YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.92 | s | 80.55 | 74.77 | 62.29 | 45.53 | 39.58 | 60.54 | g | |||||
1914 | 39.94 | 41.64 | 54.39 | 56.77 | 66.60 | a | 71.03 | a | 77.60 | a | 84.00 | b | 69.53 | 61.00 | 49.90 | 33.81 | 58.85 | |||||||||
1915 | 36.71 | 41.71 | 52.71 | 60.30 | 57.67 | a | 70.58 | d | 78.45 | 86.03 | 71.43 | 62.70 | h | 42.47 | 38.13 | 57.84 | a | |||||||||
1916 | 29.32 | 46.52 | 53.10 | a | 59.10 | 58.94 | 70.90 | 76.74 | 80.29 | 76.37 | 66.13 | a | 43.17 | 32.63 | a | 57.77 | ||||||||||
1917 | 31.32 | 41.89 | 42.00 | 49.40 | 58.84 | 72.80 | 86.77 | 84.68 | 76.30 | 68.32 | 51.40 | 45.06 | 59.07 | |||||||||||||
1918 | 43.00 | 40.89 | 50.48 | 58.33 | 63.97 | 83.70 | 80.81 | 79.84 | 78.53 | 66.06 | 44.47 | 38.48 | 60.71 | |||||||||||||
1919 | 41.32 | 40.36 | 47.74 | 56.86 | a | 67.52 | 73.97 | 85.65 | 85.26 | 70.80 | 56.52 | 43.27 | 34.60 | a | 58.65 | |||||||||||
1920 | 40.71 | 46.48 | 44.13 | 51.47 | 63.42 | 70.37 | 81.94 | 84.35 | 71.33 | 54.61 | 43.87 | 36.13 | 57.40 | |||||||||||||
1921 | 36.94 | 42.07 | 49.71 | 53.13 | 61.52 | 71.77 | 82.39 | 80.94 | 69.67 | 65.90 | a | 48.93 | 36.52 | 58.29 | ||||||||||||
1922 | 30.13 | 35.36 | 41.13 | 49.80 | 64.17 | b | 77.67 | 85.84 | 78.90 | a | 77.90 | 60.89 | d | 43.47 | 35.73 | a | 56.75 | |||||||||
1923 | 37.13 | 41.41 | a | 49.00 | 53.87 | 62.65 | 69.95 | h | 80.90 | 80.94 | 74.90 | 57.74 | 46.39 | g | 33.13 | 57.17 | b | |||||||||
1924 | 35.45 | 42.29 | a | 43.83 | g | 61.27 | 74.71 | 76.83 | 83.06 | 81.03 | 73.30 | 55.90 | 46.50 | 31.67 | a | 60.18 | a | |||||||||
1925 | 39.42 | 43.18 | 52.00 | 56.90 | 65.61 | 72.83 | 84.29 | 78.48 | 65.46 | b | 61.53 | a | 45.20 | 40.93 | a | 58.82 | ||||||||||
1926 | 40.42 | 44.89 | 60.43 | a | 59.44 | e | 64.68 | 80.47 | 84.06 | 79.72 | b | 68.00 | 62.16 | 50.83 | 37.94 | 61.09 | ||||||||||
1927 | 38.13 | 39.71 | 47.23 | 53.33 | 59.00 | 72.30 | c | 80.64 | c | 77.80 | a | 67.58 | d | 62.64 | c | 45.35 | g | 34.60 | a | 57.54 | a | |||||
1928 | 41.27 | a | 43.14 | 49.61 | 52.00 | 71.26 | 68.33 | 82.42 | 79.42 | 72.86 | a | 59.94 | 45.80 | 37.77 | 58.65 | |||||||||||
1929 | 35.42 | 40.82 | 49.40 | a | 50.07 | 66.23 | a | 69.87 | 82.60 | a | 85.19 | 72.77 | 64.88 | e | 54.43 | 45.89 | c | 59.80 | ||||||||
1930 | 30.58 | 45.07 | 53.42 | 59.53 | 61.29 | 74.60 | 84.16 | 82.55 | 70.40 | 61.13 | 47.93 | 36.84 | 58.96 | |||||||||||||
1931 | 38.39 | 44.11 | 50.58 | 61.50 | 72.90 | 71.57 | 88.87 | 86.52 | 70.37 | 61.45 | 43.37 | 34.23 | 60.32 | |||||||||||||
1932 | 32.94 | 39.03 | 48.77 | 54.90 | 63.65 | 76.70 | 78.77 | 80.00 | 80.47 | 63.84 | 50.80 | 33.13 | 58.58 | |||||||||||||
1933 | 33.13 | 35.39 | 44.71 | 57.63 | 55.55 | 72.70 | 85.52 | 84.03 | 70.40 | 69.48 | 53.27 | 42.32 | 58.68 | |||||||||||||
1934 | 44.32 | ----- | z | ----- | z | 59.80 | y | 69.00 | 72.57 | 83.23 | 86.65 | 76.70 | 63.52 | 47.83 | 40.10 | 64.88 | c | |||||||||
1935 | 36.74 | 43.82 | 44.57 | a | 56.97 | 67.35 | 74.10 | 80.90 | 85.57 | a | 81.21 | a | 60.87 | a | 48.83 | 44.13 | 60.42 | |||||||||
1936 | 40.20 | a | 43.41 | 52.38 | g | 63.33 | 74.16 | 76.23 | 82.60 | a | 85.06 | 75.20 | 70.74 | 54.70 | 39.39 | 64.09 | a | |||||||||
1937 | 27.00 | 37.82 | 48.06 | 53.97 | 69.23 | 70.52 | a | 81.13 | 80.19 | 74.20 | 64.35 | 48.83 | 44.48 | 58.32 | ||||||||||||
1938 | 42.48 | 38.11 | 43.06 | 57.83 | 66.10 | a | 74.43 | 83.74 | 82.61 | 77.79 | a | 59.83 | a | 43.27 | 40.00 | 59.11 | ||||||||||
1939 | 37.93 | a | 39.08 | b | 51.60 | a | 65.17 | 67.90 | 72.40 | 83.42 | 86.35 | 75.03 | 61.97 | 52.33 | 42.32 | 61.29 | ||||||||||
1940 | 41.35 | 43.18 | a | 52.96 | c | 58.00 | a | 70.60 | a | 80.73 | 80.57 | c | 86.48 | 70.29 | i | ----- | z | ----- | z | ----- | z | 64.24 | d | |||
1941 | 38.47 | n | 44.96 | 55.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.48 | 54.29 | b | 43.59 | d | 52.07 | g | |||
1942 | 40.42 | 42.71 | 52.35 | 57.83 | 63.03 | 72.80 | 84.87 | 87.00 | 80.33 | 69.13 | 47.13 | 42.19 | 61.65 | |||||||||||||
1943 | 41.48 | 48.56 | a | 52.77 | 61.47 | 67.90 | 69.67 | 86.82 | c | 82.04 | c | 85.31 | a | 60.45 | 52.48 | a | 43.10 | a | 62.67 | |||||||
1944 | 38.32 | 42.69 | 51.52 | 54.90 | 68.90 | 69.28 | a | 84.37 | a | 84.00 | d | 79.07 | 69.90 | 46.40 | 42.45 | 60.98 | ||||||||||
1945 | 42.08 | g | 46.07 | 46.90 | 58.60 | 65.10 | 75.77 | 88.23 | 85.90 | 76.80 | 73.08 | g | 43.27 | 38.29 | 62.49 | b | ||||||||||
1946 | 41.87 | 43.50 | 48.84 | 63.34 | a | 70.65 | 69.50 | 84.68 | 86.97 | 75.10 | 58.84 | 48.60 | 46.42 | 61.53 | ||||||||||||
1947 | 44.30 | a | 52.07 | 59.07 | a | 63.50 | 74.77 | 69.34 | a | 80.26 | 80.00 | 77.69 | a | 61.20 | a | 47.83 | 43.32 | 62.78 | ||||||||
1948 | 48.65 | 42.76 | 45.65 | 49.97 | 61.74 | 76.63 | 78.94 | 79.80 | a | 73.22 | c | 71.38 | r | 49.27 | ----- | z | 60.66 | b | ||||||||
1949 | ----- | z | 44.00 | j | 48.74 | 61.14 | i | ----- | z | 77.20 | 83.12 | e | 83.25 | c | 79.73 | 63.41 | b | 59.83 | 41.68 | l | 70.76 | e | ||||
1950 | 34.69 | b | 45.36 | 47.58 | ----- | z | 70.52 | 74.93 | 89.88 | f | 87.52 | 71.10 | 56.48 | 48.00 | h | 40.65 | 58.76 | c | ||||||||
1951 | 31.13 | a | ----- | z | ----- | z | 59.27 | 63.58 | 78.97 | 85.74 | l | 85.00 | h | 84.09 | h | 65.81 | d | 50.77 | ----- | z | 58.25 | f | ||||
1952 | 35.86 | b | 42.39 | a | 45.28 | b | 64.33 | 69.64 | f | 71.53 | 88.58 | e | 85.12 | e | 83.88 | f | 69.19 | d | 46.40 | e | 34.90 | j | 60.96 | c | ||
1953 | 39.18 | c | 45.46 | 50.10 | 57.34 | a | 58.80 | a | 68.76 | e | 87.31 | e | 77.78 | d | 82.83 | 65.43 | a | 50.17 | 45.13 | 60.69 | ||||||
1954 | 39.55 | 49.57 | 48.03 | 62.89 | c | 72.24 | b | 71.20 | 87.45 | b | 76.74 | 71.55 | a | 62.00 | b | 52.70 | 38.87 | 61.07 | ||||||||
1955 | 36.29 | 40.68 | 47.06 | 49.38 | a | 65.93 | a | 77.40 | 80.97 | 87.66 | b | 75.21 | a | 65.06 | 44.45 | a | 38.76 | b | 59.07 | |||||||
1956 | 41.46 | g | 38.72 | k | 47.94 | 61.62 | a | 69.87 | a | 73.96 | e | 85.29 | 83.68 | 80.37 | c | 61.58 | 52.45 | j | 47.31 | b | 67.96 | c | ||||
1957 | 34.06 | 44.38 | b | 48.62 | b | 58.40 | 66.13 | 77.40 | 82.58 | 80.52 | f | 78.30 | 56.89 | d | 47.00 | c | 44.52 | 58.03 | a | |||||||
1958 | 40.55 | 46.11 | a | 45.16 | 54.77 | 72.86 | b | 72.70 | g | 83.48 | 86.66 | b | 73.27 | 69.65 | 50.82 | b | 47.32 | 60.97 | a | |||||||
1959 | 41.43 | c | 42.36 | 53.16 | 63.43 | 61.41 | d | 74.27 | 87.39 | 81.58 | 69.43 | 62.81 | d | 55.69 | a | 43.67 | a | 61.39 | ||||||||
1960 | 37.06 | 41.28 | 52.81 | 54.83 | 58.08 | e | 79.64 | b | 89.10 | 81.17 | a | 80.20 | 66.32 | c | 45.23 | 43.00 | 60.73 | |||||||||
1961 | 45.35 | 44.43 | 45.94 | 57.73 | 61.71 | 80.07 | 85.45 | 86.65 | 71.17 | 60.30 | d | 47.33 | 37.97 | 60.34 | ||||||||||||
1962 | 38.32 | 41.00 | 43.77 | 62.80 | 59.39 | 75.50 | 83.29 | 79.45 | 78.75 | b | 63.62 | b | 51.40 | 45.06 | 60.20 | |||||||||||
1963 | 44.55 | 50.64 | 48.74 | 46.97 | 66.28 | b | 71.67 | 77.19 | d | 81.10 | 78.77 | 62.16 | 44.56 | e | 41.48 | 59.51 | ||||||||||
1964 | 36.37 | a | 41.97 | 44.45 | 54.67 | 61.58 | 68.65 | d | 81.70 | d | 80.74 | 72.73 | 71.25 | c | 44.23 | 38.48 | 58.07 | |||||||||
1965 | 38.97 | b | 46.68 | 52.42 | 56.17 | 63.29 | 73.13 | 81.45 | 78.06 | 73.03 | 73.62 | j | 49.53 | 37.48 | 59.11 | a | ||||||||||
1966 | 38.45 | 41.57 | 50.53 | a | 62.20 | j | 75.08 | g | 71.46 | d | 79.28 | b | 85.11 | d | 76.00 | i | 65.33 | j | 48.87 | g | 41.48 | h | 61.07 | f | ||
1967 | 40.55 | i | 47.86 | g | 45.76 | f | 45.35 | g | 67.21 | c | 73.50 | h | 84.05 | k | 89.30 | h | 82.35 | j | 62.95 | k | 52.26 | c | 34.32 | f | 59.74 | j |
1968 | 39.03 | a | 49.08 | d | ----- | z | 58.04 | b | 63.37 | d | 74.27 | d | 85.17 | m | ----- | z | 76.95 | j | 62.48 | d | 43.50 | b | ----- | z | 55.68 | e |
1969 | ----- | z | 38.91 | e | 47.71 | c | 55.14 | b | 69.65 | e | 70.97 | a | 82.50 | k | 82.09 | h | 77.88 | d | 54.65 | e | 53.50 | n | 42.21 | c | 57.14 | d |
1970 | 39.39 | 48.46 | 49.42 | 50.13 | 66.55 | 76.27 | 84.03 | 85.58 | 71.50 | 60.81 | 48.77 | d | 35.92 | e | 59.74 | |||||||||||
1971 | 41.10 | 45.26 | a | 42.71 | 52.97 | 61.23 | 66.50 | f | 82.32 | 85.03 | 69.57 | 58.55 | 49.06 | l | 35.21 | g | 59.86 | c | ||||||||
1972 | 37.17 | b | 43.66 | 52.77 | 51.17 | 66.65 | 76.60 | 84.42 | 87.23 | i | 67.39 | l | 62.35 | 43.77 | ----- | z | 57.62 | c | ||||||||
1973 | 37.36 | c | 43.89 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.23 | 43.20 | 40.90 | k | 46.42 | h | ||
1974 | 35.74 | 41.96 | 46.73 | a | 51.63 | 61.19 | 77.67 | f | 79.23 | i | 83.40 | p | 80.58 | k | 67.58 | 50.50 | 44.53 | p | 50.76 | e | ||||||
1975 | 41.42 | g | 39.43 | 42.23 | 47.17 | 64.45 | 72.27 | 80.05 | j | 77.92 | e | 80.00 | 56.90 | 45.43 | 42.94 | m | 58.42 | c | ||||||||
1976 | 44.12 | g | 44.17 | 45.65 | 51.07 | 66.65 | 68.64 | b | 80.71 | 72.82 | i | ----- | z | 69.39 | 58.80 | 47.90 | a | 59.22 | c | |||||||
1977 | 38.18 | c | ----- | z | ----- | z | 61.57 | 55.13 | 78.50 | d | ----- | z | ----- | z | 59.80 | y | 61.80 | k | 49.38 | f | ----- | z | 58.34 | h | ||
1978 | ----- | z | 45.10 | h | 55.00 | o | 52.35 | j | 61.56 | m | 73.53 | k | 83.40 | p | 79.61 | h | 66.16 | k | 70.90 | k | 43.77 | q | 36.65 | k | ----- | z |
1979 | 37.36 | i | 40.71 | k | 51.65 | n | 53.15 | j | 67.74 | h | 75.33 | i | 81.56 | m | 76.05 | i | 77.83 | r | 59.55 | i | 45.50 | 43.37 | d | 44.44 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 38.15 | 43.16 | 48.94 | 56.56 | 65.26 | 73.79 | 83.15 | 82.78 | 74.83 | 62.84 | 48.27 | 40.15 | 59.77 | |||||||||||||
S.D. | 4.21 | 3.39 | 4.06 | 4.71 | 4.77 | 3.59 | 3.03 | 3.12 | 4.34 | 4.18 | 4.14 | 4.27 | 1.46 | |||||||||||||
SKEW | -0.34 | 0.22 | 0.37 | -0.14 | 0.04 | 0.55 | -0.01 | -0.13 | 0.12 | 0.14 | 0.67 | -0.12 | 0.11 | |||||||||||||
MAX | 48.65 | 52.07 | 60.43 | 65.17 | 74.77 | 83.70 | 89.10 | 87.66 | 85.31 | 71.25 | 59.83 | 47.90 | 62.78 | |||||||||||||
MIN | 27.00 | 35.36 | 41.13 | 46.97 | 55.13 | 68.33 | 76.74 | 76.74 | 65.46 | 54.61 | 42.47 | 31.67 | 56.75 | |||||||||||||
YRS | 56 | 58 | 56 | 57 | 59 | 57 | 54 | 54 | 53 | 57 | 57 | 52 | 35 |