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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July Very Warm: Very Cold:
1895 0.00% 33.37%
1896 14.41% 1.45%
1897 8.24% 19.42%
1898 5.83% 0.00%
1899 7.93% 3.13%
1900 7.61% 3.08%
1901 57.47% 5.68%
1902 4.52% 29.82%
1903 2.55% 27.89%
1904 0.00% 45.53%
1905 4.77% 38.25%
1906 13.53% 35.29%
1907 0.79% 20.60%
1908 11.39% 19.74%
1909 3.01% 19.44%
1910 6.29% 0.99%
1911 1.73% 34.47%
1912 1.65% 31.38%
1913 3.98% 27.50%
1914 2.44% 14.34%
1915 0.00% 51.06%
1916 19.29% 22.53%
1917 8.14% 0.00%
1918 3.01% 31.46%
1919 5.89% 11.55%
1920 0.86% 17.90%
1921 20.29% 7.92%
1922 1.28% 18.89%
1923 0.00% 10.04%
1924 0.00% 40.64%
1925 12.52% 6.21%
1926 5.79% 18.16%
1927 0.00% 14.45%
1928 0.73% 4.85%
1929 0.00% 2.53%
1930 17.23% 4.45%
1931 35.33% 0.73%
1932 11.61% 10.72%
1933 18.80% 1.20%
1934 46.60% 0.10%
1935 25.89% 4.86%
1936 46.67% 2.03%
1937 3.22% 0.00%
1938 3.62% 10.45%
1939 4.79% 0.52%
1940 5.01% 2.36%
1941 4.84% 11.28%
1942 8.10% 2.84%
1943 2.57% 0.22%
1944 0.90% 14.65%
1945 1.67% 11.42%
1946 0.10% 2.07%
1947 4.58% 23.99%
1948 2.08% 8.77%
1949 13.51% 0.23%
1950 0.22% 59.71%
1951 10.72% 4.28%
1952 17.26% 4.61%
1953 6.78% 0.17%
1954 40.19% 3.77%
1955 26.91% 17.30%
1956 2.88% 15.71%
1957 6.98% 2.52%
1958 6.43% 25.38%
1959 11.32% 8.14%
1960 13.29% 8.45%
1961 3.80% 12.64%
1962 2.81% 39.07%
1963 7.50% 18.30%
1964 9.11% 4.21%
1965 0.00% 19.32%
1966 19.19% 3.56%
1967 0.54% 34.68%
1968 2.18% 12.88%
1969 10.71% 1.43%
1970 1.14% 1.98%
1971 2.30% 29.01%
1972 0.58% 32.90%
1973 0.48% 4.82%
1974 6.13% 3.71%
1975 7.29% 16.11%
1976 0.94% 21.86%
1977 3.48% 0.00%
1978 6.84% 2.53%
1979 1.69% 7.08%
1980 37.52% 0.00%
1981 8.67% 0.88%
1982 0.51% 6.16%
1983 9.94% 14.58%
1984 3.72% 14.68%
1985 15.78% 0.70%
1986 14.86% 23.34%
1987 6.28% 16.79%
1988 21.85% 0.73%
1989 13.71% 6.47%
1990 5.74% 9.88%
1991 2.80% 4.49%
1992 3.27% 44.11%
1993 15.80% 33.62%
1994 16.32% 16.63%
1995 5.43% 10.64%
1996 19.63% 18.26%
1997 1.16% 7.33%
1998 35.88% 0.00%
1999 15.38% 2.80%
2000 12.92% 14.39%
2001 17.31% 7.14%
2002 39.03% 2.72%