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, April 1931

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
April 1931 1-Month	2.07" (52.58mm)	2.52" (64.01mm)	-0.45" (-11.43mm)	18th Driest	Driest since: 1930	1987
	2.07" (52.58mm)	2.52" (64.01mm)	-0.45" (-11.43mm)	111th Wettest	Wettest since: 1929	1957
	Ties: 1956
Mar–Apr 1931 2-Month	4.38" (111.25mm)	5.03" (127.76mm)	-0.65" (-16.51mm)	20th Driest	Driest since: 1930	1910
Mar–Apr 1931 2-Month	4.38" (111.25mm)	5.03" (127.76mm)	-0.65" (-16.51mm)	109th Wettest	Wettest since: 1929	1973
Feb–Apr 1931 3-Month	6.22" (157.99mm)	7.16" (181.86mm)	-0.94" (-23.87mm)	14th Driest	Driest since: 1930	1910
Feb–Apr 1931 3-Month	6.22" (157.99mm)	7.16" (181.86mm)	-0.94" (-23.87mm)	115th Wettest	Wettest since: 1929	1983
Jan–Apr 1931 4-Month	7.78" (197.61mm)	9.48" (240.79mm)	-1.70" (-43.18mm)	5th Driest	Driest since: 1925	1910
Jan–Apr 1931 4-Month	7.78" (197.61mm)	9.48" (240.79mm)	-1.70" (-43.18mm)	124th Wettest	Wettest since: 1930	1998
Dec 1930–Apr 1931 5-Month	9.06" (230.12mm)	11.82" (300.23mm)	-2.76" (-70.11mm)	1st Driest	Driest since: 1931	1931
Dec 1930–Apr 1931 5-Month	9.06" (230.12mm)	11.82" (300.23mm)	-2.76" (-70.11mm)	127th Wettest	Wettest since: 1930	1983
Nov 1930–Apr 1931 6-Month	11.34" (288.04mm)	14.05" (356.87mm)	-2.71" (-68.83mm)	4th Driest	Driest since: 1931	1977
Nov 1930–Apr 1931 6-Month	11.34" (288.04mm)	14.05" (356.87mm)	-2.71" (-68.83mm)	124th Wettest	Wettest since: 1930	1983
Oct 1930–Apr 1931 7-Month	13.65" (346.71mm)	16.22" (411.99mm)	-2.57" (-65.28mm)	6th Driest	Driest since: 1925	1981
Oct 1930–Apr 1931 7-Month	13.65" (346.71mm)	16.22" (411.99mm)	-2.57" (-65.28mm)	122nd Wettest	Wettest since: 1930	1983
Sep 1930–Apr 1931 8-Month	15.98" (405.89mm)	18.71" (475.23mm)	-2.73" (-69.34mm)	6th Driest	Driest since: 1918	1918
Sep 1930–Apr 1931 8-Month	15.98" (405.89mm)	18.71" (475.23mm)	-2.73" (-69.34mm)	122nd Wettest	Wettest since: 1930	2019
Aug 1930–Apr 1931 9-Month	17.94" (455.68mm)	21.33" (541.78mm)	-3.39" (-86.10mm)	3rd Driest	Driest since: 1918	1918
Aug 1930–Apr 1931 9-Month	17.94" (455.68mm)	21.33" (541.78mm)	-3.39" (-86.10mm)	125th Wettest	Wettest since: 1930	2019
Jul 1930–Apr 1931 10-Month	19.73" (501.14mm)	24.12" (612.65mm)	-4.39" (-111.51mm)	1st Driest	Driest since: 1931	1931
Jul 1930–Apr 1931 10-Month	19.73" (501.14mm)	24.12" (612.65mm)	-4.39" (-111.51mm)	127th Wettest	Wettest since: 1930	2019
Jun 1930–Apr 1931 11-Month	22.06" (560.32mm)	27.04" (686.82mm)	-4.98" (-126.50mm)	1st Driest	Driest since: 1931	1931
Jun 1930–Apr 1931 11-Month	22.06" (560.32mm)	27.04" (686.82mm)	-4.98" (-126.50mm)	127th Wettest	Wettest since: 1930	2019
May 1930–Apr 1931 12-Month	25.23" (640.84mm)	29.95" (760.73mm)	-4.72" (-119.89mm)	2nd Driest	Driest since: 1918	1918
May 1930–Apr 1931 12-Month	25.23" (640.84mm)	29.95" (760.73mm)	-4.72" (-119.89mm)	126th Wettest	Wettest since: 1930	2019
Nov 1929–Apr 1931 18-Month	37.53" (953.26mm)	44.02" (1,118.11mm)	-6.49" (-164.85mm)	1st Driest	Driest since: 1931	1931
Nov 1929–Apr 1931 18-Month	37.53" (953.26mm)	44.02" (1,118.11mm)	-6.49" (-164.85mm)	126th Wettest	Wettest since: 1930	2020
May 1929–Apr 1931 24-Month	53.39" (1,356.11mm)	59.92" (1,521.97mm)	-6.53" (-165.86mm)	2nd Driest	Driest since: 1931	1955
May 1929–Apr 1931 24-Month	53.39" (1,356.11mm)	59.92" (1,521.97mm)	-6.53" (-165.86mm)	125th Wettest	Wettest since: 1930	2020
May 1928–Apr 1931 36-Month	84.58" (2,148.33mm)	89.88" (2,282.95mm)	-5.30" (-134.62mm)	10th Driest	Driest since: 1926	1955
May 1928–Apr 1931 36-Month	84.58" (2,148.33mm)	89.88" (2,282.95mm)	-5.30" (-134.62mm)	116th Wettest	Wettest since: 1930	2020
May 1927–Apr 1931 48-Month	114.94" (2,919.48mm)	119.77" (3,042.16mm)	-4.83" (-122.68mm)	15th Driest	Driest since: 1926	1956
May 1927–Apr 1931 48-Month	114.94" (2,919.48mm)	119.77" (3,042.16mm)	-4.83" (-122.68mm)	110th Wettest	Wettest since: 1930	2019
May 1926–Apr 1931 60-Month	147.11" (3,736.59mm)	149.63" (3,800.60mm)	-2.52" (-64.01mm)	40th Driest	Driest since: 1928	1957
May 1926–Apr 1931 60-Month	147.11" (3,736.59mm)	149.63" (3,800.60mm)	-2.52" (-64.01mm)	84th Wettest	Wettest since: 1930	2020

Citing This Page

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