Contiguous 48 U.S. Surface Air Temperature Anomaly (C) ------------------------------------------------------ year Annual_Mean 5-year_Mean --------------------------------- 1880 -0.5510 * 1881 -0.0210 * 1882 -0.0960 -0.4534 1883 -0.9030 -0.4932 1884 -0.6960 -0.6040 1885 -0.7500 -0.6460 1886 -0.5750 -0.5880 1887 -0.3060 -0.4340 1888 -0.6130 -0.2862 1889 0.0740 -0.2460 1890 -0.0110 -0.3114 1891 -0.3740 -0.3336 1892 -0.6330 -0.3340 1893 -0.7240 -0.4738 1894 0.0720 -0.3654 1895 -0.7100 -0.2608 1896 0.1680 -0.1486 1897 -0.1100 -0.2420 1898 -0.1630 0.0142 1899 -0.3950 -0.0070 1900 0.5710 0.0062 1901 0.0620 -0.0792 1902 -0.0440 -0.0698 1903 -0.5900 -0.2652 1904 -0.3480 -0.2744 1905 -0.4060 -0.3002 1906 0.0160 -0.1502 1907 -0.1730 -0.1212 1908 0.1600 0.0306 1909 -0.2030 0.0578 1910 0.3530 -0.0772 1911 0.1520 -0.1298 1912 -0.8480 -0.0798 1913 -0.1030 -0.1830 1914 0.0470 -0.3132 1915 -0.1630 -0.3380 1916 -0.4990 -0.3092 1917 -0.9720 -0.3456 1918 0.0410 -0.3948 1919 -0.1350 -0.0734 1920 -0.4090 0.1518 1921 1.1080 0.1276 1922 0.1540 0.0198 1923 -0.0800 0.1786 1924 -0.6740 -0.0338 1925 0.3850 -0.0274 1926 0.0460 0.0018 1927 0.1860 0.0312 1928 0.0660 -0.0232 1929 -0.5270 0.1666 1930 0.1130 0.1246 1931 0.9950 0.2432 1932 -0.0240 0.5936 1933 0.6590 0.5796 1934 1.2250 0.4148 1935 0.0430 0.3932 1936 0.1710 0.4172 1937 -0.1320 0.3320 1938 0.7790 0.3296 1939 0.7990 0.4006 1940 0.0310 0.4352 1941 0.5260 0.3076 1942 0.0410 0.1582 1943 0.1410 0.1454 1944 0.0520 0.1690 1945 -0.0330 0.1728 1946 0.6440 0.1260 1947 0.0600 0.1492 1948 -0.0930 0.1090 1949 0.1680 -0.0990 1950 -0.2340 -0.0570 1951 -0.3960 0.1338 1952 0.2700 0.2616 1953 0.8610 0.2952 1954 0.8070 0.4260 1955 -0.0660 0.3970 1956 0.2580 0.2350 1957 0.1250 0.1018 1958 0.0510 0.0684 1959 0.1410 0.0172 1960 -0.2330 -0.0082 1961 0.0020 0.0202 1962 -0.0020 -0.0280 1963 0.1930 -0.0054 1964 -0.1000 -0.0502 1965 -0.1200 -0.0662 1966 -0.2220 -0.1642 1967 -0.0820 -0.1844 1968 -0.2970 -0.1872 1969 -0.2010 -0.1630 1970 -0.1340 -0.2068 1971 -0.1010 -0.0990 1972 -0.3010 -0.0202 1973 0.2420 -0.0342 1974 0.1930 -0.0650 1975 -0.2040 0.0680 1976 -0.2550 -0.0764 1977 0.3640 -0.2272 1978 -0.4800 -0.1370 1979 -0.5610 0.0468 1980 0.2470 -0.0890 1981 0.6640 0.0086 1982 -0.3150 0.1294 1983 0.0080 0.0074 1984 0.0430 0.0256 1985 -0.3630 0.2460 1986 0.7550 0.3156 1987 0.7870 0.2868 1988 0.3560 0.5392 1989 -0.1010 0.5258 1990 0.8990 0.4362 1991 0.6880 0.2906 1992 0.3390 0.4160 1993 -0.3720 0.3200 1994 0.5260 0.1700 1995 0.4190 0.1296 1996 -0.0620 0.4646 1997 0.1370 0.5720 1998 1.3030 0.6262 1999 1.0630 0.8210 2000 0.6900 0.9258 2001 0.9120 0.8008 2002 0.6610 0.7076 2003 0.6780 0.7508 2004 0.5970 0.8248 2005 0.9060 0.8762 2006 1.2820 0.7700 2007 0.9180 0.6864 2008 0.1470 0.6226 2009 0.1790 0.4980 2010 0.5870 * 2011 0.6590 *