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 1912

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1912 1-Month	1.11" (28.19mm)	0.92" (23.37mm)	0.19" (4.82mm)	89th Driest	Driest since: 1911	1924
	1.11" (28.19mm)	0.92" (23.37mm)	0.19" (4.82mm)	40th Wettest	Wettest since: 1908	1998
	Ties: 1993
Apr–May 1912 2-Month	3.27" (83.06mm)	2.26" (57.40mm)	1.01" (25.66mm)	105th Driest	Driest since: 1911	1909
Apr–May 1912 2-Month	3.27" (83.06mm)	2.26" (57.40mm)	1.01" (25.66mm)	24th Wettest	Wettest since: 1906	1896
Mar–May 1912 3-Month	6.55" (166.37mm)	4.59" (116.59mm)	1.96" (49.78mm)	109th Driest	Driest since: 1911	2008
Mar–May 1912 3-Month	6.55" (166.37mm)	4.59" (116.59mm)	1.96" (49.78mm)	20th Wettest	Wettest since: 1907	1995
Feb–May 1912 4-Month	7.15" (181.61mm)	7.31" (185.67mm)	-0.16" (-4.06mm)	71st Driest	Driest since: 1910	1997
Feb–May 1912 4-Month	7.15" (181.61mm)	7.31" (185.67mm)	-0.16" (-4.06mm)	58th Wettest	Wettest since: 1911	1998
Jan–May 1912 5-Month	8.94" (227.08mm)	10.29" (261.37mm)	-1.35" (-34.29mm)	52nd Driest	Driest since: 1910	2022
Jan–May 1912 5-Month	8.94" (227.08mm)	10.29" (261.37mm)	-1.35" (-34.29mm)	77th Wettest	Wettest since: 1911	1998
Dec 1911–May 1912 6-Month	10.31" (261.87mm)	12.84" (326.14mm)	-2.53" (-64.27mm)	37th Driest	Driest since: 1898	1924
Dec 1911–May 1912 6-Month	10.31" (261.87mm)	12.84" (326.14mm)	-2.53" (-64.27mm)	91st Wettest	Wettest since: 1911	1995
Nov 1911–May 1912 7-Month	10.88" (276.35mm)	14.71" (373.63mm)	-3.83" (-97.28mm)	23rd Driest	Driest since: 1898	1977
Nov 1911–May 1912 7-Month	10.88" (276.35mm)	14.71" (373.63mm)	-3.83" (-97.28mm)	105th Wettest	Wettest since: 1911	1995
Oct 1911–May 1912 8-Month	11.34" (288.04mm)	15.74" (399.80mm)	-4.40" (-111.76mm)	17th Driest	Driest since: 1912	1977
Oct 1911–May 1912 8-Month	11.34" (288.04mm)	15.74" (399.80mm)	-4.40" (-111.76mm)	111th Wettest	Wettest since: 1911	1983
Sep 1911–May 1912 9-Month	11.82" (300.23mm)	16.23" (412.24mm)	-4.41" (-112.01mm)	17th Driest	Driest since: 1912	2021
Sep 1911–May 1912 9-Month	11.82" (300.23mm)	16.23" (412.24mm)	-4.41" (-112.01mm)	111th Wettest	Wettest since: 1911	1983
Aug 1911–May 1912 10-Month	11.84" (300.74mm)	16.62" (422.15mm)	-4.78" (-121.41mm)	15th Driest	Driest since: 1912	2021
Aug 1911–May 1912 10-Month	11.84" (300.74mm)	16.62" (422.15mm)	-4.78" (-121.41mm)	113th Wettest	Wettest since: 1911	1983
Jul 1911–May 1912 11-Month	12.21" (310.13mm)	16.95" (430.53mm)	-4.74" (-120.40mm)	15th Driest	Driest since: 1912	2021
Jul 1911–May 1912 11-Month	12.21" (310.13mm)	16.95" (430.53mm)	-4.74" (-120.40mm)	113th Wettest	Wettest since: 1911	1983
Jun 1911–May 1912 12-Month	12.65" (321.31mm)	17.44" (442.98mm)	-4.79" (-121.67mm)	13th Driest	Driest since: 1912	2021
Jun 1911–May 1912 12-Month	12.65" (321.31mm)	17.44" (442.98mm)	-4.79" (-121.67mm)	115th Wettest	Wettest since: 1911	1983
Dec 1910–May 1912 18-Month	28.82" (732.03mm)	30.25" (768.35mm)	-1.43" (-36.32mm)	55th Driest	Driest since: 1900	1977
Dec 1910–May 1912 18-Month	28.82" (732.03mm)	30.25" (768.35mm)	-1.43" (-36.32mm)	72nd Wettest	Wettest since: 1911	1983
Jun 1910–May 1912 24-Month	32.59" (827.79mm)	34.89" (886.21mm)	-2.30" (-58.42mm)	48th Driest	Driest since: 1900	2022
Jun 1910–May 1912 24-Month	32.59" (827.79mm)	34.89" (886.21mm)	-2.30" (-58.42mm)	79th Wettest	Wettest since: 1911	1983
Jun 1909–May 1912 36-Month	49.75" (1,263.65mm)	52.30" (1,328.42mm)	-2.55" (-64.77mm)	54th Driest	Driest since: 1900	2022
Jun 1909–May 1912 36-Month	49.75" (1,263.65mm)	52.30" (1,328.42mm)	-2.55" (-64.77mm)	72nd Wettest	Wettest since: 1911	1984
Jun 1908–May 1912 48-Month	70.52" (1,791.21mm)	69.56" (1,766.82mm)	0.96" (24.39mm)	78th Driest	Driest since: 1903	2015
Jun 1908–May 1912 48-Month	70.52" (1,791.21mm)	69.56" (1,766.82mm)	0.96" (24.39mm)	47th Wettest	Wettest since: 1911	1998
Jun 1907–May 1912 60-Month	86.18" (2,188.97mm)	86.83" (2,205.48mm)	-0.65" (-16.51mm)	71st Driest	Driest since: 1903	1933
Jun 1907–May 1912 60-Month	86.18" (2,188.97mm)	86.83" (2,205.48mm)	-0.65" (-16.51mm)	53rd Wettest	Wettest since: 1911	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published November 2022, retrieved on December 1, 2022 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings