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 2008

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 2008
1-Month
0.73"
(18.54mm)
0.92"
(23.37mm)
-0.19"
(-4.83mm)
59th Driest
Driest since:
1924
70th Wettest
Wettest since:
1998
Ties: 1902, 1931, 1967
Apr–May 2008
2-Month
1.02"
(25.91mm)
2.26"
(57.40mm)
-1.24"
(-31.49mm)
11th Driest
Driest since:
1909
118th Wettest
Wettest since:
1896
Mar–May 2008
3-Month
1.54"
(39.12mm)
4.59"
(116.59mm)
-3.05"
(-77.47mm)
1st Driest
Driest since:
2008
128th Wettest
Wettest since:
1995
Feb–May 2008
4-Month
3.61"
(91.69mm)
7.31"
(185.67mm)
-3.70"
(-93.98mm)
8th Driest
Driest since:
1997
121st Wettest
Wettest since:
1998
Jan–May 2008
5-Month
8.40"
(213.36mm)
10.29"
(261.37mm)
-1.89"
(-48.01mm)
46th Driest
Driest since:
2022
83rd Wettest
Wettest since:
1998
Dec 2007–May 2008
6-Month
10.85"
(275.59mm)
12.84"
(326.14mm)
-1.99"
(-50.55mm)
50th Driest
Driest since:
1924
78th Wettest
Wettest since:
1995
Nov 2007–May 2008
7-Month
11.47"
(291.34mm)
14.71"
(373.63mm)
-3.24"
(-82.29mm)
33rd Driest
Driest since:
1977
95th Wettest
Wettest since:
1995
Oct 2007–May 2008
8-Month
12.61"
(320.29mm)
15.74"
(399.80mm)
-3.13"
(-79.51mm)
40th Driest
Driest since:
1977
88th Wettest
Wettest since:
1983
Sep 2007–May 2008
9-Month
13.26"
(336.80mm)
16.23"
(412.24mm)
-2.97"
(-75.44mm)
43rd Driest
Driest since:
2021
85th Wettest
Wettest since:
1983
Aug 2007–May 2008
10-Month
13.57"
(344.68mm)
16.62"
(422.15mm)
-3.05"
(-77.47mm)
40th Driest
Driest since:
2021
88th Wettest
Wettest since:
1983
Jul 2007–May 2008
11-Month
13.84"
(351.54mm)
16.95"
(430.53mm)
-3.11"
(-78.99mm)
42nd Driest
Driest since:
2021
86th Wettest
Wettest since:
1983
Jun 2007–May 2008
12-Month
14.05"
(356.87mm)
17.44"
(442.98mm)
-3.39"
(-86.11mm)
37th Driest
Driest since:
2021
91st Wettest
Wettest since:
1983
Dec 2006–May 2008
18-Month
21.79"
(553.47mm)
30.25"
(768.35mm)
-8.46"
(-214.88mm)
10th Driest
Driest since:
1977
117th Wettest
Wettest since:
1983
Jun 2006–May 2008
24-Month
24.65"
(626.11mm)
34.89"
(886.21mm)
-10.24"
(-260.10mm)
6th Driest
Driest since:
2022
121st Wettest
Wettest since:
1983
Jun 2005–May 2008
36-Month
47.06"
(1,195.32mm)
52.30"
(1,328.42mm)
-5.24"
(-133.10mm)
38th Driest
Driest since:
2022
88th Wettest
Wettest since:
1984
Jun 2004–May 2008
48-Month
70.50"
(1,790.70mm)
69.56"
(1,766.82mm)
0.94"
(23.88mm)
77th Driest
Driest since:
2015
48th Wettest
Wettest since:
1998
Jun 2003–May 2008
60-Month
85.73"
(2,177.54mm)
86.83"
(2,205.48mm)
-1.10"
(-27.94mm)
69th Driest
Driest since:
1933
55th Wettest
Wettest since:
1999
Ties: 1967

Citing This Page