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 Warm: Very Cold:
1895 0.00% 63.49%
1896 0.58% 0.00%
1897 0.00% 1.78%
1898 1.94% 0.00%
1899 0.00% 69.45%
1900 0.00% 15.43%
1901 0.00% 23.46%
1902 0.00% 29.86%
1903 0.00% 48.69%
1904 8.55% 25.87%
1905 0.00% 57.45%
1906 4.40% 0.00%
1907 25.90% 5.95%
1908 0.00% 3.24%
1909 5.29% 0.00%
1910 0.00% 19.27%
1911 11.67% 18.04%
1912 0.00% 25.90%
1913 0.00% 23.89%
1914 0.00% 25.67%
1915 3.53% 0.00%
1916 3.93% 0.82%
1917 0.00% 23.12%
1918 3.30% 1.68%
1919 0.00% 9.79%
1920 1.10% 0.99%
1921 2.75% 0.00%
1922 6.12% 26.03%
1923 0.00% 25.70%
1924 13.47% 2.90%
1925 29.55% 0.00%
1926 20.60% 0.00%
1927 37.91% 0.00%
1928 0.00% 0.00%
1929 0.00% 67.86%
1930 56.95% 0.00%
1931 24.19% 0.00%
1932 42.58% 5.10%
1933 0.00% 37.11%
1934 21.03% 16.96%
1935 5.45% 0.00%
1936 0.00% 58.88%
1937 0.51% 6.50%
1938 26.14% 0.89%
1939 5.28% 43.91%
1940 0.00% 0.45%
1941 0.55% 5.99%
1942 0.00% 14.39%
1943 2.96% 0.00%
1944 7.89% 2.31%
1945 0.00% 0.00%
1946 3.41% 0.35%
1947 0.86% 29.47%
1948 0.00% 3.73%
1949 14.35% 28.91%
1950 6.87% 0.00%
1951 0.00% 0.00%
1952 2.98% 2.75%
1953 2.32% 0.00%
1954 73.14% 0.00%
1955 0.00% 20.35%
1956 4.99% 27.31%
1957 36.59% 0.00%
1958 14.63% 34.26%
1959 1.10% 2.47%
1960 1.94% 28.51%
1961 10.23% 0.00%
1962 20.91% 1.71%
1963 25.36% 25.70%
1964 0.00% 20.81%
1965 0.00% 1.17%
1966 0.00% 14.96%
1967 0.94% 4.57%
1968 16.28% 22.23%
1969 0.00% 2.70%
1970 7.31% 0.00%
1971 0.00% 0.00%
1972 0.00% 0.00%