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 U.S. Climate Divisional Dataset. 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 Wet: Very Dry:
1895 1.56% 27.38%
1896 9.01% 6.27%
1897 25.04% 0.00%
1899 19.13% 5.68%
1901 2.76% 3.69%
1903 10.21% 3.83%
1905 21.43% 3.31%
1907 15.81% 15.95%
1909 3.90% 8.73%
1911 3.29% 32.65%
1913 14.41% 1.03%
1915 3.76% 30.19%
1917 6.48% 8.78%
1919 10.36% 3.12%
1921 9.31% 5.79%
1923 5.99% 11.59%
1925 2.56% 31.23%
1927 6.02% 5.21%
1929 16.73% 3.85%
1931 2.18% 4.21%
1933 4.40% 13.68%
1935 8.41% 3.72%
1937 3.65% 18.52%
1939 0.48% 8.07%
1941 16.07% 22.85%
1943 4.14% 0.00%
1945 22.64% 7.72%
1947 2.56% 9.78%
1949 4.67% 5.76%
1951 9.40% 3.94%
1953 5.29% 3.25%
1955 4.53% 32.95%
1957 11.14% 7.41%
1959 5.34% 25.57%
1961 14.15% 4.76%
1963 7.06% 11.73%
1965 2.96% 17.36%
1967 4.61% 20.04%
1969 1.62% 26.31%
1971 4.40% 30.96%
1973 39.59% 3.35%
1975 19.39% 0.08%
1977 22.13% 3.07%
1979 16.88% 5.58%
1981 11.22% 17.01%
1983 39.34% 1.54%
1985 12.81% 9.30%
1987 12.78% 4.04%
1989 14.19% 1.95%
1991 20.92% 0.29%
1993 9.75% 1.97%
1995 23.51% 5.52%
1997 9.08% 27.55%
1999 7.49% 15.53%
2001 11.83% 15.35%
2003 13.23% 5.89%
2005 2.30% 5.80%
2007 17.95% 16.32%
2009 12.76% 6.76%
2011 18.08% 13.45%
2013 1.28% 20.45%