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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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| October | Very Warm: | Very Cold: |
|---|---|---|
| 1895 | 2.44% | 48.51% |
| 1896 | 3.01% | 28.04% |
| 1897 | 14.37% | 6.45% |
| 1898 | 1.51% | 33.18% |
| 1899 | 5.01% | 18.78% |
| 1900 | 36.35% | 6.01% |
| 1901 | 12.27% | 0.00% |
| 1902 | 3.39% | 0.00% |
| 1903 | 2.32% | 0.45% |
| 1904 | 0.50% | 5.35% |
| 1905 | 0.00% | 34.15% |
| 1906 | 1.68% | 18.00% |
| 1907 | 10.67% | 8.93% |
| 1908 | 1.09% | 27.13% |
| 1909 | 0.00% | 8.88% |
| 1910 | 2.62% | 0.27% |
| 1911 | 6.27% | 24.34% |
| 1912 | 0.17% | 28.14% |
| 1913 | 2.08% | 35.93% |
| 1914 | 8.84% | 0.00% |
| 1915 | 0.64% | 0.00% |
| 1916 | 0.00% | 33.05% |
| 1917 | 3.52% | 59.47% |
| 1918 | 9.96% | 0.00% |
| 1919 | 26.81% | 45.26% |
| 1920 | 18.41% | 19.32% |
| 1921 | 2.94% | 0.00% |
| 1922 | 2.43% | 0.00% |
| 1923 | 0.00% | 36.02% |
| 1924 | 16.09% | 4.16% |
| 1925 | 0.00% | 52.29% |
| 1926 | 6.37% | 0.44% |
| 1927 | 3.01% | 0.00% |
| 1928 | 5.79% | 0.00% |
| 1929 | 0.00% | 0.13% |
| 1930 | 0.00% | 12.47% |
| 1931 | 20.36% | 0.00% |
| 1932 | 0.93% | 16.11% |
| 1933 | 18.74% | 2.83% |
| 1934 | 24.34% | 1.02% |
| 1935 | 1.24% | 1.26% |
| 1936 | 3.38% | 11.35% |
| 1937 | 4.38% | 1.46% |
| 1938 | 27.40% | 1.45% |
| 1939 | 1.67% | 1.41% |
| 1940 | 23.70% | 4.22% |
| 1941 | 26.06% | 7.99% |
| 1942 | 0.17% | 0.00% |
| 1943 | 0.11% | 2.46% |
| 1944 | 13.74% | 0.08% |
| 1945 | 1.24% | 0.51% |
| 1946 | 5.70% | 33.56% |
| 1947 | 65.51% | 0.00% |
| 1948 | 0.00% | 2.72% |
| 1949 | 21.84% | 21.87% |
| 1950 | 42.80% | 0.27% |
| 1951 | 0.32% | 4.47% |
| 1952 | 21.48% | 36.08% |
| 1953 | 18.78% | 0.08% |
| 1954 | 4.43% | 0.46% |
| 1955 | 1.09% | 0.00% |
| 1956 | 28.64% | 2.41% |
| 1957 | 0.00% | 24.70% |
| 1958 | 3.81% | 1.92% |
| 1959 | 2.52% | 18.92% |
| 1960 | 0.00% | 0.00% |
| 1961 | 0.48% | 0.62% |
| 1962 | 4.89% | 0.00% |
| 1963 | 65.83% | 0.00% |
| 1964 | 9.65% | 14.23% |
| 1965 | 11.77% | 1.60% |
| 1966 | 0.00% | 6.90% |
| 1967 | 0.81% | 1.05% |
| 1968 | 1.18% | 0.59% |
| 1969 | 0.26% | 49.76% |
| 1970 | 0.25% | 34.98% |
| 1971 | 30.20% | 21.77% |
| 1972 | 0.00% | 19.34% |
| 1973 | 10.45% | 0.00% |
| 1974 | 0.00% | 9.57% |
| 1975 | 0.00% | 1.06% |
| 1976 | 0.00% | 70.42% |
| 1977 | 0.00% | 5.13% |
| 1978 | 7.72% | 0.00% |
| 1979 | 6.23% | 0.00% |
| 1980 | 0.00% | 16.79% |
| 1981 | 0.00% | 15.28% |
| 1982 | 0.00% | 9.65% |
| 1983 | 3.16% | 1.10% |
| 1984 | 17.77% | 38.28% |
| 1985 | 7.52% | 1.89% |
| 1986 | 0.29% | 1.57% |
| 1987 | 10.73% | 39.61% |
| 1988 | 27.43% | 39.34% |
| 1989 | 0.00% | 0.12% |
| 1990 | 2.94% | 0.17% |
| 1991 | 7.04% | 4.65% |
| 1992 | 4.11% | 6.33% |
| 1993 | 1.99% | 11.66% |
| 1994 | 0.00% | 0.72% |
| 1995 | 4.33% | 0.89% |
