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 1927

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1927
1-Month
0.66"
(16.76mm)
0.92"
(23.37mm)
-0.26"
(-6.61mm)
53rd Driest
Driest since:
1924
76th Wettest
Wettest since:
1998
Ties: 1968
Apr–May 1927
2-Month
2.16"
(54.86mm)
2.26"
(57.40mm)
-0.10"
(-2.54mm)
66th Driest
Driest since:
1909
63rd Wettest
Wettest since:
1896
Mar–May 1927
3-Month
3.99"
(101.35mm)
4.59"
(116.59mm)
-0.60"
(-15.24mm)
61st Driest
Driest since:
2008
68th Wettest
Wettest since:
1995
Feb–May 1927
4-Month
9.21"
(233.93mm)
7.31"
(185.67mm)
1.90"
(48.26mm)
104th Driest
Driest since:
1997
25th Wettest
Wettest since:
1998
Ties: 1962
Jan–May 1927
5-Month
11.34"
(288.04mm)
10.29"
(261.37mm)
1.05"
(26.67mm)
87th Driest
Driest since:
2022
42nd Wettest
Wettest since:
1998
Dec 1926–May 1927
6-Month
13.24"
(336.30mm)
12.84"
(326.14mm)
0.40"
(10.16mm)
80th Driest
Driest since:
1924
48th Wettest
Wettest since:
1995
Nov 1926–May 1927
7-Month
18.09"
(459.49mm)
14.71"
(373.63mm)
3.38"
(85.86mm)
103rd Driest
Driest since:
1977
25th Wettest
Wettest since:
1995
Oct 1926–May 1927
8-Month
18.93"
(480.82mm)
15.74"
(399.80mm)
3.19"
(81.02mm)
103rd Driest
Driest since:
1977
25th Wettest
Wettest since:
1983
Sep 1926–May 1927
9-Month
19.03"
(483.36mm)
16.23"
(412.24mm)
2.80"
(71.12mm)
97th Driest
Driest since:
2021
31st Wettest
Wettest since:
1983
Aug 1926–May 1927
10-Month
19.34"
(491.24mm)
16.62"
(422.15mm)
2.72"
(69.09mm)
98th Driest
Driest since:
2021
30th Wettest
Wettest since:
1983
Jul 1926–May 1927
11-Month
19.64"
(498.86mm)
16.95"
(430.53mm)
2.69"
(68.33mm)
98th Driest
Driest since:
2021
30th Wettest
Wettest since:
1983
Jun 1926–May 1927
12-Month
19.80"
(502.92mm)
17.44"
(442.98mm)
2.36"
(59.94mm)
97th Driest
Driest since:
2021
31st Wettest
Wettest since:
1983
Dec 1925–May 1927
18-Month
30.32"
(770.13mm)
30.25"
(768.35mm)
0.07"
(1.78mm)
72nd Driest
Driest since:
1977
55th Wettest
Wettest since:
1983
Jun 1925–May 1927
24-Month
35.81"
(909.57mm)
34.89"
(886.21mm)
0.92"
(23.36mm)
75th Driest
Driest since:
2022
52nd Wettest
Wettest since:
1983
Jun 1924–May 1927
36-Month
52.66"
(1,337.56mm)
52.30"
(1,328.42mm)
0.36"
(9.14mm)
72nd Driest
Driest since:
2022
54th Wettest
Wettest since:
1984
Jun 1923–May 1927
48-Month
63.18"
(1,604.77mm)
69.56"
(1,766.82mm)
-6.38"
(-162.05mm)
36th Driest
Driest since:
2015
89th Wettest
Wettest since:
1998
Jun 1922–May 1927
60-Month
78.48"
(1,993.39mm)
86.83"
(2,205.48mm)
-8.35"
(-212.09mm)
30th Driest
Driest since:
1933
94th Wettest
Wettest since:
1999

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