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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February Very Warm: Very Cold:
1895 0.00% 63.49%
1896 0.58% 0.00%
1897 0.00% 1.78%
1899 0.00% 69.45%
1901 0.00% 23.46%
1903 0.00% 48.69%
1905 0.00% 57.45%
1907 25.90% 5.95%
1909 5.29% 0.00%
1911 11.67% 18.04%
1913 0.00% 23.89%
1915 3.53% 0.00%
1917 0.00% 23.12%
1919 0.00% 9.79%
1921 2.75% 0.00%
1923 0.00% 25.70%
1925 29.55% 0.00%
1927 37.91% 0.00%
1929 0.00% 67.86%
1931 24.19% 0.00%
1933 0.00% 37.11%
1935 5.45% 0.00%
1937 0.51% 6.50%
1939 5.28% 43.91%
1941 0.55% 5.99%
1943 2.96% 0.00%
1945 0.00% 0.00%
1947 0.86% 29.47%
1949 14.35% 28.91%
1951 0.00% 0.00%
1953 2.32% 0.00%
1955 0.00% 20.35%
1957 36.59% 0.00%
1959 1.10% 2.47%
1961 10.23% 0.00%
1963 25.36% 25.70%
1965 0.00% 1.17%
1967 0.94% 4.57%
1969 0.00% 2.70%
1971 0.00% 0.00%
1973 0.00% 1.94%
1975 1.10% 1.78%
1977 8.70% 0.00%
1979 0.00% 41.48%
1981 5.62% 0.00%
1983 17.62% 0.00%
1985 0.00% 7.95%
1987 20.00% 0.00%
1989 0.00% 45.40%
1991 53.59% 0.00%
1993 0.00% 10.38%
1995 34.20% 0.00%
1997 6.83% 0.00%
1999 53.36% 0.00%
2001 4.48% 0.00%
2003 0.00% 0.00%
2005 14.73% 0.00%
2007 0.00% 10.13%
2009 15.12% 0.00%
2011 0.00% 0.00%
2013 0.83% 0.00%