YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.97 | a | 54.32 | 51.45 | 49.23 | 36.87 | 25.77 | 15.90 | a | 40.50 | e | |||||
1912 | 20.81 | 19.45 | 28.94 | 31.27 | 40.94 | 47.60 | 52.19 | 51.90 | ----- | z | ----- | z | ----- | z | ----- | z | 36.64 | d | ||||||||
1913 | 16.87 | 23.11 | 24.87 | 30.47 | 38.27 | a | 45.60 | 50.32 | 49.87 | 42.23 | 33.94 | 30.00 | 15.80 | a | 33.45 | |||||||||||
1914 | 23.19 | 21.21 | 22.90 | 32.53 | 39.48 | 48.67 | 51.55 | 50.77 | 44.57 | 34.87 | a | 29.30 | 21.13 | 35.01 | ||||||||||||
1915 | 17.84 | 21.04 | 22.74 | 33.47 | 37.55 | 47.20 | 52.55 | 49.35 | 45.27 | 33.90 | 24.33 | 19.58 | 33.73 | |||||||||||||
1916 | 27.74 | 24.93 | 30.71 | c | 31.63 | 38.03 | 44.63 | 51.10 | 50.35 | ----- | z | ----- | z | ----- | z | ----- | z | 37.39 | d | |||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | 33.68 | b | 40.94 | 51.13 | 54.29 | 51.84 | 46.20 | 40.00 | 25.60 | 19.29 | 40.33 | c | ||||||||
1919 | 16.97 | ----- | z | 42.62 | w | 35.63 | c | 41.10 | 46.77 | 52.48 | 51.74 | 48.80 | 41.71 | 30.37 | 26.29 | 39.19 | b | |||||||||
1920 | 25.00 | 28.93 | 27.33 | a | 31.20 | 41.13 | a | 47.90 | 50.94 | 49.68 | ----- | z | 35.19 | 30.21 | a | 8.19 | 34.15 | a | ||||||||
1921 | 18.46 | c | 19.89 | 27.71 | 30.03 | 40.26 | 47.40 | 52.65 | 51.19 | 47.40 | 37.84 | 24.53 | 20.11 | l | 36.12 | a | ||||||||||
1922 | 21.58 | s | 24.64 | 26.52 | 33.50 | f | 41.79 | b | 48.43 | 53.23 | ----- | z | 47.97 | 36.61 | c | 24.14 | i | 26.14 | j | 39.88 | e | |||||
1923 | 25.55 | 24.14 | 24.42 | 33.67 | 40.39 | 47.86 | a | 52.23 | 52.26 | 39.35 | g | 26.10 | 16.72 | a | 11.48 | 32.26 | a | |||||||||
1924 | 4.48 | 12.21 | 22.90 | b | 32.70 | 40.87 | 50.00 | 53.00 | 51.16 | 43.07 | 36.03 | 28.67 | 19.13 | 32.85 | ||||||||||||
1925 | 14.61 | 24.68 | 36.70 | h | 46.28 | e | 40.36 | q | 42.53 | 50.63 | a | 49.27 | p | 47.63 | 39.23 | ----- | z | 18.42 | g | 37.94 | e | |||||
1926 | 15.87 | 26.86 | 32.52 | 39.30 | 44.61 | 47.38 | a | 50.03 | a | 45.90 | 44.50 | 38.68 | 32.90 | 23.39 | h | 38.05 | a | |||||||||
1927 | 26.39 | 28.21 | 29.23 | a | 30.83 | 33.48 | 37.30 | 44.48 | 41.61 | 39.80 | 34.03 | 28.83 | 13.48 | 32.31 | ||||||||||||
1928 | 18.71 | 16.48 | 29.13 | 34.55 | h | 42.39 | 48.03 | a | 50.76 | b | 45.91 | t | 44.00 | 39.10 | b | 27.40 | 18.77 | a | 33.48 | b | ||||||
1929 | 19.42 | 19.37 | a | 26.42 | 34.10 | 41.10 | 43.50 | 53.35 | 51.90 | 47.40 | 37.10 | 21.53 | 19.16 | 34.53 | ||||||||||||
1930 | 17.73 | a | 23.71 | 23.13 | 34.37 | 37.74 | 46.93 | 51.16 | 51.06 | 44.87 | 36.57 | q | 24.00 | a | 15.88 | e | 33.69 | a | ||||||||
1931 | 16.42 | 25.39 | 23.13 | 33.23 | 37.23 | 46.90 | 51.77 | 49.16 | 49.27 | 37.74 | 29.45 | j | 17.06 | 35.21 | a | |||||||||||
1932 | ----- | z | 27.97 | 24.32 | 29.93 | 36.84 | 47.86 | p | 52.00 | 51.29 | 42.90 | 35.03 | 24.00 | 19.52 | 34.38 | b | ||||||||||
1933 | 20.16 | 18.86 | 27.05 | i | 29.23 | q | 37.48 | 47.03 | 47.42 | 43.10 | 41.67 | 34.68 | 29.00 | 21.65 | 34.10 | b | ||||||||||
1934 | 15.23 | 18.61 | 22.90 | 39.90 | 45.90 | 42.30 | j | 52.80 | p | 51.00 | 40.73 | 38.16 | 30.57 | 25.39 | 32.84 | b | ||||||||||
1935 | 24.58 | 24.21 | 31.68 | 35.43 | 37.68 | 47.33 | 52.94 | 54.84 | 45.10 | 38.26 | 29.14 | a | 22.68 | 36.99 | ||||||||||||
1936 | 20.13 | 26.24 | 29.00 | 34.27 | 42.52 | 49.23 | 52.32 | 50.84 | 46.27 | 36.19 | 26.67 | 21.90 | a | 36.30 | ||||||||||||
1937 | 18.26 | 22.96 | 25.42 | 33.17 | 41.68 | 47.03 | 50.84 | 52.00 | e | 47.27 | 38.43 | a | 28.03 | 23.14 | c | 35.69 | ||||||||||
1938 | 20.71 | 26.07 | 28.17 | b | 30.93 | a | 39.90 | 49.67 | 50.52 | ----- | z | 43.90 | i | 36.90 | 21.33 | 21.97 | 32.62 | b | ||||||||
1939 | 18.32 | c | 14.32 | 20.80 | u | 32.20 | y | 38.74 | 47.10 | 51.42 | 49.10 | 45.37 | 32.84 | 26.77 | 16.03 | 34.00 | b | |||||||||
1940 | 11.29 | 21.14 | 27.80 | a | 31.73 | 42.68 | 47.83 | a | 53.45 | 51.45 | 47.00 | a | 37.70 | d | 27.37 | 27.53 | l | 36.31 | a | |||||||
1941 | 24.68 | f | 27.52 | a | 27.65 | 31.69 | a | 42.93 | b | 45.83 | a | 49.59 | b | 50.86 | b | 47.00 | u | 38.58 | l | ----- | z | 23.54 | c | 37.45 | d | |
1942 | 23.06 | 21.46 | b | 23.55 | b | 34.50 | 40.73 | e | 47.37 | 54.65 | 52.07 | c | 45.31 | a | 35.43 | c | 29.47 | 22.74 | 35.86 | |||||||
1943 | 22.47 | a | 22.36 | f | 26.06 | m | 28.27 | s | 38.97 | a | 46.00 | c | 50.31 | b | 50.40 | p | 44.62 | q | 33.73 | a | 24.21 | f | 20.65 | h | 38.30 | g |
1944 | 18.52 | 24.28 | 21.30 | u | 30.10 | 39.40 | a | 45.90 | 49.39 | 50.29 | 41.31 | a | 33.67 | a | 21.40 | 15.87 | 33.65 | a | ||||||||
1945 | 15.35 | 20.43 | 21.58 | 26.83 | 35.03 | 41.13 | 50.77 | 53.13 | a | 45.40 | 37.35 | 27.37 | 20.16 | 32.88 | ||||||||||||
1946 | 19.45 | 20.93 | 28.00 | 37.45 | a | 39.26 | 44.20 | 50.50 | a | 52.68 | 49.03 | 38.55 | 24.50 | b | 24.58 | 35.76 | ||||||||||
1947 | 17.97 | 24.68 | 27.23 | 31.24 | i | ----- | z | 45.82 | h | 51.77 | 51.77 | 44.17 | 37.71 | 25.83 | 19.29 | 33.38 | c | |||||||||
1948 | 17.97 | a | 22.86 | 24.55 | 37.03 | 41.26 | 50.43 | 46.58 | 49.26 | ----- | z | ----- | z | ----- | z | ----- | z | 36.24 | d | |||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | 39.65 | 47.00 | a | 52.41 | b | 50.39 | 47.69 | d | 34.00 | a | 27.67 | ----- | z | 42.69 | e | |||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.48 | 50.44 | m | ----- | z | ----- | z | 29.60 | j | 21.90 | k | 50.48 | k | |
1951 | 17.39 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 56.06 | m | 54.17 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | 21.81 | m | 25.06 | 32.69 | a | 39.03 | 47.79 | a | 51.39 | 52.26 | 43.33 | 34.42 | 25.53 | 18.84 | 37.03 | b | ||||||||
1953 | 22.26 | 16.79 | 28.71 | 32.67 | 36.06 | 48.63 | 52.87 | 49.48 | 43.87 | 37.13 | 28.63 | 16.90 | 34.50 | |||||||||||||
1954 | 22.87 | 25.89 | 29.94 | 36.83 | 41.06 | 48.10 | 54.68 | 52.19 | 49.27 | 39.65 | 27.37 | 21.97 | 37.48 | |||||||||||||
1955 | 19.65 | 17.57 | 28.48 | 33.50 | 39.35 | 45.93 | a | 52.87 | 51.81 | 46.30 | 37.26 | 27.93 | 24.87 | 35.46 | ||||||||||||
1956 | 25.74 | 18.66 | 25.43 | a | 31.23 | 41.97 | 51.20 | 53.10 | a | 51.00 | a | 44.60 | 38.10 | 23.77 | 21.27 | a | 35.51 | |||||||||
1957 | 28.06 | 34.00 | 30.03 | 32.83 | 38.29 | 47.37 | 53.87 | 52.97 | 43.93 | 37.74 | 25.30 | 24.13 | 37.38 | |||||||||||||
1958 | 17.84 | 27.18 | 27.39 | 32.33 | 41.58 | g | 51.07 | 53.10 | 52.84 | 49.10 | 38.94 | 28.93 | a | 23.16 | 36.53 | a | ||||||||||
1959 | 20.23 | a | 24.14 | 24.00 | 36.00 | 39.71 | 50.67 | 52.10 | 53.74 | 45.20 | 37.26 | 23.60 | 23.00 | 35.80 | ||||||||||||
1960 | 18.63 | a | 19.00 | 28.84 | 33.10 | 37.74 | 49.80 | 52.19 | 51.52 | 46.30 | 36.48 | 28.27 | 21.87 | 35.31 | ||||||||||||
1961 | 16.33 | g | 22.74 | a | 28.77 | 32.48 | e | 41.70 | d | 46.43 | 50.77 | 51.71 | 47.52 | a | 36.16 | 23.37 | ----- | z | 38.17 | b | ||||||
1962 | 18.68 | 28.79 | 23.16 | 35.93 | 37.58 | 45.00 | 53.32 | 49.35 | 48.83 | 37.46 | c | 29.28 | a | 24.59 | b | 36.00 | ||||||||||
1963 | 18.32 | 23.96 | 28.71 | 32.84 | e | 40.42 | l | 45.14 | a | 52.58 | 51.23 | 46.54 | b | 37.28 | f | 26.73 | 16.60 | a | 34.26 | b | ||||||
1964 | 12.39 | 11.67 | b | 23.35 | 29.07 | 38.35 | 42.93 | 49.68 | 50.29 | 47.23 | 35.65 | 26.03 | 20.71 | 32.28 | ||||||||||||
1965 | 23.48 | 18.11 | 24.19 | 33.13 | 41.00 | 44.43 | 52.16 | 49.23 | 45.20 | 33.81 | 30.63 | 24.53 | a | 34.99 | ||||||||||||
1966 | 15.10 | 16.50 | 27.00 | 33.10 | 41.00 | 47.20 | 52.87 | 50.87 | 44.17 | 33.39 | 28.10 | 19.90 | 34.10 | |||||||||||||
1967 | 16.97 | 23.57 | 30.52 | 34.00 | 36.74 | 46.53 | 53.23 | 50.19 | 45.53 | 34.97 | 29.57 | 20.52 | 35.19 | |||||||||||||
1968 | 22.35 | 26.24 | 26.77 | 32.93 | 40.93 | a | 47.17 | 51.94 | 50.23 | 41.63 | 36.84 | 27.10 | 18.32 | 35.20 | ||||||||||||
1969 | 26.74 | 23.14 | 21.10 | 35.10 | 39.45 | 48.07 | 55.39 | 53.81 | 47.37 | 39.48 | 26.53 | 24.71 | 36.74 | |||||||||||||
1970 | 18.10 | 25.11 | 24.23 | 29.50 | 37.52 | 45.97 | 52.13 | 51.06 | 46.10 | 33.52 | 26.03 | 22.58 | 34.32 | |||||||||||||
1971 | 18.77 | 20.36 | 25.48 | 31.43 | 39.52 | 45.27 | 53.81 | 49.61 | 45.10 | 36.81 | 28.30 | 24.16 | 34.88 | |||||||||||||
1972 | 19.94 | 22.55 | 31.29 | 32.27 | 38.00 | 47.33 | 52.77 | 50.84 | 47.30 | 41.00 | 23.27 | 23.03 | 35.80 | |||||||||||||
1973 | 18.90 | 22.82 | 26.03 | 29.20 | 40.39 | 45.43 | 53.13 | 49.81 | 46.63 | 36.65 | 31.90 | 22.94 | 35.32 | |||||||||||||
1974 | 24.61 | 19.32 | 32.45 | 34.50 | 42.26 | 48.93 | 53.16 | 51.45 | 45.87 | 39.94 | 27.30 | 20.29 | 36.67 | |||||||||||||
1975 | 21.55 | 23.04 | 28.10 | 30.67 | 37.42 | 46.53 | 54.32 | 52.52 | 45.43 | 36.84 | 25.57 | 22.48 | 35.37 | |||||||||||||
1976 | 18.58 | 27.48 | 28.68 | 32.17 | 39.45 | 47.03 | a | 51.26 | 50.23 | 45.70 | 32.58 | 23.80 | 19.16 | 34.68 | ||||||||||||
1977 | 20.81 | 22.64 | 25.03 | 33.77 | 38.77 | 49.40 | 52.97 | 54.52 | 48.10 | 38.07 | a | 28.63 | 24.35 | 36.42 | ||||||||||||
1978 | 23.71 | 21.82 | 30.97 | 35.20 | 40.32 | 49.97 | 53.68 | 50.32 | 46.80 | ----- | z | ----- | z | ----- | z | 39.20 | c | |||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.72 | 22.54 | 26.75 | 33.26 | 39.69 | 47.07 | 51.93 | 50.84 | 45.69 | 36.51 | 26.80 | 20.46 | 35.14 | |||||||||||||
S.D. | 4.21 | 4.19 | 2.91 | 3.02 | 2.22 | 2.45 | 1.88 | 2.17 | 2.27 | 2.54 | 2.95 | 3.68 | 1.34 | |||||||||||||
SKEW | -0.56 | -0.26 | 0.05 | 1.51 | -0.01 | -1.12 | -1.35 | -1.97 | -0.48 | -1.05 | -0.73 | -0.99 | -0.46 | |||||||||||||
MAX | 28.06 | 34.00 | 32.52 | 46.28 | 45.90 | 51.20 | 55.39 | 54.84 | 49.27 | 41.71 | 32.90 | 26.29 | 37.48 | |||||||||||||
MIN | 4.48 | 11.67 | 21.10 | 26.83 | 33.48 | 37.30 | 44.48 | 41.61 | 39.80 | 26.10 | 16.72 | 8.19 | 32.28 | |||||||||||||
YRS | 57 | 59 | 56 | 57 | 60 | 62 | 65 | 60 | 57 | 58 | 56 | 53 | 34 |