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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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| January | Very Wet: | Very Dry: |
|---|---|---|
| 1895 | 21.12% | 0.00% |
| 1896 | 5.91% | 6.20% |
| 1897 | 21.62% | 2.69% |
| 1898 | 19.81% | 14.65% |
| 1899 | 4.40% | 2.01% |
| 1900 | 2.40% | 13.91% |
| 1901 | 0.59% | 7.01% |
| 1902 | 0.00% | 13.42% |
| 1903 | 5.92% | 5.50% |
| 1904 | 1.01% | 13.20% |
| 1905 | 10.09% | 1.70% |
| 1906 | 16.22% | 0.00% |
| 1907 | 43.36% | 13.67% |
| 1908 | 0.00% | 0.97% |
| 1909 | 26.55% | 18.06% |
| 1910 | 9.37% | 1.01% |
| 1911 | 22.40% | 11.63% |
| 1912 | 4.34% | 18.35% |
| 1913 | 14.38% | 1.23% |
| 1914 | 21.45% | 16.88% |
| 1915 | 17.27% | 2.73% |
| 1916 | 55.87% | 6.16% |
| 1917 | 6.68% | 6.35% |
| 1918 | 14.46% | 5.32% |
| 1919 | 2.60% | 25.02% |
| 1920 | 9.88% | 9.45% |
| 1921 | 2.43% | 3.37% |
