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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 Warm: | Very Cold: |
|---|---|---|
| 1895 | 4.80% | 3.98% |
| 1896 | 56.10% | 18.21% |
| 1897 | 31.61% | 5.53% |
| 1898 | 4.58% | 5.76% |
| 1899 | 21.14% | 18.42% |
| 1900 | 19.56% | 1.42% |
| 1901 | 17.06% | 0.12% |
| 1902 | 27.78% | 0.00% |
| 1903 | 0.04% | 14.05% |
| 1904 | 5.16% | 1.30% |
| 1905 | 11.10% | 17.23% |
| 1906 | 1.03% | 2.32% |
| 1907 | 0.75% | 70.79% |
| 1908 | 0.02% | 22.82% |
