YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 48.50 | p | 34.09 | b | 28.33 | b | 31.21 | j |
1923 | 27.60 | 30.09 | 34.27 | 39.18 | 47.17 | b | 49.72 | a | 62.02 | 61.15 | a | 59.50 | f | 45.81 | b | 41.53 | 30.41 | d | 42.63 | a | ||||||
1924 | 29.48 | 36.89 | b | 32.21 | 42.03 | 54.57 | c | 55.81 | a | 60.85 | 58.90 | a | 54.93 | 41.94 | 36.07 | 26.31 | 44.17 | |||||||||
1925 | 29.57 | a | 31.57 | 35.27 | a | 40.82 | 50.28 | a | 52.95 | 66.19 | 60.17 | b | 50.80 | 44.98 | 35.83 | 35.50 | b | 44.49 | ||||||||
1926 | 32.94 | 34.37 | a | 37.95 | c | 47.28 | 47.93 | a | 59.22 | a | 61.20 | a | 59.33 | b | 48.80 | 46.73 | a | 41.28 | 29.27 | 45.53 | ||||||
1927 | 30.23 | a | 30.27 | b | 32.13 | 36.43 | a | 42.10 | a | 54.20 | o | 61.33 | a | 60.25 | a | 50.96 | b | 45.78 | a | 36.35 | t | 30.24 | l | 43.28 | c | |
1928 | 31.88 | a | 34.04 | a | 37.88 | b | 37.14 | b | 52.84 | ----- | z | 62.47 | 60.50 | b | 55.91 | a | 44.87 | 36.93 | 31.37 | a | 44.17 | a | ||||
1929 | 26.45 | a | 27.24 | a | 33.58 | 34.96 | d | 46.56 | d | 51.81 | c | 61.09 | b | 62.97 | a | 52.56 | e | 50.12 | b | 43.69 | a | 37.95 | c | 44.08 | ||
1930 | 24.54 | c | 35.90 | d | 39.48 | c | 44.02 | a | 43.44 | e | 53.00 | a | 60.98 | a | 59.37 | p | 59.88 | v | 45.24 | b | 42.13 | d | 32.02 | c | 42.08 | b |
1931 | 31.87 | e | 35.26 | c | 38.21 | b | 45.58 | f | 55.50 | 57.09 | b | 66.17 | e | 54.77 | r | ----- | z | 42.55 | u | 32.58 | l | 27.21 | g | 47.35 | f | |
1932 | ----- | z | 25.24 | b | 34.38 | a | 36.78 | c | 44.97 | b | 56.27 | 58.28 | b | 58.81 | 60.25 | 47.83 | a | 40.45 | a | 24.76 | b | 44.36 | a | |||
1933 | 24.15 | d | 23.35 | a | 32.55 | 37.69 | c | 39.26 | b | 52.20 | 62.66 | 63.85 | 51.22 | c | 53.48 | i | 42.08 | 34.27 | 42.12 | a | ||||||
1934 | 35.95 | 38.17 | b | 45.97 | 49.00 | a | 50.58 | 51.50 | b | 60.27 | 63.58 | 58.63 | o | 46.37 | a | 37.27 | 31.24 | 46.35 | a | |||||||
1935 | 27.50 | 32.57 | 27.40 | 37.50 | 46.32 | 53.73 | 58.00 | 62.48 | 59.74 | a | 44.10 | 33.23 | 32.85 | e | 42.95 | |||||||||||
1936 | 29.02 | 28.95 | 33.21 | 41.12 | b | 49.11 | 53.53 | 59.48 | 61.16 | 54.40 | 50.63 | 42.23 | 30.58 | g | 45.71 | a | ||||||||||
1937 | 15.43 | b | 24.81 | d | 33.92 | e | 35.77 | b | 46.48 | i | 53.83 | 60.85 | 58.24 | 55.20 | e | 47.20 | a | 37.32 | 34.11 | 41.52 | a | |||||
1938 | 29.32 | 28.38 | 29.68 | 39.22 | 50.40 | b | 59.07 | 66.69 | 61.48 | 57.03 | 44.32 | a | 33.02 | a | 31.77 | a | 44.20 | |||||||||
1939 | 28.70 | d | 25.06 | a | 33.69 | 42.60 | a | 47.65 | 49.52 | 60.42 | 62.84 | 56.30 | 44.70 | f | 42.39 | b | 37.19 | e | 44.21 | a | ||||||
1940 | 34.77 | a | 33.69 | 39.18 | a | 42.75 | 51.50 | 59.17 | 61.25 | e | 63.02 | i | 53.05 | 46.94 | 34.19 | c | 34.34 | c | 44.62 | a | ||||||
1941 | 32.98 | a | 35.67 | a | 41.45 | c | 40.91 | a | 47.42 | 50.45 | 62.80 | d | 58.60 | 50.05 | 44.61 | 40.78 | c | 32.55 | c | 44.86 | ||||||
1942 | 30.18 | 28.46 | a | 32.72 | b | 39.32 | 42.81 | 50.32 | 63.68 | f | 63.12 | c | 55.97 | 47.80 | a | 35.11 | b | 32.25 | e | 41.64 | a | |||||
1943 | 28.39 | c | 32.75 | b | 32.70 | u | 41.76 | e | 44.65 | 48.08 | 59.90 | a | 56.77 | a | 60.07 | 44.32 | 40.41 | a | 33.16 | c | 44.57 | a | ||||
1944 | ----- | z | 26.70 | g | 34.94 | f | 37.23 | 47.20 | d | 49.13 | 60.03 | ----- | z | 56.45 | b | 51.30 | a | 34.85 | c | 34.91 | b | 46.39 | d | |||
1945 | 31.89 | 32.18 | 28.64 | m | 37.48 | 46.03 | 53.30 | 63.08 | 61.08 | 54.32 | 49.71 | 33.71 | b | 30.16 | 44.81 | a | ||||||||||
1946 | 27.52 | 28.00 | ----- | z | 40.32 | 48.84 | 51.03 | 60.39 | 62.13 | 53.72 | 40.92 | 34.22 | 34.21 | 43.75 | a | |||||||||||
1947 | 29.27 | 37.21 | 39.76 | 43.37 | 52.61 | 46.00 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.45 | g | |||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.18 | 56.34 | 51.38 | a | 46.29 | 33.81 | a | 23.53 | a | 44.75 | f | |||
1949 | ----- | z | 24.45 | 28.13 | 43.33 | 50.74 | 54.95 | 60.42 | 57.97 | b | 59.93 | 47.00 | 48.72 | a | 29.91 | c | 45.96 | a | ||||||||
1950 | 27.44 | 33.43 | a | 35.44 | 41.20 | 46.56 | ----- | z | 60.35 | 60.90 | 54.17 | a | ----- | z | 38.84 | a | 37.53 | 43.59 | b | |||||||
1951 | 28.02 | 30.46 | 31.40 | 45.52 | 48.15 | 56.62 | a | 61.44 | 59.90 | 58.78 | c | 43.95 | 36.90 | 27.53 | 44.06 | |||||||||||
1952 | 23.02 | 28.12 | 28.48 | a | 39.41 | m | 56.33 | y | 49.97 | 63.68 | 60.34 | 59.87 | 55.08 | 36.03 | 29.16 | 43.37 | b | |||||||||
1953 | 31.71 | 31.50 | 32.29 | 37.62 | 40.69 | 47.40 | 60.21 | 58.32 | a | 59.30 | 46.47 | 40.07 | 31.84 | 43.12 | ||||||||||||
1954 | 28.81 | 34.93 | 32.29 | 41.71 | a | 50.74 | b | 48.62 | 58.77 | 53.58 | 50.42 | 44.05 | b | 38.45 | 28.18 | 42.55 | ||||||||||
1955 | 24.03 | a | 24.38 | 27.35 | 29.86 | a | 40.65 | 51.33 | 52.65 | 60.16 | 54.03 | 47.76 | 33.33 | a | 29.69 | 39.60 | ||||||||||
1956 | 29.75 | a | 25.97 | 30.55 | 32.89 | u | 47.84 | 50.77 | 61.97 | 57.10 | a | 55.37 | 43.58 | 38.75 | t | ----- | z | 44.76 | c | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.75 | 30.73 | 34.17 | 40.13 | 47.58 | 52.77 | 61.03 | 60.07 | 55.00 | 46.40 | 38.03 | 31.54 | 43.60 | |||||||||||||
S.D. | 3.95 | 4.29 | 4.42 | 3.90 | 4.02 | 3.37 | 2.67 | 2.40 | 3.41 | 2.94 | 3.87 | 3.56 | 1.58 | |||||||||||||
SKEW | -1.13 | -0.08 | 0.60 | -0.07 | -0.17 | 0.47 | -0.38 | -0.57 | 0.04 | 0.85 | 0.63 | -0.24 | -1.46 | |||||||||||||
MAX | 35.95 | 38.17 | 45.97 | 49.00 | 55.50 | 59.22 | 66.69 | 63.85 | 60.25 | 55.08 | 48.72 | 37.95 | 45.53 | |||||||||||||
MIN | 15.43 | 23.35 | 27.35 | 29.86 | 39.26 | 47.40 | 52.65 | 53.58 | 48.80 | 40.92 | 33.02 | 23.53 | 39.60 | |||||||||||||
YRS | 30 | 32 | 29 | 30 | 31 | 29 | 32 | 29 | 29 | 29 | 31 | 30 | 11 |