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.

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March Very Warm: Very Cold:
1895 5.91% 6.45%
1896 4.40% 14.64%
1897 9.89% 30.17%
1898 13.25% 13.32%
1899 3.09% 25.24%
1900 25.98% 9.18%
1901 2.53% 1.20%
1902 7.44% 4.67%
1903 21.91% 0.00%
1904 14.20% 6.15%
1905 37.85% 0.00%
1906 0.44% 47.76%
1907 50.07% 0.71%
1908 30.09% 0.00%
1909 0.10% 0.16%
1910 92.08% 0.00%
1911 24.43% 0.67%
1912 0.00% 46.59%
1913 3.14% 17.77%
1914 9.05% 7.10%
1915 10.29% 49.59%
1916 20.82% 9.66%
1917 0.46% 35.35%
1918 45.90% 0.00%
1919 0.00% 1.08%
1920 0.00% 0.00%
1921 63.68% 0.00%
1922 0.00% 9.75%
1923 0.08% 25.11%
1924 0.00% 34.52%
1925 10.94% 0.00%
1926 12.55% 21.95%
1927 1.86% 0.00%
1928 7.63% 0.15%
1929 12.86% 0.00%
1930 0.00% 0.48%
1931 1.40% 19.34%
1932 0.00% 30.94%
1933 0.88% 0.00%
1934 31.81% 0.95%
1935 38.48% 6.11%
1936 10.17% 0.06%
1937 0.00% 8.52%
1938 48.51% 4.36%
1939 0.00% 1.80%
1940 8.57% 6.73%
1941 7.08% 28.08%
1942 2.79% 4.75%
1943 0.77% 17.18%
1944 0.00% 10.97%
1945 51.99% 6.07%
1946 52.59% 0.00%
1947 3.29% 32.57%
1948 1.54% 31.45%
1949 0.00% 0.47%
1950 0.00% 7.91%
1951 0.00% 21.19%
1952 0.08% 33.87%
1953 12.69% 0.00%
1954 0.00% 4.08%
1955 1.35% 16.04%
1956 0.00% 3.83%
1957 0.00% 0.00%
1958 1.19% 35.25%
1959 3.34% 0.00%
1960 2.58% 54.77%
1961 4.98% 0.00%
1962 0.00% 19.80%
1963 7.11% 0.00%
1964 0.00% 19.00%
1965 0.00% 56.13%
1966 0.00% 0.00%
1967 24.59% 2.42%
1968 22.45% 2.65%
1969 0.00% 58.51%
1970 0.00% 8.06%
1971 0.00% 9.13%
1972 40.67% 1.16%
1973 33.63% 9.68%
1974 28.88% 0.00%
1975 0.00% 3.46%
1976 9.99% 3.18%
1977 17.47% 5.58%
1978 17.19% 3.42%
1979 2.75% 0.00%
1980 0.00% 0.00%
1981 17.44% 0.00%
1982 2.20% 0.00%
1983 5.60% 0.40%
1984 7.00% 11.25%
1985 5.28% 1.83%
1986 52.99% 0.00%
1987 5.51% 3.09%
1988 2.32% 0.00%
1989 19.39% 0.80%
1990 10.43% 0.00%
1991 0.26% 3.38%
1992 31.02% 0.85%
1993 9.54% 0.24%
1994 27.75% 0.00%
1995 2.46% 0.00%
1996 1.24% 12.34%
1997 29.89% 0.59%
1998 0.69% 0.00%
1999 16.59% 0.35%
2000 31.75% 0.00%
2001 10.58% 3.70%
2002 0.62% 13.03%
2003 10.37% 0.00%
2004 59.72% 0.00%
2005 7.38% 0.43%
2006 3.34% 5.55%
2007 72.85% 0.00%
2008 1.09% 0.59%
2009 4.35% 1.09%
2010 16.95% 3.77%
2011 11.73% 0.00%
2012 75.36% 0.37%