YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.40 | e | 76.93 | a | 76.13 | 72.00 | 64.83 | m | 51.00 | b | 40.55 | 64.17 | f | |||
1922 | 33.84 | 36.21 | 41.55 | ----- | z | 58.61 | 70.36 | h | 76.32 | 75.19 | 75.23 | ----- | z | ----- | z | ----- | z | 56.71 | e | |||||||
1923 | 37.06 | 42.18 | 46.00 | 44.20 | 57.71 | j | 59.45 | a | 73.16 | 73.94 | 71.43 | 58.70 | a | 49.57 | 38.81 | 54.04 | a | |||||||||
1924 | 41.06 | 47.55 | 40.16 | 50.37 | 63.74 | 71.50 | 75.90 | 76.52 | 73.20 | 55.29 | 47.83 | 36.94 | 56.67 | |||||||||||||
1925 | 39.55 | 42.79 | 46.39 | 48.69 | a | 59.34 | b | 66.40 | 77.34 | b | 73.97 | b | 66.70 | j | 58.00 | 49.27 | 49.71 | 55.59 | a | |||||||
1926 | 46.42 | 46.82 | 51.65 | 53.70 | 59.90 | 75.00 | a | 81.07 | a | 80.17 | b | 75.47 | 70.87 | 57.40 | 36.55 | b | 61.25 | |||||||||
1927 | 39.47 | a | 38.21 | 43.29 | 50.00 | 59.38 | e | 67.38 | a | 78.68 | 74.97 | 65.70 | 64.52 | 55.07 | 46.10 | 56.90 | ||||||||||
1928 | 52.45 | 51.76 | 53.06 | 54.47 | 63.23 | 70.34 | a | 80.00 | 77.74 | 75.87 | 63.77 | 54.20 | 48.31 | b | 62.10 | |||||||||||
1929 | 46.19 | 45.25 | 50.63 | a | 51.93 | a | 62.74 | 68.07 | 79.81 | 81.35 | 73.31 | a | 72.10 | 65.43 | 57.94 | 62.90 | ||||||||||
1930 | 43.94 | 56.14 | 55.68 | 58.17 | 55.16 | 74.13 | 80.19 | 79.55 | 70.70 | 68.35 | 58.50 | 53.06 | 62.80 | |||||||||||||
1931 | 51.30 | h | 47.61 | 55.74 | 59.13 | 65.71 | 65.60 | 84.55 | 80.61 | 71.13 | 62.65 | 49.90 | 45.23 | 62.53 | a | |||||||||||
1932 | 41.87 | a | 44.66 | 54.00 | 56.03 | 58.45 | 69.30 | 78.69 | b | 78.81 | 78.07 | 65.84 | 62.07 | 43.65 | 60.95 | |||||||||||
1933 | 43.06 | 47.61 | 51.39 | 52.73 | 53.00 | 66.27 | 78.84 | 78.13 | 75.40 | 68.48 | 63.37 | c | 51.19 | 60.79 | ||||||||||||
1934 | 57.00 | 52.11 | 65.35 | 63.20 | 66.90 | 66.30 | 79.71 | 81.03 | 74.90 | 63.16 | 53.37 | 47.19 | 64.19 | |||||||||||||
1935 | 44.29 | 47.68 | 46.94 | 53.43 | 58.55 | 74.93 | 77.16 | 79.84 | 78.87 | 64.93 | a | 50.77 | 47.03 | 60.37 | ||||||||||||
1936 | 45.77 | 44.07 | a | 54.13 | 58.70 | 65.00 | 72.17 | 80.23 | 81.19 | 74.67 | 62.45 | 58.63 | 45.48 | 61.87 | ||||||||||||
1937 | 33.32 | 46.32 | 51.16 | 57.00 | 66.45 | 69.23 | 79.90 | 81.77 | 76.87 | 64.97 | 54.80 | 50.26 | 61.01 | |||||||||||||
1938 | 47.39 | 42.18 | 44.77 | 54.33 | 60.48 | 70.20 | 77.77 | 78.00 | 74.67 | 58.77 | 52.23 | 49.94 | 59.23 | |||||||||||||
1939 | 44.81 | 41.36 | 52.03 | 60.50 | 63.61 | c | 66.90 | 73.81 | 79.32 | 70.17 | 61.90 | b | 57.83 | 57.45 | 60.81 | |||||||||||
1940 | 44.77 | 45.69 | 53.10 | 53.93 | 65.32 | 74.53 | 76.48 | 80.29 | 67.57 | 64.29 | 52.50 | 49.00 | 60.62 | |||||||||||||
1941 | 46.03 | 45.11 | 55.70 | a | 50.70 | 61.52 | 66.93 | 77.10 | 71.84 | 69.30 | 55.48 | 57.80 | 42.87 | 58.36 | ||||||||||||
1942 | 49.61 | 44.93 | 53.91 | i | 53.07 | 55.77 | 68.93 | 80.52 | 76.97 | 72.23 | 65.14 | c | 56.07 | 54.03 | a | 61.57 | a | |||||||||
1943 | 48.94 | 50.54 | 48.94 | 55.73 | 61.16 | 62.13 | 75.48 | 73.19 | 75.67 | 61.65 | 56.63 | 46.68 | 59.73 | |||||||||||||
1944 | 45.90 | 40.86 | 48.03 | 47.10 | 63.06 | 58.80 | 72.74 | 76.13 | 73.60 | 64.52 | 45.93 | 40.20 | a | 56.41 | ||||||||||||
1945 | 38.19 | 40.54 | 40.39 | 51.43 | 54.68 | 69.17 | 80.03 | 78.61 | 74.17 | 60.35 | 43.03 | 37.42 | 55.67 | |||||||||||||
1946 | 39.61 | 42.29 | 47.03 | a | 57.67 | 59.13 | 67.73 | 74.97 | 77.74 | 74.33 | 52.45 | 41.53 | 40.03 | 56.21 | ||||||||||||
1947 | 38.26 | 46.43 | 51.48 | 53.57 | 65.03 | 66.97 | 75.55 | 74.42 | 77.40 | 59.26 | 42.73 | 37.87 | 57.41 | |||||||||||||
1948 | 47.58 | 40.79 | 40.87 | 48.80 | 54.65 | 65.97 | 73.26 | 72.71 | 70.53 | 60.13 | 48.23 | 37.81 | 55.11 | |||||||||||||
1949 | 29.68 | 38.14 | 41.52 | 54.63 | 57.65 | 70.77 | 75.94 | 71.71 | 73.07 | 59.29 | 53.10 | 38.06 | 55.30 | |||||||||||||
1950 | 33.32 | 44.86 | 46.90 | 55.50 | 60.42 | 67.07 | 77.26 | 77.74 | 65.87 | 62.61 | 52.07 | 44.81 | 57.37 | |||||||||||||
1951 | 37.32 | 39.93 | 47.77 | 51.77 | 59.94 | 67.90 | 76.23 | 75.61 | 74.93 | 58.06 | 45.30 | 33.45 | 55.68 | |||||||||||||
1952 | 33.06 | 40.90 | 40.10 | 50.90 | 60.61 | 62.28 | a | 76.16 | 77.03 | 72.77 | 67.97 | 42.93 | 34.94 | 54.97 | ||||||||||||
1953 | 40.06 | 43.71 | 48.71 | 48.83 | 48.03 | 62.31 | a | 77.84 | 72.58 | 75.30 | 58.65 | 46.90 | 38.39 | 55.11 | ||||||||||||
1954 | 38.45 | 47.52 | a | 43.93 | a | 58.31 | a | 64.13 | a | 64.53 | 77.48 | 72.42 | 70.10 | 62.06 | 50.69 | a | 36.65 | 57.19 | ||||||||
1955 | 33.45 | 39.75 | d | 47.42 | 47.97 | a | 57.00 | 65.00 | 72.39 | 78.71 | 72.90 | 64.13 | 45.40 | 38.80 | f | 56.74 | a | |||||||||
1956 | 39.77 | 39.76 | 49.55 | 49.76 | a | 58.70 | a | 69.20 | 74.74 | 73.03 | 74.33 | 55.45 | 50.13 | 40.81 | 56.27 | |||||||||||
1957 | 34.23 | 43.54 | 46.90 | 50.43 | 51.81 | 70.87 | 75.97 | a | 74.32 | 70.67 | 53.23 | 40.53 | 39.16 | 54.30 | ||||||||||||
1958 | 39.26 | 42.21 | 38.00 | c | 50.17 | 61.55 | 62.27 | 73.03 | 78.42 | 72.30 | 67.87 | 47.93 | 49.55 | 56.88 | ||||||||||||
1959 | 40.03 | 37.32 | 49.42 | 56.10 | 53.40 | a | 70.50 | 78.90 | 72.81 | 64.40 | 62.74 | 55.33 | 45.13 | 57.17 | ||||||||||||
1960 | 33.00 | 38.41 | 49.39 | 50.63 | 56.74 | 73.10 | 75.65 | 74.23 | 73.67 | 57.61 | 44.27 | 39.61 | 55.53 | |||||||||||||
1961 | 44.48 | 41.07 | 40.23 | 50.43 | 53.16 | 73.87 | 80.42 | 74.94 | 66.77 | 58.61 | 44.27 | 36.90 | 55.43 | |||||||||||||
1962 | 40.16 | 37.46 | 36.40 | a | 53.10 | 51.19 | 68.00 | 75.74 | 77.45 | 72.03 | 59.29 | 49.87 | 46.42 | 55.59 | ||||||||||||
1963 | 42.58 | 48.29 | 41.77 | 43.20 | 58.39 | 62.57 | 75.90 | 76.77 | 71.03 | 59.00 | a | 46.03 | 44.48 | 55.84 | ||||||||||||
1964 | 39.61 | 44.28 | 41.81 | 48.73 | 54.77 | 65.53 | 79.39 | 78.97 | 70.20 | 65.90 | 41.90 | 38.55 | 55.80 | |||||||||||||
1965 | 39.39 | 45.29 | 42.90 | 48.80 | 56.90 | 63.93 | 76.81 | 76.48 | 63.40 | 66.55 | 47.07 | 38.26 | 55.48 | |||||||||||||
1966 | 38.26 | 40.04 | 48.13 | 58.40 | 65.94 | 70.77 | 77.26 | 80.74 | 71.33 | 62.97 | 48.27 | 41.74 | 58.65 | |||||||||||||
1967 | 43.13 | 47.93 | 45.10 | 39.77 | 57.42 | 63.80 | 80.97 | 82.26 | 70.23 | 64.90 | 53.60 | 35.45 | 57.05 | |||||||||||||
1968 | 41.32 | 46.07 | 45.94 | 51.93 | 57.87 | 71.53 | 78.81 | 71.65 | 74.37 | 60.42 | 48.29 | w | ----- | z | 59.99 | b | ||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 41.24 | 43.92 | 47.42 | 52.56 | 59.27 | 67.84 | 77.36 | 76.83 | 72.39 | 62.07 | 50.90 | 43.41 | 58.02 | |||||||||||||
S.D. | 5.60 | 4.26 | 5.69 | 4.60 | 4.47 | 3.98 | 2.57 | 3.04 | 3.46 | 4.43 | 6.02 | 6.16 | 2.71 | |||||||||||||
SKEW | 0.32 | 0.46 | 0.47 | -0.22 | -0.26 | -0.16 | 0.16 | -0.07 | -0.66 | -0.00 | 0.34 | 0.51 | 0.60 | |||||||||||||
MAX | 57.00 | 56.14 | 65.35 | 63.20 | 66.90 | 75.00 | 84.55 | 82.26 | 78.87 | 72.10 | 65.43 | 57.94 | 64.19 | |||||||||||||
MIN | 29.68 | 36.21 | 36.40 | 39.77 | 48.03 | 58.80 | 72.39 | 71.65 | 63.40 | 52.45 | 40.53 | 33.45 | 54.30 | |||||||||||||
YRS | 46 | 47 | 46 | 46 | 46 | 47 | 48 | 48 | 47 | 46 | 46 | 45 | 40 |