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 1987

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 1987
1-Month
1.83"
(46.48mm)
1.11"
(28.19mm)
0.72"
(18.29mm)
118th Driest
Driest since:
1974
11th Wettest
Wettest since:
2015
Apr–May 1987
2-Month
2.37"
(60.20mm)
2.17"
(55.12mm)
0.20"
(5.08mm)
84th Driest
Driest since:
2002
45th Wettest
Wettest since:
1941
Ties: 2005
Mar–May 1987
3-Month
3.44"
(87.38mm)
3.33"
(84.58mm)
0.11"
(2.80mm)
84th Driest
Driest since:
2002
45th Wettest
Wettest since:
1941
Ties: 2001
Feb–May 1987
4-Month
4.92"
(124.97mm)
4.33"
(109.98mm)
0.59"
(14.99mm)
98th Driest
Driest since:
2002
31st Wettest
Wettest since:
1905
Jan–May 1987
5-Month
5.93"
(150.62mm)
5.31"
(134.87mm)
0.62"
(15.75mm)
95th Driest
Driest since:
1972
34th Wettest
Wettest since:
1905
Dec 1986–May 1987
6-Month
6.98"
(177.29mm)
6.32"
(160.53mm)
0.66"
(16.76mm)
91st Driest
Driest since:
2002
37th Wettest
Wettest since:
1905
Ties: 1968
Nov 1986–May 1987
7-Month
8.60"
(218.44mm)
7.21"
(183.13mm)
1.39"
(35.31mm)
103rd Driest
Driest since:
2002
25th Wettest
Wettest since:
1941
Oct 1986–May 1987
8-Month
10.38"
(263.65mm)
8.34"
(211.84mm)
2.04"
(51.81mm)
109th Driest
Driest since:
2002
19th Wettest
Wettest since:
1941
Sep 1986–May 1987
9-Month
12.18"
(309.37mm)
9.71"
(246.63mm)
2.47"
(62.74mm)
110th Driest
Driest since:
2002
18th Wettest
Wettest since:
1941
Aug 1986–May 1987
10-Month
14.44"
(366.78mm)
11.72"
(297.69mm)
2.72"
(69.09mm)
113th Driest
Driest since:
2002
15th Wettest
Wettest since:
1941
Jul 1986–May 1987
11-Month
16.55"
(420.37mm)
13.59"
(345.19mm)
2.96"
(75.18mm)
114th Driest
Driest since:
2021
14th Wettest
Wettest since:
1941
Jun 1986–May 1987
12-Month
18.17"
(461.52mm)
14.53"
(369.06mm)
3.64"
(92.46mm)
118th Driest
Driest since:
2021
10th Wettest
Wettest since:
1905
Dec 1985–May 1987
18-Month
23.97"
(608.84mm)
20.86"
(529.84mm)
3.11"
(79.00mm)
107th Driest
Driest since:
2021
20th Wettest
Wettest since:
1942
Jun 1985–May 1987
24-Month
34.05"
(864.87mm)
29.05"
(737.87mm)
5.00"
(127.00mm)
118th Driest
Driest since:
2021
9th Wettest
Wettest since:
1942
Jun 1984–May 1987
36-Month
53.72"
(1,364.49mm)
43.54"
(1,105.92mm)
10.18"
(258.57mm)
124th Driest
Driest since:
2022
2nd Wettest
Wettest since:
1907
Jun 1983–May 1987
48-Month
69.40"
(1,762.76mm)
58.01"
(1,473.45mm)
11.39"
(289.31mm)
123rd Driest
Driest since:
1904
2nd Wettest
Wettest since:
1986
Jun 1982–May 1987
60-Month
87.71"
(2,227.83mm)
72.48"
(1,840.99mm)
15.23"
(386.84mm)
123rd Driest
Driest since:
1957
1st Wettest
Wettest to Date
1987

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