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.

West Climate Region

Precipitation Rankings, May 2013

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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 2013 1-Month	0.65" (16.51mm)	0.92" (23.37mm)	-0.27" (-6.86mm)	51st Driest	Driest since: 2012	1924
	0.65" (16.51mm)	0.92" (23.37mm)	-0.27" (-6.86mm)	78th Wettest	Wettest since: 2011	1998
	Ties: 2006
Apr–May 2013 2-Month	1.28" (32.51mm)	2.26" (57.40mm)	-0.98" (-24.89mm)	20th Driest	Driest since: 2008	1909
Apr–May 2013 2-Month	1.28" (32.51mm)	2.26" (57.40mm)	-0.98" (-24.89mm)	109th Wettest	Wettest since: 2012	1896
Mar–May 2013 3-Month	2.24" (56.90mm)	4.59" (116.59mm)	-2.35" (-59.69mm)	10th Driest	Driest since: 2008	2008
Mar–May 2013 3-Month	2.24" (56.90mm)	4.59" (116.59mm)	-2.35" (-59.69mm)	119th Wettest	Wettest since: 2012	1995
Feb–May 2013 4-Month	2.74" (69.60mm)	7.31" (185.67mm)	-4.57" (-116.07mm)	3rd Driest	Driest since: 1997	1997
Feb–May 2013 4-Month	2.74" (69.60mm)	7.31" (185.67mm)	-4.57" (-116.07mm)	126th Wettest	Wettest since: 2012	1998
Jan–May 2013 5-Month	3.72" (94.49mm)	10.29" (261.37mm)	-6.57" (-166.88mm)	2nd Driest	Driest since: 2013	2022
Jan–May 2013 5-Month	3.72" (94.49mm)	10.29" (261.37mm)	-6.57" (-166.88mm)	127th Wettest	Wettest since: 2012	1998
Dec 2012–May 2013 6-Month	8.08" (205.23mm)	12.84" (326.14mm)	-4.76" (-120.91mm)	14th Driest	Driest since: 2007	1924
Dec 2012–May 2013 6-Month	8.08" (205.23mm)	12.84" (326.14mm)	-4.76" (-120.91mm)	114th Wettest	Wettest since: 2012	1995
Nov 2012–May 2013 7-Month	10.37" (263.40mm)	14.71" (373.63mm)	-4.34" (-110.23mm)	20th Driest	Driest since: 2012	1977
	10.37" (263.40mm)	14.71" (373.63mm)	-4.34" (-110.23mm)	108th Wettest	Wettest since: 2011	1995
	Ties: 1987
Oct 2012–May 2013 8-Month	11.23" (285.24mm)	15.74" (399.80mm)	-4.51" (-114.56mm)	16th Driest	Driest since: 2012	1977
Oct 2012–May 2013 8-Month	11.23" (285.24mm)	15.74" (399.80mm)	-4.51" (-114.56mm)	112th Wettest	Wettest since: 2011	1983
Sep 2012–May 2013 9-Month	11.51" (292.35mm)	16.23" (412.24mm)	-4.72" (-119.89mm)	13th Driest	Driest since: 2012	2021
	11.51" (292.35mm)	16.23" (412.24mm)	-4.72" (-119.89mm)	115th Wettest	Wettest since: 2011	1983
	Ties: 1994
Aug 2012–May 2013 10-Month	12.10" (307.34mm)	16.62" (422.15mm)	-4.52" (-114.81mm)	18th Driest	Driest since: 2012	2021
Aug 2012–May 2013 10-Month	12.10" (307.34mm)	16.62" (422.15mm)	-4.52" (-114.81mm)	110th Wettest	Wettest since: 2011	1983
Jul 2012–May 2013 11-Month	12.61" (320.29mm)	16.95" (430.53mm)	-4.34" (-110.24mm)	20th Driest	Driest since: 2012	2021
Jul 2012–May 2013 11-Month	12.61" (320.29mm)	16.95" (430.53mm)	-4.34" (-110.24mm)	108th Wettest	Wettest since: 2011	1983
Jun 2012–May 2013 12-Month	12.84" (326.14mm)	17.44" (442.98mm)	-4.60" (-116.84mm)	17th Driest	Driest since: 2012	2021
Jun 2012–May 2013 12-Month	12.84" (326.14mm)	17.44" (442.98mm)	-4.60" (-116.84mm)	111th Wettest	Wettest since: 2011	1983
Dec 2011–May 2013 18-Month	21.49" (545.85mm)	30.25" (768.35mm)	-8.76" (-222.50mm)	7th Driest	Driest since: 1977	1977
Dec 2011–May 2013 18-Month	21.49" (545.85mm)	30.25" (768.35mm)	-8.76" (-222.50mm)	120th Wettest	Wettest since: 2012	1983
Jun 2011–May 2013 24-Month	25.56" (649.22mm)	34.89" (886.21mm)	-9.33" (-236.99mm)	8th Driest	Driest since: 2008	2022
Jun 2011–May 2013 24-Month	25.56" (649.22mm)	34.89" (886.21mm)	-9.33" (-236.99mm)	119th Wettest	Wettest since: 2012	1983
Jun 2010–May 2013 36-Month	47.22" (1,199.39mm)	52.30" (1,328.42mm)	-5.08" (-129.03mm)	40th Driest	Driest since: 2010	2022
Jun 2010–May 2013 36-Month	47.22" (1,199.39mm)	52.30" (1,328.42mm)	-5.08" (-129.03mm)	86th Wettest	Wettest since: 2012	1984
Jun 2009–May 2013 48-Month	65.68" (1,668.27mm)	69.56" (1,766.82mm)	-3.88" (-98.55mm)	52nd Driest	Driest since: 2010	2015
Jun 2009–May 2013 48-Month	65.68" (1,668.27mm)	69.56" (1,766.82mm)	-3.88" (-98.55mm)	73rd Wettest	Wettest since: 2012	1998
Jun 2008–May 2013 60-Month	78.59" (1,996.19mm)	86.83" (2,205.48mm)	-8.24" (-209.29mm)	32nd Driest	Driest since: 2011	1933
Jun 2008–May 2013 60-Month	78.59" (1,996.19mm)	86.83" (2,205.48mm)	-8.24" (-209.29mm)	92nd Wettest	Wettest since: 2012	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published November 2022, retrieved on November 27, 2022 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings