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, April 2022

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 2022
1-Month
1.24"
(31.50mm)
1.33"
(33.78mm)
-0.09"
(-2.28mm)
68th Driest
Driest since:
1909
61st Wettest
Wettest since:
1935
Ties: 1930, 1969
Mar–Apr 2022
2-Month
2.12"
(53.85mm)
3.67"
(93.22mm)
-1.55"
(-39.37mm)
18th Driest
Driest since:
2008
111th Wettest
Wettest since:
1983
Ties: 1931
Feb–Apr 2022
3-Month
2.35"
(59.69mm)
6.39"
(162.31mm)
-4.04"
(-102.62mm)
4th Driest
Driest since:
1997
125th Wettest
Wettest since:
1983
Jan–Apr 2022
4-Month
2.68"
(68.07mm)
9.37"
(238.00mm)
-6.69"
(-169.93mm)
1st Driest
Driest since:
2022
128th Wettest
Wettest since:
1995
Dec 2021–Apr 2022
5-Month
7.23"
(183.64mm)
11.92"
(302.77mm)
-4.69"
(-119.13mm)
12th Driest
Driest since:
1977
116th Wettest
Wettest since:
1978
Nov 2021–Apr 2022
6-Month
7.86"
(199.64mm)
13.79"
(350.27mm)
-5.93"
(-150.63mm)
6th Driest
Driest since:
1977
122nd Wettest
Wettest since:
1983
Oct 2021–Apr 2022
7-Month
10.84"
(275.34mm)
14.82"
(376.43mm)
-3.98"
(-101.09mm)
25th Driest
Driest since:
1977
103rd Wettest
Wettest since:
1983
Sep 2021–Apr 2022
8-Month
11.16"
(283.46mm)
15.31"
(388.87mm)
-4.15"
(-105.41mm)
21st Driest
Driest since:
1977
107th Wettest
Wettest since:
1983
Aug 2021–Apr 2022
9-Month
11.32"
(287.53mm)
15.70"
(398.78mm)
-4.38"
(-111.25mm)
19th Driest
Driest since:
1977
109th Wettest
Wettest since:
1983
Jul 2021–Apr 2022
10-Month
11.84"
(300.74mm)
16.03"
(407.16mm)
-4.19"
(-106.42mm)
23rd Driest
Driest since:
2021
105th Wettest
Wettest since:
1983
Jun 2021–Apr 2022
11-Month
12.00"
(304.80mm)
16.52"
(419.61mm)
-4.52"
(-114.81mm)
19th Driest
Driest since:
2021
109th Wettest
Wettest since:
1983
May 2021–Apr 2022
12-Month
12.34"
(313.44mm)
17.44"
(442.98mm)
-5.10"
(-129.54mm)
14th Driest
Driest since:
1977
114th Wettest
Wettest since:
1983
Nov 2020–Apr 2022
18-Month
20.09"
(510.29mm)
31.22"
(792.99mm)
-11.13"
(-282.70mm)
3rd Driest
Driest since:
1977
124th Wettest
Wettest since:
1983
May 2020–Apr 2022
24-Month
21.66"
(550.16mm)
34.90"
(886.46mm)
-13.24"
(-336.30mm)
2nd Driest
Driest since:
1977
125th Wettest
Wettest since:
1983
May 2019–Apr 2022
36-Month
35.96"
(913.38mm)
52.30"
(1,328.42mm)
-16.34"
(-415.04mm)
1st Driest
Driest since:
2022
125th Wettest
Wettest since:
1984
May 2018–Apr 2022
48-Month
56.40"
(1,432.56mm)
69.56"
(1,766.82mm)
-13.16"
(-334.26mm)
11th Driest
Driest since:
2015
114th Wettest
Wettest since:
1998
May 2017–Apr 2022
60-Month
69.41"
(1,763.01mm)
86.83"
(2,205.48mm)
-17.42"
(-442.47mm)
4th Driest
Driest since:
1933
120th Wettest
Wettest since:
1999

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