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| July |
|---|
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 18.08% | 17.16% | 8.15% | 9.66% | 13.17% | 14.45% | 2.91% | 22.35% | 15.61% | 1.86% | 16.63% | 18.66% | 7.04% | 8.52% | 12.23% | 4.52% | 16.25% | 18.79% | 19.26% | 13.17% | 31.49% | 25.46% | 5.09% | 3.27% | 18.57% | 0.00% | 13.59% | 3.15% | 13.89% | 2.81% | 8.94% | 2.70% | 4.99% | 8.27% | 9.91% | 10.18% | 7.75% | 7.36% | 8.87% | 3.07% | 6.93% | 12.33% | 12.50% | 16.07% | 1.37% | 6.15% | 10.72% | 4.05% | 4.90% | 4.06% | 13.82% | 8.36% | 5.22% | 14.96% | 10.60% | 25.38% | 7.51% | 8.73% | 8.74% | 1.10% | 14.11% | 5.83% | 3.84% | 28.44% | 9.59% | 10.64% | 9.08% | 16.61% | 4.65% | 4.49% | 8.57% | 4.14% | 7.66% | 6.87% | 11.88% | 6.20% | 8.97% | 10.26% | 11.28% | 7.95% | 17.10% | 11.52% | 6.70% | 12.91% | 15.64% | 5.35% | 11.10% | 11.42% | 13.92% | 19.78% | 8.92% | 11.05% | 21.26% | 4.78% | 8.29% | 14.90% | 10.03% | 27.98% | 29.65% | 10.98% | 12.36% | 13.91% | 14.50% | 15.23% | 16.73% | 1.93% | 11.62% | 6.51% | 11.18% | 9.46% | 4.89% | 12.04% | 12.39% | 10.97% | 12.22% | 22.51% | 8.64% | 8.29% |
| 9.99% | 10.00% | 6.26% | 10.50% | 13.21% | 15.81% | 15.91% | 19.37% | 10.51% | 0.00% | 9.38% | 9.84% | 6.89% | 2.71% | 5.58% | 14.99% | 12.57% | 6.79% | 7.82% | 12.01% | 1.57% | 11.66% | 16.85% | 9.89% | 13.59% | 1.00% | 9.77% | 7.06% | 4.88% | 16.37% | 7.38% | 4.62% | 4.78% | 4.93% | 13.81% | 39.33% | 13.63% | 8.19% | 14.12% | 27.94% | 12.95% | 25.80% | 5.79% | 0.93% | 11.92% | 23.28% | 3.23% | 11.00% | 11.28% | 21.84% | 7.17% | 8.03% | 30.13% | 9.27% | 4.28% | 1.77% | 6.53% | 14.19% | 14.27% | 21.15% | 6.00% | 4.88% | 15.45% | 10.51% | 15.43% | 15.88% | 1.60% | 12.28% | 18.18% | 10.30% | 6.07% | 7.77% | 12.09% | 7.07% | 3.05% | 11.60% | 4.64% | 14.13% | 8.95% | 15.07% | 10.87% | 6.91% | 7.49% | 8.87% | 8.34% | 24.43% | 4.93% | 2.60% | 30.47% | 8.86% | 5.17% | 8.44% | 9.40% | 11.85% | 7.55% | 3.42% | 6.85% | 3.22% | 29.28% | 9.77% | 11.47% | 3.38% | 6.58% | 8.03% | 11.78% | 25.57% | 7.46% | 11.53% | 25.33% | 2.41% | 12.70% | 13.69% | 5.93% | 9.95% | 8.06% | 3.68% | 12.02% | 12.17% |
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