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 1948

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 1948
1-Month
0.63"
(16.00mm)
1.36"
(34.54mm)
-0.73"
(-18.54mm)
12th Driest
Driest since:
1953, 1956
117th Wettest
Wettest since:
2013
Ties: 1955, 2000
Aug–Sep 1948
2-Month
2.33"
(59.18mm)
3.38"
(85.85mm)
-1.05"
(-26.67mm)
9th Driest
Driest since:
2020
120th Wettest
Wettest since:
2013
Ties: 1898
Jul–Sep 1948
3-Month
3.58"
(90.93mm)
5.25"
(133.35mm)
-1.67"
(-42.42mm)
6th Driest
Driest since:
2020
123rd Wettest
Wettest since:
2013
Jun–Sep 1948
4-Month
5.10"
(129.54mm)
6.19"
(157.23mm)
-1.09"
(-27.69mm)
25th Driest
Driest since:
2020
104th Wettest
Wettest since:
1927
May–Sep 1948
5-Month
5.93"
(150.62mm)
7.30"
(185.42mm)
-1.37"
(-34.80mm)
19th Driest
Driest since:
2020
110th Wettest
Wettest since:
1941
Apr–Sep 1948
6-Month
6.60"
(167.64mm)
8.36"
(212.34mm)
-1.76"
(-44.70mm)
15th Driest
Driest since:
2020
114th Wettest
Wettest since:
1941
Mar–Sep 1948
7-Month
7.92"
(201.17mm)
9.51"
(241.55mm)
-1.59"
(-40.38mm)
21st Driest
Driest since:
1956
108th Wettest
Wettest since:
1941
Feb–Sep 1948
8-Month
9.49"
(241.05mm)
10.51"
(266.95mm)
-1.02"
(-25.90mm)
38th Driest
Driest since:
1956
91st Wettest
Wettest since:
1941
Jan–Sep 1948
9-Month
10.13"
(257.30mm)
11.50"
(292.10mm)
-1.37"
(-34.80mm)
33rd Driest
Driest since:
1956
96th Wettest
Wettest since:
1941
Dec 1947–Sep 1948
10-Month
11.32"
(287.53mm)
12.51"
(317.75mm)
-1.19"
(-30.22mm)
41st Driest
Driest since:
1956
87th Wettest
Wettest since:
1941
Ties: 1939
Nov 1947–Sep 1948
11-Month
12.18"
(309.37mm)
13.40"
(340.36mm)
-1.22"
(-30.99mm)
49th Driest
Driest since:
1956
79th Wettest
Wettest since:
1941
Oct 1947–Sep 1948
12-Month
13.56"
(344.42mm)
14.53"
(369.06mm)
-0.97"
(-24.64mm)
49th Driest
Driest since:
1956
79th Wettest
Wettest since:
1941
Ties: 1940
Apr 1947–Sep 1948
18-Month
21.74"
(552.20mm)
22.92"
(582.17mm)
-1.18"
(-29.97mm)
56th Driest
Driest since:
2021
72nd Wettest
Wettest since:
1941
Oct 1946–Sep 1948
24-Month
27.56"
(700.02mm)
29.08"
(738.63mm)
-1.52"
(-38.61mm)
47th Driest
Driest since:
1956
80th Wettest
Wettest since:
1942
Oct 1945–Sep 1948
36-Month
40.30"
(1,023.62mm)
43.57"
(1,106.68mm)
-3.27"
(-83.06mm)
32nd Driest
Driest since:
1956
94th Wettest
Wettest since:
1907
Oct 1944–Sep 1948
48-Month
54.07"
(1,373.38mm)
58.05"
(1,474.47mm)
-3.98"
(-101.09mm)
33rd Driest
Driest since:
1956
92nd Wettest
Wettest since:
1986
Oct 1943–Sep 1948
60-Month
67.79"
(1,721.87mm)
72.53"
(1,842.26mm)
-4.74"
(-120.39mm)
30th Driest
Driest since:
1957
94th Wettest
Wettest since:
1986

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