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, May 1957

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
May 1957
1-Month
2.28"
(57.91mm)
1.11"
(28.19mm)
1.17"
(29.72mm)
127th Driest
Driest since:
1974
2nd Wettest
Wettest to Date
2015
Apr–May 1957
2-Month
4.00"
(101.60mm)
2.17"
(55.12mm)
1.83"
(46.48mm)
126th Driest
Driest since:
2002
3rd Wettest
Wettest since:
1941
Mar–May 1957
3-Month
5.18"
(131.57mm)
3.33"
(84.58mm)
1.85"
(46.99mm)
124th Driest
Driest since:
2002
5th Wettest
Wettest since:
1941
Feb–May 1957
4-Month
5.86"
(148.84mm)
4.33"
(109.98mm)
1.53"
(38.86mm)
118th Driest
Driest since:
2002
11th Wettest
Wettest since:
1905
Jan–May 1957
5-Month
7.89"
(200.41mm)
5.31"
(134.87mm)
2.58"
(65.54mm)
123rd Driest
Driest since:
1972
6th Wettest
Wettest since:
1905
Dec 1956–May 1957
6-Month
8.38"
(212.85mm)
6.32"
(160.53mm)
2.06"
(52.32mm)
116th Driest
Driest since:
2002
12th Wettest
Wettest since:
1905
Nov 1956–May 1957
7-Month
8.70"
(220.98mm)
7.21"
(183.13mm)
1.49"
(37.85mm)
105th Driest
Driest since:
2002
23rd Wettest
Wettest since:
1941
Oct 1956–May 1957
8-Month
9.34"
(237.24mm)
8.34"
(211.84mm)
1.00"
(25.40mm)
97th Driest
Driest since:
2002
31st Wettest
Wettest since:
1941
Ties: 2015
Sep 1956–May 1957
9-Month
9.43"
(239.52mm)
9.71"
(246.63mm)
-0.28"
(-7.11mm)
65th Driest
Driest since:
2002
63rd Wettest
Wettest since:
1941
Ties: 2014
Aug 1956–May 1957
10-Month
10.54"
(267.72mm)
11.72"
(297.69mm)
-1.18"
(-29.97mm)
43rd Driest
Driest since:
2002
85th Wettest
Wettest since:
1941
Jul 1956–May 1957
11-Month
12.19"
(309.63mm)
13.59"
(345.19mm)
-1.40"
(-35.56mm)
44th Driest
Driest since:
2021
84th Wettest
Wettest since:
1941
Ties: 1964
Jun 1956–May 1957
12-Month
12.71"
(322.83mm)
14.53"
(369.06mm)
-1.82"
(-46.23mm)
39th Driest
Driest since:
2021
89th Wettest
Wettest since:
1905
Dec 1955–May 1957
18-Month
17.05"
(433.07mm)
20.86"
(529.84mm)
-3.81"
(-96.77mm)
15th Driest
Driest since:
2021
112th Wettest
Wettest since:
1942
Jun 1955–May 1957
24-Month
24.46"
(621.28mm)
29.05"
(737.87mm)
-4.59"
(-116.59mm)
15th Driest
Driest since:
2021
112th Wettest
Wettest since:
1942
Jun 1954–May 1957
36-Month
36.43"
(925.32mm)
43.54"
(1,105.92mm)
-7.11"
(-180.60mm)
8th Driest
Driest since:
2022
118th Wettest
Wettest since:
1907
Jun 1953–May 1957
48-Month
47.68"
(1,211.07mm)
58.01"
(1,473.45mm)
-10.33"
(-262.38mm)
3rd Driest
Driest since:
1904
122nd Wettest
Wettest since:
1986
Jun 1952–May 1957
60-Month
59.22"
(1,504.19mm)
72.48"
(1,840.99mm)
-13.26"
(-336.80mm)
1st Driest
Driest since:
1957
123rd Wettest
Wettest since:
1987

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