YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | 43.20 | a | 46.71 | 51.65 | 61.43 | 74.73 | a | 73.48 | a | 84.61 | 84.79 | b | 71.82 | b | 61.58 | 45.63 | 38.03 | b | 61.47 | |||||||
1932 | 37.89 | d | 40.28 | 47.87 | 60.57 | b | 66.48 | d | 77.77 | 77.17 | a | 78.79 | b | 78.21 | a | 62.77 | 51.76 | a | 38.81 | 59.86 | ||||||
1933 | 39.97 | 40.00 | d | 47.70 | a | 61.86 | b | 57.90 | 70.77 | 80.87 | 81.52 | 65.03 | 64.97 | 52.97 | 45.35 | 59.08 | ||||||||||
1934 | 47.67 | a | 52.61 | 62.38 | b | 70.72 | a | 69.04 | e | 75.17 | g | 79.42 | g | 84.96 | f | 72.08 | d | 63.26 | 49.83 | 42.03 | 58.85 | c | ||||
1935 | 39.10 | 49.89 | 50.06 | 63.47 | 72.46 | c | 77.20 | 82.85 | e | 81.67 | j | 80.04 | e | 61.41 | i | 45.27 | 38.63 | a | 59.90 | b | ||||||
1936 | 42.62 | b | 31.75 | a | 51.00 | 63.63 | 72.70 | h | 72.71 | f | 78.70 | a | 81.39 | 73.27 | 68.23 | 51.97 | 48.45 | b | 59.10 | b | ||||||
1937 | 31.35 | 42.11 | 51.84 | 53.38 | a | 67.81 | 74.33 | 80.58 | 76.20 | a | 70.53 | 64.84 | 50.23 | 44.26 | 58.96 | |||||||||||
1938 | 41.90 | 42.96 | a | 50.81 | 61.50 | b | 68.17 | a | 75.20 | 83.84 | 77.65 | 78.43 | 61.81 | 45.03 | 43.73 | a | 60.92 | |||||||||
1939 | 46.00 | 43.04 | a | 56.23 | 64.25 | b | 71.32 | 69.60 | 80.23 | 85.83 | h | 76.24 | a | 63.07 | b | 54.27 | 47.20 | a | 61.04 | a | ||||||
1940 | 41.65 | 45.34 | 58.10 | 59.96 | b | 72.17 | a | 78.07 | 79.35 | h | 82.86 | c | 75.48 | g | 61.74 | 43.93 | 42.32 | 58.61 | b | |||||||
1941 | 39.94 | 49.82 | 60.70 | a | 64.73 | 65.35 | 69.60 | 86.76 | j | 77.75 | g | 66.17 | 59.94 | 51.90 | 42.97 | 57.11 | b | |||||||||
1942 | 33.06 | 44.61 | 53.61 | 62.10 | 64.81 | 71.00 | 80.65 | 82.60 | a | 78.76 | a | 66.03 | 43.67 | 41.23 | 60.18 | |||||||||||
1943 | 33.84 | 44.89 | 47.60 | a | 61.63 | 64.42 | 70.33 | 81.26 | 76.74 | 79.55 | a | 60.77 | 48.60 | 41.23 | 59.24 | |||||||||||
1944 | 39.94 | 44.93 | 52.00 | 57.53 | 67.65 | 72.40 | 81.97 | 77.19 | 76.70 | 66.81 | 45.47 | 36.16 | 59.90 | |||||||||||||
1945 | 42.00 | 45.50 | 46.55 | 54.77 | 65.97 | 72.04 | b | 82.68 | 81.29 | 70.80 | 64.13 | a | 43.50 | b | 38.55 | b | 58.98 | |||||||||
1946 | 42.27 | a | 43.43 | 49.65 | 58.82 | b | 70.60 | f | 69.18 | h | 80.21 | g | 82.58 | g | 72.08 | e | 56.11 | d | 46.47 | 42.41 | b | 51.40 | d | |||
1947 | 39.27 | e | 50.19 | a | 56.71 | 62.11 | b | 74.29 | 68.93 | 77.61 | h | 76.46 | c | 75.11 | b | 57.37 | d | 47.38 | a | 41.77 | 59.05 | a | ||||
1948 | 41.26 | 42.25 | a | 47.23 | 52.79 | b | 63.69 | e | 75.90 | 76.74 | 73.67 | a | 70.67 | 60.26 | 44.47 | 35.87 | 57.07 | |||||||||
1949 | 30.74 | 38.89 | 47.20 | f | 61.97 | 69.87 | 73.03 | 76.83 | a | 77.03 | 73.60 | 56.29 | 53.43 | 40.13 | 59.26 | a | ||||||||||
1950 | 25.55 | 37.00 | 43.81 | 53.50 | 65.13 | a | 70.70 | 79.81 | 81.65 | 75.13 | 55.03 | 45.33 | 43.16 | 56.32 | ||||||||||||
1951 | 36.61 | 43.54 | 45.19 | 63.60 | 66.23 | 75.83 | 80.55 | 80.03 | a | ----- | z | 57.87 | 46.59 | a | 37.13 | 57.56 | a | |||||||||
1952 | 33.42 | 43.07 | 46.52 | 62.93 | 67.74 | 67.63 | 82.39 | 79.81 | 79.03 | 71.90 | 45.77 | 37.00 | 59.77 | |||||||||||||
1953 | 46.84 | 47.29 | 50.71 | 55.43 | 60.94 | 64.77 | 79.84 | 75.97 | 73.80 | 62.77 | 49.80 | 44.73 | a | 59.41 | ||||||||||||
1954 | 37.94 | 43.71 | 48.61 | 56.90 | 66.52 | 65.17 | 74.84 | 70.94 | 70.07 | 60.87 | 53.03 | 37.00 | s | 58.96 | a | |||||||||||
1955 | 38.74 | 42.11 | 42.71 | g | 50.90 | 61.65 | 71.03 | 71.55 | 79.00 | 71.73 | 58.23 | 40.60 | 36.48 | 56.55 | a | |||||||||||
1956 | 36.68 | 35.69 | 44.42 | 60.67 | 69.97 | 67.20 | 82.06 | 77.84 | 71.83 | 55.00 | 43.50 | 38.84 | 56.97 | |||||||||||||
1957 | 28.61 | 42.00 | 47.90 | 59.20 | 67.23 | 71.80 | e | 76.50 | a | 75.07 | a | 78.70 | 57.00 | 48.67 | 43.55 | 58.02 | ||||||||||
1958 | 40.87 | 49.04 | e | 49.80 | f | 55.29 | b | 75.77 | a | 74.96 | e | 82.17 | a | 85.65 | 73.24 | a | 62.33 | g | 46.88 | d | 43.94 | 62.78 | b | |||
1959 | 40.19 | 40.44 | a | 49.67 | d | 57.76 | a | 62.27 | e | 70.24 | a | 83.89 | c | 79.00 | 70.64 | s | ----- | z | 45.46 | b | 38.66 | b | 56.76 | b | ||
1960 | 34.19 | d | 43.78 | k | 47.38 | j | 56.37 | k | 61.36 | t | 76.44 | e | 87.03 | a | 75.83 | a | 71.79 | b | 60.72 | m | 46.83 | l | 38.84 | l | 69.06 | g |
1961 | 42.62 | g | 46.17 | j | 50.26 | h | 56.25 | j | 65.21 | g | 81.20 | 83.81 | 87.23 | 68.50 | 58.08 | g | 45.10 | j | 39.09 | i | 80.18 | h | ||||
1962 | 39.81 | j | 45.39 | j | 48.71 | g | 61.77 | h | 58.90 | j | 76.29 | f | 80.47 | a | 76.45 | 73.93 | c | 61.35 | h | 49.47 | k | 43.53 | n | 76.95 | i | |
1963 | 38.00 | j | 50.42 | i | 52.76 | j | 52.45 | h | 67.64 | i | 70.58 | d | 73.71 | 78.52 | 77.57 | 62.50 | g | 46.68 | h | 38.00 | j | 75.09 | h | |||
1964 | 40.90 | j | 46.58 | j | 47.50 | i | 55.67 | i | 63.40 | k | 70.09 | h | 78.16 | 74.97 | 67.50 | 61.57 | h | 44.47 | k | 37.64 | i | 73.54 | i | |||
1965 | 38.10 | k | ----- | z | 52.70 | h | 62.36 | h | 64.90 | k | 76.35 | g | 83.80 | a | 78.13 | a | 69.03 | 62.83 | g | 49.45 | j | 37.81 | j | 76.99 | i | |
1966 | 36.00 | j | ----- | z | 46.13 | h | ----- | z | 73.29 | j | 73.12 | d | 81.70 | a | 83.77 | 78.17 | 62.96 | h | 49.16 | k | 41.82 | i | 79.19 | h | ||
1967 | 43.65 | k | 48.62 | l | 46.82 | i | 55.65 | j | 70.09 | i | 81.96 | e | 86.52 | 92.61 | 82.38 | a | 60.67 | j | 49.00 | j | 38.35 | k | 85.87 | h | ||
1968 | 38.73 | i | 49.85 | b | 54.55 | 59.54 | b | 69.16 | 74.92 | d | 84.74 | 76.10 | a | 74.26 | g | 58.77 | i | 46.11 | k | 33.16 | l | 66.98 | e | |||
1969 | 30.27 | i | 36.39 | j | 47.33 | m | 55.43 | 73.17 | b | 79.30 | 82.00 | 81.03 | a | 74.57 | 59.57 | c | 48.83 | a | 38.24 | f | 69.24 | d | ||||
1970 | 37.40 | f | 48.29 | d | 52.67 | g | 53.00 | r | 73.35 | e | 81.10 | 85.79 | b | 85.97 | a | 70.31 | d | 59.23 | a | 46.63 | 36.89 | c | 65.28 | c | ||
1971 | 37.97 | 44.12 | d | 44.60 | a | 57.62 | d | 68.26 | d | 67.07 | a | 84.43 | c | 88.23 | 73.93 | b | 58.52 | 45.43 | b | 37.00 | c | 58.93 | ||||
1972 | 37.74 | d | 42.22 | b | 53.83 | a | 52.70 | c | 75.19 | 75.93 | b | 85.74 | 87.88 | f | 70.08 | f | 62.62 | g | 47.24 | i | 36.00 | k | 60.48 | e | ||
1973 | 37.56 | o | 48.79 | i | 51.39 | 61.55 | h | 72.60 | f | 73.28 | a | ----- | z | 76.89 | l | 75.04 | g | 60.40 | p | 42.86 | h | 40.69 | o | 62.33 | j | |
1974 | 34.46 | e | 41.68 | 48.90 | b | 55.97 | a | 64.96 | e | 79.77 | 81.90 | 79.65 | k | 79.72 | a | 64.74 | 45.63 | 42.38 | b | 58.19 | a | |||||
1975 | 37.60 | a | 40.19 | a | 46.55 | 54.60 | 67.16 | 70.97 | 82.45 | 73.62 | b | 78.83 | 58.61 | 44.10 | a | 42.36 | c | 58.09 | ||||||||
1976 | 41.81 | 41.59 | b | 45.81 | 56.81 | i | 73.55 | 74.90 | 81.20 | a | 75.94 | 77.37 | 66.13 | 49.76 | a | 41.85 | k | 62.80 | b | |||||||
1977 | 36.62 | e | 43.68 | 45.13 | 60.77 | 56.65 | 73.97 | a | 78.90 | 90.10 | j | ----- | z | ----- | z | ----- | z | ----- | z | 56.53 | e | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.32 | 43.64 | 50.27 | 59.17 | 67.81 | 73.26 | 81.10 | 79.51 | 74.16 | 61.42 | 47.48 | 40.98 | 59.01 | |||||||||||||
S.D. | 4.87 | 4.29 | 4.63 | 4.28 | 4.70 | 4.27 | 3.43 | 4.54 | 4.19 | 4.04 | 3.41 | 3.35 | 1.38 | |||||||||||||
SKEW | -0.47 | -0.25 | 0.86 | 0.16 | -0.28 | 0.13 | -0.68 | 0.77 | -0.14 | 0.44 | 0.36 | 0.22 | -0.29 | |||||||||||||
MAX | 47.67 | 52.61 | 62.38 | 70.72 | 75.77 | 81.96 | 87.03 | 92.61 | 82.38 | 71.90 | 54.27 | 48.45 | 61.47 | |||||||||||||
MIN | 25.55 | 31.75 | 43.81 | 50.90 | 56.65 | 64.77 | 71.55 | 70.94 | 65.03 | 55.00 | 40.60 | 35.87 | 56.32 | |||||||||||||
YRS | 36 | 37 | 34 | 36 | 36 | 41 | 41 | 38 | 40 | 32 | 35 | 32 | 17 |