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, March 2021

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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
March 2021 1-Month	1.39" (35.31mm)	2.33" (59.18mm)	-0.94" (-23.87mm)	38th Driest	Driest since: 2015	1956
March 2021 1-Month	1.39" (35.31mm)	2.33" (59.18mm)	-0.94" (-23.87mm)	91st Wettest	Wettest since: 2020	1995
Feb–Mar 2021 2-Month	2.55" (64.77mm)	5.05" (128.27mm)	-2.50" (-63.50mm)	18th Driest	Driest since: 2015	1923
Feb–Mar 2021 2-Month	2.55" (64.77mm)	5.05" (128.27mm)	-2.50" (-63.50mm)	111th Wettest	Wettest since: 2020	1938
Jan–Mar 2021 3-Month	5.09" (129.29mm)	8.03" (203.96mm)	-2.94" (-74.67mm)	27th Driest	Driest since: 2020	2022
Jan–Mar 2021 3-Month	5.09" (129.29mm)	8.03" (203.96mm)	-2.94" (-74.67mm)	102nd Wettest	Wettest since: 2019	1995
Dec 2020–Mar 2021 4-Month	6.41" (162.81mm)	10.58" (268.73mm)	-4.17" (-105.92mm)	14th Driest	Driest since: 2014	1977
Dec 2020–Mar 2021 4-Month	6.41" (162.81mm)	10.58" (268.73mm)	-4.17" (-105.92mm)	114th Wettest	Wettest since: 2020	1907
Nov 2020–Mar 2021 5-Month	7.41" (188.21mm)	12.46" (316.48mm)	-5.05" (-128.27mm)	9th Driest	Driest since: 2014	1977
	7.41" (188.21mm)	12.46" (316.48mm)	-5.05" (-128.27mm)	119th Wettest	Wettest since: 2020	1983
	Ties: 1898
Oct 2020–Mar 2021 6-Month	7.46" (189.48mm)	13.48" (342.39mm)	-6.02" (-152.91mm)	3rd Driest	Driest since: 1977	1977
Oct 2020–Mar 2021 6-Month	7.46" (189.48mm)	13.48" (342.39mm)	-6.02" (-152.91mm)	125th Wettest	Wettest since: 2020	1983
Sep 2020–Mar 2021 7-Month	7.51" (190.75mm)	13.98" (355.09mm)	-6.47" (-164.34mm)	2nd Driest	Driest since: 1977	1977
Sep 2020–Mar 2021 7-Month	7.51" (190.75mm)	13.98" (355.09mm)	-6.47" (-164.34mm)	126th Wettest	Wettest since: 2020	1983
Aug 2020–Mar 2021 8-Month	7.62" (193.55mm)	14.37" (365.00mm)	-6.75" (-171.45mm)	2nd Driest	Driest since: 1977	1977
Aug 2020–Mar 2021 8-Month	7.62" (193.55mm)	14.37" (365.00mm)	-6.75" (-171.45mm)	126th Wettest	Wettest since: 2020	1983
Jul 2020–Mar 2021 9-Month	7.69" (195.33mm)	14.69" (373.13mm)	-7.00" (-177.80mm)	1st Driest	Driest since: 2021	2021
Jul 2020–Mar 2021 9-Month	7.69" (195.33mm)	14.69" (373.13mm)	-7.00" (-177.80mm)	127th Wettest	Wettest since: 2020	1983
Jun 2020–Mar 2021 10-Month	8.01" (203.45mm)	15.19" (385.83mm)	-7.18" (-182.38mm)	1st Driest	Driest since: 2021	2021
Jun 2020–Mar 2021 10-Month	8.01" (203.45mm)	15.19" (385.83mm)	-7.18" (-182.38mm)	127th Wettest	Wettest since: 2020	1983
May 2020–Mar 2021 11-Month	8.98" (228.09mm)	16.11" (409.19mm)	-7.13" (-181.10mm)	2nd Driest	Driest since: 1977	1977
May 2020–Mar 2021 11-Month	8.98" (228.09mm)	16.11" (409.19mm)	-7.13" (-181.10mm)	126th Wettest	Wettest since: 2020	1983
Apr 2020–Mar 2021 12-Month	10.43" (264.92mm)	17.45" (443.23mm)	-7.02" (-178.31mm)	2nd Driest	Driest since: 1977	1977
Apr 2020–Mar 2021 12-Month	10.43" (264.92mm)	17.45" (443.23mm)	-7.02" (-178.31mm)	126th Wettest	Wettest since: 2020	1983
Oct 2019–Mar 2021 18-Month	19.57" (497.08mm)	30.93" (785.62mm)	-11.36" (-288.54mm)	3rd Driest	Driest since: 1977	1977
Oct 2019–Mar 2021 18-Month	19.57" (497.08mm)	30.93" (785.62mm)	-11.36" (-288.54mm)	124th Wettest	Wettest since: 2020	1983
Apr 2019–Mar 2021 24-Month	24.51" (622.55mm)	34.89" (886.21mm)	-10.38" (-263.66mm)	4th Driest	Driest since: 2015	2022
Apr 2019–Mar 2021 24-Month	24.51" (622.55mm)	34.89" (886.21mm)	-10.38" (-263.66mm)	123rd Wettest	Wettest since: 2020	1983
Apr 2018–Mar 2021 36-Month	45.33" (1,151.38mm)	52.29" (1,328.17mm)	-6.96" (-176.79mm)	33rd Driest	Driest since: 2016	2022
Apr 2018–Mar 2021 36-Month	45.33" (1,151.38mm)	52.29" (1,328.17mm)	-6.96" (-176.79mm)	93rd Wettest	Wettest since: 2020	1984
Apr 2017–Mar 2021 48-Month	58.81" (1,493.77mm)	69.54" (1,766.32mm)	-10.73" (-272.55mm)	18th Driest	Driest since: 2016	2015
Apr 2017–Mar 2021 48-Month	58.81" (1,493.77mm)	69.54" (1,766.32mm)	-10.73" (-272.55mm)	107th Wettest	Wettest since: 2020	1998
Apr 2016–Mar 2021 60-Month	84.12" (2,136.65mm)	86.83" (2,205.48mm)	-2.71" (-68.83mm)	60th Driest	Driest since: 2018	1933
Apr 2016–Mar 2021 60-Month	84.12" (2,136.65mm)	86.83" (2,205.48mm)	-2.71" (-68.83mm)	64th Wettest	Wettest since: 2020	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 5, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings