Northwest May 1921 Precipitation Rankings
1901-2000
Inches
1
2.66
2.14
0.52
95
35
1924
1998
1920
1915
top-third
2
5.37
4.50
0.87
97
33
1924
1996
1920
1917
top-third
3
8.52
7.76
0.76
85
45
1924
2011
1920
1917
normal
4
12.85
11.37
1.48
96
34
1924
1904
1920
1917
top-third
5
18.60
15.90
2.70
108
22
1924
1904
1920
1916
top-third
6
24.47
20.54
3.93
109
20
1977
1997
1920
1916
top-third
7
28.72
24.89
3.83
105
24
1977
1974
1920
1916
top-third
8
32.54
27.45
5.09
114
15
1977
1974
1920
1916
top-third
9
35.60
28.87
6.73
119
10
1977
1974
1920
1904
top-tenth
10
36.94
29.68
7.26
123
6
1977
1974
1920
1921
top-tenth
11
37.65
30.40
7.25
122
7
1977
1974
1920
1921
top-tenth
12
39.30
32.13
7.17
119
10
1977
1996
1920
1904
top-tenth
18
54.91
52.65
2.26
94
34
1930
1997
1920
1917
top-third
24
63.97
64.28
-0.31
64
64
1930
1997
1920
1917
normal
36
95.67
96.36
-0.69
61
66
1931
1998
1920
1918
normal
48
125.45
128.40
-2.95
48
78
1931
1999
1920
1919
normal
60
156.00
160.37
-4.37
45
80
1933
1999
1920
1919
normal