Home > Climate Monitoring > Temp, Precip, and Drought > U.S. Percentage Areas (Very Warm/Cold, Very Wet/Dry)

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

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.

Move mouse towards an axis until highlighted. Left-click mouse to pan. Shift key + left-click to zoom.

June Very Warm: Very Cold:
1895 8.67% 6.35%
1896 26.18% 0.14%
1897 6.45% 6.44%
1898 10.23% 0.00%
1899 8.15% 3.73%
1900 29.42% 0.02%
1901 5.49% 15.44%
1902 18.16% 21.01%
1903 7.91% 55.11%
1904 4.49% 10.50%
1905 0.00% 4.17%
1906 1.50% 13.84%
1907 0.00% 38.87%
1908 1.62% 16.04%
1909 0.46% 0.00%
1910 2.87% 17.44%
1911 38.74% 2.63%
1912 0.17% 42.62%
1913 1.38% 12.37%
1914 23.67% 3.08%
1915 3.07% 42.79%
1916 4.31% 41.93%
1917 0.00% 25.60%
1918 45.62% 5.06%
1919 16.88% 18.01%
1920 0.00% 6.72%
1921 25.97% 3.18%
1922 10.18% 0.00%
1923 5.64% 17.04%
1924 9.39% 13.12%
1925 30.21% 2.22%
1926 11.93% 19.98%
1927 1.54% 18.85%
1928 0.00% 43.69%
1929 0.00% 1.48%
1930 3.66% 1.81%
1931 26.82% 1.68%
1932 2.78% 4.66%
1933 43.76% 2.23%
1934 38.41% 4.35%
1935 1.88% 19.18%
1936 24.50% 1.39%
1937 2.99% 0.00%
1938 1.88% 0.89%
1939 7.40% 4.36%
1940 19.56% 7.62%
1941 0.54% 13.66%
1942 1.49% 5.99%
1943 24.43% 18.07%
1944 17.93% 17.47%
1945 1.21% 44.12%
1946 2.29% 2.42%
1947 0.10% 24.84%
1948 4.57% 2.06%
1949 9.87% 0.00%
1950 1.09% 0.00%
1951 0.00% 32.78%
1952 44.04% 7.10%
1953 35.13% 12.03%
1954 5.29% 10.37%
1955 0.10% 30.94%
1956 33.51% 2.47%
1957 6.48% 0.00%
1958 10.49% 22.77%
1959 12.77% 1.10%
1960 10.41% 0.00%
1961 30.35% 17.10%
1962 0.00% 1.30%
1963 1.18% 9.03%
1964 0.00% 2.47%
1965 0.17% 22.14%
1966 0.17% 11.17%
1967 3.99% 20.22%
1968 0.00% 3.63%
1969 3.56% 29.52%
1970 7.50% 4.43%
1971 9.21% 3.08%
1972 0.00% 19.05%
1973 2.36% 5.78%
1974 16.29% 27.09%
1975 0.00% 6.22%
1976 5.18% 19.83%
1977 26.00% 6.00%
1978 1.44% 0.00%
1979 0.46% 12.12%
1980 13.42% 14.81%
1981 24.64% 2.17%
1982 1.52% 40.52%
1983 0.04% 23.05%
1984 0.76% 1.92%
1985 9.70% 15.78%
1986 28.70% 1.90%
1987 15.91% 3.80%
1988 29.96% 2.15%
1989 1.86% 11.82%
1990 21.80% 0.00%
1991 9.22% 7.69%
1992 7.64% 32.83%
1993 0.80% 10.35%
1994 28.51% 0.00%
1995 6.06% 17.02%
1996 11.51% 0.00%
1997 2.42% 13.52%
1998 20.92% 19.09%
1999 3.89% 0.28%
2000 12.71% 2.03%
2001 11.16% 1.17%
2002 23.37% 0.93%
2003 6.21% 17.76%
2004 3.64% 7.07%
2005 11.71% 1.62%
2006 31.72% 0.21%
2007 10.88% 2.24%
2008 17.16% 0.44%
2009 9.77% 1.67%
2010 38.29% 0.37%
2011 29.73% 1.05%
2012 28.69% 2.56%
2013 23.71% 0.00%