Regional Rankings

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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 2001

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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 2001 1-Month	1.18" (29.97mm)	1.11" (28.19mm)	0.07" (1.78mm)	80th Driest	Driest since: 2000	1974
	1.18" (29.97mm)	1.11" (28.19mm)	0.07" (1.78mm)	49th Wettest	Wettest since: 1999	2015
	Ties: 2009
Apr–May 2001 2-Month	2.26" (57.40mm)	2.17" (55.12mm)	0.09" (2.28mm)	76th Driest	Driest since: 2000	2002
	2.26" (57.40mm)	2.17" (55.12mm)	0.09" (2.28mm)	53rd Wettest	Wettest since: 1999	1941
	Ties: 1923, 1958, 1977
Mar–May 2001 3-Month	3.44" (87.38mm)	3.33" (84.58mm)	0.11" (2.80mm)	84th Driest	Driest since: 2000	2002
	3.44" (87.38mm)	3.33" (84.58mm)	0.11" (2.80mm)	45th Wettest	Wettest since: 1999	1941
	Ties: 1987
Feb–May 2001 4-Month	4.44" (112.78mm)	4.33" (109.98mm)	0.11" (2.80mm)	79th Driest	Driest since: 2000	2002
	4.44" (112.78mm)	4.33" (109.98mm)	0.11" (2.80mm)	50th Wettest	Wettest since: 1999	1905
	Ties: 1976
Jan–May 2001 5-Month	5.68" (144.27mm)	5.31" (134.87mm)	0.37" (9.40mm)	88th Driest	Driest since: 2000	1972
	5.68" (144.27mm)	5.31" (134.87mm)	0.37" (9.40mm)	41st Wettest	Wettest since: 1998	1905
	Ties: 1940
Dec 2000–May 2001 6-Month	6.18" (156.97mm)	6.32" (160.53mm)	-0.14" (-3.56mm)	76th Driest	Driest since: 2000	2002
Dec 2000–May 2001 6-Month	6.18" (156.97mm)	6.32" (160.53mm)	-0.14" (-3.56mm)	52nd Wettest	Wettest since: 1998	1905
Nov 2000–May 2001 7-Month	7.12" (180.85mm)	7.21" (183.13mm)	-0.09" (-2.28mm)	72nd Driest	Driest since: 2000	2002
Nov 2000–May 2001 7-Month	7.12" (180.85mm)	7.21" (183.13mm)	-0.09" (-2.28mm)	56th Wettest	Wettest since: 1998	1941
Oct 2000–May 2001 8-Month	9.98" (253.49mm)	8.34" (211.84mm)	1.64" (41.65mm)	105th Driest	Driest since: 2000	2002
Oct 2000–May 2001 8-Month	9.98" (253.49mm)	8.34" (211.84mm)	1.64" (41.65mm)	23rd Wettest	Wettest since: 1995	1941
Sep 2000–May 2001 9-Month	10.61" (269.49mm)	9.71" (246.63mm)	0.90" (22.86mm)	91st Driest	Driest since: 2000	2002
	10.61" (269.49mm)	9.71" (246.63mm)	0.90" (22.86mm)	37th Wettest	Wettest since: 1998	1941
	Ties: 1975
Aug 2000–May 2001 10-Month	12.56" (319.02mm)	11.72" (297.69mm)	0.84" (21.33mm)	91st Driest	Driest since: 2000	2002
	12.56" (319.02mm)	11.72" (297.69mm)	0.84" (21.33mm)	37th Wettest	Wettest since: 1998	1941
	Ties: 1909
Jul 2000–May 2001 11-Month	13.66" (346.96mm)	13.59" (345.19mm)	0.07" (1.77mm)	72nd Driest	Driest since: 2000	2021
Jul 2000–May 2001 11-Month	13.66" (346.96mm)	13.59" (345.19mm)	0.07" (1.77mm)	56th Wettest	Wettest since: 1999	1941
Jun 2000–May 2001 12-Month	14.85" (377.19mm)	14.53" (369.06mm)	0.32" (8.13mm)	76th Driest	Driest since: 2000	2021
	14.85" (377.19mm)	14.53" (369.06mm)	0.32" (8.13mm)	52nd Wettest	Wettest since: 1999	1905
	Ties: 1908, 1944
Dec 1999–May 2001 18-Month	19.76" (501.90mm)	20.86" (529.84mm)	-1.10" (-27.94mm)	52nd Driest	Driest since: 2000	2021
Dec 1999–May 2001 18-Month	19.76" (501.90mm)	20.86" (529.84mm)	-1.10" (-27.94mm)	75th Wettest	Wettest since: 1999	1942
Jun 1999–May 2001 24-Month	28.39" (721.11mm)	29.05" (737.87mm)	-0.66" (-16.76mm)	65th Driest	Driest since: 1997	2021
Jun 1999–May 2001 24-Month	28.39" (721.11mm)	29.05" (737.87mm)	-0.66" (-16.76mm)	62nd Wettest	Wettest since: 2000	1942
Jun 1998–May 2001 36-Month	44.08" (1,119.63mm)	43.54" (1,105.92mm)	0.54" (13.71mm)	79th Driest	Driest since: 1997	2022
Jun 1998–May 2001 36-Month	44.08" (1,119.63mm)	43.54" (1,105.92mm)	0.54" (13.71mm)	47th Wettest	Wettest since: 2000	1907
Jun 1997–May 2001 48-Month	61.52" (1,562.61mm)	58.01" (1,473.45mm)	3.51" (89.16mm)	101st Driest	Driest since: 1999	1904
Jun 1997–May 2001 48-Month	61.52" (1,562.61mm)	58.01" (1,473.45mm)	3.51" (89.16mm)	24th Wettest	Wettest since: 2000	1986
Jun 1996–May 2001 60-Month	77.51" (1,968.75mm)	72.48" (1,840.99mm)	5.03" (127.76mm)	103rd Driest	Driest since: 2000	1957
Jun 1996–May 2001 60-Month	77.51" (1,968.75mm)	72.48" (1,840.99mm)	5.03" (127.76mm)	21st Wettest	Wettest since: 1995	1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings