 | 38.43 | 43.23 | 47.63 | 50.87 | 54.10 | 47.27 | 42.10 | 38.70 | 31.52 | 41.29 | |||||||||||||
1972 | 29.45 | 33.17 | 37.45 | 36.37 | 46.35 | 48.87 | 52.16 | 52.68 | 45.70 | 41.32 | 37.57 | 31.42 | 41.04 | |||||||||||||
1973 | 29.32 | 34.71 | 37.45 | 38.60 | 43.84 | 47.47 | 50.97 | a | 48.97 | 49.13 | 42.97 | 34.97 | 37.55 | 41.33 | ||||||||||||
1974 | 32.68 | 35.57 | 35.94 | 41.47 | 42.94 | 47.62 | d | 51.48 | 51.84 | 50.93 | 41.90 | 37.63 | 34.87 | a | 42.07 | |||||||||||
1975 | 32.80 | a | 31.37 | a | 33.90 | 36.43 | 42.74 | 48.00 | 50.94 | 51.16 | 47.57 | 40.97 | 34.30 | 33.53 | a | 40.31 | ||||||||||
1976 | 33.32 | 33.55 | 33.10 | 38.57 | 43.35 | 46.23 | 51.32 | 51.97 | 49.77 | 42.71 | ----- | z | 35.94 | 41.80 | a | |||||||||||
1977 | 31.58 | 37.11 | 35.71 | 39.93 | 43.77 | 48.67 | 50.16 | 52.81 | 48.40 | 40.73 | a | 33.83 | 33.52 | 41.35 | ||||||||||||
1978 | 36.17 | a | 36.82 | 38.86 | b | 39.90 | 43.35 | 50.40 | 52.68 | 52.68 | 49.57 | 43.74 | 33.00 | 30.48 | 42.30 | |||||||||||
1979 | 26.19 | 32.59 | a | 36.70 | a | 39.27 | 44.97 | a | 46.90 | a | 51.10 | b | 53.13 | a | 51.90 | 44.58 | 34.79 | b | 36.39 | 41.54 | ||||||
1980 | 28.20 | a | 37.11 | a | 37.40 | a | 41.13 | 45.63 | a | 48.70 | 48.81 | 50.80 | a | 48.54 | b | ----- | z | ----- | z | ----- | z | 42.92 | c | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 31.11 | 33.00 | 34.31 | 38.14 | 42.64 | 47.37 | 49.76 | 50.12 | 47.36 | 41.39 | 35.86 | 33.04 | 40.69 | |||||||||||||
S.D. | 4.01 | 3.02 | 2.35 | 2.09 | 2.19 | 2.12 | 2.03 | 2.12 | 2.34 | 2.07 | 2.58 | 2.98 | 1.50 | |||||||||||||
SKEW | -1.24 | -0.58 | -0.66 | -0.48 | -0.74 | 0.43 | -0.14 | -0.36 | -0.34 | -0.26 | 0.08 | -0.59 | -0.62 | |||||||||||||
MAX | 37.00 | 39.39 | 38.86 | 42.50 | 46.35 | 53.67 | 54.03 | 54.10 | 51.90 | 45.26 | 41.07 | 37.65 | 43.41 | |||||||||||||
MIN | 18.23 | 24.03 | 25.84 | 32.00 | 35.77 | 42.83 | 45.62 | 44.89 | 42.08 | 36.47 | 31.23 | 24.62 | 36.48 | |||||||||||||
YRS | 61 | 62 | 63 | 60 | 60 | 61 | 59 | 59 | 57 | 58 | 61 | 61 | 41 |