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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August Very Wet: Very Dry:
1895 5.14% 7.76%
1896 0.81% 10.89%
1897 2.44% 12.74%
1898 10.11% 5.26%
1899 5.60% 19.51%
1900 10.57% 24.28%
1901 17.73% 11.20%
1902 6.57% 18.31%
1903 10.97% 5.47%
1904 7.29% 3.10%
1905 2.65% 10.85%
1906 19.76% 4.24%
1907 2.68% 5.87%
1908 9.61% 5.12%
1909 9.57% 12.91%
1910 3.14% 17.10%
1911 9.27% 14.42%
1912 13.97% 3.37%
1913 0.00% 13.30%
1914 16.48% 13.47%
1915 27.19% 13.78%
1916 3.92% 4.66%
1917 5.29% 11.55%
1918 4.73% 0.85%
1919 1.29% 8.60%
1920 15.47% 1.36%
1921 9.49% 10.70%
1922 7.97% 12.22%
1923 8.34% 6.21%
1924 4.44% 20.16%
1925 1.70% 14.19%
1926 16.05% 7.19%
1927 17.49% 14.53%
1928 12.48% 9.36%
1929 3.77% 21.87%
1930 14.81% 23.85%
1931 9.92% 6.72%
1932 8.31% 5.84%
1933 15.82% 7.60%
1934 3.77% 12.82%
1935 5.60% 5.34%
1936 4.88% 17.11%
1937 6.42% 11.74%
1938 1.99% 20.95%
1939 6.62% 5.26%
1940 12.51% 14.76%
1941 15.39% 4.90%
1942 16.98% 5.26%
1943 3.57% 23.57%
1944 16.23% 20.13%
1945 11.73% 2.92%
1946 6.89% 5.48%
1947 7.99% 12.35%
1948 2.65% 8.97%
1949 6.89% 8.97%
1950 9.14% 19.23%
1951 14.89% 12.36%
1952 5.52% 10.45%
1953 4.68% 14.63%
1954 12.69% 13.50%
1955 13.21% 20.46%
1956 4.56% 18.22%
1957 7.36% 17.78%
1958 2.03% 5.12%
1959 7.63% 2.22%
1960 8.81% 11.46%
1961 9.73% 5.12%
1962 2.47% 23.80%
1963 9.18% 5.39%
1964 9.27% 5.06%
1965 16.57% 2.37%
1966 17.13% 1.91%
1967 7.70% 15.45%
1968 25.50% 5.97%
1969 3.89% 21.99%
1970 4.55% 18.27%
1971 13.42% 10.82%
1972 12.07% 5.69%
1973 0.22% 13.82%
1974 22.75% 8.43%
1975 17.09% 11.58%
1976 14.37% 21.66%
1977 24.80% 0.18%
1978 7.79% 6.02%
1979 15.19% 1.87%
1980 17.24% 17.91%
1981 11.48% 6.31%
1982 5.87% 5.03%
1983 19.47% 12.61%
1984 14.26% 9.23%
1985 13.46% 19.62%
1986 6.06% 3.45%
1987 9.40% 5.75%
1988 8.99% 8.00%
1989 8.94% 3.89%
1990 8.96% 4.48%
1991 6.96% 3.72%
1992 13.58% 2.10%
1993 13.18% 6.40%
1994 5.01% 11.90%
1995 8.77% 8.99%
1996 14.00% 16.41%
1997 13.05% 5.89%