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, March 2021

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
March 2021
1-Month
1.39"
(35.31mm)
2.33"
(59.18mm)
-0.94"
(-23.87mm)
38th Driest
Driest since:
1956
91st Wettest
Wettest since:
1995
Feb–Mar 2021
2-Month
2.55"
(64.77mm)
5.05"
(128.27mm)
-2.50"
(-63.50mm)
18th Driest
Driest since:
1923
111th Wettest
Wettest since:
1938
Jan–Mar 2021
3-Month
5.09"
(129.29mm)
8.03"
(203.96mm)
-2.94"
(-74.67mm)
27th Driest
Driest since:
2022
102nd Wettest
Wettest since:
1995
Dec 2020–Mar 2021
4-Month
6.41"
(162.81mm)
10.58"
(268.73mm)
-4.17"
(-105.92mm)
14th Driest
Driest since:
1977
114th Wettest
Wettest since:
1907
Nov 2020–Mar 2021
5-Month
7.41"
(188.21mm)
12.46"
(316.48mm)
-5.05"
(-128.27mm)
9th Driest
Driest since:
1977
119th Wettest
Wettest since:
1983
Ties: 1898
Oct 2020–Mar 2021
6-Month
7.46"
(189.48mm)
13.48"
(342.39mm)
-6.02"
(-152.91mm)
3rd Driest
Driest since:
1977
125th Wettest
Wettest since:
1983
Sep 2020–Mar 2021
7-Month
7.51"
(190.75mm)
13.98"
(355.09mm)
-6.47"
(-164.34mm)
2nd Driest
Driest since:
1977
126th Wettest
Wettest since:
1983
Aug 2020–Mar 2021
8-Month
7.62"
(193.55mm)
14.37"
(365.00mm)
-6.75"
(-171.45mm)
2nd Driest
Driest since:
1977
126th Wettest
Wettest since:
1983
Jul 2020–Mar 2021
9-Month
7.69"
(195.33mm)
14.69"
(373.13mm)
-7.00"
(-177.80mm)
1st Driest
Driest since:
2021
127th Wettest
Wettest since:
1983
Jun 2020–Mar 2021
10-Month
8.01"
(203.45mm)
15.19"
(385.83mm)
-7.18"
(-182.38mm)
1st Driest
Driest since:
2021
127th Wettest
Wettest since:
1983
May 2020–Mar 2021
11-Month
8.98"
(228.09mm)
16.11"
(409.19mm)
-7.13"
(-181.10mm)
2nd Driest
Driest since:
1977
126th Wettest
Wettest since:
1983
Apr 2020–Mar 2021
12-Month
10.43"
(264.92mm)
17.45"
(443.23mm)
-7.02"
(-178.31mm)
2nd Driest
Driest since:
1977
126th Wettest
Wettest since:
1983
Oct 2019–Mar 2021
18-Month
19.57"
(497.08mm)
30.93"
(785.62mm)
-11.36"
(-288.54mm)
3rd Driest
Driest since:
1977
124th Wettest
Wettest since:
1983
Apr 2019–Mar 2021
24-Month
24.51"
(622.55mm)
34.89"
(886.21mm)
-10.38"
(-263.66mm)
4th Driest
Driest since:
2022
123rd Wettest
Wettest since:
1983
Apr 2018–Mar 2021
36-Month
45.33"
(1,151.38mm)
52.29"
(1,328.17mm)
-6.96"
(-176.79mm)
33rd Driest
Driest since:
2022
93rd Wettest
Wettest since:
1984
Apr 2017–Mar 2021
48-Month
58.81"
(1,493.77mm)
69.54"
(1,766.32mm)
-10.73"
(-272.55mm)
18th Driest
Driest since:
2015
107th Wettest
Wettest since:
1998
Apr 2016–Mar 2021
60-Month
84.12"
(2,136.65mm)
86.83"
(2,205.48mm)
-2.71"
(-68.83mm)
60th Driest
Driest since:
1933
64th Wettest
Wettest since:
1999

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