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.

Southwest Climate Region

Precipitation Rankings, August 2018

View Period (Months):
Download: csv json xml
  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
August 2018
1-Month
1.65"
(41.91mm)
2.02"
(51.31mm)
-0.37"
(-9.40mm)
35th Driest
Driest since:
1962
94th Wettest
Wettest since:
1963
Ties: 2003
Jul–Aug 2018
2-Month
3.74"
(95.00mm)
3.89"
(98.81mm)
-0.15"
(-3.81mm)
58th Driest
Driest since:
2020
71st Wettest
Wettest since:
1921
Jun–Aug 2018
3-Month
4.33"
(109.98mm)
4.83"
(122.68mm)
-0.50"
(-12.70mm)
44th Driest
Driest since:
2020
85th Wettest
Wettest since:
1921
May–Aug 2018
4-Month
5.11"
(129.79mm)
5.94"
(150.88mm)
-0.83"
(-21.09mm)
32nd Driest
Driest since:
2020
97th Wettest
Wettest since:
1921
Apr–Aug 2018
5-Month
5.67"
(144.02mm)
7.00"
(177.80mm)
-1.33"
(-33.78mm)
17th Driest
Driest since:
2020
112th Wettest
Wettest since:
1999
Mar–Aug 2018
6-Month
6.34"
(161.04mm)
8.15"
(207.01mm)
-1.81"
(-45.97mm)
15th Driest
Driest since:
2002
114th Wettest
Wettest since:
1941
Feb–Aug 2018
7-Month
7.28"
(184.91mm)
9.16"
(232.66mm)
-1.88"
(-47.75mm)
16th Driest
Driest since:
2002
113th Wettest
Wettest since:
1941
Jan–Aug 2018
8-Month
7.84"
(199.14mm)
10.14"
(257.56mm)
-2.30"
(-58.42mm)
12th Driest
Driest since:
2002
117th Wettest
Wettest since:
1941
Dec 2017–Aug 2018
9-Month
8.08"
(205.23mm)
11.15"
(283.21mm)
-3.07"
(-77.98mm)
6th Driest
Driest since:
2002
122nd Wettest
Wettest since:
1941
Nov 2017–Aug 2018
10-Month
8.35"
(212.09mm)
12.04"
(305.82mm)
-3.69"
(-93.73mm)
3rd Driest
Driest since:
2002
125th Wettest
Wettest since:
1941
Oct 2017–Aug 2018
11-Month
8.93"
(226.82mm)
13.17"
(334.52mm)
-4.24"
(-107.70mm)
3rd Driest
Driest since:
2002
125th Wettest
Wettest since:
1941
Sep 2017–Aug 2018
12-Month
10.58"
(268.73mm)
14.54"
(369.32mm)
-3.96"
(-100.59mm)
5th Driest
Driest since:
2002
123rd Wettest
Wettest since:
1941
Mar 2017–Aug 2018
18-Month
18.61"
(472.69mm)
22.69"
(576.33mm)
-4.08"
(-103.64mm)
12th Driest
Driest since:
2002
116th Wettest
Wettest since:
1942
Sep 2016–Aug 2018
24-Month
26.58"
(675.13mm)
29.09"
(738.89mm)
-2.51"
(-63.76mm)
32nd Driest
Driest since:
2003
95th Wettest
Wettest since:
1942
Sep 2015–Aug 2018
36-Month
41.19"
(1,046.23mm)
43.58"
(1,106.93mm)
-2.39"
(-60.70mm)
47th Driest
Driest since:
1956
79th Wettest
Wettest since:
1907
Sep 2014–Aug 2018
48-Month
58.74"
(1,492.00mm)
58.05"
(1,474.47mm)
0.69"
(17.53mm)
78th Driest
Driest since:
1956
47th Wettest
Wettest since:
1986
Sep 2013–Aug 2018
60-Month
73.58"
(1,868.93mm)
72.53"
(1,842.26mm)
1.05"
(26.67mm)
74th Driest
Driest since:
2004
50th Wettest
Wettest since:
1987

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