West Climate Region, Precipitation Rankings, May 2009 1901-2000 Inches 1 0.98 0.92 0.06 81 48 1924 1998 2008 2005 normal 2 1.75 2.26 -0.51 48 81 1909 1896 2008 2006 normal 1986 3 3.35 4.59 -1.24 32 97 2008 1995 2008 2006 bottom-third 4 6.55 7.31 -0.76 58 71 1997 1998 2008 2006 normal 5 7.65 10.29 -2.64 34 95 2022 1998 2007 2008 bottom-third 6 9.91 12.84 -2.93 34 94 1924 1995 2007 2008 bottom-third 7 11.79 14.71 -2.92 39 89 1977 1995 2008 2006 bottom-third 8 12.35 15.74 -3.39 36 92 1977 1983 2007 2008 bottom-third 9 12.43 16.23 -3.80 27 101 2021 1983 2007 2008 bottom-third 10 12.57 16.62 -4.05 27 101 2021 1983 2007 2008 bottom-third 11 12.79 16.95 -4.16 24 104 2021 1983 2007 2008 bottom-third 12 12.91 17.44 -4.53 20 108 2021 1983 2007 2008 bottom-third 1950 18 23.76 30.25 -6.49 20 107 1977 1983 2008 2007 bottom-third 24 26.96 34.89 -7.93 17 110 2022 1983 2008 2007 bottom-third 36 37.56 52.30 -14.74 4 122 2022 1984 1931 2008 bottom-tenth 48 59.97 69.56 -9.59 21 104 2015 1998 2004 2008 bottom-third 60 83.41 86.83 -3.42 59 65 1933 1999 2005 2008 normal