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 2010

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
September 2010
1-Month
0.81"
(20.57mm)
1.36"
(34.54mm)
-0.55"
(-13.97mm)
25th Driest
Driest since:
1953, 1956
104th Wettest
Wettest since:
2013
Ties: 1907
Aug–Sep 2010
2-Month
2.80"
(71.12mm)
3.38"
(85.85mm)
-0.58"
(-14.73mm)
32nd Driest
Driest since:
2020
97th Wettest
Wettest since:
2013
Jul–Sep 2010
3-Month
5.17"
(131.32mm)
5.25"
(133.35mm)
-0.08"
(-2.03mm)
61st Driest
Driest since:
2020
68th Wettest
Wettest since:
2013
Ties: 1957
Jun–Sep 2010
4-Month
5.93"
(150.62mm)
6.19"
(157.23mm)
-0.26"
(-6.61mm)
57th Driest
Driest since:
2020
72nd Wettest
Wettest since:
1927
Ties: 1935, 2016
May–Sep 2010
5-Month
6.65"
(168.91mm)
7.30"
(185.42mm)
-0.65"
(-16.51mm)
42nd Driest
Driest since:
2020
87th Wettest
Wettest since:
1941
Ties: 1993
Apr–Sep 2010
6-Month
7.77"
(197.36mm)
8.36"
(212.34mm)
-0.59"
(-14.98mm)
48th Driest
Driest since:
2020
81st Wettest
Wettest since:
1941
Ties: 2005
Mar–Sep 2010
7-Month
9.02"
(229.11mm)
9.51"
(241.55mm)
-0.49"
(-12.44mm)
57th Driest
Driest since:
1956
72nd Wettest
Wettest since:
1941
Ties: 1900, 1916
Feb–Sep 2010
8-Month
10.26"
(260.60mm)
10.52"
(267.21mm)
-0.26"
(-6.61mm)
66th Driest
Driest since:
1956
63rd Wettest
Wettest since:
1941
Jan–Sep 2010
9-Month
12.12"
(307.85mm)
11.50"
(292.10mm)
0.62"
(15.75mm)
82nd Driest
Driest since:
1956
47th Wettest
Wettest since:
1941
Ties: 1979
Dec 2009–Sep 2010
10-Month
13.35"
(339.09mm)
12.51"
(317.75mm)
0.84"
(21.34mm)
89th Driest
Driest since:
1956
39th Wettest
Wettest since:
1941
Nov 2009–Sep 2010
11-Month
13.74"
(349.00mm)
13.40"
(340.36mm)
0.34"
(8.64mm)
82nd Driest
Driest since:
1956
46th Wettest
Wettest since:
1941
Oct 2009–Sep 2010
12-Month
14.79"
(375.67mm)
14.53"
(369.06mm)
0.26"
(6.61mm)
72nd Driest
Driest since:
1956
56th Wettest
Wettest since:
1941
Apr 2009–Sep 2010
18-Month
22.41"
(569.21mm)
22.92"
(582.17mm)
-0.51"
(-12.96mm)
64th Driest
Driest since:
2021
64th Wettest
Wettest since:
1941
Oct 2008–Sep 2010
24-Month
27.66"
(702.56mm)
29.08"
(738.63mm)
-1.42"
(-36.07mm)
49th Driest
Driest since:
1956
78th Wettest
Wettest since:
1942
Ties: 2000
Oct 2007–Sep 2010
36-Month
41.37"
(1,050.80mm)
43.57"
(1,106.68mm)
-2.20"
(-55.88mm)
46th Driest
Driest since:
1956
80th Wettest
Wettest since:
1907
Ties: 1990
Oct 2006–Sep 2010
48-Month
55.78"
(1,416.81mm)
58.05"
(1,474.47mm)
-2.27"
(-57.66mm)
50th Driest
Driest since:
1956
75th Wettest
Wettest since:
1986
Oct 2005–Sep 2010
60-Month
69.28"
(1,759.71mm)
72.53"
(1,842.26mm)
-3.25"
(-82.55mm)
49th Driest
Driest since:
1957
75th Wettest
Wettest since:
1986

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