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 1972

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
May 1972
1-Month 		0.66"
(16.76mm)		 1.11"
(28.19mm)		 -0.45"
(-11.43mm)		 27th Driest
Driest since:
 1974
102nd Wettest
Wettest since:
 2015
Apr–May 1972
2-Month 		1.17"
(29.72mm)		 2.17"
(55.12mm)		 -1.00"
(-25.40mm)		 11th Driest
Driest since:
 2002
118th Wettest
Wettest since:
 1941
Ties: 1927
Mar–May 1972
3-Month 		1.44"
(36.58mm)		 3.33"
(84.58mm)		 -1.89"
(-48.00mm)		 2nd Driest
Driest to Date
 2002
127th Wettest
Wettest since:
 1941
Feb–May 1972
4-Month 		1.60"
(40.64mm)		 4.33"
(109.98mm)		 -2.73"
(-69.34mm)		 2nd Driest
Driest to Date
 2002
127th Wettest
Wettest since:
 1905
Jan–May 1972
5-Month 		1.90"
(48.26mm)		 5.31"
(134.87mm)		 -3.41"
(-86.61mm)		 1st Driest
Driest to Date
 1972
128th Wettest
Wettest since:
 1905
Dec 1971–May 1972
6-Month 		3.33"
(84.58mm)		 6.32"
(160.53mm)		 -2.99"
(-75.95mm)		 2nd Driest
Driest to Date
 2002
126th Wettest
Wettest since:
 1905
Nov 1971–May 1972
7-Month 		4.14"
(105.16mm)		 7.21"
(183.13mm)		 -3.07"
(-77.97mm)		 3rd Driest
Driest to Date
 2002
125th Wettest
Wettest since:
 1941
Oct 1971–May 1972
8-Month 		6.02"
(152.91mm)		 8.34"
(211.84mm)		 -2.32"
(-58.93mm)		 18th Driest
Driest since:
 2002
110th Wettest
Wettest since:
 1941
Ties: 1918, 1951
Sep 1971–May 1972
9-Month 		7.58"
(192.53mm)		 9.71"
(246.63mm)		 -2.13"
(-54.10mm)		 26th Driest
Driest since:
 2002
102nd Wettest
Wettest since:
 1941
Ties: 2012
Aug 1971–May 1972
10-Month 		10.16"
(258.06mm)		 11.72"
(297.69mm)		 -1.56"
(-39.63mm)		 36th Driest
Driest since:
 2002
92nd Wettest
Wettest since:
 1941
Jul 1971–May 1972
11-Month 		11.78"
(299.21mm)		 13.59"
(345.19mm)		 -1.81"
(-45.98mm)		 37th Driest
Driest since:
 2021
91st Wettest
Wettest since:
 1941
Ties: 1945, 1976
Jun 1971–May 1972
12-Month 		12.13"
(308.10mm)		 14.53"
(369.06mm)		 -2.40"
(-60.96mm)		 23rd Driest
Driest since:
 2021
105th Wettest
Wettest since:
 1905
Dec 1970–May 1972
18-Month 		16.41"
(416.81mm)		 20.86"
(529.84mm)		 -4.45"
(-113.03mm)		 10th Driest
Driest since:
 2021
117th Wettest
Wettest since:
 1942
Jun 1970–May 1972
24-Month 		24.76"
(628.90mm)		 29.05"
(737.87mm)		 -4.29"
(-108.97mm)		 16th Driest
Driest since:
 2021
111th Wettest
Wettest since:
 1942
Jun 1969–May 1972
36-Month 		39.50"
(1,003.30mm)		 43.54"
(1,105.92mm)		 -4.04"
(-102.62mm)		 28th Driest
Driest since:
 2022
98th Wettest
Wettest since:
 1907
Jun 1968–May 1972
48-Month 		53.37"
(1,355.60mm)		 58.01"
(1,473.45mm)		 -4.64"
(-117.85mm)		 26th Driest
Driest since:
 1904
99th Wettest
Wettest since:
 1986
Jun 1967–May 1972
60-Month 		69.48"
(1,764.79mm)		 72.48"
(1,840.99mm)		 -3.00"
(-76.20mm)		 43rd Driest
Driest since:
 1957
81st Wettest
Wettest since:
 1987
Ties: 1976

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