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 1984

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1984 1-Month	0.42" (10.67mm)	0.92" (23.37mm)	-0.50" (-12.70mm)	22nd Driest	Driest since: 1978	1924
	0.42" (10.67mm)	0.92" (23.37mm)	-0.50" (-12.70mm)	107th Wettest	Wettest since: 1983	1998
	Ties: 1976
Apr–May 1984 2-Month	1.51" (38.35mm)	2.26" (57.40mm)	-0.75" (-19.05mm)	29th Driest	Driest since: 1974	1909
Apr–May 1984 2-Month	1.51" (38.35mm)	2.26" (57.40mm)	-0.75" (-19.05mm)	100th Wettest	Wettest since: 1983	1896
Mar–May 1984 3-Month	2.88" (73.15mm)	4.59" (116.59mm)	-1.71" (-43.44mm)	24th Driest	Driest since: 1976	2008
Mar–May 1984 3-Month	2.88" (73.15mm)	4.59" (116.59mm)	-1.71" (-43.44mm)	105th Wettest	Wettest since: 1983	1995
Feb–May 1984 4-Month	4.50" (114.30mm)	7.31" (185.67mm)	-2.81" (-71.37mm)	21st Driest	Driest since: 1977	1997
Feb–May 1984 4-Month	4.50" (114.30mm)	7.31" (185.67mm)	-2.81" (-71.37mm)	108th Wettest	Wettest since: 1983	1998
Jan–May 1984 5-Month	4.84" (122.94mm)	10.29" (261.37mm)	-5.45" (-138.43mm)	5th Driest	Driest since: 1972	2022
Jan–May 1984 5-Month	4.84" (122.94mm)	10.29" (261.37mm)	-5.45" (-138.43mm)	124th Wettest	Wettest since: 1983	1998
Dec 1983–May 1984 6-Month	10.09" (256.29mm)	12.84" (326.14mm)	-2.75" (-69.85mm)	36th Driest	Driest since: 1977	1924
Dec 1983–May 1984 6-Month	10.09" (256.29mm)	12.84" (326.14mm)	-2.75" (-69.85mm)	92nd Wettest	Wettest since: 1983	1995
Nov 1983–May 1984 7-Month	14.75" (374.65mm)	14.71" (373.63mm)	0.04" (1.02mm)	75th Driest	Driest since: 1981	1977
Nov 1983–May 1984 7-Month	14.75" (374.65mm)	14.71" (373.63mm)	0.04" (1.02mm)	53rd Wettest	Wettest since: 1983	1995
Oct 1983–May 1984 8-Month	15.84" (402.34mm)	15.74" (399.80mm)	0.10" (2.54mm)	71st Driest	Driest since: 1981	1977
Oct 1983–May 1984 8-Month	15.84" (402.34mm)	15.74" (399.80mm)	0.10" (2.54mm)	57th Wettest	Wettest since: 1983	1983
Sep 1983–May 1984 9-Month	16.87" (428.50mm)	16.23" (412.24mm)	0.64" (16.26mm)	78th Driest	Driest since: 1981	2021
Sep 1983–May 1984 9-Month	16.87" (428.50mm)	16.23" (412.24mm)	0.64" (16.26mm)	50th Wettest	Wettest since: 1983	1983
Aug 1983–May 1984 10-Month	18.55" (471.17mm)	16.62" (422.15mm)	1.93" (49.02mm)	91st Driest	Driest since: 1981	2021
Aug 1983–May 1984 10-Month	18.55" (471.17mm)	16.62" (422.15mm)	1.93" (49.02mm)	37th Wettest	Wettest since: 1983	1983
Jul 1983–May 1984 11-Month	18.67" (474.22mm)	16.95" (430.53mm)	1.72" (43.69mm)	88th Driest	Driest since: 1981	2021
Jul 1983–May 1984 11-Month	18.67" (474.22mm)	16.95" (430.53mm)	1.72" (43.69mm)	40th Wettest	Wettest since: 1983	1983
Jun 1983–May 1984 12-Month	19.12" (485.65mm)	17.44" (442.98mm)	1.68" (42.67mm)	90th Driest	Driest since: 1981	2021
	19.12" (485.65mm)	17.44" (442.98mm)	1.68" (42.67mm)	38th Wettest	Wettest since: 1983	1983
	Ties: 2016
Dec 1982–May 1984 18-Month	40.46" (1,027.68mm)	30.25" (768.35mm)	10.21" (259.33mm)	120th Driest	Driest since: 1982	1977
Dec 1982–May 1984 18-Month	40.46" (1,027.68mm)	30.25" (768.35mm)	10.21" (259.33mm)	7th Wettest	Wettest since: 1983	1983
Jun 1982–May 1984 24-Month	49.60" (1,259.84mm)	34.89" (886.21mm)	14.71" (373.63mm)	125th Driest	Driest since: 1982	2022
Jun 1982–May 1984 24-Month	49.60" (1,259.84mm)	34.89" (886.21mm)	14.71" (373.63mm)	2nd Wettest	Wettest since: 1983	1983
Jun 1981–May 1984 36-Month	71.81" (1,823.97mm)	52.30" (1,328.42mm)	19.51" (495.55mm)	125th Driest	Driest since: 1983	2022
Jun 1981–May 1984 36-Month	71.81" (1,823.97mm)	52.30" (1,328.42mm)	19.51" (495.55mm)	1st Wettest	Wettest to Date	1984
Jun 1980–May 1984 48-Month	85.80" (2,179.32mm)	69.56" (1,766.82mm)	16.24" (412.50mm)	119th Driest	Driest since: 1982	2015
Jun 1980–May 1984 48-Month	85.80" (2,179.32mm)	69.56" (1,766.82mm)	16.24" (412.50mm)	6th Wettest	Wettest since: 1983	1998
Jun 1979–May 1984 60-Month	108.23" (2,749.04mm)	86.83" (2,205.48mm)	21.40" (543.56mm)	121st Driest	Driest since: 1983	1933
Jun 1979–May 1984 60-Month	108.23" (2,749.04mm)	86.83" (2,205.48mm)	21.40" (543.56mm)	3rd Wettest	Wettest to Date	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings