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 1933

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1933
1-Month
1.38"
(35.05mm)
0.92"
(23.37mm)
0.46"
(11.68mm)
100th Driest
Driest since:
1924
29th Wettest
Wettest since:
1998
Apr–May 1933
2-Month
2.01"
(51.05mm)
2.26"
(57.40mm)
-0.25"
(-6.35mm)
61st Driest
Driest since:
1909
68th Wettest
Wettest since:
1896
Mar–May 1933
3-Month
3.70"
(93.98mm)
4.59"
(116.59mm)
-0.89"
(-22.61mm)
49th Driest
Driest since:
2008
80th Wettest
Wettest since:
1995
Feb–May 1933
4-Month
4.34"
(110.24mm)
7.31"
(185.67mm)
-2.97"
(-75.43mm)
19th Driest
Driest since:
1997
110th Wettest
Wettest since:
1998
Ties: 1929
Jan–May 1933
5-Month
8.50"
(215.90mm)
10.29"
(261.37mm)
-1.79"
(-45.47mm)
48th Driest
Driest since:
2022
81st Wettest
Wettest since:
1998
Ties: 1990
Dec 1932–May 1933
6-Month
10.42"
(264.67mm)
12.84"
(326.14mm)
-2.42"
(-61.47mm)
40th Driest
Driest since:
1924
88th Wettest
Wettest since:
1995
Nov 1932–May 1933
7-Month
11.12"
(282.45mm)
14.71"
(373.63mm)
-3.59"
(-91.18mm)
26th Driest
Driest since:
1977
102nd Wettest
Wettest since:
1995
Oct 1932–May 1933
8-Month
11.46"
(291.08mm)
15.74"
(399.80mm)
-4.28"
(-108.72mm)
20th Driest
Driest since:
1977
108th Wettest
Wettest since:
1983
Sep 1932–May 1933
9-Month
11.68"
(296.67mm)
16.23"
(412.24mm)
-4.55"
(-115.57mm)
16th Driest
Driest since:
2021
112th Wettest
Wettest since:
1983
Aug 1932–May 1933
10-Month
11.86"
(301.24mm)
16.62"
(422.15mm)
-4.76"
(-120.91mm)
16th Driest
Driest since:
2021
112th Wettest
Wettest since:
1983
Jul 1932–May 1933
11-Month
12.14"
(308.36mm)
16.95"
(430.53mm)
-4.81"
(-122.17mm)
14th Driest
Driest since:
2021
114th Wettest
Wettest since:
1983
Jun 1932–May 1933
12-Month
12.72"
(323.09mm)
17.44"
(442.98mm)
-4.72"
(-119.89mm)
14th Driest
Driest since:
2021
114th Wettest
Wettest since:
1983
Ties: 2012
Dec 1931–May 1933
18-Month
26.42"
(671.07mm)
30.25"
(768.35mm)
-3.83"
(-97.28mm)
39th Driest
Driest since:
1977
88th Wettest
Wettest since:
1983
Jun 1931–May 1933
24-Month
31.56"
(801.62mm)
34.89"
(886.21mm)
-3.33"
(-84.59mm)
43rd Driest
Driest since:
2022
84th Wettest
Wettest since:
1983
Jun 1930–May 1933
36-Month
42.52"
(1,080.01mm)
52.30"
(1,328.42mm)
-9.78"
(-248.41mm)
15th Driest
Driest since:
2022
111th Wettest
Wettest since:
1984
Jun 1929–May 1933
48-Month
57.60"
(1,463.04mm)
69.56"
(1,766.82mm)
-11.96"
(-303.78mm)
14th Driest
Driest since:
2015
111th Wettest
Wettest since:
1998
Jun 1928–May 1933
60-Month
68.36"
(1,736.34mm)
86.83"
(2,205.48mm)
-18.47"
(-469.14mm)
1st Driest
Driest since:
1933
123rd Wettest
Wettest since:
1999

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