Average Temperatures for April at Boise, Idaho for the 159-year period 1875 through 2022 normal (1991-2020) = 50.7 F degrees RANK RANK AMONG AMONG DATA YEAR COLDEST WARMEST 39.6 1864 1 159 43.8 1970 2 158 43.9 1967 3 157 44.0 1955 c- 4 156 44.2 1883 5 155 44.5 1975 c+ 6 154 45.0 1922 7 153 45.2 1982 w- 8 152 45.3 1964 c 9 151 45.4 1896 w 10 tie 45.4 1920 tie 149 45.9 1984 12 148 46.0 1872 13 tie 46.0 1945 c- tie 146 46.1 1892 15 tie 46.1 1953 w+ tie 144 46.2 1909 w 17 tie 46.2 2011 c- tie 142 46.3 1968 c- 19 141 46.4 1893 20 tie 46.4 1917 c+ tie 139 46.5 1871 22 138 46.6 2008 c+ 23 137 46.7 1972 w+ 24 tie 46.7 2022 c tie 135 46.8 1929 26 134 47.0 1865 27 tie 47.0 1921 c+ tie 132 47.1 1983 w+ 29 131 47.3 1976 c 30 130 47.4 1911 31 129 47.5 1886 32 tie 47.5 1999 c+ tie 127 47.6 1882 34 tie 47.6 1950 c+ tie 125 47.8 1958 w- 36 124 47.9 1928 c+ 37 123 48.0 1948 38 122 48.1 1961 39 tie 48.1 1993 w+ tie tie 48.1 2001 tie 119 48.2 1901 c 42 tie 48.2 1912 w+ tie tie 48.2 1937 c- tie tie 48.2 1995 w+ tie 115 48.3 1963 c 46 tie 48.3 1986 tie tie 48.3 1991 w+ tie 112 48.4 1880 49 tie 48.4 1899 c- tie tie 48.4 1927 c+ tie 109 48.5 1978 w- 52 108 48.6 1933 c- 53 107 48.7 1957 w 54 tie 48.7 1979 tie 105 48.8 1918 c+ 56 tie 48.8 1935 c- tie tie 48.8 2010 w tie 102 48.9 1944 59 tie 48.9 1997 w tie 100 49.0 1903 c+ 61 tie 49.0 1960 c tie 98 49.1 1973 63 97 49.2 1966 w+ 64 tie 49.2 1971 c+ tie 95 49.3 1887 66 94 49.4 1923 c 67 tie 49.4 1947 w- tie tie 49.4 2003 w- tie tie 49.4 2017 tie 90 49.7 1873 71 tie 49.7 1974 c+ tie 88 49.8 1907 w- 73 tie 49.8 1924 w- tie 86 49.9 1954 c- 75 tie 49.9 1998 w tie tie 49.9 2013 tie 83 50.0 1897 w+ 78 tie 50.0 1902 c+ tie tie 50.0 1940 w+ tie tie 50.0 1996 tie 79 50.1 1874 82 tie 50.1 1878 tie tie 50.1 1941 w+ tie 76 50.2 1965 w 85 75 50.3 1981 w- 86 74 50.4 2002 87 73 50.5 1969 w 88 tie 50.5 2005 tie tie 50.5 2014 tie 70 50.6 1876 91 tie 50.6 1913 w tie tie 50.6 1931 c+ tie tie 50.6 1956 c+ tie tie 50.6 2009 c- tie 65 50.7 1951 w 96 tie 50.7 1959 c tie 63 51.0 1894 98 tie 51.0 1900 w+ tie 61 51.1 2015 W- 100 60 51.2 1914 w 101 59 51.3 1877 102 58 51.4 1916 103 tie 51.4 1932 w- tie 56 51.6 1891 105 tie 51.6 1985 c tie 54 51.7 2006 c- 107 tie 51.7 2007 w- tie 52 51.8 1905 w+ 109 tie 51.8 1908 c- tie tie 51.8 1919 w+ tie tie 51.8 1938 c tie tie 51.8 1942 w- tie tie 51.8 1946 w tie tie 51.8 2021 c- tie 45 52.0 1884 116 tie 52.0 1890 tie 43 52.2 1895 118 tie 52.2 1904 c+ tie tie 52.2 1906 w- tie tie 52.2 2020 tie 39 52.4 1962 c- 122 tie 52.4 2018 tie 37 52.5 1952 124 36 52.6 1980 w+ 125 tie 52.6 1994 w+ tie 34 52.7 1885 127 tie 52.7 1925 c+ tie tie 52.7 1988 tie 31 53.0 1881 130 tie 53.0 1898 c+ tie tie 53.0 2019 w tie 28 53.1 1868 133 tie 53.1 1989 c+ tie 26 53.2 1869 135 25 53.4 1866 136 tie 53.4 1949 tie 23 53.6 1939 c 138 22 53.8 1879 139 tie 53.8 2004 tie 20 54.0 1943 c+ 141 19 54.1 1936 c+ 142 tie 54.1 1977 w+ tie 17 54.3 1870 144 tie 54.3 2000 c+ tie 15 54.6 1990 146 14 54.7 2012 147 13 54.9 1992 w+ 148 12 55.0 1889 149 11 55.1 1867 150 10 55.3 1915 w 151 9 55.5 1875 152 8 55.6 1930 153 7 55.9 1910 c+ 154 6 56.0 1987 w+ 155 5 56.5 1888 156 tie 56.5 2016 w tie 3 56.6 1926 w+ 158 2 57.6 1934 159 1 5/1/2022 c = la nina w = el nino weak c- or w- moderate c or w strong c+ or w+ very strong c++ or w++ average april temperatures at boise, all sites.txt