West Climate Region, Precipitation Rankings, May 1931 1901-2000 Inches 1 0.73 0.92 -0.19 59 70 1924 1998 1929 1930 normal 1902,1967,2008 2 1.83 2.26 -0.43 52 77 1909 1896 1929 1930 normal 3 2.85 4.59 -1.74 22 107 2008 1995 1924 1930 bottom-third 4 4.67 7.31 -2.64 22 107 1997 1998 1929 1930 bottom-third 5 6.96 10.29 -3.33 25 104 2022 1998 1929 1930 bottom-third 6 7.32 12.84 -5.52 7 121 1924 1995 1924 1930 bottom-tenth 7 8.97 14.71 -5.74 7 121 1977 1995 1924 1930 bottom-tenth 8 9.55 15.74 -6.19 5 123 1977 1983 1924 1930 bottom-tenth 9 10.22 16.23 -6.01 6 122 2021 1983 1924 1930 bottom-tenth 10 10.71 16.62 -5.91 7 121 2021 1983 1929 1930 bottom-tenth 11 10.84 16.95 -6.11 6 122 2021 1983 1929 1930 bottom-tenth 12 10.96 17.44 -6.48 6 122 2021 1983 1929 1930 bottom-tenth 18 24.01 30.25 -6.24 23 104 1977 1983 1930 1928 bottom-third 24 26.04 34.89 -8.85 12 115 2022 1983 1930 1928 bottom-tenth 36 36.80 52.30 -15.50 3 123 2022 1984 1931 1930 bottom-tenth 48 52.04 69.56 -17.52 2 123 2015 1998 1931 1930 bottom-tenth 60 71.84 86.83 -14.99 8 116 1933 1999 1931 1930 bottom-tenth