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 Warm: Very Cold:
1895 0.00% 7.42%
1896 8.45% 0.00%
1897 0.27% 1.43%
1898 3.27% 9.80%
1899 0.00% 0.00%
1900 22.91% 0.00%
1901 7.20% 0.00%
1902 0.00% 0.00%
1903 0.00% 0.00%
1904 0.00% 10.50%
1905 1.92% 15.53%
1906 9.34% 0.00%
1907 27.23% 9.35%
1908 0.77% 0.00%
1909 13.45% 0.96%
1910 0.59% 3.55%
1911 23.37% 0.00%
1912 0.35% 38.71%
1913 18.35% 8.38%
1914 26.51% 0.00%
1915 0.00% 1.25%
1916 17.09% 26.44%
1917 1.01% 17.91%
1918 0.59% 54.50%
1919 14.53% 8.91%
1920 3.67% 9.11%
1921 24.66% 0.00%