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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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| May | Very Wet: | Very Dry: |
|---|---|---|
| 1895 | 7.84% | 5.40% |
| 1896 | 23.37% | 18.12% |
| 1897 | 6.27% | 22.11% |
| 1898 | 27.24% | 8.70% |
| 1899 | 1.95% | 17.32% |
| 1900 | 6.09% | 12.50% |
| 1901 | 7.06% | 12.37% |
| 1902 | 12.22% | 3.43% |
| 1903 | 9.93% | 15.21% |
| 1904 | 0.95% | 4.90% |
| 1905 | 14.59% | 3.21% |
| 1906 | 24.45% | 7.17% |
| 1907 | 11.77% | 0.77% |
| 1908 | 28.58% | 0.32% |
| 1909 | 5.89% | 9.03% |
| 1910 | 0.00% | 13.12% |
| 1911 | 5.74% | 30.67% |
| 1912 | 13.84% | 6.44% |
| 1913 | 3.32% | 9.44% |
| 1914 | 10.31% | 15.31% |
| 1915 | 28.30% | 1.77% |
| 1916 | 1.35% | 3.22% |
| 1917 | 18.37% | 5.69% |
| 1918 | 5.27% | 7.85% |
| 1919 | 3.00% | 2.14% |
| 1920 | 0.56% | 6.88% |
| 1921 | 9.65% | 11.71% |
| 1922 | 4.44% | 0.15% |
| 1923 | 10.75% | 7.73% |
| 1924 | 3.10% | 27.90% |
| 1925 | 4.17% | 19.31% |
