Average Spring Temperatures (Mar,Apr,May) Boise, Idaho for the 148-season period 1864 through 2011 (missing data for 1864, 1866, 1867) normal(1981-10) = 51.5 F degrees RANK RANK AMONG AMONG DATA YEAR COLDEST WARMEST 44.6 1955 c- 1 148 44.9 1917 c+ 2 147 45.4 1896 w 3 146 46.0 1964 c 4 145 46.3 1880 5 144 46.7 1893 6 tie 46.7 1922 tie 142 46.9 1953 w+ 8 141 47.1 1920 9 tie 47.1 1982 w- tie 139 47.2 1950 c+ 11 138 47.3 1882 12 tie 47.3 1899 c- tie 136 47.4 1948 14 tie 47.4 1975 c+ tie 134 47.5 1945 c- 16 tie 47.5 1967 tie tie 47.5 1984 tie 131 47.6 1970 19 130 47.9 1909 w 20 tie 47.9 1933 c- tie tie 47.9 1976 c tie 127 48.1 1959 c 23 tie 48.1 1965 w tie 125 48.2 1951 w 25 124 48.3 1871 26 tie 48.3 1912 w+ tie tie 48.3 1927 c+ tie 121 48.3 1942 w- tie 120 48.4 1892 30 tie 48.4 1935 c- tie 118 48.6 1944 32 tie 48.6 2011 c- tie 116 48.7 1911 34 tie 48.7 1985 c tie tie 48.7 1991 w+ tie 113 48.8 1864 37 tie 48.8 1883 tie tie 48.8 1908 c- tie tie 48.8 1960 c tie 109 48.9 1886 41 tie 48.9 1923 c tie 107 49.0 1952 tie tie 49.0 1962 c- tie tie 49.0 1999 c+ tie 104 49.0 2010 w- 46 tie 49.1 1929 47 102 49.2 1974 c+ 48 tie 49.2 1977 w+ tie 100 49.3 1898 c+ 50 tie 49.3 1943 c+ tie tie 49.3 2008 c tie 97 49.4 1983 w+ 53 96 49.5 1902 c+ 54 tie 49.5 1913 w tie 94 49.6 1867 56 tie 49.6 1995 w+ tie 92 49.7 1876 58 tie 49.7 1891 tie tie 49.7 1918 c+ tie tie 49.7 1954 c- tie tie 49.7 1957 w tie 87 49.8 1921 c+ 63 tie 49.8 1971 c+ tie tie 49.8 1981 w- tie 84 49.9 1897 w+ 66 tie 49.9 1903 c+ tie tie 49.9 1938 c tie tie 49.9 1979 tie tie 49.9 1996 tie 79 50.0 1865 71 tie 50.0 1916 tie tie 50.0 1968 c- tie 76 50.1 1961 74 tie 50.1 1998 w tie tie 50.1 2002 tie 73 50.2 1895 77 tie 50.2 1932 w- tie 71 50.3 1980 w+ 79 70 50.4 1872 80 tie 50.4 1894 tie tie 50.4 1907 w- tie 67 50.5 1978 w- 83 66 50.7 1956 c+ 84 65 50.8 1901 c 85 tie 50.8 1904 c+ tie 63 50.9 1924 w- 87 tie 50.9 1958 w- tie tie 50.9 1972 w+ tie tie 50.9 1973 tie 59 51.0 1873 91 tie 51.0 1937 c- tie tie 51.0 1989 c+ tie tie 51.0 1993 w+ tie 55 51.1 1890 95 tie 51.1 1946 w tie tie 51.1 1988 tie 52 51.2 1963 c 98 51 51.3 1874 99 tie 51.3 1905 w+ tie tie 51.3 1919 w+ tie tie 51.3 1941 w+ tie tie 51.3 1966 w+ tie tie 51.3 2009 tie 45 51.4 1969 w 105 44 51.5 1868 106 tie 51.5 1990 tie 42 51.6 1875 108 tie 51.6 2003 tie 40 51.7 2006 110 39 51.8 1878 111 tie 51.8 1931 c+ tie tie 51.8 1986 tie tie 51.8 2001 tie 35 51.9 1879 115 tie 51.9 1881 tie tie 51.9 1930 tie tie 51.9 2005 tie 31 52.2 1884 119 tie 52.2 1947 w- tie 29 52.3 1940 w+ 121 28 52.4 1887 122 tie 52.4 1936 c+ tie tie 52.4 1997 w tie 25 52.5 1885 125 tie 52.5 1915 w tie tie 52.5 2000 c+ tie 22 52.6 1928 c+ 128 21 52.7 1949 129 20 52.8 1914 w 130 19 53.0 1888 131 18 53.1 1877 132 tie 53.1 1900 w+ tie tie 53.1 1925 c+ tie 15 53.2 1994 w+ 135 14 53.3 1939 c 136 13 53.6 1926 w+ 137 tie 53.6 2004 tie 11 54.1 1987 w+ 139 10 54.2 1866 140 tie 54.2 2007 tie 8 54.7 1889 142 7 54.9 1910 c+ 143 6 55.1 1869 144 5 56.0 1992 w+ 145 4 57.9 1934 146 3 58.3 1906 w- 147 2 61.2 1870 148 1 8/8/2011 c = la nina w = el nino weak c- or w- moderate c or w strong c+ or w+ average spring temperatures at boise, all sites.txt