Regional Rankings

Regional Data Info
Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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 1988

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
May 1988
1-Month		1.17"
(29.72mm)		1.11"
(28.19mm)		0.06"
(1.53mm)		78th Driest
Driest since:
1974
51st Wettest
Wettest since:
2015
Ties: 1997
Apr–May 1988
2-Month		2.78"
(70.61mm)		2.17"
(55.12mm)		0.61"
(15.49mm)		108th Driest
Driest since:
2002
21st Wettest
Wettest since:
1941
Mar–May 1988
3-Month		3.35"
(85.09mm)		3.33"
(84.58mm)		0.02"
(0.51mm)		78th Driest
Driest since:
2002
51st Wettest
Wettest since:
1941
Feb–May 1988
4-Month		4.03"
(102.36mm)		4.33"
(109.98mm)		-0.30"
(-7.62mm)		60th Driest
Driest since:
2002
69th Wettest
Wettest since:
1905
Jan–May 1988
5-Month		5.12"
(130.05mm)		5.31"
(134.87mm)		-0.19"
(-4.82mm)		65th Driest
Driest since:
1972
64th Wettest
Wettest since:
1905
Dec 1987–May 1988
6-Month		6.43"
(163.32mm)		6.32"
(160.53mm)		0.11"
(2.79mm)		80th Driest
Driest since:
2002
48th Wettest
Wettest since:
1905
Nov 1987–May 1988
7-Month		7.84"
(199.14mm)		7.21"
(183.13mm)		0.63"
(16.01mm)		92nd Driest
Driest since:
2002
36th Wettest
Wettest since:
1941
Oct 1987–May 1988
8-Month		8.95"
(227.33mm)		8.34"
(211.84mm)		0.61"
(15.49mm)		84th Driest
Driest since:
2002
44th Wettest
Wettest since:
1941
Sep 1987–May 1988
9-Month		9.69"
(246.13mm)		9.71"
(246.63mm)		-0.02"
(-0.50mm)		68th Driest
Driest since:
2002
60th Wettest
Wettest since:
1941
Aug 1987–May 1988
10-Month		12.18"
(309.37mm)		11.72"
(297.69mm)		0.46"
(11.68mm)		82nd Driest
Driest since:
2002
46th Wettest
Wettest since:
1941
Jul 1987–May 1988
11-Month		13.54"
(343.92mm)		13.59"
(345.19mm)		-0.05"
(-1.27mm)		71st Driest
Driest since:
2021
57th Wettest
Wettest since:
1941
Ties: 1944
Jun 1987–May 1988
12-Month		14.62"
(371.35mm)		14.53"
(369.06mm)		0.09"
(2.29mm)		72nd Driest
Driest since:
2021
56th Wettest
Wettest since:
1905
Dec 1986–May 1988
18-Month		21.60"
(548.64mm)		20.86"
(529.84mm)		0.74"
(18.80mm)		92nd Driest
Driest since:
2021
35th Wettest
Wettest since:
1942
Ties: 2015
Jun 1986–May 1988
24-Month		32.79"
(832.87mm)		29.05"
(737.87mm)		3.74"
(95.00mm)		107th Driest
Driest since:
2021
20th Wettest
Wettest since:
1942
Jun 1985–May 1988
36-Month		48.67"
(1,236.22mm)		43.54"
(1,105.92mm)		5.13"
(130.30mm)		110th Driest
Driest since:
2022
16th Wettest
Wettest since:
1907
Jun 1984–May 1988
48-Month		68.34"
(1,735.84mm)		58.01"
(1,473.45mm)		10.33"
(262.39mm)		120th Driest
Driest since:
1904
5th Wettest
Wettest since:
1986
Jun 1983–May 1988
60-Month		84.02"
(2,134.11mm)		72.48"
(1,840.99mm)		11.54"
(293.12mm)		120th Driest
Driest since:
1957
4th Wettest
Wettest since:
1987

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