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| March |
|---|
| 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 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3.03% | 6.91% | 31.21% | 13.64% | 16.64% | 8.38% | 1.83% | 7.21% | 9.08% | 27.77% | 22.16% | 22.62% | 17.60% | 5.91% | 0.59% | 0.00% | 1.38% | 24.24% | 12.35% | 1.03% | 2.17% | 5.73% | 6.13% | 4.32% | 10.06% | 9.25% | 5.39% | 21.22% | 2.27% | 9.55% | 2.16% | 15.75% | 5.81% | 6.26% | 9.73% | 4.51% | 1.91% | 9.93% | 4.19% | 5.65% | 8.09% | 7.41% | 2.98% | 26.01% | 0.40% | 5.98% | 15.75% | 9.44% | 6.94% | 14.45% | 22.36% | 10.11% | 2.62% | 8.20% | 4.49% | 9.73% | 9.82% | 11.56% | 5.53% | 9.82% | 4.78% | 1.84% | 9.01% | 12.62% | 5.28% | 2.36% | 12.39% | 0.17% | 6.80% | 6.47% | 3.38% | 4.22% | 3.15% | 3.77% | 1.62% | 9.13% | 4.94% | 3.85% | 40.61% | 10.54% | 16.20% | 8.87% | 21.48% | 13.30% | 15.60% | 17.72% | 11.44% | 12.17% | 39.64% | 8.10% | 12.88% | 0.09% | 14.23% | 2.58% | 14.26% | 18.28% | 21.58% | 10.46% | 10.80% | 9.09% | 22.47% | 4.24% | 7.84% | 21.59% | 6.48% | 12.26% | 15.13% | 7.59% | 10.82% | 15.13% | 2.84% | 10.37% | 19.34% | 12.15% | 15.43% | 7.52% | 14.49% | 16.37% | 0.74% |
| 21.54% | 9.21% | 0.50% | 9.79% | 10.67% | 11.41% | 2.51% | 2.30% | 0.05% | 12.64% | 3.46% | 3.97% | 15.39% | 5.34% | 4.51% | 46.78% | 25.17% | 7.92% | 1.33% | 9.53% | 28.10% | 13.87% | 9.41% | 18.85% | 2.38% | 2.14% | 3.77% | 2.40% | 10.07% | 9.87% | 23.96% | 24.64% | 5.16% | 5.89% | 2.94% | 18.02% | 2.51% | 8.22% | 12.08% | 12.77% | 6.27% | 17.63% | 17.29% | 1.77% | 7.59% | 6.94% | 21.60% | 7.31% | 1.30% | 3.73% | 7.96% | 4.95% | 10.62% | 2.87% | 4.83% | 12.88% | 4.19% | 1.30% | 2.52% | 12.92% | 30.18% | 43.78% | 7.34% | 13.54% | 26.44% | 11.29% | 4.67% | 6.34% | 11.29% | 0.80% | 17.32% | 30.86% | 19.21% | 13.87% | 22.29% | 1.22% | 29.45% | 22.04% | 2.83% | 2.95% | 0.08% | 4.26% | 2.90% | 18.40% | 5.21% | 2.65% | 15.25% | 7.30% | 1.90% | 3.85% | 10.10% | 9.89% | 3.96% | 15.91% | 2.85% | 4.16% | 0.00% | 6.57% | 1.97% | 25.45% | 5.49% | 9.00% | 28.06% | 0.29% | 14.96% | 1.49% | 15.82% | 6.82% | 5.99% | 28.21% | 4.76% | 14.50% | 16.42% | 15.36% | 7.76% | 8.31% | 14.28% | 10.59% | 18.18% |
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