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 1908

View Period (Months):
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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
May 1908
1-Month 		1.21"
(30.73mm)		 1.11"
(28.19mm)		 0.10"
(2.54mm)		 84th Driest
Driest since:
 1974
45th Wettest
Wettest since:
 2015
Ties: 1983
Apr–May 1908
2-Month 		2.21"
(56.13mm)		 2.17"
(55.12mm)		 0.04"
(1.01mm)		 68th Driest
Driest since:
 2002
61st Wettest
Wettest since:
 1941
Ties: 1940
Mar–May 1908
3-Month 		2.93"
(74.42mm)		 3.33"
(84.58mm)		 -0.40"
(-10.16mm)		 50th Driest
Driest since:
 2002
79th Wettest
Wettest since:
 1941
Feb–May 1908
4-Month 		4.51"
(114.55mm)		 4.33"
(109.98mm)		 0.18"
(4.57mm)		 82nd Driest
Driest since:
 2002
47th Wettest
Wettest since:
 1905
Jan–May 1908
5-Month 		5.31"
(134.87mm)		 5.31"
(134.87mm)		 0.00"
(0.00mm)		 74th Driest
Driest since:
 1972
55th Wettest
Wettest since:
 1905
Dec 1907–May 1908
6-Month 		6.05"
(153.67mm)		 6.32"
(160.53mm)		 -0.27"
(-6.86mm)		 69th Driest
Driest since:
 2002
59th Wettest
Wettest since:
 1905
Ties: 1903
Nov 1907–May 1908
7-Month 		6.70"
(170.18mm)		 7.21"
(183.13mm)		 -0.51"
(-12.95mm)		 55th Driest
Driest since:
 2002
73rd Wettest
Wettest since:
 1941
Ties: 1966
Oct 1907–May 1908
8-Month 		8.50"
(215.90mm)		 8.34"
(211.84mm)		 0.16"
(4.06mm)		 76th Driest
Driest since:
 2002
52nd Wettest
Wettest since:
 1941
Sep 1907–May 1908
9-Month 		9.31"
(236.47mm)		 9.71"
(246.63mm)		 -0.40"
(-10.16mm)		 62nd Driest
Driest since:
 2002
66th Wettest
Wettest since:
 1941
Ties: 1939
Aug 1907–May 1908
10-Month 		12.06"
(306.32mm)		 11.72"
(297.69mm)		 0.34"
(8.63mm)		 78th Driest
Driest since:
 2002
50th Wettest
Wettest since:
 1941
Jul 1907–May 1908
11-Month 		13.91"
(353.31mm)		 13.59"
(345.19mm)		 0.32"
(8.12mm)		 74th Driest
Driest since:
 2021
54th Wettest
Wettest since:
 1941
Jun 1907–May 1908
12-Month 		14.85"
(377.19mm)		 14.53"
(369.06mm)		 0.32"
(8.13mm)		 76th Driest
Driest since:
 2021
52nd Wettest
Wettest since:
 1905
Ties: 1944, 2001
Dec 1906–May 1908
18-Month 		23.19"
(589.03mm)		 20.86"
(529.84mm)		 2.33"
(59.19mm)		 103rd Driest
Driest since:
 2021
24th Wettest
Wettest since:
 1942
Jun 1906–May 1908
24-Month 		32.36"
(821.94mm)		 29.05"
(737.87mm)		 3.31"
(84.07mm)		 106th Driest
Driest since:
 2021
21st Wettest
Wettest since:
 1942
Jun 1905–May 1908
36-Month 		49.00"
(1,244.60mm)		 43.54"
(1,105.92mm)		 5.46"
(138.68mm)		 111th Driest
Driest since:
 2022
15th Wettest
Wettest since:
 1907
Jun 1904–May 1908
48-Month 		69.13"
(1,755.90mm)		 58.01"
(1,473.45mm)		 11.12"
(282.45mm)		 121st Driest
Driest since:
 1904
4th Wettest
Wettest to Date
 1986
Jun 1903–May 1908
60-Month 		79.76"
(2,025.90mm)		 72.48"
(1,840.99mm)		 7.28"
(184.91mm)		 113th Driest
Driest since:
 1957
11th Wettest
Wettest to Date
 1987

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