YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.79 | a | ----- | z | 35.79 | k |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | 36.63 | 47.70 | 49.56 | 54.92 | 64.23 | 65.68 | 56.41 | a | 41.63 | 27.07 | 21.45 | 46.53 | b | |||||||||
1931 | 25.56 | ----- | z | 35.55 | 44.17 | 53.81 | 57.95 | 65.69 | 64.18 | 52.93 | 44.11 | 26.63 | 21.73 | 44.76 | a | |||||||||||
1932 | 17.15 | 22.88 | 31.63 | 44.12 | a | 50.30 | a | 60.03 | 60.97 | 63.71 | 55.93 | a | 43.55 | 33.00 | 19.29 | 41.88 | ||||||||||
1933 | 22.40 | 18.79 | 31.52 | 41.88 | 46.84 | 56.70 | 63.39 | 65.10 | 50.27 | 42.86 | b | 32.12 | 27.60 | 41.62 | ||||||||||||
1934 | 25.97 | 29.88 | 39.35 | 51.26 | a | 54.05 | 59.57 | 64.29 | 65.03 | a | 51.60 | 45.16 | 36.05 | a | 23.06 | 45.44 | ||||||||||
1935 | 18.48 | 28.00 | 29.05 | a | 39.12 | 49.85 | 56.40 | 62.43 | a | 61.48 | b | 57.75 | 41.56 | 26.07 | a | 22.69 | 41.07 | |||||||||
1936 | 22.44 | 7.21 | 30.32 | 45.08 | 56.52 | 58.55 | 64.44 | 64.16 | 53.78 | 47.58 | 28.85 | 24.94 | 41.99 | |||||||||||||
1937 | 4.77 | 20.34 | 35.15 | 41.13 | 51.03 | 58.57 | 65.97 | 59.76 | 56.63 | 47.43 | p | ----- | z | ----- | z | 43.71 | c | |||||||||
1938 | 23.06 | o | 26.07 | 33.24 | 44.10 | 52.45 | 61.02 | 67.72 | a | 61.85 | 61.70 | 45.77 | 27.60 | 20.77 | a | 45.66 | a | |||||||||
1939 | 24.68 | 20.07 | 33.47 | 46.63 | 53.16 | 53.92 | 64.68 | a | 66.13 | 57.27 | 43.52 | a | 32.97 | 29.60 | 43.84 | |||||||||||
1940 | 22.48 | 27.57 | 37.15 | 45.07 | 53.82 | 60.70 | 65.90 | 64.34 | 60.87 | 45.58 | 24.53 | 24.44 | 44.37 | |||||||||||||
1941 | 24.32 | 27.82 | 40.13 | 47.59 | a | 50.44 | 56.64 | a | 66.35 | 61.35 | 49.45 | 43.13 | 34.07 | 24.92 | 43.85 | |||||||||||
1942 | 17.29 | 26.43 | 32.22 | a | 44.83 | 48.69 | 54.64 | a | 63.79 | 64.19 | 56.90 | a | 45.56 | 27.20 | 22.05 | 41.98 | ||||||||||
1943 | 8.66 | 27.20 | 28.67 | b | 45.43 | 47.38 | b | 54.27 | 64.47 | 61.00 | 57.07 | 44.95 | 31.60 | 20.76 | 40.95 | |||||||||||
1944 | 18.55 | 23.90 | 30.61 | 43.88 | 50.77 | a | 57.70 | 63.82 | a | 60.98 | 57.33 | a | 48.17 | a | 29.48 | 16.95 | 41.84 | |||||||||
1945 | 22.23 | 26.34 | 30.34 | 39.23 | 51.34 | 55.42 | 64.05 | 63.90 | 51.73 | 43.12 | a | 26.91 | a | 22.65 | 41.44 | |||||||||||
1946 | 21.08 | 24.84 | 33.23 | 43.22 | 53.32 | 53.70 | 61.58 | a | 62.29 | 52.69 | a | 38.78 | b | 24.73 | 20.53 | 40.83 | ||||||||||
1947 | 16.48 | 28.27 | 37.31 | 44.30 | 54.06 | 53.90 | 61.35 | 58.74 | 54.48 | 42.58 | 28.93 | 24.60 | 42.08 | |||||||||||||
1948 | 19.92 | 21.05 | 30.03 | 38.73 | 48.87 | 60.48 | 58.95 | 57.35 | 51.83 | a | 40.50 | a | 29.60 | 13.66 | 39.25 | |||||||||||
1949 | 8.50 | 18.54 | 33.42 | 44.68 | 53.98 | 55.13 | 61.34 | 60.31 | 54.93 | 38.31 | b | 35.34 | a | 20.35 | 40.40 | |||||||||||
1950 | 0.39 | 24.57 | 29.89 | 38.10 | 47.21 | 56.48 | 61.83 | a | 62.21 | 55.90 | 39.84 | 28.13 | 26.52 | 39.26 | ||||||||||||
1951 | 18.02 | 23.20 | 27.27 | 41.55 | a | 50.32 | 54.57 | 61.82 | 59.23 | 53.45 | 40.63 | 28.53 | 10.67 | b | 39.11 | |||||||||||
1952 | 17.12 | c | 23.93 | 30.55 | 43.62 | 50.44 | 55.02 | 62.15 | 61.56 | 57.95 | 47.29 | 27.20 | b | 25.61 | 41.87 | |||||||||||
1953 | 28.63 | 26.71 | 34.56 | 40.50 | a | 49.06 | 53.82 | 62.11 | 60.63 | 52.60 | 44.68 | 33.28 | 24.02 | 42.55 | ||||||||||||
1954 | 15.63 | 29.96 | a | 29.66 | 38.48 | 52.19 | 53.65 | 60.78 | a | 59.19 | 52.14 | a | 40.90 | 37.80 | 24.63 | 41.25 | ||||||||||
1955 | 22.31 | 22.50 | a | 24.84 | b | 37.67 | 46.68 | 56.88 | 61.94 | 61.31 | 53.60 | 42.42 | a | 20.27 | b | 12.98 | c | 38.62 | ||||||||
1956 | 20.84 | b | 17.00 | d | 24.69 | m | ----- | z | ----- | z | 54.81 | a | 64.35 | g | 62.10 | f | 55.06 | f | 43.19 | e | 26.42 | e | 22.07 | p | 32.45 | g |
1957 | 6.83 | h | 17.69 | l | 34.84 | i | 43.62 | j | 56.95 | j | 59.37 | 61.30 | h | 57.75 | i | 57.02 | i | ----- | z | ----- | z | 27.09 | o | 59.37 | k | |
1958 | 27.27 | 33.98 | 35.02 | a | 41.76 | a | 57.95 | b | 60.85 | 65.40 | 66.65 | 52.09 | b | 47.75 | o | ----- | z | ----- | z | 49.00 | c | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.89 | 24.12 | 32.62 | 43.11 | 51.26 | 56.75 | 63.39 | 62.31 | 54.79 | 43.28 | 29.64 | 21.86 | 41.61 | |||||||||||||
S.D. | 6.85 | 5.27 | 3.66 | 3.32 | 2.88 | 2.48 | 2.07 | 2.45 | 3.06 | 2.60 | 4.15 | 4.50 | 1.73 | |||||||||||||
SKEW | -1.10 | -1.12 | 0.17 | 0.21 | 0.32 | 0.39 | 0.04 | -0.03 | 0.38 | -0.01 | 0.11 | -0.87 | 0.27 | |||||||||||||
MAX | 28.63 | 33.98 | 40.13 | 51.26 | 57.95 | 61.02 | 67.72 | 66.65 | 61.70 | 48.17 | 37.80 | 29.60 | 45.44 | |||||||||||||
MIN | 0.39 | 7.21 | 24.84 | 37.67 | 46.68 | 53.65 | 58.95 | 57.35 | 49.45 | 38.31 | 20.27 | 10.67 | 38.62 | |||||||||||||
YRS | 26 | 26 | 27 | 27 | 27 | 29 | 27 | 27 | 27 | 26 | 27 | 25 | 22 |