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.

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July Very Warm: Very Cold:
1895 0.00% 49.81%
1896 9.37% 6.65%
1897 6.45% 20.38%
1898 5.49% 1.39%
1899 0.52% 5.58%
1900 3.61% 5.53%
1901 49.30% 4.17%
1902 5.39% 39.18%
1903 0.48% 37.94%
1904 0.00% 50.51%
1905 0.40% 43.34%
1906 11.29% 33.06%
1907 0.69% 21.60%
1908 4.44% 14.34%
1909 4.33% 24.02%
1910 2.59% 1.33%
1911 3.44% 28.84%
1912 0.00% 32.27%
1913 3.96% 32.30%
1914 7.26% 14.06%
1915 0.55% 51.25%
1916 19.94% 13.84%
1917 9.78% 0.84%
1918 1.17% 23.38%
1919 5.95% 7.11%
1920 2.09% 15.47%
1921 19.93% 6.77%
1922 0.93% 13.56%
1923 1.60% 7.25%
1924 0.00% 37.46%
1925 13.86% 7.13%
1926 1.67% 10.25%
1927 0.48% 14.80%
1928 0.09% 4.81%
1929 0.00% 1.83%
1930 18.20% 0.73%
1931 38.72% 0.73%
1932 12.09% 7.97%
1933 19.11% 0.50%
1934 50.25% 0.45%
1935 23.96% 3.00%
1936 43.65% 3.27%
1937 1.02% 0.45%
1938 2.95% 9.87%
1939 4.47% 0.38%
1940 2.58% 3.03%
1941 4.43% 8.55%
1942 7.89% 1.11%
1943 1.19% 0.08%
1944 0.00% 13.75%
1945 0.00% 9.71%
1946 0.10% 1.59%
1947 2.56% 26.25%
1948 2.03% 9.71%
1949 12.77% 0.52%
1950 0.00% 59.29%
1951 10.79% 3.93%
1952 16.83% 2.36%
1953 4.31% 0.00%
1954 36.15% 4.40%
1955 24.66% 18.42%
1956 2.88% 13.76%
1957 5.81% 0.29%
1958 5.94% 26.95%
1959 12.48% 9.30%
1960 16.85% 9.19%
1961 1.13% 14.27%
1962 3.50% 39.17%
1963 7.97% 15.93%
1964 6.40% 2.80%
1965 0.00% 16.34%
1966 18.71% 3.25%
1967 0.54% 34.22%
1968 1.99% 11.08%
1969 14.36% 1.31%
1970 0.98% 1.27%
1971 2.24% 27.62%
1972 3.09% 30.20%
1973 0.59% 4.62%
1974 4.69% 3.10%
1975 7.99% 14.90%
1976 0.00% 22.15%
1977 4.10% 0.00%
1978 7.09% 2.05%
1979 1.10% 5.30%
1980 38.79% 0.00%
1981 5.56% 0.71%
1982 0.00% 6.63%
1983 9.68% 16.61%
1984 3.52% 12.47%
1985 12.23% 0.36%
1986 14.36% 30.17%
1987 6.70% 22.92%
1988 22.34% 0.00%
1989 14.29% 6.37%
1990 4.04% 10.18%
1991 3.06% 5.10%
1992 3.17% 45.26%
1993 15.90% 37.89%
1994 21.71% 15.03%
1995 5.35% 8.41%
1996 19.99% 14.90%
1997 0.95% 4.19%
1998 36.14% 0.00%
1999 18.38% 3.49%
2000 13.80% 11.41%
2001 16.43% 7.48%
2002 40.55% 1.17%
2003 38.92% 0.00%
2004 4.95% 13.69%
2005 32.78% 0.00%
2006 49.41% 0.00%
2007 32.28% 12.10%
2008 7.23% 1.45%
2009 17.69% 36.21%
2010 24.71% 0.00%
2011 55.12% 2.40%
2012 60.74% 0.00%
2013 26.78% 6.39%
2014 25.22% 29.40%
2015 13.08% 5.40%
2016 36.30% 0.00%
2017 36.87% 0.00%