Contiguous 48 U.S. Surface Air Temperature Anomaly (C) ------------------------------------------------------ year Annual_Mean 5-year_Mean --------------------------------- 1880 -0.5440 * 1881 -0.0150 * 1882 -0.0930 -0.4496 1883 -0.9010 -0.4906 1884 -0.6950 -0.6018 1885 -0.7490 -0.6442 1886 -0.5710 -0.5860 1887 -0.3050 -0.4310 1888 -0.6100 -0.2822 1889 0.0800 -0.2400 1890 -0.0050 -0.3088 1891 -0.3600 -0.3340 1892 -0.6490 -0.3372 1893 -0.7360 -0.4780 1894 0.0640 -0.3718 1895 -0.7090 -0.2646 1896 0.1710 -0.1508 1897 -0.1130 -0.2436 1898 -0.1670 0.0130 1899 -0.4000 -0.0080 1900 0.5740 0.0088 1901 0.0660 -0.0748 1902 -0.0290 -0.0644 1903 -0.5850 -0.2606 1904 -0.3480 -0.2706 1905 -0.4070 -0.2986 1906 0.0160 -0.1484 1907 -0.1690 -0.1174 1908 0.1660 0.0366 1909 -0.1930 0.0654 1910 0.3630 -0.0684 1911 0.1600 -0.1210 1912 -0.8380 -0.0720 1913 -0.0970 -0.1760 1914 0.0520 -0.3070 1915 -0.1570 -0.3332 1916 -0.4950 -0.3048 1917 -0.9690 -0.3412 1918 0.0450 -0.3912 1919 -0.1300 -0.0704 1920 -0.4070 0.1540 1921 1.1090 0.1292 1922 0.1530 0.0206 1923 -0.0790 0.1796 1924 -0.6730 -0.0326 1925 0.3880 -0.0256 1926 0.0480 0.0036 1927 0.1880 0.0336 1928 0.0670 -0.0210 1929 -0.5230 0.1686 1930 0.1150 0.1262 1931 0.9960 0.2450 1932 -0.0240 0.5958 1933 0.6610 0.5822 1934 1.2310 0.4176 1935 0.0470 0.3960 1936 0.1730 0.4198 1937 -0.1320 0.3334 1938 0.7800 0.3300 1939 0.7990 0.4006 1940 0.0300 0.4354 1941 0.5260 0.3082 1942 0.0420 0.1594 1943 0.1440 0.1468 1944 0.0550 0.1704 1945 -0.0330 0.1738 1946 0.6440 0.1262 1947 0.0590 0.1488 1948 -0.0940 0.1086 1949 0.1680 -0.0992 1950 -0.2340 -0.0570 1951 -0.3950 0.1338 1952 0.2700 0.2614 1953 0.8600 0.2946 1954 0.8060 0.4248 1955 -0.0680 0.3956 1956 0.2560 0.2332 1957 0.1240 0.0992 1958 0.0480 0.0656 1959 0.1360 0.0142 1960 -0.2360 -0.0110 1961 -0.0010 0.0184 1962 -0.0020 -0.0284 1963 0.1950 -0.0054 1964 -0.0980 -0.0494 1965 -0.1210 -0.0650 1966 -0.2210 -0.1634 1967 -0.0800 -0.1840 1968 -0.2970 -0.1864 1969 -0.2010 -0.1624 1970 -0.1330 -0.2066 1971 -0.1010 -0.0984 1972 -0.3010 -0.0188 1973 0.2440 -0.0320 1974 0.1970 -0.0624 1975 -0.1990 0.0706 1976 -0.2530 -0.0746 1977 0.3640 -0.2258 1978 -0.4820 -0.1364 1979 -0.5590 0.0472 1980 0.2480 -0.0884 1981 0.6650 0.0090 1982 -0.3140 0.1290 1983 0.0050 0.0058 1984 0.0410 0.0228 1985 -0.3680 0.2424 1986 0.7500 0.3128 1987 0.7840 0.2848 1988 0.3570 0.5386 1989 -0.0990 0.5260 1990 0.9010 0.4370 1991 0.6870 0.2912 1992 0.3390 0.4166 1993 -0.3720 0.3206 1994 0.5280 0.1704 1995 0.4210 0.1296 1996 -0.0640 0.4644 1997 0.1350 0.5712 1998 1.3020 0.6250 1999 1.0620 0.8208 2000 0.6900 0.9268 2001 0.9150 0.8026 2002 0.6650 0.7106 2003 0.6810 0.7548 2004 0.6020 0.8294 2005 0.9110 0.8816 2006 1.2880 0.7764 2007 0.9260 0.6930 2008 0.1550 0.6290 2009 0.1850 0.5040 2010 0.5910 * 2011 0.6630 *