U.S. Percentage Areas (Very Warm/Cold, Very Wet/Dry)

The percentage areas of the contiguous United States are computed based on the climate division data set. Those climate divisions having the monthly average temperature/total precipitation in the top ten percent (> 90th percentile) of their historical distribution are very warm/wet and those in the bottom ten percent (< 10th percentile) are very cold/dry.

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March Very Wet: Very Dry:
1895 3.03% 21.54%
1896 6.91% 9.21%
1897 31.21% 0.50%
1898 13.64% 9.79%
1899 16.64% 10.67%
1900 8.38% 11.41%
1901 1.83% 2.51%
1902 7.21% 2.30%
1903 9.08% 0.05%
1904 27.77% 12.64%
1905 22.16% 3.46%
1906 22.62% 3.97%
1907 17.60% 15.39%
1908 5.91% 5.34%
1909 0.59% 4.51%
1910 0.00% 46.78%
1911 1.38% 25.17%
1912 24.24% 7.92%
1913 12.35% 1.33%
1914 1.03% 9.53%
1915 2.17% 28.10%
1916 5.73% 13.87%
1917 6.13% 9.41%
1918 4.32% 18.85%
1919 10.06% 2.38%
1920 9.25% 2.14%
1921 5.39% 3.77%
1922 21.22% 2.40%
1923 2.27% 10.07%
1924 9.55% 9.87%
1925 2.16% 23.96%
1926 15.75% 24.64%
1927 5.81% 5.16%
1928 6.26% 5.89%
1929 9.73% 2.94%
1930 4.51% 18.02%
1931 1.91% 2.51%
1932 9.93% 8.22%
1933 4.19% 12.08%
1934 5.65% 12.77%
1935 8.09% 6.27%
1936 7.41% 17.63%
1937 2.98% 17.29%
1938 26.01% 1.77%
1939 0.40% 7.59%
1940 5.98% 6.94%
1941 15.75% 21.60%
1942 9.44% 7.31%
1943 6.94% 1.30%
1944 14.45% 3.73%
1945 22.36% 7.96%
1946 10.11% 4.95%
1947 2.62% 10.62%
1948 8.20% 2.87%
1949 4.49% 4.83%
1950 9.73% 12.88%
1951 9.82% 4.19%
1952 11.56% 1.30%
1953 5.53% 2.52%
1954 9.82% 12.92%
1955 4.78% 30.18%
1956 1.84% 43.78%
1957 9.01% 7.34%
1958 12.62% 13.54%
1959 5.28% 26.44%
1960 2.36% 11.29%
1961 12.39% 4.67%
1962 0.17% 6.34%
1963 6.80% 11.29%
1964 6.47% 0.80%
1965 3.38% 17.32%
1966 4.22% 30.86%
1967 3.15% 19.21%
1968 3.77% 13.87%
1969 1.62% 22.29%
1970 9.13% 1.22%
1971 4.94% 29.45%
1972 3.85% 22.04%
1973 40.61% 2.83%
1974 10.54% 2.95%
1975 16.20% 0.08%
1976 8.87% 4.26%
1977 21.48% 2.90%
1978 13.30% 18.40%
1979 15.60% 5.21%
1980 17.72% 2.65%
1981 11.44% 15.25%
1982 12.17% 7.30%
1983 39.64% 1.90%
1984 8.10% 3.85%
1985 12.88% 10.10%
1986 0.09% 9.89%
1987 14.23% 3.96%
1988 2.58% 15.91%
1989 14.26% 2.85%
1990 18.28% 4.16%
1991 21.58% 0.00%
1992 10.46% 6.57%
1993 10.80% 1.97%
1994 9.09% 25.45%
1995 22.47% 5.49%
1996 4.24% 9.00%
1997 7.84% 28.06%
1998 21.59% 0.29%
1999 6.48% 14.96%
2000 12.26% 1.49%
2001 15.13% 15.82%
2002 7.59% 6.82%
2003 10.82% 5.99%
2004 15.13% 28.21%
2005 2.84% 4.76%
2006 10.37% 14.50%
2007 19.34% 16.42%
2008 12.15% 15.36%
2009 15.43% 7.76%
2010 7.52% 8.31%
2011 14.49% 14.28%
2012 16.37% 10.59%