U.S. Percentage Areas (Very Warm/Cold, Very Wet/Dry)

NCDC transitioned to the nClimDiv dataset on Thursday, March 13, 2014. This was coincident with the release of the February 2014 monthly monitoring report. For details on this transition, please visit our public FTP site and our U.S. Climate Divisional Database site.

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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February Very Wet: Very Dry:
1895 10.12% 23.47%
1896 8.08% 14.04%
1897 29.46% 9.37%
1898 4.07% 22.77%
1899 15.59% 9.67%
1900 17.98% 7.32%
1901 15.67% 9.87%
1902 18.95% 8.88%
1903 33.31% 7.46%
1904 20.62% 12.64%
1905 19.83% 7.53%
1906 3.15% 14.09%
1907 3.78% 12.75%
1908 25.99% 2.61%
1909 21.53% 7.18%
1910 7.82% 13.66%
1911 22.09% 8.75%
1912 9.03% 12.54%
1913 8.17% 12.33%
1914 3.14% 1.40%
1915 28.06% 1.92%
1916 4.32% 19.65%
1917 4.59% 13.94%
1918 2.67% 17.60%
1919 23.93% 0.16%
1920 8.04% 21.23%
1921 0.29% 10.65%
1922 15.08% 2.07%
1923 9.90% 13.86%
1924 3.17% 11.62%
1925 0.71% 18.22%
1926 3.88% 19.14%
1927 18.21% 0.36%
1928 7.47% 12.51%
1929 4.94% 8.31%
1930 4.80% 15.19%
1931 12.78% 9.75%
1932 10.24% 5.16%
1933 0.61% 10.27%
1934 3.78% 19.30%
1935 1.07% 8.92%
1936 25.03% 10.90%
1937 5.30% 7.60%
1938 15.33% 9.04%
1939 25.15% 3.02%
1940 15.76% 0.00%