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 2008

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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 2008 1-Month	0.73" (18.54mm)	0.92" (23.37mm)	-0.19" (-4.83mm)	59th Driest	Driest since: 2007	1924
	0.73" (18.54mm)	0.92" (23.37mm)	-0.19" (-4.83mm)	70th Wettest	Wettest since: 2005	1998
	Ties: 1902, 1931, 1967
Apr–May 2008 2-Month	1.02" (25.91mm)	2.26" (57.40mm)	-1.24" (-31.49mm)	11th Driest	Driest since: 1992	1909
Apr–May 2008 2-Month	1.02" (25.91mm)	2.26" (57.40mm)	-1.24" (-31.49mm)	118th Wettest	Wettest since: 2007	1896
Mar–May 2008 3-Month	1.54" (39.12mm)	4.59" (116.59mm)	-3.05" (-77.47mm)	1st Driest	Driest since: 2008	2008
Mar–May 2008 3-Month	1.54" (39.12mm)	4.59" (116.59mm)	-3.05" (-77.47mm)	128th Wettest	Wettest since: 2007	1995
Feb–May 2008 4-Month	3.61" (91.69mm)	7.31" (185.67mm)	-3.70" (-93.98mm)	8th Driest	Driest since: 1997	1997
Feb–May 2008 4-Month	3.61" (91.69mm)	7.31" (185.67mm)	-3.70" (-93.98mm)	121st Wettest	Wettest since: 2007	1998
Jan–May 2008 5-Month	8.40" (213.36mm)	10.29" (261.37mm)	-1.89" (-48.01mm)	46th Driest	Driest since: 2007	2022
Jan–May 2008 5-Month	8.40" (213.36mm)	10.29" (261.37mm)	-1.89" (-48.01mm)	83rd Wettest	Wettest since: 2006	1998
Dec 2007–May 2008 6-Month	10.85" (275.59mm)	12.84" (326.14mm)	-1.99" (-50.55mm)	50th Driest	Driest since: 2007	1924
Dec 2007–May 2008 6-Month	10.85" (275.59mm)	12.84" (326.14mm)	-1.99" (-50.55mm)	78th Wettest	Wettest since: 2006	1995
Nov 2007–May 2008 7-Month	11.47" (291.34mm)	14.71" (373.63mm)	-3.24" (-82.29mm)	33rd Driest	Driest since: 2007	1977
Nov 2007–May 2008 7-Month	11.47" (291.34mm)	14.71" (373.63mm)	-3.24" (-82.29mm)	95th Wettest	Wettest since: 2006	1995
Oct 2007–May 2008 8-Month	12.61" (320.29mm)	15.74" (399.80mm)	-3.13" (-79.51mm)	40th Driest	Driest since: 2007	1977
Oct 2007–May 2008 8-Month	12.61" (320.29mm)	15.74" (399.80mm)	-3.13" (-79.51mm)	88th Wettest	Wettest since: 2006	1983
Sep 2007–May 2008 9-Month	13.26" (336.80mm)	16.23" (412.24mm)	-2.97" (-75.44mm)	43rd Driest	Driest since: 2007	2021
Sep 2007–May 2008 9-Month	13.26" (336.80mm)	16.23" (412.24mm)	-2.97" (-75.44mm)	85th Wettest	Wettest since: 2006	1983
Aug 2007–May 2008 10-Month	13.57" (344.68mm)	16.62" (422.15mm)	-3.05" (-77.47mm)	40th Driest	Driest since: 2007	2021
Aug 2007–May 2008 10-Month	13.57" (344.68mm)	16.62" (422.15mm)	-3.05" (-77.47mm)	88th Wettest	Wettest since: 2006	1983
Jul 2007–May 2008 11-Month	13.84" (351.54mm)	16.95" (430.53mm)	-3.11" (-78.99mm)	42nd Driest	Driest since: 2007	2021
Jul 2007–May 2008 11-Month	13.84" (351.54mm)	16.95" (430.53mm)	-3.11" (-78.99mm)	86th Wettest	Wettest since: 2006	1983
Jun 2007–May 2008 12-Month	14.05" (356.87mm)	17.44" (442.98mm)	-3.39" (-86.11mm)	37th Driest	Driest since: 2007	2021
Jun 2007–May 2008 12-Month	14.05" (356.87mm)	17.44" (442.98mm)	-3.39" (-86.11mm)	91st Wettest	Wettest since: 2006	1983
Dec 2006–May 2008 18-Month	21.79" (553.47mm)	30.25" (768.35mm)	-8.46" (-214.88mm)	10th Driest	Driest since: 1977	1977
Dec 2006–May 2008 18-Month	21.79" (553.47mm)	30.25" (768.35mm)	-8.46" (-214.88mm)	117th Wettest	Wettest since: 2007	1983
Jun 2006–May 2008 24-Month	24.65" (626.11mm)	34.89" (886.21mm)	-10.24" (-260.10mm)	6th Driest	Driest since: 1977	2022
Jun 2006–May 2008 24-Month	24.65" (626.11mm)	34.89" (886.21mm)	-10.24" (-260.10mm)	121st Wettest	Wettest since: 2007	1983
Jun 2005–May 2008 36-Month	47.06" (1,195.32mm)	52.30" (1,328.42mm)	-5.24" (-133.10mm)	38th Driest	Driest since: 2004	2022
Jun 2005–May 2008 36-Month	47.06" (1,195.32mm)	52.30" (1,328.42mm)	-5.24" (-133.10mm)	88th Wettest	Wettest since: 2007	1984
Jun 2004–May 2008 48-Month	70.50" (1,790.70mm)	69.56" (1,766.82mm)	0.94" (23.88mm)	77th Driest	Driest since: 2005	2015
Jun 2004–May 2008 48-Month	70.50" (1,790.70mm)	69.56" (1,766.82mm)	0.94" (23.88mm)	48th Wettest	Wettest since: 2007	1998
Jun 2003–May 2008 60-Month	85.73" (2,177.54mm)	86.83" (2,205.48mm)	-1.10" (-27.94mm)	69th Driest	Driest since: 2005	1933
	85.73" (2,177.54mm)	86.83" (2,205.48mm)	-1.10" (-27.94mm)	55th Wettest	Wettest since: 2007	1999
	Ties: 1967

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