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| October |
|---|
| Very Warm: |
| Very Cold: |
| 1895 | 1896 | 1897 | 1898 | 1899 | 1900 | 1901 | 1902 | 1903 | 1904 | 1905 | 1906 | 1907 | 1908 | 1909 | 1910 | 1911 | 1912 | 1913 | 1914 | 1915 | 1916 | 1917 | 1918 | 1919 | 1920 | 1921 | 1922 | 1923 | 1924 | 1925 | 1926 | 1927 | 1928 | 1929 | 1930 | 1931 | 1932 | 1933 | 1934 | 1935 | 1936 | 1937 | 1938 | 1939 | 1940 | 1941 | 1942 | 1943 | 1944 | 1945 | 1946 | 1947 | 1948 | 1949 | 1950 | 1951 | 1952 | 1953 | 1954 | 1955 | 1956 | 1957 | 1958 | 1959 | 1960 | 1961 | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.44% | 3.01% | 14.37% | 1.51% | 5.01% | 36.35% | 12.27% | 3.39% | 2.32% | 0.50% | 0.00% | 1.68% | 10.67% | 1.09% | 0.00% | 2.62% | 6.27% | 0.17% | 2.08% | 8.84% | 0.64% | 0.00% | 3.52% | 9.96% | 26.81% | 18.41% | 2.94% | 2.43% | 0.00% | 16.09% | 0.00% | 6.37% | 3.01% | 5.79% | 0.00% | 0.00% | 20.36% | 0.93% | 18.74% | 24.34% | 1.24% | 3.38% | 4.38% | 27.40% | 1.67% | 23.70% | 26.06% | 0.17% | 0.11% | 13.74% | 1.24% | 5.70% | 65.51% | 0.00% | 21.84% | 42.80% | 0.32% | 21.48% | 18.78% | 4.43% | 1.09% | 28.64% | 0.00% | 3.81% | 2.52% | 0.00% | 0.48% | 4.89% | 65.83% | 9.65% | 11.77% | 0.00% | 0.81% | 1.18% | 0.26% | 0.25% | 30.20% | 0.00% | 10.45% | 0.00% | 0.00% | 0.00% | 0.00% | 7.72% | 6.23% | 0.00% | 0.00% | 0.00% | 3.16% | 17.77% | 7.52% | 0.29% | 10.73% | 27.43% | 0.00% | 2.94% | 7.04% | 4.11% | 1.99% | 0.00% | 4.33% | 0.00% | 0.00% | 2.35% | 5.43% | 0.00% | 10.35% | 5.14% | 30.53% | 8.51% | 0.12% | 0.00% | 23.56% | 0.95% | 1.10% | 10.78% | 0.92% | 1.24% |
| 48.51% | 28.04% | 6.45% | 33.18% | 18.78% | 6.01% | 0.00% | 0.00% | 0.45% | 5.35% | 34.15% | 18.00% | 8.93% | 27.13% | 8.88% | 0.27% | 24.34% | 28.14% | 35.93% | 0.00% | 0.00% | 33.05% | 59.47% | 0.00% | 45.26% | 19.32% | 0.00% | 0.00% | 36.02% | 4.16% | 52.29% | 0.44% | 0.00% | 0.00% | 0.13% | 12.47% | 0.00% | 16.11% | 2.83% | 1.02% | 1.26% | 11.35% | 1.46% | 1.45% | 1.41% | 4.22% | 7.99% | 0.00% | 2.46% | 0.08% | 0.51% | 33.56% | 0.00% | 2.72% | 21.87% | 0.27% | 4.47% | 36.08% | 0.08% | 0.46% | 0.00% | 2.41% | 24.70% | 1.92% | 18.92% | 0.00% | 0.62% | 0.00% | 0.00% | 14.23% | 1.60% | 6.90% | 1.05% | 0.59% | 49.76% | 34.98% | 21.77% | 19.34% | 0.00% | 9.57% | 1.06% | 70.42% | 5.13% | 0.00% | 0.00% | 16.79% | 15.28% | 9.65% | 1.10% | 38.28% | 1.89% | 1.57% | 39.61% | 39.34% | 0.12% | 0.17% | 4.65% | 6.33% | 11.66% | 0.72% | 0.89% | 0.00% | 0.27% | 1.34% | 1.09% | 0.00% | 4.12% | 41.13% | 0.41% | 0.22% | 0.00% | 13.56% | 0.10% | 0.57% | 54.91% | 0.00% | 1.67% | 3.11% |
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 in the top ten percent (> 90th percentile) of their historical distribution are very warm and those in the bottom ten percent (< 10th percentile) are very cold.
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http://www.ncdc.noaa.gov/temp-and-precip/uspa/index.php