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 1933

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1933 1-Month	1.38" (35.05mm)	0.92" (23.37mm)	0.46" (11.68mm)	100th Driest	Driest since: 1932	1924
May 1933 1-Month	1.38" (35.05mm)	0.92" (23.37mm)	0.46" (11.68mm)	29th Wettest	Wettest since: 1930	1998
Apr–May 1933 2-Month	2.01" (51.05mm)	2.26" (57.40mm)	-0.25" (-6.35mm)	61st Driest	Driest since: 1931	1909
Apr–May 1933 2-Month	2.01" (51.05mm)	2.26" (57.40mm)	-0.25" (-6.35mm)	68th Wettest	Wettest since: 1932	1896
Mar–May 1933 3-Month	3.70" (93.98mm)	4.59" (116.59mm)	-0.89" (-22.61mm)	49th Driest	Driest since: 1932	2008
Mar–May 1933 3-Month	3.70" (93.98mm)	4.59" (116.59mm)	-0.89" (-22.61mm)	80th Wettest	Wettest since: 1930	1995
Feb–May 1933 4-Month	4.34" (110.24mm)	7.31" (185.67mm)	-2.97" (-75.43mm)	19th Driest	Driest since: 1929	1997
	4.34" (110.24mm)	7.31" (185.67mm)	-2.97" (-75.43mm)	110th Wettest	Wettest since: 1932	1998
	Ties: 1929
Jan–May 1933 5-Month	8.50" (215.90mm)	10.29" (261.37mm)	-1.79" (-45.47mm)	48th Driest	Driest since: 1932	2022
	8.50" (215.90mm)	10.29" (261.37mm)	-1.79" (-45.47mm)	81st Wettest	Wettest since: 1930	1998
	Ties: 1990
Dec 1932–May 1933 6-Month	10.42" (264.67mm)	12.84" (326.14mm)	-2.42" (-61.47mm)	40th Driest	Driest since: 1931	1924
Dec 1932–May 1933 6-Month	10.42" (264.67mm)	12.84" (326.14mm)	-2.42" (-61.47mm)	88th Wettest	Wettest since: 1932	1995
Nov 1932–May 1933 7-Month	11.12" (282.45mm)	14.71" (373.63mm)	-3.59" (-91.18mm)	26th Driest	Driest since: 1931	1977
Nov 1932–May 1933 7-Month	11.12" (282.45mm)	14.71" (373.63mm)	-3.59" (-91.18mm)	102nd Wettest	Wettest since: 1932	1995
Oct 1932–May 1933 8-Month	11.46" (291.08mm)	15.74" (399.80mm)	-4.28" (-108.72mm)	20th Driest	Driest since: 1931	1977
Oct 1932–May 1933 8-Month	11.46" (291.08mm)	15.74" (399.80mm)	-4.28" (-108.72mm)	108th Wettest	Wettest since: 1932	1983
Sep 1932–May 1933 9-Month	11.68" (296.67mm)	16.23" (412.24mm)	-4.55" (-115.57mm)	16th Driest	Driest since: 1931	2021
Sep 1932–May 1933 9-Month	11.68" (296.67mm)	16.23" (412.24mm)	-4.55" (-115.57mm)	112th Wettest	Wettest since: 1932	1983
Aug 1932–May 1933 10-Month	11.86" (301.24mm)	16.62" (422.15mm)	-4.76" (-120.91mm)	16th Driest	Driest since: 1931	2021
Aug 1932–May 1933 10-Month	11.86" (301.24mm)	16.62" (422.15mm)	-4.76" (-120.91mm)	112th Wettest	Wettest since: 1932	1983
Jul 1932–May 1933 11-Month	12.14" (308.36mm)	16.95" (430.53mm)	-4.81" (-122.17mm)	14th Driest	Driest since: 1931	2021
Jul 1932–May 1933 11-Month	12.14" (308.36mm)	16.95" (430.53mm)	-4.81" (-122.17mm)	114th Wettest	Wettest since: 1932	1983
Jun 1932–May 1933 12-Month	12.72" (323.09mm)	17.44" (442.98mm)	-4.72" (-119.89mm)	14th Driest	Driest since: 1931	2021
	12.72" (323.09mm)	17.44" (442.98mm)	-4.72" (-119.89mm)	114th Wettest	Wettest since: 1932	1983
	Ties: 2012
Dec 1931–May 1933 18-Month	26.42" (671.07mm)	30.25" (768.35mm)	-3.83" (-97.28mm)	39th Driest	Driest since: 1932	1977
Dec 1931–May 1933 18-Month	26.42" (671.07mm)	30.25" (768.35mm)	-3.83" (-97.28mm)	88th Wettest	Wettest since: 1928	1983
Jun 1931–May 1933 24-Month	31.56" (801.62mm)	34.89" (886.21mm)	-3.33" (-84.59mm)	43rd Driest	Driest since: 1932	2022
Jun 1931–May 1933 24-Month	31.56" (801.62mm)	34.89" (886.21mm)	-3.33" (-84.59mm)	84th Wettest	Wettest since: 1928	1983
Jun 1930–May 1933 36-Month	42.52" (1,080.01mm)	52.30" (1,328.42mm)	-9.78" (-248.41mm)	15th Driest	Driest since: 1931	2022
Jun 1930–May 1933 36-Month	42.52" (1,080.01mm)	52.30" (1,328.42mm)	-9.78" (-248.41mm)	111th Wettest	Wettest since: 1932	1984
Jun 1929–May 1933 48-Month	57.60" (1,463.04mm)	69.56" (1,766.82mm)	-11.96" (-303.78mm)	14th Driest	Driest since: 1932	2015
Jun 1929–May 1933 48-Month	57.60" (1,463.04mm)	69.56" (1,766.82mm)	-11.96" (-303.78mm)	111th Wettest	Wettest since: 1930	1998
Jun 1928–May 1933 60-Month	68.36" (1,736.34mm)	86.83" (2,205.48mm)	-18.47" (-469.14mm)	1st Driest	Driest since: 1933	1933
Jun 1928–May 1933 60-Month	68.36" (1,736.34mm)	86.83" (2,205.48mm)	-18.47" (-469.14mm)	123rd Wettest	Wettest since: 1932	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings