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 | 27.17 | ----- | z | 27.17 | 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 | 25.16 | 34.37 | 36.74 | 41.90 | 46.77 | 48.94 | 41.80 | 32.23 | 19.73 | 15.77 | 34.34 | b | ||||||||||
1931 | 20.16 | 17.43 | 27.10 | 31.13 | 38.58 | 45.07 | 48.26 | 45.55 | 40.73 | 31.32 | 19.23 | 15.48 | 31.67 | |||||||||||||
1932 | 10.65 | 14.07 | 22.58 | 32.97 | 36.97 | a | 44.83 | 44.58 | 47.61 | 38.83 | 33.13 | 26.93 | 12.13 | 30.44 | ||||||||||||
1933 | 14.94 | 9.54 | 22.81 | 29.70 | 36.48 | 41.33 | 46.10 | 47.90 | 38.10 | 31.52 | b | 26.67 | 21.55 | 30.55 | ||||||||||||
1934 | 19.39 | 20.25 | 28.74 | 36.33 | 39.23 | 44.73 | 47.03 | 47.40 | a | 39.17 | 35.13 | 30.10 | a | 16.32 | 33.65 | |||||||||||
1935 | 12.03 | 19.07 | 20.37 | a | 27.20 | 35.55 | 41.43 | 47.40 | a | 44.80 | a | 41.17 | 30.10 | 19.53 | 17.03 | 29.64 | ||||||||||
1936 | 15.00 | -2.38 | 20.74 | 32.13 | 42.61 | 45.20 | 46.58 | 46.16 | 38.53 | 33.03 | 19.20 | 17.87 | 29.56 | |||||||||||||
1937 | -2.77 | 12.18 | 25.77 | 30.77 | 36.71 | 45.40 | 49.74 | 43.84 | 42.03 | 34.07 | p | ----- | z | ----- | z | 31.52 | c | |||||||||
1938 | 16.88 | o | 18.79 | 25.32 | 31.53 | 38.06 | 45.53 | 50.53 | a | 44.16 | 44.93 | 34.06 | 19.70 | 13.81 | 33.31 | a | ||||||||||
1939 | 17.65 | 11.07 | 22.90 | 33.63 | 38.71 | 41.37 | 47.45 | 47.68 | 41.27 | 32.19 | 25.90 | 24.00 | 31.98 | |||||||||||||
1940 | 15.87 | 20.10 | 27.13 | 34.03 | 40.42 | 44.33 | 49.97 | 46.06 | 46.30 | 36.84 | 17.40 | 18.32 | 33.07 | |||||||||||||
1941 | 18.97 | 19.14 | 28.55 | 34.55 | a | 39.16 | 45.28 | a | 50.55 | 47.39 | 38.87 | 32.77 | 26.57 | 18.81 | 33.38 | |||||||||||
1942 | 10.42 | 18.57 | 22.03 | 31.73 | 38.13 | 43.14 | a | 48.68 | 47.26 | 39.76 | a | 32.29 | 20.90 | 16.03 | 30.75 | |||||||||||
1943 | 0.97 | 18.14 | 18.00 | b | 32.47 | 34.52 | b | 41.03 | 47.52 | 44.77 | 39.50 | 35.19 | 26.53 | 13.94 | 29.38 | |||||||||||
1944 | 10.94 | 14.86 | 20.55 | 32.37 | 38.03 | a | 45.10 | 47.07 | a | 44.39 | 42.80 | 35.67 | a | 23.97 | 10.42 | 30.51 | ||||||||||
1945 | 15.52 | 18.68 | 22.16 | 27.73 | 37.94 | 42.87 | 46.45 | 45.87 | 38.43 | 31.33 | a | 20.31 | a | 16.77 | 30.34 | |||||||||||
1946 | 13.71 | 15.93 | 23.65 | 31.43 | 37.87 | 41.70 | 44.73 | a | 45.26 | 39.17 | a | 27.86 | b | 16.63 | 13.81 | 29.31 | ||||||||||
1947 | 8.65 | 18.68 | 25.55 | 31.77 | 39.10 | 42.93 | 45.77 | 42.68 | 40.17 | 34.58 | 22.93 | 18.55 | 30.95 | |||||||||||||
1948 | 11.16 | 11.76 | 19.35 | 28.40 | 39.23 | 48.23 | 44.55 | 44.58 | 37.52 | a | 27.47 | a | 21.97 | 6.23 | 28.37 | |||||||||||
1949 | -0.55 | 8.25 | 23.68 | 30.97 | 38.77 | 39.83 | 44.61 | 44.23 | 39.53 | 26.83 | b | 27.83 | a | 12.13 | 28.01 | |||||||||||
1950 | -9.97 | 16.18 | 20.55 | 27.43 | 33.26 | 43.30 | 44.87 | a | 44.32 | 37.73 | 31.68 | 20.77 | 20.97 | 27.59 | ||||||||||||
1951 | 9.23 | 12.32 | 16.74 | 27.21 | a | 36.23 | 40.70 | 44.35 | 43.23 | 37.57 | 31.71 | 19.57 | 3.40 | a | 26.85 | |||||||||||
1952 | 9.29 | c | 13.07 | 18.71 | 28.70 | 34.55 | 40.27 | 43.23 | 42.74 | 39.23 | 28.42 | 16.57 | b | 19.10 | 27.82 | |||||||||||
1953 | 20.26 | 15.29 | 22.71 | 28.97 | a | 34.35 | 41.57 | 43.68 | 44.65 | 34.67 | 28.90 | 24.03 | 14.74 | 29.48 | ||||||||||||
1954 | 6.42 | 19.37 | a | 17.26 | 25.03 | 37.61 | 40.33 | 43.97 | a | 45.00 | 38.03 | 27.00 | 30.10 | 17.26 | 28.95 | |||||||||||
1955 | 14.42 | 12.26 | a | 12.24 | b | 26.43 | 34.77 | 40.93 | 47.68 | 41.35 | 36.17 | 30.23 | 8.90 | a | 1.11 | c | 25.54 | |||||||||
1956 | 13.03 | b | 3.88 | c | 9.22 | m | ----- | z | ----- | z | 41.00 | a | 47.38 | g | 44.32 | f | 37.56 | e | 29.89 | d | 17.80 | e | 9.76 | n | 23.86 | f |
1957 | -5.12 | e | 3.47 | k | 21.91 | h | 28.20 | j | 40.95 | j | 44.23 | 42.83 | h | 40.17 | g | 36.48 | i | ----- | z | ----- | z | 19.00 | o | 19.56 | j | |
1958 | 19.77 | 27.43 | 24.20 | a | 29.10 | a | 39.83 | b | 45.20 | 45.94 | 45.32 | 35.11 | b | 32.94 | o | ----- | z | ----- | z | 34.66 | c | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 10.74 | 14.96 | 22.39 | 30.67 | 37.53 | 43.06 | 46.59 | 45.30 | 39.45 | 31.59 | 22.11 | 15.02 | 29.90 | |||||||||||||
S.D. | 8.04 | 5.84 | 3.85 | 2.82 | 2.13 | 2.14 | 2.10 | 1.82 | 2.60 | 2.76 | 4.87 | 5.34 | 2.05 | |||||||||||||
SKEW | -1.01 | -0.88 | -0.50 | -0.07 | -0.03 | 0.33 | 0.34 | 0.03 | 0.66 | -0.07 | -0.39 | -1.01 | -0.01 | |||||||||||||
MAX | 20.26 | 27.43 | 28.74 | 36.33 | 42.61 | 48.23 | 50.55 | 48.94 | 46.30 | 36.84 | 30.10 | 24.00 | 33.65 | |||||||||||||
MIN | -9.97 | -2.38 | 12.24 | 25.03 | 33.26 | 39.83 | 43.23 | 41.35 | 34.67 | 26.83 | 8.90 | 1.11 | 25.54 | |||||||||||||
YRS | 27 | 27 | 27 | 27 | 27 | 29 | 27 | 27 | 28 | 26 | 27 | 25 | 23 |