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 Warm: Very Cold:
1895 3.03% 1.33%
1896 14.14% 2.85%
1897 6.15% 12.03%
1898 18.60% 1.21%
1899 20.92% 23.54%
1900 31.75% 13.85%
1901 23.71% 4.42%
1902 12.67% 11.21%
1903 6.01% 18.94%
1904 3.08% 28.58%
1905 5.22% 2.24%
1906 11.77% 22.68%
1907 1.34% 28.13%
1908 0.00% 19.18%
1909 4.35% 1.88%
1910 6.40% 21.72%
1911 2.71% 25.90%
1912 0.00% 42.80%
1913 18.93% 2.71%
1914 0.00% 4.99%
1915 14.20% 45.32%
1916 2.67% 20.22%
1917 2.74% 27.41%
1918 21.70% 17.58%
1919 1.08% 2.85%
1920 0.59% 33.40%
1921 3.57% 9.80%
1922 0.74% 7.30%
1923 0.00% 26.07%
1924 15.14% 5.18%
1925 1.81% 18.59%
1926 6.12% 0.00%
1927 3.48% 55.05%
1928 5.55% 11.36%
1929 12.14% 9.99%
1930 4.21% 2.54%
1931 7.12% 9.80%
1932 1.62% 4.29%
1933 1.01% 2.72%
1934 29.26% 4.76%
1935 4.66% 0.00%
1936 33.59% 0.00%
1937 50.68% 1.59%
1938 29.64% 0.62%
1939 6.52% 3.05%
1940 3.77% 6.19%
1941 5.24% 12.07%
1942 1.74% 0.46%
1943 28.71% 2.71%
1944 4.05% 0.93%
1945 4.25% 0.73%
1946 0.82% 20.36%
1947 37.75% 4.39%
1948 3.64% 2.98%
1949 3.43% 6.49%
1950 0.28% 42.91%
1951 17.84% 9.70%
1952 16.63% 0.00%
1953 0.00% 3.00%
1954 22.07% 14.64%
1955 31.70% 1.38%
1956 3.27% 11.34%
1957 0.02% 9.78%
1958 21.97% 0.00%
1959 22.02% 1.33%
1960 0.72% 3.77%
1961 19.97% 11.13%
1962 7.50% 0.03%
1963 0.36% 9.45%
1964 0.83% 27.14%
1965 0.35% 10.79%
1966 3.67% 25.63%
1967 14.49% 40.22%
1968 2.27% 34.61%
1969 27.15% 8.24%
1970 12.72% 0.00%
1971 21.54% 19.04%
1972 1.14% 6.69%
1973 7.39% 7.25%
1974 0.00% 33.66%
1975 2.00% 17.71%
1976 1.92% 35.49%
1977 10.46% 18.61%
1978 1.58% 5.24%
1979 0.00% 12.92%
1980 22.99% 13.92%
1981 12.88% 6.65%
1982 6.71% 12.38%
1983 55.79% 0.32%
1984 9.72% 3.87%
1985 0.71% 21.02%
1986 18.15% 15.01%
1987 9.69% 14.20%
1988 17.38% 0.00%
1989 0.08% 4.27%
1990 2.52% 5.48%
1991 14.65% 2.25%
1992 6.12% 58.08%
1993 3.60% 13.65%
1994 19.16% 18.53%
1995 43.27% 1.42%
1996 7.91% 8.57%
1997 8.42% 12.09%
1998 20.98% 0.00%
1999 17.71% 0.22%
2000 32.23% 0.37%
2001 27.47% 0.00%
2002 12.41% 3.68%
2003 35.94% 0.00%