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 1955

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
August 1955
1-Month
2.68"
(68.07mm)
2.02"
(51.31mm)
0.66"
(16.76mm)
116th Driest
Driest since:
1962
13th Wettest
Wettest since:
1963
Ties: 1947
Jul–Aug 1955
2-Month
4.88"
(123.95mm)
3.89"
(98.81mm)
0.99"
(25.14mm)
116th Driest
Driest since:
2020
13th Wettest
Wettest since:
1921
Jun–Aug 1955
3-Month
5.60"
(142.24mm)
4.83"
(122.68mm)
0.77"
(19.56mm)
106th Driest
Driest since:
2020
23rd Wettest
Wettest since:
1921
Ties: 2015
May–Aug 1955
4-Month
6.86"
(174.24mm)
5.94"
(150.88mm)
0.92"
(23.36mm)
109th Driest
Driest since:
2020
20th Wettest
Wettest since:
1921
Apr–Aug 1955
5-Month
7.37"
(187.20mm)
7.00"
(177.80mm)
0.37"
(9.40mm)
90th Driest
Driest since:
2020
39th Wettest
Wettest since:
1999
Mar–Aug 1955
6-Month
7.70"
(195.58mm)
8.15"
(207.01mm)
-0.45"
(-11.43mm)
49th Driest
Driest since:
2002
80th Wettest
Wettest since:
1941
Ties: 1975, 2016
Feb–Aug 1955
7-Month
8.55"
(217.17mm)
9.16"
(232.66mm)
-0.61"
(-15.49mm)
46th Driest
Driest since:
2002
83rd Wettest
Wettest since:
1941
Ties: 1947, 2007
Jan–Aug 1955
8-Month
9.72"
(246.89mm)
10.14"
(257.56mm)
-0.42"
(-10.67mm)
61st Driest
Driest since:
2002
68th Wettest
Wettest since:
1941
Ties: 1917
Dec 1954–Aug 1955
9-Month
10.24"
(260.10mm)
11.15"
(283.21mm)
-0.91"
(-23.11mm)
47th Driest
Driest since:
2002
81st Wettest
Wettest since:
1941
Nov 1954–Aug 1955
10-Month
10.71"
(272.03mm)
12.04"
(305.82mm)
-1.33"
(-33.79mm)
42nd Driest
Driest since:
2002
86th Wettest
Wettest since:
1941
Ties: 1961
Oct 1954–Aug 1955
11-Month
11.79"
(299.47mm)
13.17"
(334.52mm)
-1.38"
(-35.05mm)
45th Driest
Driest since:
2002
83rd Wettest
Wettest since:
1941
Sep 1954–Aug 1955
12-Month
13.29"
(337.57mm)
14.54"
(369.32mm)
-1.25"
(-31.75mm)
45th Driest
Driest since:
2002
83rd Wettest
Wettest since:
1941
Mar 1954–Aug 1955
18-Month
20.59"
(522.99mm)
22.69"
(576.33mm)
-2.10"
(-53.34mm)
41st Driest
Driest since:
2002
87th Wettest
Wettest since:
1942
Sep 1953–Aug 1955
24-Month
24.15"
(613.41mm)
29.09"
(738.89mm)
-4.94"
(-125.48mm)
13th Driest
Driest since:
2003
114th Wettest
Wettest since:
1942
Sep 1952–Aug 1955
36-Month
36.01"
(914.65mm)
43.58"
(1,106.93mm)
-7.57"
(-192.28mm)
8th Driest
Driest since:
1956
118th Wettest
Wettest since:
1907
Sep 1951–Aug 1955
48-Month
51.08"
(1,297.43mm)
58.05"
(1,474.47mm)
-6.97"
(-177.04mm)
14th Driest
Driest since:
1956
111th Wettest
Wettest since:
1986
Sep 1950–Aug 1955
60-Month
63.42"
(1,610.87mm)
72.53"
(1,842.26mm)
-9.11"
(-231.39mm)
9th Driest
Driest since:
2004
115th Wettest
Wettest since:
1987

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