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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January Very Warm: Very Cold:
1895 0.00% 1.70%
1896 3.68% 0.00%
1897 0.00% 4.04%
1898 1.11% 18.60%
1899 0.35% 1.77%
1900 10.12% 0.00%
1901 0.00% 0.00%
1902 0.00% 0.36%
1903 0.00% 0.00%
1904 0.00% 9.45%
1905 1.25% 14.44%
1906 6.80% 0.00%
1907 30.21% 13.38%
1908 0.52% 0.00%
1909 16.64% 2.79%
1910 0.00% 1.91%
1911 25.07% 0.52%
1912 0.00% 38.38%
1913 17.04% 9.62%
1914 20.53% 0.00%
1915 0.00% 1.96%
1916 12.90% 24.07%
1917 0.00% 18.37%
1918 0.10% 57.55%
1919 11.85% 10.08%
1920 0.90% 9.16%
1921 18.37% 0.00%
1922 0.00% 19.63%
1923 27.03% 0.00%
1924 0.00% 6.90%
1925 0.45% 6.73%
1926 0.00% 4.43%
1927 4.29% 0.00%
1928 0.25% 0.00%
1929 0.00% 26.51%
1930 0.00% 49.93%
1931 16.27% 0.00%
1932 28.25% 14.32%
1933 43.11% 6.91%
1934 19.12% 0.00%
1935 10.84% 1.10%
1936 0.00% 9.94%
1937 22.34% 54.52%
1938 0.56% 0.00%
1939 9.43% 0.00%
1940 0.00% 52.18%
1941 0.00% 0.00%
1942 2.69% 0.58%
1943 0.00% 1.59%
1944 12.90% 0.64%
1945 0.19% 4.87%
1946 0.00% 0.48%
1947 3.39% 0.63%
1948 2.34% 14.17%
1949 19.09% 47.78%
1950 34.10% 20.27%
1951 0.00% 0.00%
1952 23.90% 0.00%
1953 46.91% 0.00%
1954 3.82% 0.00%
1955 0.00% 7.06%
1956 12.01% 0.45%
1957 3.36% 16.65%
1958 7.61% 1.54%
1959 0.35% 0.74%
1960 0.00% 1.67%
1961 1.00% 2.67%
1962 0.00% 7.93%
1963 0.00% 38.26%
1964 1.93% 2.19%
1965 4.88% 0.00%
1966 0.00% 12.25%
1967 2.56% 0.00%
1968 0.00% 2.19%
1969 9.35% 7.85%
1970 0.00% 17.69%
1971 1.44% 1.89%
1972 2.05% 1.44%
1973 0.00% 4.20%
1974 13.42% 0.90%
1975 0.84% 0.00%
1976 0.00% 0.43%
1977 0.00% 49.69%
1978 2.82% 43.66%
1979 0.00% 65.29%
1980 3.61% 0.00%
1981 31.45% 7.86%
1982 0.00% 26.74%
1983 12.79% 0.00%
1984 0.00% 3.07%
1985 0.00% 15.54%
1986 38.77% 0.00%
1987 9.48% 0.00%
1988 0.00% 1.80%
1989 26.20% 0.00%
1990 48.74% 0.00%
1991 0.84% 0.00%
1992 19.81% 0.00%
1993 3.74% 0.00%
1994 8.55% 13.87%
1995 5.27% 0.00%
1996 2.60% 0.00%
1997 0.00% 0.00%
1998 21.35% 0.00%
1999 21.41% 0.00%
2000 20.98% 0.00%
2001 3.92% 0.84%
2002 19.99% 0.00%
2003 33.68% 0.84%
2004 0.00% 3.54%
2005 20.42% 0.00%
2006 67.97% 0.00%
2007 3.87% 1.72%
2008 0.33% 0.25%
2009 10.67% 2.57%
2010 6.61% 0.84%
2011 0.46% 0.00%
2012 44.25% 0.00%
2013 2.67% 0.91%
2014 15.30% 6.37%
2015 25.39% 0.00%
2016 1.58% 0.00%
2017 30.10% 0.00%