Monthly Precipitation Totals for April Boise, Idaho for the 159-year period 1864 through 2022 normal (1981-10) = 1.23 inch Rank Rank Among Among Data Year Driest Wettest 0.09 1885 1 tie 0.09 1949 tie 158 0.12 1888 3 157 0.14 1877 4 156 0.15 1868 5 tie 0.15 1909 w tie tie 0.19 1959 c 7 tie 0.19 1977 w+ tie 152 0.22 1961 9 151 0.26 2008 c+ 10 150 0.28 1908 c- 11 149 0.35 1946 w 12 tie 0.35 1968 c- tie 147 0.36 1939 c 14 tie 0.36 2004 tie 145 0.38 1987 w+ 16 144 0.40 1971 c+ 17 143 0.42 1954 c- 18 142 0.43 1960 c 19 141 0.44 1891 20 140 0.46 1878 21 tie 0.46 1934 tie tie 0.46 1989 c+ tie 137 0.47 1945 c- 24 136 0.48 1890 25 135 0.52 1875 26 tie 0.52 1947 w- tie 133 0.54 1924 w- 28 132 0.55 1950 c+ 29 131 0.59 1895 30 130 0.60 2015 w- 31 129 0.61 1883 32 tie 0.61 1966 w+ tie tie 0.61 1999 c+ tie 126 0.62 1972 w+ 35 125 0.64 1927 c+ 36 124 0.65 1866 37 tie 0.65 1918 c+ tie 122 0.66 1864 39 tie 0.66 1992 w+ tie 120 0.67 1974 c+ 41 119 0.69 1903 c+ 42 tie 0.69 2016 w tie 117 0.70 1898 c+ 44 tie 0.70 1936 c+ tie 115 0.72 2009 c- 46 114 0.74 1933 c- 47 113 0.77 1902 c+ 48 112 0.78 1884 49 tie 0.78 1931 c+ tie 110 0.79 1928 c+ 51 tie 0.79 1982 w- tie 108 0.80 1916 53 107 0.81 1998 w 54 106 0.83 2002 55 105 0.84 1872 56 104 0.87 1925 57 103 0.88 1905 w+ 58 102 0.90 1985 c 59 101 0.92 1962 c- 60 100 0.93 1921 c+ 61 tie 0.93 1970 tie 98 0.94 1951 w 63 97 0.95 1913 w 64 tie 0.95 2013 tie 95 0.96 2021 c- 66 94 0.99 1865 67 tie 0.99 2018 tie 92 1.01 2000 c+ 69 91 1.02 1907 w- 70 90 1.03 1995 w+ 71 89 1.05 1915 w 72 88 1.06 2007 w- 73 87 1.08 1952 74 86 1.09 1923 c 75 tie 1.09 1926 w+ tie tie 1.09 1938 c tie 83 1.10 1897 w+ 78 tie 1.10 1910 c+ tie 81 1.12 1901 c 80 tie 1.12 2020 tie 79 1.15 1957 w 82 tie 1.15 2022 c tie 77 1.16 2005 84 76 1.18 1919 w+ 85 75 1.20 1980 w+ 86 tie 1.20 2001 tie 73 1.24 1876 88 72 1.25 1892 89 tie 1.25 1994 w+ tie 70 1.26 1894 91 69 1.28 1929 92 tie 1.28 1942 w- tie 67 1.30 1874 94 66 1.32 1904 c+ 95 tie 1.32 1920 tie 64 1.34 1881 97 63 1.35 1941 w+ 98 tie 1.35 1964 c tie tie 1.35 1969 w tie 60 1.37 1948 101 59 1.39 1943 c+ 102 tie 1.39 2003 w- tie 57 1.40 1906 w- 104 56 1.42 1879 105 55 1.47 1967 106 tie 1.47 1996 tie 53 1.49 1973 108 52 1.50 1880 109 tie 1.50 1899 c- tie tie 1.50 1937 c- tie 49 1.51 1922 112 48 1.52 1953 w+ 113 47 1.53 1873 114 tie 1.53 1975 c+ tie tie 1.53 2011 c- tie 44 1.54 1871 117 tie 1.54 1887 tie 42 1.55 1986 119 41 1.58 2010 w 120 40 1.59 1911 121 39 1.60 1976 c 122 tie 1.60 1979 tie 37 1.62 1956 c+ 124 tie 1.62 1984 tie 35 1.63 1914 w 126 34 1.65 1963 c 127 tie 1.65 1991 w+ tie 32 1.67 1870 129 31 1.72 1889 130 30 1.75 1932 w- 131 29 1.80 1940 w+ 132 tie 1.80 1988 tie 27 1.82 2006 c- 134 26 1.86 1893 135 25 1.89 1997 w 136 24 1.93 1981 w- 137 23 1.94 1958 w- 138 22 1.96 1900 w+ 139 21 1.99 2019 w 140 20 2.01 2017 141 19 2.04 1930 142 18 2.08 2012 143 17 2.09 1993 w+ 144 16 2.14 1990 145 15 2.15 2014 146 14 2.29 1983 w+ 147 13 2.33 1882 148 12 2.34 1978 w- 149 11 2.43 1886 150 10 2.72 1896 w 151 9 2.75 1867 152 8 2.81 1965 w 153 7 2.88 1935 c- 154 6 2.92 1944 155 5 3.04 1955 c- 156 4 3.13 1917 c+ 157 3 3.34 1912 w+ 158 2 4.73 1869 159 1 5/1/2022 c = la nina w = el nino weak c- or w- moderate c or w strong c+ or w+ precip boise monthly rank allsites apr.txt