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 1906

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1906
1-Month
2.24"
(56.90mm)
0.92"
(23.37mm)
1.32"
(33.53mm)
124th Driest
Driest since:
1924
5th Wettest
Wettest to Date
1998
Apr–May 1906
2-Month
3.88"
(98.55mm)
2.26"
(57.40mm)
1.62"
(41.15mm)
115th Driest
Driest since:
1909
14th Wettest
Wettest since:
1896
Mar–May 1906
3-Month
9.28"
(235.71mm)
4.59"
(116.59mm)
4.69"
(119.12mm)
126th Driest
Driest since:
2008
3rd Wettest
Wettest to Date
1995
Feb–May 1906
4-Month
12.13"
(308.10mm)
7.31"
(185.67mm)
4.82"
(122.43mm)
121st Driest
Driest since:
1997
8th Wettest
Wettest since:
1998
Jan–May 1906
5-Month
16.71"
(424.43mm)
10.29"
(261.37mm)
6.42"
(163.06mm)
123rd Driest
Driest since:
2022
6th Wettest
Wettest to Date
1998
Dec 1905–May 1906
6-Month
17.89"
(454.41mm)
12.84"
(326.14mm)
5.05"
(128.27mm)
114th Driest
Driest since:
1924
14th Wettest
Wettest to Date
1995
Nov 1905–May 1906
7-Month
19.66"
(499.36mm)
14.71"
(373.63mm)
4.95"
(125.73mm)
112th Driest
Driest since:
1977
16th Wettest
Wettest to Date
1995
Oct 1905–May 1906
8-Month
19.81"
(503.17mm)
15.74"
(399.80mm)
4.07"
(103.37mm)
108th Driest
Driest since:
1977
20th Wettest
Wettest to Date
1983
Sep 1905–May 1906
9-Month
20.32"
(516.13mm)
16.23"
(412.24mm)
4.09"
(103.89mm)
107th Driest
Driest since:
2021
21st Wettest
Wettest to Date
1983
Aug 1905–May 1906
10-Month
20.63"
(524.00mm)
16.62"
(422.15mm)
4.01"
(101.85mm)
107th Driest
Driest since:
2021
21st Wettest
Wettest to Date
1983
Jul 1905–May 1906
11-Month
20.67"
(525.02mm)
16.95"
(430.53mm)
3.72"
(94.49mm)
105th Driest
Driest since:
2021
23rd Wettest
Wettest to Date
1983
Jun 1905–May 1906
12-Month
20.81"
(528.57mm)
17.44"
(442.98mm)
3.37"
(85.59mm)
105th Driest
Driest since:
2021
23rd Wettest
Wettest to Date
1983
Dec 1904–May 1906
18-Month
34.82"
(884.43mm)
30.25"
(768.35mm)
4.57"
(116.08mm)
104th Driest
Driest since:
1977
23rd Wettest
Wettest to Date
1983
Jun 1904–May 1906
24-Month
40.09"
(1,018.29mm)
34.89"
(886.21mm)
5.20"
(132.08mm)
108th Driest
Driest since:
2022
19th Wettest
Wettest to Date
1983
Jun 1903–May 1906
36-Month
59.80"
(1,518.92mm)
52.30"
(1,328.42mm)
7.50"
(190.50mm)
105th Driest
Driest since:
2022
21st Wettest
Wettest to Date
1984
Jun 1902–May 1906
48-Month
76.59"
(1,945.39mm)
69.56"
(1,766.82mm)
7.03"
(178.57mm)
100th Driest
Driest since:
2015
25th Wettest
Wettest to Date
1998
Jun 1901–May 1906
60-Month
93.93"
(2,385.82mm)
86.83"
(2,205.48mm)
7.10"
(180.34mm)
99th Driest
Driest since:
1933
25th Wettest
Wettest to Date
1999

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