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| October |
|---|
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.00% | 7.35% | 10.52% | 9.87% | 3.83% | 6.79% | 0.00% | 1.51% | 1.89% | 6.31% | 1.45% | 5.03% | 6.36% | 15.86% | 0.00% | 3.72% | 14.59% | 7.61% | 5.34% | 6.68% | 3.71% | 16.94% | 5.98% | 9.30% | 27.66% | 8.58% | 1.54% | 2.42% | 16.66% | 11.92% | 17.60% | 3.04% | 2.92% | 3.67% | 9.66% | 13.78% | 1.11% | 14.72% | 3.39% | 5.50% | 0.12% | 5.89% | 11.60% | 5.24% | 0.36% | 3.27% | 44.50% | 8.38% | 4.39% | 1.37% | 8.08% | 24.10% | 11.75% | 0.08% | 14.96% | 9.24% | 10.40% | 0.84% | 2.46% | 10.45% | 7.22% | 6.01% | 19.17% | 1.89% | 30.00% | 10.27% | 1.56% | 6.98% | 1.84% | 6.33% | 1.11% | 0.90% | 7.68% | 5.27% | 18.50% | 13.63% | 21.68% | 19.24% | 5.46% | 13.55% | 15.23% | 11.26% | 8.42% | 1.52% | 6.49% | 4.91% | 17.15% | 15.54% | 12.42% | 33.99% | 15.78% | 16.04% | 4.60% | 1.70% | 1.63% | 15.20% | 7.11% | 2.92% | 5.35% | 20.55% | 20.46% | 7.16% | 9.39% | 30.32% | 1.43% | 22.37% | 8.03% | 22.85% | 4.85% | 20.87% | 17.36% | 23.27% | 17.06% | 11.36% | 43.87% | 12.96% | 6.60% | 9.71% |
| 27.66% | 5.30% | 14.90% | 11.99% | 2.11% | 0.63% | 5.99% | 9.22% | 6.19% | 18.87% | 12.33% | 10.52% | 9.03% | 17.66% | 5.91% | 6.91% | 2.39% | 0.70% | 2.70% | 1.50% | 13.39% | 1.33% | 36.00% | 2.17% | 0.24% | 5.32% | 15.21% | 2.08% | 3.17% | 30.52% | 0.82% | 3.14% | 2.59% | 1.78% | 4.80% | 5.11% | 5.84% | 6.84% | 14.01% | 24.05% | 14.96% | 9.64% | 5.06% | 29.57% | 8.70% | 7.33% | 0.71% | 1.98% | 5.37% | 18.58% | 7.64% | 1.39% | 5.23% | 6.93% | 1.65% | 18.40% | 1.36% | 77.51% | 20.25% | 5.74% | 11.45% | 7.81% | 0.48% | 19.51% | 5.07% | 2.34% | 5.59% | 0.96% | 32.53% | 38.05% | 22.31% | 10.08% | 9.70% | 1.86% | 1.30% | 2.40% | 1.07% | 1.80% | 6.88% | 11.20% | 13.82% | 6.21% | 5.40% | 28.08% | 3.65% | 3.35% | 0.45% | 6.73% | 0.00% | 1.89% | 0.33% | 2.53% | 26.60% | 30.87% | 4.69% | 1.79% | 5.07% | 6.91% | 1.79% | 6.51% | 20.29% | 1.77% | 2.75% | 0.41% | 22.27% | 11.60% | 12.27% | 9.62% | 12.39% | 0.36% | 12.33% | 1.94% | 5.04% | 2.03% | 2.89% | 10.30% | 2.58% | 4.53% |
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