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 Warm: Very Cold:
1895 0.00% 6.64%
1896 0.00% 22.75%
1897 9.36% 37.08%
1899 0.00% 29.68%
1901 0.00% 0.00%
1903 22.01% 1.18%
1905 31.05% 0.00%
1907 50.87% 1.12%
1909 0.00% 1.32%
1911 24.07% 1.69%
1913 2.39% 16.73%
1915 6.35% 49.27%
1917 0.00% 34.56%
1919 0.00% 5.53%
1921 63.97% 0.00%
1923 0.00% 18.46%
1925 12.18% 0.00%
1927 0.54% 0.00%
1929 9.21% 0.00%
1931 1.06% 19.74%
1933 0.00% 0.00%
1935 37.87% 7.63%
1937 0.00% 7.77%
1939 0.00% 2.07%
1941 8.07% 27.88%
1943 0.00% 16.75%
1945 51.47% 7.00%
1947 5.33% 32.10%
1949 0.00% 0.00%
1951 0.00% 22.98%
1953 11.54% 0.00%
1955 1.38% 16.14%
1957 0.00% 0.00%
1959 2.14% 0.00%
1961 5.52% 0.00%
1963 6.50% 0.00%
1965 0.00% 54.61%
1967 26.18% 1.71%
1969 0.00% 55.62%
1971 0.00% 8.06%
1973 35.69% 8.18%
1975 0.00% 2.67%
1977 19.03% 5.14%
1979 2.61% 0.00%
1981 18.02% 0.00%
1983 3.54% 0.00%
1985 8.56% 2.26%
1987 5.21% 2.36%
1989 19.82% 0.00%
1991 0.97% 5.63%
1993 9.71% 0.00%
1995 0.66% 0.00%
1997 32.31% 0.00%
1999 18.14% 0.00%
2001 13.45% 0.71%
2003 6.94% 0.00%
2005 7.33% 0.00%
2007 80.61% 0.00%
2009 7.03% 0.64%
2011 15.77% 0.00%
2013 16.35% 10.29%