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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March Very Warm: Very Cold:
1895 5.91% 6.45%
1896 4.40% 14.64%
1897 9.89% 30.17%
1898 13.25% 13.32%
1899 3.09% 25.24%
1900 25.98% 9.18%
1901 2.53% 1.20%
1902 7.44% 4.67%
1903 21.91% 0.00%
1904 14.20% 6.15%
1905 37.85% 0.00%
1906 0.44% 47.76%
1907 50.07% 0.71%
1908 30.09% 0.00%
1909 0.10% 0.16%
1910 92.08% 0.00%
1911 24.43% 0.67%
1912 0.00% 46.59%
1913 3.14% 17.77%
1914 9.05% 7.10%
1915 10.29% 49.59%
1916 20.82% 9.66%
1917 0.46% 35.35%
1918 45.90% 0.00%
1919 0.00% 1.08%
1920 0.00% 0.00%
1921 63.68% 0.00%
1922 0.00% 9.75%
1923 0.08% 25.11%
1924 0.00% 34.52%
1925 10.94% 0.00%
1926 12.55% 21.95%
1927 1.86% 0.00%
1928 7.63% 0.15%
1929 12.86% 0.00%
1930 0.00% 0.48%