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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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| June | Very Warm: | Very Cold: |
|---|---|---|
| 1895 | 8.67% | 6.35% |
| 1896 | 26.18% | 0.14% |
| 1897 | 6.45% | 6.44% |
| 1898 | 10.23% | 0.00% |
| 1899 | 8.15% | 3.73% |
| 1900 | 29.42% | 0.02% |
| 1901 | 5.49% | 15.44% |
| 1902 | 18.16% | 21.01% |
| 1903 | 7.91% | 55.11% |
| 1904 | 4.49% | 10.50% |
| 1905 | 0.00% | 4.17% |
| 1906 | 1.50% | 13.84% |
| 1907 | 0.00% | 38.87% |
| 1908 | 1.62% | 16.04% |
| 1909 | 0.46% | 0.00% |
| 1910 | 2.87% | 17.44% |
| 1911 | 38.74% | 2.63% |
| 1912 | 0.17% | 42.62% |
| 1913 | 1.38% | 12.37% |
| 1914 | 23.67% | 3.08% |
| 1915 | 3.07% | 42.79% |
| 1916 | 4.31% | 41.93% |
| 1917 | 0.00% | 25.60% |
| 1918 | 45.62% | 5.06% |
| 1919 | 16.88% | 18.01% |
| 1920 | 0.00% | 6.72% |
| 1921 | 25.97% | 3.18% |
| 1922 | 10.18% | 0.00% |
| 1923 | 5.64% | 17.04% |
| 1924 | 9.39% | 13.12% |
| 1925 | 30.21% | 2.22% |
| 1926 | 11.93% | 19.98% |
| 1927 | 1.54% | 18.85% |
| 1928 | 0.00% | 43.69% |
| 1929 | 0.00% | 1.48% |
| 1930 | 3.66% | 1.81% |
| 1931 | 26.82% | 1.68% |
| 1932 | 2.78% | 4.66% |
| 1933 | 43.76% | 2.23% |
| 1934 | 38.41% | 4.35% |
| 1935 | 1.88% | 19.18% |
| 1936 | 24.50% | 1.39% |
| 1937 | 2.99% | 0.00% |
| 1938 | 1.88% | 0.89% |
| 1939 | 7.40% | 4.36% |
| 1940 | 19.56% | 7.62% |
| 1941 | 0.54% | 13.66% |
| 1942 | 1.49% | 5.99% |
| 1943 | 24.43% | 18.07% |
| 1944 | 17.93% | 17.47% |
| 1945 | 1.21% | 44.12% |
| 1946 | 2.29% | 2.42% |
| 1947 | 0.10% | 24.84% |
| 1948 | 4.57% | 2.06% |
| 1949 | 9.87% | 0.00% |
