Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

West Climate Region

Precipitation Rankings, May 1930

View Period (Months):
Download: csv json xml
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1930
1-Month
1.68"
(42.67mm)
0.92"
(23.37mm)
0.76"
(19.30mm)
114th Driest
Driest since:
1924
15th Wettest
Wettest since:
1998
Apr–May 1930
2-Month
2.92"
(74.17mm)
2.26"
(57.40mm)
0.66"
(16.77mm)
96th Driest
Driest since:
1909
33rd Wettest
Wettest since:
1896
Mar–May 1930
3-Month
4.80"
(121.92mm)
4.59"
(116.59mm)
0.21"
(5.33mm)
75th Driest
Driest since:
2008
54th Wettest
Wettest since:
1995
Feb–May 1930
4-Month
6.87"
(174.50mm)
7.31"
(185.67mm)
-0.44"
(-11.17mm)
65th Driest
Driest since:
1997
64th Wettest
Wettest since:
1998
Jan–May 1930
5-Month
10.23"
(259.84mm)
10.29"
(261.37mm)
-0.06"
(-1.53mm)
77th Driest
Driest since:
2022
52nd Wettest
Wettest since:
1998
Dec 1929–May 1930
6-Month
13.05"
(331.47mm)
12.84"
(326.14mm)
0.21"
(5.33mm)
78th Driest
Driest since:
1924
50th Wettest
Wettest since:
1995
Nov 1929–May 1930
7-Month
13.06"
(331.72mm)
14.71"
(373.63mm)
-1.65"
(-41.91mm)
58th Driest
Driest since:
1977
70th Wettest
Wettest since:
1995
Ties: 1900
Oct 1929–May 1930
8-Month
13.20"
(335.28mm)
15.74"
(399.80mm)
-2.54"
(-64.52mm)
49th Driest
Driest since:
1977
79th Wettest
Wettest since:
1983
Sep 1929–May 1930
9-Month
13.51"
(343.15mm)
16.23"
(412.24mm)
-2.72"
(-69.09mm)
46th Driest
Driest since:
2021
82nd Wettest
Wettest since:
1983
Ties: 1949
Aug 1929–May 1930
10-Month
14.07"
(357.38mm)
16.62"
(422.15mm)
-2.55"
(-64.77mm)
49th Driest
Driest since:
2021
79th Wettest
Wettest since:
1983
Jul 1929–May 1930
11-Month
14.17"
(359.92mm)
16.95"
(430.53mm)
-2.78"
(-70.61mm)
45th Driest
Driest since:
2021
83rd Wettest
Wettest since:
1983
Jun 1929–May 1930
12-Month
15.08"
(383.03mm)
17.44"
(442.98mm)
-2.36"
(-59.95mm)
48th Driest
Driest since:
2021
80th Wettest
Wettest since:
1983
Dec 1928–May 1930
18-Month
22.91"
(581.91mm)
30.25"
(768.35mm)
-7.34"
(-186.44mm)
17th Driest
Driest since:
1977
110th Wettest
Wettest since:
1983
Jun 1928–May 1930
24-Month
25.84"
(656.34mm)
34.89"
(886.21mm)
-9.05"
(-229.87mm)
10th Driest
Driest since:
2022
117th Wettest
Wettest since:
1983
Jun 1927–May 1930
36-Month
41.08"
(1,043.43mm)
52.30"
(1,328.42mm)
-11.22"
(-284.99mm)
8th Driest
Driest since:
2022
118th Wettest
Wettest since:
1984
Jun 1926–May 1930
48-Month
60.88"
(1,546.35mm)
69.56"
(1,766.82mm)
-8.68"
(-220.47mm)
26th Driest
Driest since:
2015
99th Wettest
Wettest since:
1998
Jun 1925–May 1930
60-Month
76.89"
(1,953.01mm)
86.83"
(2,205.48mm)
-9.94"
(-252.47mm)
21st Driest
Driest since:
1933
103rd Wettest
Wettest since:
1999

Citing This Page