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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February Very Wet: Very Dry:
1895 2.06% 17.48%
1896 8.33% 15.86%
1897 16.86% 8.88%
1898 4.11% 25.98%
1899 13.65% 13.34%
1900 15.52% 9.67%
1901 2.65% 11.03%
1902 13.88% 10.38%
1903 40.41% 6.88%
1904 17.53% 15.56%
1905 9.39% 5.52%
1906 0.00% 11.59%
1907 4.11% 8.72%
1908 20.53% 0.88%
1909 21.15% 8.47%
1910 11.64% 8.81%
1911 14.95% 5.81%
1912 5.86% 10.80%
1913 3.15% 10.90%
1914 0.00% 1.01%
1915 23.09% 1.52%
1916 3.40% 20.22%
1917 4.50% 11.61%
1918 0.00% 11.55%
1919 16.02% 0.00%
1920 2.65% 18.17%
1921 0.00% 10.26%
1922 10.25% 2.11%
1923 6.70% 15.59%
1924 0.00% 10.15%
1925 0.00% 15.40%
1926 3.95% 17.89%
1927 9.08% 0.92%
1928 3.74% 12.38%
1929 5.04% 8.15%
1930 3.94% 8.54%
1931 10.64% 9.09%
1932 11.65% 5.39%
1933 0.51% 8.06%
1934 4.24% 19.22%
1935 1.34% 7.96%
1936 25.46% 11.71%
1937 6.10% 7.84%
1938 16.65% 7.72%
1939 25.20% 3.44%
1940 17.38% 0.00%
1941 9.53% 18.35%
1942 4.64% 3.77%
1943 0.94% 21.71%
1944 13.87% 1.63%
1945 11.32% 3.60%
1946 2.75% 12.95%
1947 0.59% 36.62%
1948 17.77% 2.51%
1949 7.88% 5.63%
1950 9.01% 8.77%
1951 16.77% 4.32%
1952 5.73% 2.69%
1953 10.65% 6.71%
1954 3.22% 24.31%
1955 11.17% 5.69%
1956 12.35% 3.56%
1957 3.14% 5.79%
1958 14.43% 7.20%
1959 5.64% 0.72%
1960 12.21% 2.14%
1961 15.01% 9.02%
1962 24.18% 6.01%
1963 2.67% 12.38%
1964 5.43% 28.28%
1965 5.93% 8.76%
1966 7.19% 2.63%
1967 0.00% 25.91%
1968 1.13% 27.15%
1969 15.05% 12.82%
1970 3.88% 22.50%
1971 18.49% 5.42%
1972 6.39% 27.07%
1973 4.15% 11.94%
1974 0.25% 17.28%
1975 5.90% 0.87%
1976 3.96% 15.04%
1977 1.86% 26.40%
1978 13.78% 20.62%
1979 12.76% 4.23%
1980 14.58% 11.87%
1981 9.82% 8.79%
1982 6.02% 6.55%
1983 9.59% 9.27%
1984 5.97% 10.14%
1985 7.98% 6.20%
1986 23.07% 3.79%
1987 23.40% 14.82%
1988 1.43% 18.36%
1989 9.08% 7.70%
1990 18.74% 4.01%
1991 2.62% 25.16%
1992 12.99% 5.78%
1993 17.08% 6.65%
1994 4.68% 5.60%
1995 0.13% 9.14%
1996 3.40% 22.65%
1997 18.87% 6.71%
1998 29.93% 4.14%
1999 7.16% 21.95%
2000 14.98% 11.29%
2001 17.28% 9.13%
2002 1.55% 26.65%
2003 18.23% 1.73%
2004 13.97% 5.77%
2005 15.62% 13.52%
2006 0.35% 22.78%
2007 6.49% 9.20%
2008 16.73% 3.59%
2009 5.81% 20.04%
2010 4.87% 4.20%
2011 11.42% 6.94%
2012 6.61% 8.42%