Average Monthly Temperatures for January Boise, Idaho for the 148-year period 1865 through 2012 normal(1981-10) = 31.3 F degrees RANK RANK AMONG AMONG DATA YEAR COLDEST WARMEST 10.3 1949 w- 1 148 15.4 1937 c- 2 147 16.2 1979 3 146 16.4 1868 4 145 17.7 1888 5 144 17.9 1930 c+ 6 143 18.8 1875 7 142 19.0 1977 w- 8 141 19.1 1985 9 140 20.6 1922 c+ 10 139 20.7 1942 w+ 11 138 21.0 1883 12 137 21.1 1962 c+ 13 136 21.2 1984 14 135 21.5 1957 c- 15 134 22.2 1892 16 tie 22.2 1898 c tie 132 23.1 1929 c+ 18 131 23.2 1890 19 tie 23.2 1917 c+ tie tie 23.2 1947 w tie 128 23.3 1963 c 22 127 23.5 1955 c 23 126 23.6 1924 w- 24 125 23.9 1889 25 124 24.0 1885 26 tie 24.0 1960 c- tie 122 24.2 1910 c+ 28 121 24.4 1991 29 120 24.7 1865 30 tie 24.7 1989 c+ tie 118 24.8 1982 c 32 tie 24.8 1993 w+ tie 116 24.9 1882 34 115 25.0 1866 35 tie 25.0 1944 w- tie 113 25.4 1950 c+ 37 112 26.0 1964 w 38 111 26.1 1891 39 tie 26.1 1988 w- tie 109 26.4 1893 41 108 26.5 1879 42 107 26.6 1952 w+ 43 106 27.2 1932 w- 44 tie 27.2 2001 tie 104 27.4 1916 c- 46 103 27.6 1915 w+ 47 102 27.8 1987 w+ 48 101 28.0 1884 49 tie 28.0 1913 w tie 99 28.2 1886 51 tie 28.2 1943 c+ tie tie 28.2 1975 tie 96 28.4 2004 54 95 28.5 1902 c 55 94 28.8 1912 w+ 56 93 29.0 1946 57 tie 29.0 2008 c+ tie 91 29.1 1951 c+ 59 90 29.2 2007 w- 60 89 29.4 1928 61 tie 29.4 1974 c+ tie tie 29.4 1986 tie 86 29.5 1968 c- 64 85 29.8 1870 65 84 29.9 1897 w+ 66 83 30.1 1920 w- 67 82 30.2 1907 c- 68 tie 30.2 1931 tie 80 30.3 1980 70 79 30.4 1926 w+ 71 78 30.5 1881 72 77 30.6 1906 w+ 73 76 30.7 1973 w+ 74 75 30.9 1972 c- 75 74 31.0 1895 76 tie 31.0 1935 c- tie 72 31.1 1867 78 71 31.3 2009 c- 79 70 31.5 1958 w+ 80 tie 31.5 2002 tie 68 31.6 1936 82 67 31.7 2011 c+ 83 66 31.8 1927 84 tie 31.8 1933 w- tie 64 31.9 1869 86 63 32.1 1997 87 62 32.2 1894 88 tie 32.2 1903 w tie tie 32.2 1945 c- tie tie 32.2 1976 c+ tie 58 32.4 1966 w 92 57 32.5 1872 93 tie 32.5 1876 tie tie 32.5 1996 c- tie 54 32.6 1925 c+ 96 53 32.7 1904 c+ 97 tie 32.7 1994 tie 51 32.8 1919 w+ 99 tie 32.8 2005 c- tie 49 32.9 1961 101 48 33.0 1940 w 102 tie 33.0 1948 tie 46 33.1 1992 w+ 104 45 33.2 1896 105 tie 33.2 1941 w+ tie 43 33.4 1871 107 42 33.5 1911 c 108 tie 33.5 1956 c+ tie 40 33.6 1877 110 tie 33.6 1905 w+ tie 38 33.8 1873 112 37 33.9 1971 c+ 113 tie 33.9 1981 tie 35 34.0 1939 c+ 115 34 34.1 1965 116 33 34.2 1990 w+ 117 tie 34.2 2000 c+ tie 31 34.3 1969 w+ 119 30 34.4 1918 c+ 120 29 34.5 1878 121 28 34.8 1901 122 tie 34.8 1921 c+ tie tie 34.8 2012 c- tie 25 35.2 1908 125 24 35.3 1999 c+ 126 23 35.5 1923 c 127 22 35.8 1899 c 128 tie 35.8 1959 w+ tie 20 35.9 1938 c 130 tie 35.9 1983 w+ tie 18 36.2 1887 132 tie 36.2 1967 c+ tie tie 36.2 1970 w tie tie 36.2 1995 w tie tie 36.4 1909 w- tie tie 36.4 2006 w- tie 12 36.5 1954 138 11 36.8 1900 w 139 10 37.0 1978 w+ 140 9 37.4 2010 W+ 141 8 37.8 1914 w- 142 7 37.9 1880 143 6 38.7 2003 w 144 5 38.9 1998 w+ 145 4 39.2 1874 146 3 39.8 1934 c 147 2 41.0 1953 w 148 1 2/6/2012 c = la nina w = el nino weak c- or w- moderate c or w strong c+ or w+ average january temperatures at boise, all sites.txt