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 1905

View Period (Months):
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
May 1905
1-Month
1.61"
(40.89mm)
0.92"
(23.37mm)
0.69"
(17.52mm)
113th Driest
Driest since:
1924
16th Wettest
Wettest since:
1998
Apr–May 1905
2-Month
2.45"
(62.23mm)
2.26"
(57.40mm)
0.19"
(4.83mm)
83rd Driest
Driest since:
1909
46th Wettest
Wettest since:
1896
Mar–May 1905
3-Month
6.22"
(157.99mm)
4.59"
(116.59mm)
1.63"
(41.40mm)
104th Driest
Driest since:
2008
25th Wettest
Wettest since:
1995
Feb–May 1905
4-Month
9.13"
(231.90mm)
7.31"
(185.67mm)
1.82"
(46.23mm)
101st Driest
Driest since:
1997
28th Wettest
Wettest since:
1998
Jan–May 1905
5-Month
11.82"
(300.23mm)
10.29"
(261.37mm)
1.53"
(38.86mm)
96th Driest
Driest since:
2022
33rd Wettest
Wettest since:
1998
Dec 1904–May 1905
6-Month
14.01"
(355.85mm)
12.84"
(326.14mm)
1.17"
(29.71mm)
88th Driest
Driest since:
1924
40th Wettest
Wettest since:
1995
Nov 1904–May 1905
7-Month
14.79"
(375.67mm)
14.71"
(373.63mm)
0.08"
(2.04mm)
77th Driest
Driest since:
1977
51st Wettest
Wettest since:
1995
Ties: 1903
Oct 1904–May 1905
8-Month
16.64"
(422.66mm)
15.74"
(399.80mm)
0.90"
(22.86mm)
79th Driest
Driest since:
1977
49th Wettest
Wettest since:
1983
Sep 1904–May 1905
9-Month
17.93"
(455.42mm)
16.23"
(412.24mm)
1.70"
(43.18mm)
91st Driest
Driest since:
2021
37th Wettest
Wettest since:
1983
Aug 1904–May 1905
10-Month
18.76"
(476.50mm)
16.62"
(422.15mm)
2.14"
(54.35mm)
94th Driest
Driest since:
2021
34th Wettest
Wettest since:
1983
Jul 1904–May 1905
11-Month
19.18"
(487.17mm)
16.95"
(430.53mm)
2.23"
(56.64mm)
94th Driest
Driest since:
2021
34th Wettest
Wettest since:
1983
Jun 1904–May 1905
12-Month
19.28"
(489.71mm)
17.44"
(442.98mm)
1.84"
(46.73mm)
92nd Driest
Driest since:
2021
36th Wettest
Wettest since:
1983
Dec 1903–May 1905
18-Month
34.19"
(868.43mm)
30.25"
(768.35mm)
3.94"
(100.08mm)
100th Driest
Driest since:
1977
27th Wettest
Wettest since:
1983
Jun 1903–May 1905
24-Month
38.99"
(990.35mm)
34.89"
(886.21mm)
4.10"
(104.14mm)
103rd Driest
Driest since:
2022
24th Wettest
Wettest to Date
1983
Ties: 2018
Jun 1902–May 1905
36-Month
55.78"
(1,416.81mm)
52.30"
(1,328.42mm)
3.48"
(88.39mm)
88th Driest
Driest since:
2022
38th Wettest
Wettest to Date
1984
Jun 1901–May 1905
48-Month
73.12"
(1,857.25mm)
69.56"
(1,766.82mm)
3.56"
(90.43mm)
88th Driest
Driest since:
2015
37th Wettest
Wettest to Date
1998
Jun 1900–May 1905
60-Month
92.17"
(2,341.12mm)
86.83"
(2,205.48mm)
5.34"
(135.64mm)
91st Driest
Driest since:
1933
33rd Wettest
Wettest to Date
1999

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