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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October Very Warm: Very Cold:
1895 0.00% 54.63%
1896 0.00% 29.14%
1897 12.72% 6.72%
1898 0.00% 35.72%
1899 3.58% 24.40%
1900 36.23% 2.40%
1901 7.18% 0.00%
1902 0.79% 0.46%
1903 0.00% 1.74%
1904 0.13% 2.45%
1905 0.00% 37.20%
1906 0.00% 20.97%
1907 5.63% 11.66%
1908 0.00% 32.90%
1909 0.00% 12.33%
1910 2.98% 0.00%
1911 7.34% 22.67%
1912 0.08% 30.44%
1913 1.92% 40.86%
1914 7.01% 0.00%
1915 0.00% 0.00%
1916 0.00% 30.22%
1917 2.21% 56.73%
1918 9.35% 0.00%
1919 23.66% 47.81%
1920 18.46% 17.33%
1921 3.44% 0.00%
1922 0.47% 0.00%
1923 0.00% 40.95%
1924 11.86% 5.82%
1925 0.00% 54.14%
1926 5.60% 0.38%
1927 0.40% 0.00%
1928 6.35% 0.81%
1929 0.00% 0.90%
1930 0.00% 13.16%
1931 16.89% 0.00%
1932 0.00% 14.27%
1933 16.08% 2.25%
1934 20.70% 2.49%
1935 0.00% 1.11%
1936 1.89% 12.72%
1937 3.58% 1.32%
1938 23.26% 1.10%
1939 1.75% 0.33%
1940 23.77% 6.20%
1941 25.29% 9.21%
1942 0.00% 0.00%
1943 0.00% 1.54%
1944 11.87% 0.84%
1945 0.00% 0.17%
1946 4.90% 36.14%
1947 64.22% 0.00%
1948 0.00% 3.55%
1949 19.79% 19.01%
1950 34.35% 0.17%
1951 1.20% 2.20%
1952 22.89% 37.51%
1953 15.74% 0.45%
1954 4.71% 0.29%
1955 0.91% 0.00%
1956 27.45% 1.30%
1957 0.00% 29.46%
1958 5.36% 1.92%
1959 1.95% 21.00%
1960 0.00% 0.00%
1961 0.00% 0.00%
1962 3.28% 0.00%
1963 67.82% 0.00%
1964 10.59% 13.35%
1965 12.58% 1.54%
1966 0.00% 5.20%
1967 0.81% 1.61%
1968 1.10% 0.00%
1969 0.00% 48.18%
1970 0.59% 34.53%
1971 30.52% 21.50%
1972 0.00% 14.07%
1973 11.35% 0.00%
1974 0.00% 7.82%
1975 0.16% 1.25%
1976 0.00% 66.81%
1977 0.00% 2.96%
1978 8.56% 0.00%
1979 2.99% 0.00%
1980 0.00% 11.51%
1981 0.00% 9.77%
1982 0.00% 9.16%
1983 0.81% 0.00%
1984 18.89% 40.25%
1985 8.87% 2.22%
1986 0.29% 2.40%
1987 17.66% 36.87%
1988 30.14% 34.22%
1989 0.00% 0.00%
1990 4.42% 1.11%
1991 5.98% 3.92%
1992 5.78% 3.28%
1993 2.53% 4.75%
1994 0.00% 0.00%
1995 5.60% 1.62%
1996 0.00% 0.00%
1997 0.00% 0.00%
1998 2.97% 0.00%
1999 6.32% 0.00%
2000 0.00% 0.00%
2001 11.26% 1.36%
2002 6.46% 32.48%
2003 38.44% 0.00%
2004 12.17% 0.00%
2005 0.68% 0.00%
2006 0.00% 3.72%
2007 29.52% 0.71%
2008 0.81% 0.00%
2009 1.54% 50.86%
2010 7.35% 0.00%
2011 3.19% 0.00%
2012 4.37% 0.74%
2013 1.30% 5.49%
2014 40.60% 0.00%
2015 33.55% 0.00%
2016 49.30% 0.00%
2017 17.56% 0.00%