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

NCEI added Alaska climate divisions to its nClimDiv dataset on Friday, March 6, 2015, coincident with the release of the February 2015 monthly monitoring report. For more information on this data, please visit the Alaska Climate Divisions FAQ.

Contiguous United States percentage area products are derived from standardized temperature and precipitation values, which are based on the U.S. Climate Divisional Dataset. Climate divisions with a standardized anomaly in the top ten percent (> 90th percentile) of their historical distribution are considered "very warm/wet" and those in the bottom ten percent (< 10th percentile) are classified as "very cold/dry". For more information please contact NCEI.Monitoring.info@noaa.gov.

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March Very Warm: Very Cold:
1895 0.00% 6.03%
1896 0.00% 21.95%
1897 9.36% 36.57%
1898 9.58% 16.64%
1899 0.00% 29.52%
1900 29.15% 9.84%
1901 0.00% 0.00%
1902 5.73% 6.41%
1903 21.04% 1.18%
1904 16.04% 6.99%
1905 28.80% 0.00%
1906 0.00% 50.45%
1907 49.66% 1.12%
1908 30.69% 0.00%
1909 0.00% 1.32%
1910 88.35% 0.00%
1911 20.02% 1.69%
1912 0.45% 46.61%
1913 1.77% 14.75%
1914 6.25% 9.92%
1915 6.05% 48.47%
1916 22.99% 9.53%
1917 0.00% 34.29%
1918 46.81% 0.00%
1919 0.00% 5.53%
1920 0.00% 0.35%
1921 60.97% 0.00%
1922 0.00% 16.51%
1923 0.00% 17.68%
1924 0.00% 34.66%
1925 11.17% 0.00%
1926 10.56% 24.44%
1927 0.54% 0.00%
1928 4.23% 0.00%
1929 8.08% 0.00%
1930 0.00% 3.44%
1931 1.06% 19.14%
1932 0.00% 28.68%
1933 0.00% 0.00%
1934 31.18% 0.77%
1935 35.79% 6.65%
1936 6.05% 0.00%
1937 0.00% 4.97%
1938 46.06% 0.22%
1939 0.00% 1.97%
1940 8.96% 6.18%
1941 7.91% 27.14%
1942 1.80% 3.34%
1943 0.00% 13.22%
1944 0.00% 9.26%
1945 49.75% 7.00%
1946 51.14% 0.00%
1947 4.91% 31.04%
1948 1.10% 31.43%
1949 0.00% 0.00%
1950 0.00% 7.54%
1951 0.00% 22.08%
1952 0.00% 34.85%
1953 11.40% 0.00%
1954 0.00% 4.42%
1955 1.11% 15.64%
1956 0.00% 3.89%
1957 0.00% 0.00%
1958 1.10% 37.67%
1959 2.14% 0.00%
1960 2.27% 54.41%
1961 4.71% 0.00%
1962 0.00% 16.84%
1963 5.56% 0.00%
1964 0.00% 17.15%
1965 0.00% 54.36%
1966 0.00% 0.00%
1967 23.85% 1.67%
1968 21.76% 2.13%
1969 0.00% 53.61%
1970 0.00% 6.36%
1971 0.00% 7.28%
1972 41.64% 1.16%
1973 32.62% 8.18%
1974 28.98% 0.00%
1975 0.00% 2.19%
1976 11.23% 4.11%
1977 17.69% 2.93%
1978 18.96% 2.66%
1979 2.28% 0.00%
1980 0.00% 0.00%
1981 16.50% 0.00%
1982 0.45% 0.00%
1983 3.54% 0.00%
1984 3.48% 10.03%
1985 6.73% 1.84%
1986 51.16% 0.00%
1987 4.55% 1.20%
1988 0.81% 0.00%
1989 19.56% 0.00%
1990 7.42% 0.00%
1991 0.16% 4.58%
1992 30.25% 0.00%
1993 7.74% 0.00%
1994 31.54% 0.00%
1995 0.38% 0.00%
1996 0.35% 2.61%
1997 31.50% 0.00%
1998 0.14% 0.00%
1999 16.24% 0.00%
2000 38.80% 0.00%
2001 11.19% 0.00%
2002 0.51% 9.10%
2003 4.05% 0.00%
2004 62.52% 0.00%
2005 6.34% 0.00%
2006 5.83% 5.25%
2007 79.00% 0.00%
2008 0.00% 0.00%
2009 5.22% 0.21%
2010 18.52% 2.05%
2011 15.77% 0.00%
2012 77.99% 0.00%
2013 15.75% 9.52%
2014 16.33% 8.99%
2015 46.52% 2.08%
2016 84.69% 0.00%
2017 51.69% 0.00%