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

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.

Place mouse on axis and left-click to pan; wheel up/down for zoom in/out (or shift key+left-click).

Download: xml csv json
February Very Wet: Very Dry:
1895 10.12% 23.27%
1896 8.08% 14.04%
1897 29.46% 9.37%
1898 4.07% 22.77%
1899 15.59% 9.67%
1900 17.98% 7.32%
1901 15.67% 9.87%
1902 18.95% 8.88%
1903 33.31% 7.46%
1904 20.62% 12.64%
1905 19.83% 7.53%
1906 3.15% 14.09%
1907 3.78% 12.75%
1908 25.99% 2.61%
1909 21.53% 7.18%
1910 7.82% 13.66%
1911 22.08% 8.75%
1912 9.03% 12.54%
1913 8.17% 12.33%
1914 3.13% 1.40%
1915 28.06% 1.92%
1916 4.31% 19.65%
1917 4.59% 13.94%
1918 2.67% 17.60%
1919 23.93% 0.16%
1920 8.04% 21.23%
1921 0.29% 10.65%
1922 15.08% 2.07%
1923 9.90% 13.86%
1924 3.17% 11.61%
1925 0.71% 18.22%
1926 3.88% 19.14%
1927 18.21% 0.36%
1928 7.47% 12.34%
1929 4.94% 8.31%
1930 4.80% 15.02%
1931 12.78% 9.74%
1932 10.24% 5.16%
1933 0.61% 10.27%
1934 3.78% 19.29%
1935 1.06% 8.92%
1936 25.03% 10.90%
1937 5.30% 7.60%
1938 15.33% 9.04%
1939 25.15% 3.02%
1940 15.76% 0.00%
1941 7.10% 19.04%
1942 3.42% 2.38%
1943 0.69% 22.24%
1944 11.90% 2.07%
1945 11.57% 2.44%
1946 3.28% 13.97%
1947 0.75% 38.31%
1948 17.92% 3.19%
1949 8.07% 6.27%
1950 9.03% 10.10%
1951 15.40% 6.93%
1952 7.31% 2.71%
1953 9.02% 4.05%
1954 3.30% 25.29%
1955 11.12% 4.56%
1956 12.43% 4.94%
1957 2.85% 6.39%
1958 14.25% 7.95%
1959 6.00% 0.40%
1960 11.94% 2.14%
1961 13.39% 6.80%
1962 25.95% 5.34%
1963 2.14% 12.52%
1964 3.21% 29.88%
1965 5.59% 9.88%
1966 6.39% 1.26%
1967 0.00% 28.85%
1968 1.56% 27.32%
1969 15.73% 11.71%
1970 3.95% 23.16%
1971 19.00% 5.42%
1972 6.04% 28.73%
1973 4.60% 13.89%
1974 0.00% 20.41%
1975 4.54% 0.87%
1976 5.87% 15.70%
1977 1.42% 27.50%
1978 11.61% 21.86%
1979 12.16% 4.36%
1980 12.21% 13.61%
1981 9.82% 9.32%
1982 5.51% 6.37%
1983 8.96% 8.24%
1984 5.01% 8.64%
1985 7.98% 7.11%
1986 23.54% 3.56%
1987 23.92% 15.03%
1988 1.06% 17.80%
1989 9.99% 8.09%
1990 18.22% 3.30%
1991 2.35% 25.80%
1992 11.61% 5.79%
1993 15.97% 5.53%
1994 3.32% 5.69%
1995 0.00% 5.81%
1996 3.18% 23.29%
1997 19.87% 6.46%
1998 29.31% 3.72%
1999 9.33% 23.25%
2000 13.59% 11.87%
2001 15.42% 9.58%
2002 1.28% 26.29%
2003 15.62% 1.71%
2004 11.73% 6.12%
2005 14.76% 14.55%
2006 0.15% 23.08%
2007 4.07% 9.58%
2008 15.27% 3.19%
2009 5.62% 14.20%
2010 4.47% 5.78%
2011 8.80% 8.12%
2012 10.99% 3.97%
2013 12.36% 14.33%
2014 9.90% 12.38%
2015 2.74% 4.46%
2016 5.31% 4.47%
2017 14.30% 11.80%