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 1925

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
May 1925
1-Month 		0.82"
(20.83mm)		 1.11"
(28.19mm)		 -0.29"
(-7.36mm)		 38th Driest
Driest since:
 1974
91st Wettest
Wettest since:
 2015
Apr–May 1925
2-Month 		1.53"
(38.86mm)		 2.17"
(55.12mm)		 -0.64"
(-16.26mm)		 34th Driest
Driest since:
 2002
95th Wettest
Wettest since:
 1941
Ties: 1911
Mar–May 1925
3-Month 		2.36"
(59.94mm)		 3.33"
(84.58mm)		 -0.97"
(-24.64mm)		 25th Driest
Driest since:
 2002
104th Wettest
Wettest since:
 1941
Feb–May 1925
4-Month 		2.87"
(72.90mm)		 4.33"
(109.98mm)		 -1.46"
(-37.08mm)		 16th Driest
Driest since:
 2002
113th Wettest
Wettest since:
 1905
Jan–May 1925
5-Month 		3.20"
(81.28mm)		 5.31"
(134.87mm)		 -2.11"
(-53.59mm)		 6th Driest
Driest to Date
 1972
123rd Wettest
Wettest since:
 1905
Dec 1924–May 1925
6-Month 		4.80"
(121.92mm)		 6.32"
(160.53mm)		 -1.52"
(-38.61mm)		 29th Driest
Driest since:
 2002
99th Wettest
Wettest since:
 1905
Nov 1924–May 1925
7-Month 		5.19"
(131.83mm)		 7.21"
(183.13mm)		 -2.02"
(-51.30mm)		 22nd Driest
Driest since:
 2002
106th Wettest
Wettest since:
 1941
Oct 1924–May 1925
8-Month 		6.07"
(154.18mm)		 8.34"
(211.84mm)		 -2.27"
(-57.66mm)		 21st Driest
Driest since:
 2002
107th Wettest
Wettest since:
 1941
Ties: 1959
Sep 1924–May 1925
9-Month 		6.93"
(176.02mm)		 9.71"
(246.63mm)		 -2.78"
(-70.61mm)		 14th Driest
Driest since:
 2002
114th Wettest
Wettest since:
 1941
Aug 1924–May 1925
10-Month 		7.75"
(196.85mm)		 11.72"
(297.69mm)		 -3.97"
(-100.84mm)		 5th Driest
Driest since:
 2002
123rd Wettest
Wettest since:
 1941
Jul 1924–May 1925
11-Month 		9.52"
(241.81mm)		 13.59"
(345.19mm)		 -4.07"
(-103.38mm)		 4th Driest
Driest since:
 2021
124th Wettest
Wettest since:
 1941
Jun 1924–May 1925
12-Month 		9.75"
(247.65mm)		 14.53"
(369.06mm)		 -4.78"
(-121.41mm)		 3rd Driest
Driest to Date
 2021
125th Wettest
Wettest since:
 1905
Dec 1923–May 1925
18-Month 		15.63"
(397.00mm)		 20.86"
(529.84mm)		 -5.23"
(-132.84mm)		 5th Driest
Driest to Date
 2021
122nd Wettest
Wettest since:
 1942
Jun 1923–May 1925
24-Month 		26.43"
(671.32mm)		 29.05"
(737.87mm)		 -2.62"
(-66.55mm)		 29th Driest
Driest since:
 2021
98th Wettest
Wettest since:
 1942
Jun 1922–May 1925
36-Month 		38.92"
(988.57mm)		 43.54"
(1,105.92mm)		 -4.62"
(-117.35mm)		 22nd Driest
Driest since:
 2022
104th Wettest
Wettest since:
 1907
Jun 1921–May 1925
48-Month 		55.59"
(1,411.99mm)		 58.01"
(1,473.45mm)		 -2.42"
(-61.46mm)		 47th Driest
Driest since:
 1904
78th Wettest
Wettest since:
 1986
Jun 1920–May 1925
60-Month 		68.86"
(1,749.04mm)		 72.48"
(1,840.99mm)		 -3.62"
(-91.95mm)		 40th Driest
Driest since:
 1957
84th Wettest
Wettest since:
 1987

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