Regional Rankings

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Month:

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Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. 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 1973

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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 1973 1-Month	0.54" (13.72mm)	0.92" (23.37mm)	-0.38" (-9.65mm)	38th Driest	Driest since: 1972	1924
	0.54" (13.72mm)	0.92" (23.37mm)	-0.38" (-9.65mm)	91st Wettest	Wettest since: 1971	1998
	Ties: 1983, 2014
Apr–May 1973 2-Month	1.07" (27.18mm)	2.26" (57.40mm)	-1.19" (-30.22mm)	12th Driest	Driest since: 1970	1909
Apr–May 1973 2-Month	1.07" (27.18mm)	2.26" (57.40mm)	-1.19" (-30.22mm)	117th Wettest	Wettest since: 1972	1896
Mar–May 1973 3-Month	3.81" (96.77mm)	4.59" (116.59mm)	-0.78" (-19.82mm)	53rd Driest	Driest since: 1972	2008
Mar–May 1973 3-Month	3.81" (96.77mm)	4.59" (116.59mm)	-0.78" (-19.82mm)	76th Wettest	Wettest since: 1971	1995
Feb–May 1973 4-Month	7.53" (191.26mm)	7.31" (185.67mm)	0.22" (5.59mm)	77th Driest	Driest since: 1972	1997
Feb–May 1973 4-Month	7.53" (191.26mm)	7.31" (185.67mm)	0.22" (5.59mm)	52nd Wettest	Wettest since: 1969	1998
Jan–May 1973 5-Month	11.64" (295.66mm)	10.29" (261.37mm)	1.35" (34.29mm)	92nd Driest	Driest since: 1972	2022
Jan–May 1973 5-Month	11.64" (295.66mm)	10.29" (261.37mm)	1.35" (34.29mm)	37th Wettest	Wettest since: 1969	1998
Dec 1972–May 1973 6-Month	13.74" (349.00mm)	12.84" (326.14mm)	0.90" (22.86mm)	85th Driest	Driest since: 1972	1924
Dec 1972–May 1973 6-Month	13.74" (349.00mm)	12.84" (326.14mm)	0.90" (22.86mm)	43rd Wettest	Wettest since: 1969	1995
Nov 1972–May 1973 7-Month	16.78" (426.21mm)	14.71" (373.63mm)	2.07" (52.58mm)	93rd Driest	Driest since: 1972	1977
Nov 1972–May 1973 7-Month	16.78" (426.21mm)	14.71" (373.63mm)	2.07" (52.58mm)	35th Wettest	Wettest since: 1969	1995
Oct 1972–May 1973 8-Month	18.59" (472.19mm)	15.74" (399.80mm)	2.85" (72.39mm)	99th Driest	Driest since: 1972	1977
	18.59" (472.19mm)	15.74" (399.80mm)	2.85" (72.39mm)	29th Wettest	Wettest since: 1969	1983
	Ties: 1974
Sep 1972–May 1973 9-Month	19.46" (494.28mm)	16.23" (412.24mm)	3.23" (82.04mm)	103rd Driest	Driest since: 1972	2021
	19.46" (494.28mm)	16.23" (412.24mm)	3.23" (82.04mm)	25th Wettest	Wettest since: 1969	1983
	Ties: 1940
Aug 1972–May 1973 10-Month	19.80" (502.92mm)	16.62" (422.15mm)	3.18" (80.77mm)	103rd Driest	Driest since: 1972	2021
Aug 1972–May 1973 10-Month	19.80" (502.92mm)	16.62" (422.15mm)	3.18" (80.77mm)	25th Wettest	Wettest since: 1969	1983
Jul 1972–May 1973 11-Month	19.85" (504.19mm)	16.95" (430.53mm)	2.90" (73.66mm)	100th Driest	Driest since: 1972	2021
Jul 1972–May 1973 11-Month	19.85" (504.19mm)	16.95" (430.53mm)	2.90" (73.66mm)	28th Wettest	Wettest since: 1969	1983
Jun 1972–May 1973 12-Month	20.58" (522.73mm)	17.44" (442.98mm)	3.14" (79.75mm)	102nd Driest	Driest since: 1972	2021
Jun 1972–May 1973 12-Month	20.58" (522.73mm)	17.44" (442.98mm)	3.14" (79.75mm)	26th Wettest	Wettest since: 1969	1983
Dec 1971–May 1973 18-Month	29.14" (740.16mm)	30.25" (768.35mm)	-1.11" (-28.19mm)	62nd Driest	Driest since: 1972	1977
Dec 1971–May 1973 18-Month	29.14" (740.16mm)	30.25" (768.35mm)	-1.11" (-28.19mm)	65th Wettest	Wettest since: 1971	1983
Jun 1971–May 1973 24-Month	33.14" (841.76mm)	34.89" (886.21mm)	-1.75" (-44.45mm)	54th Driest	Driest since: 1972	2022
Jun 1971–May 1973 24-Month	33.14" (841.76mm)	34.89" (886.21mm)	-1.75" (-44.45mm)	73rd Wettest	Wettest since: 1971	1983
Jun 1970–May 1973 36-Month	51.94" (1,319.28mm)	52.30" (1,328.42mm)	-0.36" (-9.14mm)	70th Driest	Driest since: 1972	2022
Jun 1970–May 1973 36-Month	51.94" (1,319.28mm)	52.30" (1,328.42mm)	-0.36" (-9.14mm)	56th Wettest	Wettest since: 1971	1984
Jun 1969–May 1973 48-Month	69.28" (1,759.71mm)	69.56" (1,766.82mm)	-0.28" (-7.11mm)	70th Driest	Driest since: 1968	2015
Jun 1969–May 1973 48-Month	69.28" (1,759.71mm)	69.56" (1,766.82mm)	-0.28" (-7.11mm)	55th Wettest	Wettest since: 1972	1998
Jun 1968–May 1973 60-Month	93.22" (2,367.79mm)	86.83" (2,205.48mm)	6.39" (162.31mm)	96th Driest	Driest since: 1972	1933
Jun 1968–May 1973 60-Month	93.22" (2,367.79mm)	86.83" (2,205.48mm)	6.39" (162.31mm)	28th Wettest	Wettest since: 1971	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2023, retrieved on April 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings