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 1956

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 1956
1-Month
0.09"
(2.29mm)
1.36"
(34.54mm)
-1.27"
(-32.25mm)
1st Driest
Driest since:
1953, 1956
128th Wettest
Wettest since:
2013
Ties: 1953
Aug–Sep 1956
2-Month
1.20"
(30.48mm)
3.38"
(85.85mm)
-2.18"
(-55.37mm)
2nd Driest
Driest since:
2020
127th Wettest
Wettest since:
2013
Jul–Sep 1956
3-Month
2.85"
(72.39mm)
5.25"
(133.35mm)
-2.40"
(-60.96mm)
2nd Driest
Driest since:
2020
127th Wettest
Wettest since:
2013
Jun–Sep 1956
4-Month
3.37"
(85.60mm)
6.19"
(157.23mm)
-2.82"
(-71.63mm)
2nd Driest
Driest since:
2020
127th Wettest
Wettest since:
1927
May–Sep 1956
5-Month
4.08"
(103.63mm)
7.30"
(185.42mm)
-3.22"
(-81.79mm)
2nd Driest
Driest since:
2020
127th Wettest
Wettest since:
1941
Apr–Sep 1956
6-Month
4.77"
(121.16mm)
8.36"
(212.34mm)
-3.59"
(-91.18mm)
2nd Driest
Driest since:
2020
127th Wettest
Wettest since:
1941
Mar–Sep 1956
7-Month
5.00"
(127.00mm)
9.51"
(241.55mm)
-4.51"
(-114.55mm)
1st Driest
Driest since:
1956
128th Wettest
Wettest since:
1941
Feb–Sep 1956
8-Month
5.76"
(146.30mm)
10.52"
(267.21mm)
-4.76"
(-120.91mm)
1st Driest
Driest since:
1956
128th Wettest
Wettest since:
1941
Jan–Sep 1956
9-Month
7.02"
(178.31mm)
11.50"
(292.10mm)
-4.48"
(-113.79mm)
1st Driest
Driest since:
1956
128th Wettest
Wettest since:
1941
Dec 1955–Sep 1956
10-Month
7.71"
(195.83mm)
12.51"
(317.75mm)
-4.80"
(-121.92mm)
1st Driest
Driest since:
1956
127th Wettest
Wettest since:
1941
Nov 1955–Sep 1956
11-Month
8.42"
(213.87mm)
13.40"
(340.36mm)
-4.98"
(-126.49mm)
1st Driest
Driest since:
1956
127th Wettest
Wettest since:
1941
Oct 1955–Sep 1956
12-Month
8.89"
(225.81mm)
14.53"
(369.06mm)
-5.64"
(-143.25mm)
1st Driest
Driest since:
1956
127th Wettest
Wettest since:
1941
Apr 1955–Sep 1956
18-Month
16.89"
(429.01mm)
22.92"
(582.17mm)
-6.03"
(-153.16mm)
3rd Driest
Driest since:
2021
125th Wettest
Wettest since:
1941
Oct 1954–Sep 1956
24-Month
21.31"
(541.27mm)
29.08"
(738.63mm)
-7.77"
(-197.36mm)
1st Driest
Driest since:
1956
126th Wettest
Wettest since:
1942
Oct 1953–Sep 1956
36-Month
33.58"
(852.93mm)
43.57"
(1,106.68mm)
-9.99"
(-253.75mm)
1st Driest
Driest since:
1956
125th Wettest
Wettest since:
1907
Oct 1952–Sep 1956
48-Month
44.54"
(1,131.32mm)
58.05"
(1,474.47mm)
-13.51"
(-343.15mm)
1st Driest
Driest since:
1956
124th Wettest
Wettest since:
1986
Oct 1951–Sep 1956
60-Month
60.11"
(1,526.79mm)
72.53"
(1,842.26mm)
-12.42"
(-315.47mm)
2nd Driest
Driest since:
1957
122nd Wettest
Wettest since:
1986

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