YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 67.77 | 71.97 | 79.00 | a | 82.71 | 69.23 | 39.55 | 37.38 | a | 21.73 | a | 58.67 | d | |||||
1926 | 24.68 | 27.86 | 36.77 | e | 57.85 | d | 74.71 | n | 71.36 | e | 82.35 | k | 81.59 | n | 63.17 | r | 48.68 | l | 25.77 | 16.45 | 37.25 | e | ||||
1927 | 16.55 | 18.64 | 36.45 | 49.97 | 56.68 | 74.40 | 76.77 | 77.55 | 69.93 | 58.03 | 27.70 | 7.65 | 47.53 | |||||||||||||
1928 | 20.61 | 28.48 | 36.06 | 49.20 | 73.06 | 70.83 | 79.55 | 78.19 | 65.80 | 53.87 | 41.33 | f | 28.45 | 53.10 | a | |||||||||||
1929 | 3.97 | 12.43 | 39.39 | 53.10 | 62.29 | 75.17 | 84.71 | 84.58 | 65.03 | 57.23 | 28.27 | 16.06 | 48.52 | |||||||||||||
1930 | 5.52 | 27.00 | 34.23 | 58.50 | 62.26 | 75.20 | 87.29 | 86.10 | 71.03 | 48.39 | 37.63 | 24.52 | 51.47 | |||||||||||||
1931 | 24.71 | 32.39 | 34.10 | 56.53 | 64.03 | 79.67 | 84.32 | 77.87 | 74.86 | a | 59.13 | 38.63 | 25.26 | 54.29 | ||||||||||||
1932 | 16.77 | 20.21 | 25.06 | 51.57 | 67.42 | 77.97 | 83.26 | 81.90 | 71.73 | 46.32 | 30.60 | 20.58 | 49.45 | |||||||||||||
1933 | 18.87 | 15.50 | 35.35 | 48.20 | 66.81 | 83.47 | 84.16 | 84.10 | 75.30 | 52.00 | 33.43 | 15.23 | 51.03 | |||||||||||||
1934 | 22.16 | 22.79 | 35.23 | 53.17 | 78.10 | 75.37 | 85.68 | 80.81 | 64.60 | 57.77 | 40.20 | 18.39 | 52.85 | |||||||||||||
1935 | 8.29 | 30.64 | 33.16 | 45.20 | 59.87 | 70.13 | 84.48 | 76.29 | 69.00 | 57.07 | a | 24.57 | 17.29 | 48.00 | ||||||||||||
1936 | -0.39 | -3.97 | 30.77 | 45.18 | b | 76.58 | 77.97 | 95.39 | 83.26 | 71.63 | 53.68 | 34.17 | 21.16 | 48.79 | ||||||||||||
1937 | -1.26 | 12.50 | 30.39 | 46.60 | 67.13 | 72.50 | 80.23 | 85.29 | 70.30 | 52.65 | 31.45 | a | 17.10 | 47.07 | ||||||||||||
1938 | 12.97 | 15.96 | 44.74 | 55.20 | 60.19 | 74.60 | 81.74 | 84.58 | 74.47 | 62.06 | 32.67 | 22.65 | 51.82 | |||||||||||||
1939 | 18.71 | 6.00 | 32.81 | 51.10 | 74.71 | 71.67 | 87.55 | 85.06 | 72.13 | 49.65 | 46.70 | 34.87 | 52.58 | |||||||||||||
1940 | 11.55 | 20.72 | 24.87 | 44.20 | 65.77 | 75.70 | 85.58 | 76.29 | 76.23 | 60.19 | 28.83 | 25.55 | 49.62 | |||||||||||||
1941 | 16.77 | 15.43 | 29.81 | 52.93 | 68.35 | 74.77 | 84.35 | 80.52 | 65.90 | 55.03 | 36.47 | 29.00 | 50.78 | |||||||||||||
1942 | 27.23 | 20.36 | 38.48 | 54.83 | 60.87 | 70.23 | 79.42 | 78.16 | 64.10 | 58.77 | 37.83 | 15.74 | 50.50 | |||||||||||||
1943 | 5.71 | 22.32 | 26.39 | 55.80 | 61.74 | 72.63 | 86.06 | 80.74 | 68.90 | 61.77 | 34.17 | 30.61 | 50.57 | |||||||||||||
1944 | 30.16 | 22.07 | 27.29 | 51.83 | 70.45 | 75.83 | 83.16 | 77.10 | 65.73 | 61.10 | 33.43 | 22.26 | 51.70 | |||||||||||||
1945 | 17.00 | 22.61 | 44.55 | 47.77 | 58.97 | 69.60 | 80.65 | 79.35 | 66.33 | 57.13 | 29.80 | 13.03 | 48.90 | |||||||||||||
1946 | 15.77 | 17.86 | 44.29 | 59.60 | 66.80 | f | 76.63 | 84.42 | 79.29 | 66.37 | 51.29 | 35.87 | 20.00 | b | 50.13 | a | ||||||||||
1947 | 25.19 | 16.54 | 31.81 | 49.13 | 61.81 | 68.23 | 83.40 | a | 83.90 | 67.97 | 63.52 | 27.80 | 19.25 | c | 49.88 | |||||||||||
1948 | 15.69 | b | 14.00 | a | 25.35 | 47.79 | a | 68.29 | 74.07 | 79.35 | 81.61 | 78.07 | a | 59.90 | 35.87 | 19.10 | 49.92 | |||||||||
1949 | 12.31 | b | 12.19 | b | 29.06 | 58.70 | 67.77 | a | 75.43 | 80.68 | 83.74 | 70.03 | 53.74 | 43.53 | 16.84 | 50.34 | ||||||||||
1950 | -2.23 | 18.93 | a | 27.90 | a | 39.20 | 58.66 | b | 74.60 | 76.94 | 75.90 | a | 69.97 | 56.52 | 29.57 | 15.10 | 45.09 | |||||||||
1951 | 10.58 | 18.39 | 24.77 | 49.77 | 70.97 | 69.13 | 81.16 | 74.26 | 63.17 | 51.13 | 30.20 | 12.77 | 46.36 | |||||||||||||
1952 | 11.23 | 25.45 | 28.74 | 61.00 | 68.74 | 77.10 | 79.42 | 79.52 | 74.67 | 54.55 | 40.03 | 24.10 | 52.04 | |||||||||||||
1953 | 19.48 | 26.11 | 35.23 | 47.87 | 64.06 | 73.80 | 79.84 | 83.13 | 70.07 | a | 65.26 | 44.23 | 25.74 | 52.90 | ||||||||||||
1954 | 7.48 | 35.64 | 32.52 | 51.13 | 62.35 | 72.27 | 82.42 | 77.68 | 64.37 | 54.81 | d | 43.37 | 27.74 | 50.98 | ||||||||||||
1955 | 18.00 | 15.25 | 26.90 | 61.37 | 71.10 | 73.97 | 82.53 | a | 84.45 | 70.38 | a | 60.29 | 25.37 | 12.52 | 50.18 | |||||||||||
1956 | 14.48 | 16.07 | 26.52 | 41.87 | 64.58 | 79.43 | 76.48 | 78.71 | 67.10 | 63.93 | b | 37.40 | 24.29 | 49.24 | ||||||||||||
1957 | 10.94 | 19.46 | 34.97 | 51.73 | 67.73 | a | 72.13 | 84.97 | 78.16 | 64.83 | 52.94 | 35.10 | 29.23 | 50.18 | ||||||||||||
1958 | 25.87 | a | 20.18 | 38.74 | 56.63 | 70.84 | 69.53 | 75.97 | 81.19 | 71.63 | 60.13 | 36.10 | 17.45 | 52.02 | ||||||||||||
1959 | 9.13 | a | 16.11 | 39.23 | 55.03 | 65.16 | 78.43 | 83.68 | 85.13 | 69.43 | 46.77 | a | 26.57 | 29.65 | 50.36 | |||||||||||
1960 | 16.26 | 19.76 | 23.87 | 49.13 | 68.42 | 74.20 | 83.39 | 81.87 | 71.83 | 57.61 | 37.67 | 20.03 | 50.34 | |||||||||||||
1961 | 18.43 | a | 25.18 | 40.23 | 45.62 | a | 66.94 | 82.93 | 79.55 | 85.74 | 64.97 | 57.03 | 38.87 | 15.81 | 51.77 | |||||||||||
1962 | 12.94 | 12.89 | 27.16 | 49.07 | 61.48 | 73.03 | 76.55 | 81.68 | 65.93 | 60.48 | 39.63 | 25.00 | 48.82 | |||||||||||||
1963 | 11.16 | 20.68 | 45.10 | 53.47 | 63.97 | 78.90 | 83.16 | 81.19 | 75.00 | 69.45 | 42.97 | 15.39 | 53.37 | |||||||||||||
1964 | 23.19 | 28.10 | 30.00 | 53.40 | 71.84 | 73.80 | 83.52 | 76.13 | 66.63 | 57.65 | 35.57 | 10.19 | 50.83 | |||||||||||||
1965 | 7.42 | 18.86 | 24.03 | 47.70 | 64.06 | 73.03 | 77.32 | ----- | z | 55.53 | 59.06 | 33.60 | 27.29 | 44.36 | a | |||||||||||
1966 | 1.19 | 16.32 | 36.13 | 43.73 | 63.68 | 75.00 | 81.47 | a | 75.84 | 71.23 | 56.45 | 29.00 | 19.29 | 47.44 | ||||||||||||
1967 | 17.68 | 15.07 | a | 34.13 | 45.48 | a | 61.23 | 73.67 | 80.87 | 82.32 | 74.47 | 54.00 | 35.03 | 20.97 | 49.58 | |||||||||||
1968 | 13.52 | 17.38 | 42.23 | 53.60 | 62.74 | 72.40 | 78.45 | 76.52 | 69.10 | 56.77 | 36.40 | 14.61 | 49.48 | |||||||||||||
1969 | 4.13 | 18.14 | 25.23 | 53.37 | 67.71 | 68.20 | 78.45 | 85.87 | a | 70.77 | 47.33 | a | 38.67 | 23.87 | 48.48 | |||||||||||
1970 | 7.48 | 22.25 | 26.06 | 46.43 | 61.42 | 78.72 | a | 82.48 | 83.00 | 70.47 | 55.39 | 31.97 | 17.13 | 48.57 | ||||||||||||
1971 | 6.19 | 20.04 | 31.94 | 54.27 | 66.03 | 76.20 | 75.90 | 81.74 | 69.27 | 56.39 | 32.20 | 18.58 | 49.06 | |||||||||||||
1972 | 11.65 | 13.21 | 32.10 | 47.00 | 71.00 | a | 77.20 | 76.68 | 82.23 | 66.83 | 52.48 | 32.13 | 12.48 | 47.92 | ||||||||||||
1973 | 21.58 | 27.64 | 41.23 | 53.53 | 69.00 | 77.37 | 81.50 | a | 84.16 | 66.83 | 60.27 | a | 30.47 | 14.48 | 52.34 | |||||||||||
1974 | 9.00 | 19.00 | 27.10 | 50.07 | 60.26 | 76.23 | 84.10 | 74.13 | 67.60 | 61.63 | a | 36.83 | 27.53 | a | 49.46 | |||||||||||
1975 | 19.68 | 18.68 | 28.27 | a | 41.21 | a | 67.90 | 73.97 | ----- | z | 78.55 | 66.83 | 58.65 | 39.90 | 23.06 | 46.97 | a | |||||||||
1976 | 17.35 | 29.21 | 32.10 | 58.17 | 72.13 | 78.63 | 82.94 | 85.81 | 77.47 | 52.84 | 34.77 | 17.67 | a | 53.26 | ||||||||||||
1977 | 4.32 | 27.39 | 41.48 | 65.17 | a | 77.35 | 77.43 | 81.77 | 72.74 | 63.87 | 58.19 | 33.10 | 10.74 | 51.13 | ||||||||||||
1978 | 3.42 | 12.63 | a | 31.65 | 50.70 | 71.81 | 76.37 | 80.77 | a | 82.13 | 74.60 | 58.19 | 31.20 | 14.26 | 48.98 | |||||||||||
1979 | -0.17 | b | 5.00 | 27.00 | 39.37 | 58.48 | 74.80 | 80.13 | 76.68 | 75.17 | 55.00 | a | 31.00 | 30.13 | 46.05 | |||||||||||
1980 | 13.42 | 16.83 | 29.16 | 64.23 | 75.74 | 77.17 | 83.32 | 75.65 | 68.07 | 52.48 | 39.83 | 21.10 | a | 51.42 | ||||||||||||
1981 | 22.16 | 27.71 | 44.52 | 60.13 | 67.65 | 71.27 | 79.77 | 81.00 | 71.37 | 54.00 | 44.50 | 17.39 | 53.46 | |||||||||||||
1982 | 0.52 | b | 17.81 | a | 29.68 | c | 52.30 | 66.35 | 69.86 | a | 78.52 | b | 76.87 | a | 70.17 | a | 53.00 | a | 31.97 | 26.48 | b | 47.79 | ||||
1983 | 24.10 | 26.82 | 32.48 | 50.00 | 64.32 | 75.97 | a | 83.84 | 87.72 | b | 69.00 | a | 54.37 | a | 34.30 | 5.26 | 50.68 | |||||||||
1984 | 18.45 | b | 30.48 | 29.97 | 54.57 | 67.55 | 75.27 | 81.38 | b | 84.97 | 66.73 | 54.71 | 36.87 | 17.10 | a | 51.50 | ||||||||||
1985 | 15.06 | 20.07 | 40.61 | 60.87 | 73.47 | a | 70.45 | a | 81.28 | b | 74.73 | a | 61.30 | 54.03 | 22.37 | 12.63 | a | 48.91 | ||||||||
1986 | 21.42 | 19.92 | c | 42.74 | 52.45 | a | 70.23 | 78.72 | a | 80.50 | a | 77.16 | 64.67 | 56.48 | 29.03 | 25.35 | 51.56 | |||||||||
1987 | 22.97 | a | 30.07 | a | 32.77 | 64.90 | a | 72.94 | 81.27 | 81.59 | b | 78.47 | a | 72.45 | a | 53.53 | a | 42.40 | 25.30 | a | 54.89 | |||||
1988 | 12.73 | a | 18.66 | 36.80 | a | 60.63 | 74.32 | 84.48 | a | 85.32 | 81.40 | a | 68.67 | 55.06 | 32.93 | 21.61 | 52.72 | |||||||||
1989 | 21.52 | 10.82 | 26.79 | b | 51.17 | a | 68.71 | 73.90 | a | 85.71 | 79.81 | 69.83 | 57.13 | a | 30.93 | 13.39 | 49.14 | |||||||||
1990 | 27.52 | 26.41 | a | 36.55 | 51.40 | 65.68 | 73.40 | 76.55 | 79.83 | a | 70.67 | 55.65 | 38.30 | 17.77 | a | 51.64 | ||||||||||
1991 | 14.24 | b | 29.07 | 36.54 | c | 56.10 | 68.29 | c | 74.40 | 76.06 | 80.37 | a | 66.07 | c | 47.27 | a | 25.37 | c | 22.52 | b | 49.69 | |||||
1992 | 24.07 | a | 28.37 | b | 37.87 | 47.62 | a | 70.90 | b | 69.43 | 71.29 | 72.97 | 64.74 | c | 53.30 | a | 28.30 | 12.92 | e | 48.48 | ||||||
1993 | 14.00 | a | 16.30 | a | 31.23 | a | 52.14 | a | 66.07 | a | 67.93 | 71.90 | 74.03 | a | 63.07 | a | 53.61 | 31.86 | b | 18.65 | 46.73 | |||||
1994 | -0.58 | 10.67 | a | 37.39 | c | 51.48 | a | 69.48 | 73.97 | 73.65 | 74.03 | 70.63 | 55.33 | a | 37.10 | a | 24.59 | b | 48.15 | |||||||
1995 | 14.55 | b | 18.86 | 29.20 | a | 43.60 | 62.65 | 77.00 | 75.86 | b | 81.13 | a | 67.40 | 48.40 | a | 25.96 | b | 14.59 | b | 46.60 | ||||||
1996 | 5.26 | 17.57 | a | 22.68 | 43.07 | 63.42 | 77.10 | 75.10 | 80.45 | 68.93 | 53.00 | 21.96 | c | 10.19 | 44.89 | |||||||||||
1997 | 7.28 | b | ----- | z | 27.45 | 45.20 | 62.42 | 78.37 | 77.61 | 77.26 | ----- | z | 53.73 | a | 28.20 | 29.71 | 48.72 | b | ||||||||
1998 | 14.86 | b | 30.86 | 30.87 | a | 59.57 | 69.77 | 69.63 | 79.48 | 81.68 | 75.33 | 54.13 | 32.33 | 20.10 | b | 51.55 | ||||||||||
1999 | 11.13 | a | 27.93 | a | 35.74 | 52.83 | a | 64.13 | 72.41 | a | 78.87 | 77.97 | 63.85 | c | 54.66 | b | 47.20 | 32.90 | b | 51.63 | ||||||
2000 | 18.32 | c | 31.82 | a | 44.84 | 52.97 | a | ----- | z | ----- | z | 78.03 | a | 78.83 | a | 68.93 | 56.83 | a | 32.60 | e | 7.07 | a | 47.02 | b | ||
2001 | 23.10 | a | 11.46 | 31.31 | b | 52.31 | a | 67.42 | 73.07 | 79.93 | c | ----- | z | ----- | z | 55.70 | a | ----- | z | 24.39 | 46.52 | c | ||||
2002 | 21.71 | 33.00 | b | 26.16 | 49.00 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.47 | h | ||
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 14.14 | 20.41 | 33.02 | 51.80 | 66.81 | 74.64 | 80.92 | 80.16 | 69.01 | 55.62 | 34.08 | 19.96 | 50.05 | |||||||||||||
S.D. | 7.85 | 7.21 | 6.00 | 5.82 | 4.81 | 3.57 | 3.89 | 3.64 | 4.08 | 4.67 | 5.64 | 6.35 | 2.15 | |||||||||||||
SKEW | -0.23 | -0.32 | 0.37 | 0.15 | 0.21 | 0.35 | 0.29 | -0.07 | -0.15 | -0.26 | 0.15 | 0.05 | -0.19 | |||||||||||||
MAX | 30.16 | 35.64 | 45.10 | 65.17 | 78.10 | 84.48 | 95.39 | 87.72 | 78.07 | 69.45 | 47.20 | 34.87 | 54.89 | |||||||||||||
MIN | -2.23 | -3.97 | 22.68 | 39.20 | 56.68 | 67.93 | 71.29 | 72.74 | 55.53 | 39.55 | 21.96 | 5.26 | 44.89 | |||||||||||||
YRS | 77 | 76 | 77 | 77 | 74 | 76 | 75 | 74 | 74 | 76 | 75 | 77 | 68 |