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| August |
|---|
| Very Wet: |
| Very Dry: |
| 1895 | 1896 | 1897 | 1898 | 1899 | 1900 | 1901 | 1902 | 1903 | 1904 | 1905 | 1906 | 1907 | 1908 | 1909 | 1910 | 1911 | 1912 | 1913 | 1914 | 1915 | 1916 | 1917 | 1918 | 1919 | 1920 | 1921 | 1922 | 1923 | 1924 | 1925 | 1926 | 1927 | 1928 | 1929 | 1930 | 1931 | 1932 | 1933 | 1934 | 1935 | 1936 | 1937 | 1938 | 1939 | 1940 | 1941 | 1942 | 1943 | 1944 | 1945 | 1946 | 1947 | 1948 | 1949 | 1950 | 1951 | 1952 | 1953 | 1954 | 1955 | 1956 | 1957 | 1958 | 1959 | 1960 | 1961 | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5.14% | 0.81% | 2.44% | 10.11% | 5.60% | 10.57% | 17.73% | 6.57% | 10.97% | 7.29% | 2.65% | 19.76% | 2.68% | 9.61% | 9.57% | 3.14% | 9.27% | 13.97% | 0.00% | 16.48% | 27.19% | 3.92% | 5.29% | 4.73% | 1.29% | 15.47% | 9.49% | 7.97% | 8.34% | 4.44% | 1.70% | 16.05% | 17.49% | 12.48% | 3.77% | 14.81% | 9.92% | 8.31% | 15.82% | 3.77% | 5.60% | 4.88% | 6.42% | 1.99% | 6.62% | 12.51% | 15.39% | 16.98% | 3.57% | 16.23% | 11.73% | 6.89% | 7.99% | 2.65% | 6.89% | 9.14% | 14.89% | 5.52% | 4.68% | 12.69% | 13.21% | 4.56% | 7.36% | 2.03% | 7.63% | 8.81% | 9.73% | 2.47% | 9.18% | 9.27% | 16.57% | 17.13% | 7.70% | 25.50% | 3.89% | 4.55% | 13.42% | 12.07% | 0.22% | 22.75% | 17.09% | 14.37% | 24.80% | 7.79% | 15.19% | 17.24% | 11.48% | 5.87% | 19.47% | 14.26% | 13.46% | 6.06% | 9.40% | 8.99% | 8.94% | 8.96% | 6.96% | 13.58% | 13.18% | 5.01% | 8.77% | 14.00% | 13.05% | 7.54% | 11.47% | 2.06% | 3.63% | 5.73% | 9.38% | 14.85% | 15.57% | 12.93% | 12.27% | 20.42% | 8.00% | 5.97% | 8.60% | 6.38% |
| 7.76% | 10.89% | 12.74% | 5.26% | 19.51% | 24.28% | 11.20% | 18.31% | 5.47% | 3.10% | 10.85% | 4.24% | 5.87% | 5.12% | 12.91% | 17.10% | 14.42% | 3.37% | 13.30% | 13.47% | 13.78% | 4.66% | 11.55% | 0.85% | 8.60% | 1.36% | 10.70% | 12.22% | 6.21% | 20.16% | 14.19% | 7.19% | 14.53% | 9.36% | 21.87% | 23.85% | 6.72% | 5.84% | 7.60% | 12.82% | 5.34% | 17.11% | 11.74% | 20.95% | 5.26% | 14.76% | 4.90% | 5.26% | 23.57% | 20.13% | 2.92% | 5.48% | 12.35% | 8.97% | 8.97% | 19.23% | 12.36% | 10.45% | 14.63% | 13.50% | 20.46% | 18.22% | 17.78% | 5.12% | 2.22% | 11.46% | 5.12% | 23.80% | 5.39% | 5.06% | 2.37% | 1.91% | 15.45% | 5.97% | 21.99% | 18.27% | 10.82% | 5.69% | 13.82% | 8.43% | 11.58% | 21.66% | 0.18% | 6.02% | 1.87% | 17.91% | 6.31% | 5.03% | 12.61% | 9.23% | 19.62% | 3.45% | 5.75% | 8.00% | 3.89% | 4.48% | 3.72% | 2.10% | 6.40% | 11.90% | 8.99% | 16.41% | 5.89% | 6.56% | 12.17% | 26.74% | 15.57% | 19.85% | 8.84% | 2.38% | 3.83% | 9.86% | 11.24% | 10.20% | 7.63% | 6.03% | 21.72% | 21.35% |
The percentage areas of the contiguous United States are computed based on the climate division data set. Those climate divisions having the monthly total precipitation in the top ten percent (> 90th percentile) of their historical distribution are very wet and those in the bottom ten percent (< 10th percentile) are very dry.
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http://www.ncdc.noaa.gov/temp-and-precip/uspa/index.php