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, September 2017

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
September 2017
1-Month
1.65"
(41.91mm)
1.36"
(34.54mm)
0.29"
(7.37mm)
87th Driest
Driest since:
1953, 1956
42nd Wettest
Wettest since:
2013
Ties: 1915
Aug–Sep 2017
2-Month
3.53"
(89.66mm)
3.38"
(85.85mm)
0.15"
(3.81mm)
83rd Driest
Driest since:
2020
46th Wettest
Wettest since:
2013
Jul–Sep 2017
3-Month
6.10"
(154.94mm)
5.25"
(133.35mm)
0.85"
(21.59mm)
103rd Driest
Driest since:
2020
26th Wettest
Wettest since:
2013
Jun–Sep 2017
4-Month
6.59"
(167.39mm)
6.19"
(157.23mm)
0.40"
(10.16mm)
87th Driest
Driest since:
2020
42nd Wettest
Wettest since:
1927
May–Sep 2017
5-Month
7.73"
(196.34mm)
7.30"
(185.42mm)
0.43"
(10.92mm)
85th Driest
Driest since:
2020
44th Wettest
Wettest since:
1941
Apr–Sep 2017
6-Month
8.83"
(224.28mm)
8.36"
(212.34mm)
0.47"
(11.94mm)
89th Driest
Driest since:
2020
40th Wettest
Wettest since:
1941
Ties: 1991
Mar–Sep 2017
7-Month
9.68"
(245.87mm)
9.51"
(241.55mm)
0.17"
(4.32mm)
81st Driest
Driest since:
1956
48th Wettest
Wettest since:
1941
Feb–Sep 2017
8-Month
10.74"
(272.80mm)
10.52"
(267.21mm)
0.22"
(5.59mm)
75th Driest
Driest since:
1956
54th Wettest
Wettest since:
1941
Jan–Sep 2017
9-Month
12.90"
(327.66mm)
11.50"
(292.10mm)
1.40"
(35.56mm)
104th Driest
Driest since:
1956
25th Wettest
Wettest since:
1941
Dec 2016–Sep 2017
10-Month
14.58"
(370.33mm)
12.51"
(317.75mm)
2.07"
(52.58mm)
113th Driest
Driest since:
1956
15th Wettest
Wettest since:
1941
Nov 2016–Sep 2017
11-Month
15.63"
(397.00mm)
13.40"
(340.36mm)
2.23"
(56.64mm)
110th Driest
Driest since:
1956
18th Wettest
Wettest since:
1941
Oct 2016–Sep 2017
12-Month
16.11"
(409.19mm)
14.53"
(369.06mm)
1.58"
(40.13mm)
99th Driest
Driest since:
1956
29th Wettest
Wettest since:
1941
Apr 2016–Sep 2017
18-Month
24.75"
(628.65mm)
22.92"
(582.17mm)
1.83"
(46.48mm)
98th Driest
Driest since:
2021
30th Wettest
Wettest since:
1941
Ties: 1979, 1991
Oct 2015–Sep 2017
24-Month
31.21"
(792.73mm)
29.08"
(738.63mm)
2.13"
(54.10mm)
98th Driest
Driest since:
1956
29th Wettest
Wettest since:
1942
Oct 2014–Sep 2017
36-Month
47.20"
(1,198.88mm)
43.57"
(1,106.68mm)
3.63"
(92.20mm)
102nd Driest
Driest since:
1956
24th Wettest
Wettest since:
1907
Oct 2013–Sep 2017
48-Month
61.44"
(1,560.58mm)
58.05"
(1,474.47mm)
3.39"
(86.11mm)
97th Driest
Driest since:
1956
28th Wettest
Wettest since:
1986
Oct 2012–Sep 2017
60-Month
75.35"
(1,913.89mm)
72.53"
(1,842.26mm)
2.82"
(71.63mm)
90th Driest
Driest since:
1957
34th Wettest
Wettest since:
1986

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