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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% |
