National Rankings

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Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

Precipitation Rankings, May 1933

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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 1933 1-Month	3.39" (86.11mm)	2.91" (73.91mm)	0.48" (12.20mm)	110th Driest	Driest since: 1932	1934
	3.39" (86.11mm)	2.91" (73.91mm)	0.48" (12.20mm)	19th Wettest	Wettest since: 1929	2019
	Ties: 1943
Apr–May 1933 2-Month	5.93" (150.62mm)	5.43" (137.92mm)	0.50" (12.70mm)	96th Driest	Driest since: 1932	1934
	5.93" (150.62mm)	5.43" (137.92mm)	0.50" (12.70mm)	33rd Wettest	Wettest since: 1929	1957
	Ties: 1938
Mar–May 1933 3-Month	8.40" (213.36mm)	7.94" (201.68mm)	0.46" (11.68mm)	92nd Driest	Driest since: 1932	1925
	8.40" (213.36mm)	7.94" (201.68mm)	0.46" (11.68mm)	37th Wettest	Wettest since: 1929	1957, 1991
	Ties: 1943
Feb–May 1933 4-Month	10.34" (262.64mm)	10.07" (255.78mm)	0.27" (6.86mm)	81st Driest	Driest since: 1932	1925
Feb–May 1933 4-Month	10.34" (262.64mm)	10.07" (255.78mm)	0.27" (6.86mm)	48th Wettest	Wettest since: 1929	2019
Jan–May 1933 5-Month	12.59" (319.79mm)	12.39" (314.71mm)	0.20" (5.08mm)	74th Driest	Driest since: 1932	1934
Jan–May 1933 5-Month	12.59" (319.79mm)	12.39" (314.71mm)	0.20" (5.08mm)	55th Wettest	Wettest since: 1929	2019
Dec 1932–May 1933 6-Month	15.51" (393.95mm)	14.73" (374.14mm)	0.78" (19.81mm)	87th Driest	Driest since: 1931	1931
Dec 1932–May 1933 6-Month	15.51" (393.95mm)	14.73" (374.14mm)	0.78" (19.81mm)	41st Wettest	Wettest since: 1932	2019
Nov 1932–May 1933 7-Month	17.53" (445.26mm)	16.96" (430.78mm)	0.57" (14.48mm)	83rd Driest	Driest since: 1931	1934
Nov 1932–May 1933 7-Month	17.53" (445.26mm)	16.96" (430.78mm)	0.57" (14.48mm)	45th Wettest	Wettest since: 1932	1983
Oct 1932–May 1933 8-Month	20.01" (508.25mm)	19.13" (485.90mm)	0.88" (22.35mm)	87th Driest	Driest since: 1931	1934
Oct 1932–May 1933 8-Month	20.01" (508.25mm)	19.13" (485.90mm)	0.88" (22.35mm)	41st Wettest	Wettest since: 1932	2019
Sep 1932–May 1933 9-Month	22.17" (563.12mm)	21.62" (549.15mm)	0.55" (13.97mm)	78th Driest	Driest since: 1931	1934
Sep 1932–May 1933 9-Month	22.17" (563.12mm)	21.62" (549.15mm)	0.55" (13.97mm)	50th Wettest	Wettest since: 1932	2019
Aug 1932–May 1933 10-Month	25.02" (635.51mm)	24.25" (615.95mm)	0.77" (19.56mm)	82nd Driest	Driest since: 1932	1918
	25.02" (635.51mm)	24.25" (615.95mm)	0.77" (19.56mm)	46th Wettest	Wettest since: 1927	2019
	Ties: 1945
Jul 1932–May 1933 11-Month	27.62" (701.55mm)	27.03" (686.56mm)	0.59" (14.99mm)	77th Driest	Driest since: 1931	1931
Jul 1932–May 1933 11-Month	27.62" (701.55mm)	27.03" (686.56mm)	0.59" (14.99mm)	51st Wettest	Wettest since: 1932	2019
Jun 1932–May 1933 12-Month	30.68" (779.27mm)	29.95" (760.73mm)	0.73" (18.54mm)	81st Driest	Driest since: 1932	1934
Jun 1932–May 1933 12-Month	30.68" (779.27mm)	29.95" (760.73mm)	0.73" (18.54mm)	47th Wettest	Wettest since: 1929	2019
Dec 1931–May 1933 18-Month	46.41" (1,178.81mm)	44.70" (1,135.38mm)	1.71" (43.43mm)	92nd Driest	Driest since: 1932	1931
Dec 1931–May 1933 18-Month	46.41" (1,178.81mm)	44.70" (1,135.38mm)	1.71" (43.43mm)	35th Wettest	Wettest since: 1920	2019
Jun 1931–May 1933 24-Month	60.48" (1,536.19mm)	59.92" (1,521.97mm)	0.56" (14.22mm)	68th Driest	Driest since: 1932	1931
Jun 1931–May 1933 24-Month	60.48" (1,536.19mm)	59.92" (1,521.97mm)	0.56" (14.22mm)	59th Wettest	Wettest since: 1929	2020
Jun 1930–May 1933 36-Month	84.83" (2,154.68mm)	89.88" (2,282.95mm)	-5.05" (-128.27mm)	16th Driest	Driest since: 1932	1955
Jun 1930–May 1933 36-Month	84.83" (2,154.68mm)	89.88" (2,282.95mm)	-5.05" (-128.27mm)	110th Wettest	Wettest since: 1930	2019
Jun 1929–May 1933 48-Month	112.65" (2,861.31mm)	119.78" (3,042.41mm)	-7.13" (-181.10mm)	7th Driest	Driest since: 1926	1956
Jun 1929–May 1933 48-Month	112.65" (2,861.31mm)	119.78" (3,042.41mm)	-7.13" (-181.10mm)	118th Wettest	Wettest since: 1932	2019
Jun 1928–May 1933 60-Month	145.01" (3,683.25mm)	149.64" (3,800.86mm)	-4.63" (-117.61mm)	24th Driest	Driest since: 1932	1957
Jun 1928–May 1933 60-Month	145.01" (3,683.25mm)	149.64" (3,800.86mm)	-4.63" (-117.61mm)	100th Wettest	Wettest since: 1931	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2023, retrieved on March 24, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings