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| August |
|---|
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3.03% | 14.14% | 6.15% | 18.60% | 20.92% | 31.75% | 23.71% | 12.67% | 6.01% | 3.08% | 5.22% | 11.77% | 1.34% | 0.00% | 4.35% | 6.40% | 2.71% | 0.00% | 18.93% | 0.00% | 14.20% | 2.67% | 2.74% | 21.70% | 1.08% | 0.59% | 3.57% | 0.74% | 0.00% | 15.14% | 1.81% | 6.12% | 3.48% | 5.55% | 12.14% | 4.21% | 7.12% | 1.62% | 1.01% | 29.26% | 4.66% | 33.59% | 50.68% | 29.64% | 6.52% | 3.77% | 5.24% | 1.74% | 28.71% | 4.05% | 4.25% | 0.82% | 37.75% | 3.64% | 3.43% | 0.28% | 17.84% | 16.63% | 0.00% | 22.07% | 31.70% | 3.27% | 0.02% | 21.97% | 22.02% | 0.72% | 19.97% | 7.50% | 0.36% | 0.83% | 0.35% | 3.67% | 14.49% | 2.27% | 27.15% | 12.72% | 21.54% | 1.14% | 7.39% | 0.00% | 2.00% | 1.92% | 10.46% | 1.58% | 0.00% | 22.99% | 12.88% | 6.71% | 55.79% | 9.72% | 0.71% | 18.15% | 9.69% | 17.38% | 0.08% | 2.52% | 14.65% | 6.12% | 3.60% | 19.16% | 43.27% | 7.91% | 8.42% | 20.98% | 17.71% | 32.23% | 27.47% | 12.41% | 35.94% | 5.36% | 18.05% | 18.26% | 42.54% | 11.15% | 9.07% | 37.63% | 43.54% | 28.94% |
| 1.33% | 2.85% | 12.03% | 1.21% | 23.54% | 13.85% | 4.42% | 11.21% | 18.94% | 28.58% | 2.24% | 22.68% | 28.13% | 19.18% | 1.88% | 21.72% | 25.90% | 42.80% | 2.71% | 4.99% | 45.32% | 20.22% | 27.41% | 17.58% | 2.85% | 33.40% | 9.80% | 7.30% | 26.07% | 5.18% | 18.59% | 0.00% | 55.05% | 11.36% | 9.99% | 2.54% | 9.80% | 4.29% | 2.72% | 4.76% | 0.00% | 0.00% | 1.59% | 0.62% | 3.05% | 6.19% | 12.07% | 0.46% | 2.71% | 0.93% | 0.73% | 20.36% | 4.39% | 2.98% | 6.49% | 42.91% | 9.70% | 0.00% | 3.00% | 14.64% | 1.38% | 11.34% | 9.78% | 0.00% | 1.33% | 3.77% | 11.13% | 0.03% | 9.45% | 27.14% | 10.79% | 25.63% | 40.22% | 34.61% | 8.24% | 0.00% | 19.04% | 6.69% | 7.25% | 33.66% | 17.71% | 35.49% | 18.61% | 5.24% | 12.92% | 13.92% | 6.65% | 12.38% | 0.32% | 3.87% | 21.02% | 15.01% | 14.20% | 0.00% | 4.27% | 5.48% | 2.25% | 58.08% | 13.65% | 18.53% | 1.42% | 8.57% | 12.09% | 0.00% | 0.22% | 0.37% | 0.00% | 3.68% | 0.00% | 51.79% | 0.00% | 1.63% | 0.00% | 2.23% | 14.15% | 0.28% | 0.00% | 1.07% |
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