West Climate Region, Precipitation Rankings, May 2006 1901-2000 Inches 1 0.65 0.92 -0.27 51 78 1924 1998 2004 2005 normal 2013 2 3.82 2.26 1.56 114 15 1909 1896 2004 2005 top-third 3 7.72 4.59 3.13 120 9 2008 1995 2005 1998 top-tenth 4 9.63 7.31 2.32 109 20 1997 1998 2005 1998 top-third 5 12.90 10.29 2.61 103 26 2022 1998 2004 2005 top-third 6 18.25 12.84 5.41 115 13 1924 1995 2005 1998 top-tenth 7 19.88 14.71 5.17 113 15 1977 1995 2005 1998 top-third 8 20.83 15.74 5.09 111 17 1977 1983 2004 2005 top-third 9 21.17 16.23 4.94 112 16 2021 1983 2004 2005 top-third 10 21.58 16.62 4.96 112 16 2021 1983 2004 2005 top-third 11 21.81 16.95 4.86 110 18 2021 1983 2004 2005 top-third 12 22.41 17.44 4.97 112 16 2021 1983 2004 2005 top-third 18 39.95 30.25 9.70 117 10 1977 1983 2005 1999 top-tenth 24 45.85 34.89 10.96 120 7 2022 1983 2005 1999 top-tenth 36 61.08 52.30 8.78 112 14 2022 1984 2005 2000 top-third 48 78.57 69.56 9.01 105 20 2015 1998 2005 2000 top-third 60 92.21 86.83 5.38 92 32 1933 1999 2005 2001 top-third