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, July 1990

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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
July 1990 1-Month	2.67" (67.82mm)	1.87" (47.50mm)	0.80" (20.32mm)	119th Driest	Driest since: 1989	2003
	2.67" (67.82mm)	1.87" (47.50mm)	0.80" (20.32mm)	10th Wettest	Wettest since: 1950	1914
	Ties: 1929
Jun–Jul 1990 2-Month	3.18" (80.77mm)	2.81" (71.37mm)	0.37" (9.40mm)	97th Driest	Driest since: 1989	1980
Jun–Jul 1990 2-Month	3.18" (80.77mm)	2.81" (71.37mm)	0.37" (9.40mm)	32nd Wettest	Wettest since: 1986	1921
May–Jul 1990 3-Month	4.13" (104.90mm)	3.93" (99.82mm)	0.20" (5.08mm)	80th Driest	Driest since: 1989	2002
May–Jul 1990 3-Month	4.13" (104.90mm)	3.93" (99.82mm)	0.20" (5.08mm)	49th Wettest	Wettest since: 1988	2015
Apr–Jul 1990 4-Month	5.40" (137.16mm)	4.99" (126.75mm)	0.41" (10.41mm)	97th Driest	Driest since: 1989	2002
	5.40" (137.16mm)	4.99" (126.75mm)	0.41" (10.41mm)	32nd Wettest	Wettest since: 1988	1914
	Ties: 1973
Mar–Jul 1990 5-Month	6.56" (166.62mm)	6.14" (155.96mm)	0.42" (10.66mm)	93rd Driest	Driest since: 1989	2002
Mar–Jul 1990 5-Month	6.56" (166.62mm)	6.14" (155.96mm)	0.42" (10.66mm)	36th Wettest	Wettest since: 1986	1941
Feb–Jul 1990 6-Month	7.57" (192.28mm)	7.14" (181.36mm)	0.43" (10.92mm)	90th Driest	Driest since: 1989	2002
Feb–Jul 1990 6-Month	7.57" (192.28mm)	7.14" (181.36mm)	0.43" (10.92mm)	39th Wettest	Wettest since: 1986	1941
Jan–Jul 1990 7-Month	8.45" (214.63mm)	8.12" (206.25mm)	0.33" (8.38mm)	78th Driest	Driest since: 1989	2002
Jan–Jul 1990 7-Month	8.45" (214.63mm)	8.12" (206.25mm)	0.33" (8.38mm)	51st Wettest	Wettest since: 1986	1905
Dec 1989–Jul 1990 8-Month	8.86" (225.04mm)	9.13" (231.90mm)	-0.27" (-6.86mm)	63rd Driest	Driest since: 1989	2002
Dec 1989–Jul 1990 8-Month	8.86" (225.04mm)	9.13" (231.90mm)	-0.27" (-6.86mm)	65th Wettest	Wettest since: 1988	1941
Nov 1989–Jul 1990 9-Month	9.08" (230.63mm)	10.02" (254.51mm)	-0.94" (-23.88mm)	47th Driest	Driest since: 1989	2002
Nov 1989–Jul 1990 9-Month	9.08" (230.63mm)	10.02" (254.51mm)	-0.94" (-23.88mm)	81st Wettest	Wettest since: 1988	1941
Oct 1989–Jul 1990 10-Month	9.92" (251.97mm)	11.15" (283.21mm)	-1.23" (-31.24mm)	45th Driest	Driest since: 1989	2002
Oct 1989–Jul 1990 10-Month	9.92" (251.97mm)	11.15" (283.21mm)	-1.23" (-31.24mm)	83rd Wettest	Wettest since: 1988	1941
Sep 1989–Jul 1990 11-Month	10.83" (275.08mm)	12.52" (318.01mm)	-1.69" (-42.93mm)	36th Driest	Driest since: 1989	2002
Sep 1989–Jul 1990 11-Month	10.83" (275.08mm)	12.52" (318.01mm)	-1.69" (-42.93mm)	92nd Wettest	Wettest since: 1988	1941
Aug 1989–Jul 1990 12-Month	12.79" (324.87mm)	14.53" (369.06mm)	-1.74" (-44.19mm)	36th Driest	Driest since: 1989	2002
Aug 1989–Jul 1990 12-Month	12.79" (324.87mm)	14.53" (369.06mm)	-1.74" (-44.19mm)	92nd Wettest	Wettest since: 1988	1941
Feb 1989–Jul 1990 18-Month	18.10" (459.74mm)	21.67" (550.42mm)	-3.57" (-90.68mm)	16th Driest	Driest since: 1971	2002
Feb 1989–Jul 1990 18-Month	18.10" (459.74mm)	21.67" (550.42mm)	-3.57" (-90.68mm)	112th Wettest	Wettest since: 1989	1942
Aug 1988–Jul 1990 24-Month	25.28" (642.11mm)	29.06" (738.12mm)	-3.78" (-96.01mm)	24th Driest	Driest since: 1977	2003
Aug 1988–Jul 1990 24-Month	25.28" (642.11mm)	29.06" (738.12mm)	-3.78" (-96.01mm)	103rd Wettest	Wettest since: 1989	1942
Aug 1987–Jul 1990 36-Month	40.47" (1,027.94mm)	43.55" (1,106.17mm)	-3.08" (-78.23mm)	38th Driest	Driest since: 1978	1956
Aug 1987–Jul 1990 36-Month	40.47" (1,027.94mm)	43.55" (1,106.17mm)	-3.08" (-78.23mm)	88th Wettest	Wettest since: 1989	1907
Aug 1986–Jul 1990 48-Month	57.35" (1,456.69mm)	58.02" (1,473.71mm)	-0.67" (-17.02mm)	59th Driest	Driest since: 1979	1956
Aug 1986–Jul 1990 48-Month	57.35" (1,456.69mm)	58.02" (1,473.71mm)	-0.67" (-17.02mm)	66th Wettest	Wettest since: 1989	1986
Aug 1985–Jul 1990 60-Month	73.89" (1,876.81mm)	72.50" (1,841.50mm)	1.39" (35.31mm)	79th Driest	Driest since: 1981	1904
Aug 1985–Jul 1990 60-Month	73.89" (1,876.81mm)	72.50" (1,841.50mm)	1.39" (35.31mm)	45th Wettest	Wettest since: 1989	1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on January 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings