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 1920

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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 1920 1-Month	2.79" (70.87mm)	2.91" (73.91mm)	-0.12" (-3.04mm)	52nd Driest	Driest since: 1918	1934
May 1920 1-Month	2.79" (70.87mm)	2.91" (73.91mm)	-0.12" (-3.04mm)	77th Wettest	Wettest since: 1919	2019
Apr–May 1920 2-Month	6.09" (154.69mm)	5.43" (137.92mm)	0.66" (16.77mm)	103rd Driest	Driest since: 1919	1934
Apr–May 1920 2-Month	6.09" (154.69mm)	5.43" (137.92mm)	0.66" (16.77mm)	26th Wettest	Wettest since: 1915	1957
Mar–May 1920 3-Month	8.87" (225.30mm)	7.94" (201.68mm)	0.93" (23.62mm)	106th Driest	Driest since: 1919	1925
Mar–May 1920 3-Month	8.87" (225.30mm)	7.94" (201.68mm)	0.93" (23.62mm)	23rd Wettest	Wettest since: 1912	1957, 1991
Feb–May 1920 4-Month	10.48" (266.19mm)	10.07" (255.78mm)	0.41" (10.41mm)	85th Driest	Driest since: 1918	1925
Feb–May 1920 4-Month	10.48" (266.19mm)	10.07" (255.78mm)	0.41" (10.41mm)	44th Wettest	Wettest since: 1919	2019
Jan–May 1920 5-Month	12.69" (322.33mm)	12.39" (314.71mm)	0.30" (7.62mm)	80th Driest	Driest since: 1918	1934
	12.69" (322.33mm)	12.39" (314.71mm)	0.30" (7.62mm)	49th Wettest	Wettest since: 1919	2019
	Ties: 1923
Dec 1919–May 1920 6-Month	14.50" (368.30mm)	14.73" (374.14mm)	-0.23" (-5.84mm)	57th Driest	Driest since: 1918	1931
	14.50" (368.30mm)	14.73" (374.14mm)	-0.23" (-5.84mm)	71st Wettest	Wettest since: 1919	2019
	Ties: 1961
Nov 1919–May 1920 7-Month	17.30" (439.42mm)	16.96" (430.78mm)	0.34" (8.64mm)	76th Driest	Driest since: 1918	1934
Nov 1919–May 1920 7-Month	17.30" (439.42mm)	16.96" (430.78mm)	0.34" (8.64mm)	52nd Wettest	Wettest since: 1919	1983
Oct 1919–May 1920 8-Month	20.75" (527.05mm)	19.13" (485.90mm)	1.62" (41.15mm)	102nd Driest	Driest since: 1918	1934
Oct 1919–May 1920 8-Month	20.75" (527.05mm)	19.13" (485.90mm)	1.62" (41.15mm)	26th Wettest	Wettest since: 1919	2019
Sep 1919–May 1920 9-Month	23.09" (586.49mm)	21.62" (549.15mm)	1.47" (37.34mm)	98th Driest	Driest since: 1918	1934
Sep 1919–May 1920 9-Month	23.09" (586.49mm)	21.62" (549.15mm)	1.47" (37.34mm)	30th Wettest	Wettest since: 1919	2019
Aug 1919–May 1920 10-Month	25.57" (649.48mm)	24.25" (615.95mm)	1.32" (33.53mm)	96th Driest	Driest since: 1918	1918
Aug 1919–May 1920 10-Month	25.57" (649.48mm)	24.25" (615.95mm)	1.32" (33.53mm)	32nd Wettest	Wettest since: 1919	2019
Jul 1919–May 1920 11-Month	28.61" (726.69mm)	27.03" (686.56mm)	1.58" (40.13mm)	97th Driest	Driest since: 1919	1931
Jul 1919–May 1920 11-Month	28.61" (726.69mm)	27.03" (686.56mm)	1.58" (40.13mm)	31st Wettest	Wettest since: 1916	2019
Jun 1919–May 1920 12-Month	31.58" (802.13mm)	29.95" (760.73mm)	1.63" (41.40mm)	93rd Driest	Driest since: 1919	1934
Jun 1919–May 1920 12-Month	31.58" (802.13mm)	29.95" (760.73mm)	1.63" (41.40mm)	35th Wettest	Wettest since: 1916	2019
Dec 1918–May 1920 18-Month	47.11" (1,196.59mm)	44.70" (1,135.38mm)	2.41" (61.21mm)	96th Driest	Driest since: 1919	1931
Dec 1918–May 1920 18-Month	47.11" (1,196.59mm)	44.70" (1,135.38mm)	2.41" (61.21mm)	31st Wettest	Wettest since: 1916	2019
Jun 1918–May 1920 24-Month	61.84" (1,570.74mm)	59.92" (1,521.97mm)	1.92" (48.77mm)	89th Driest	Driest since: 1919	1931
Jun 1918–May 1920 24-Month	61.84" (1,570.74mm)	59.92" (1,521.97mm)	1.92" (48.77mm)	38th Wettest	Wettest since: 1916	2020
Jun 1917–May 1920 36-Month	86.78" (2,204.21mm)	89.88" (2,282.95mm)	-3.10" (-78.74mm)	28th Driest	Driest since: 1919	1955
Jun 1917–May 1920 36-Month	86.78" (2,204.21mm)	89.88" (2,282.95mm)	-3.10" (-78.74mm)	98th Wettest	Wettest since: 1917	2019
Jun 1916–May 1920 48-Month	115.34" (2,929.64mm)	119.78" (3,042.41mm)	-4.44" (-112.77mm)	25th Driest	Driest since: 1913	1956
Jun 1916–May 1920 48-Month	115.34" (2,929.64mm)	119.78" (3,042.41mm)	-4.44" (-112.77mm)	100th Wettest	Wettest since: 1919	2019
Jun 1915–May 1920 60-Month	147.53" (3,747.26mm)	149.64" (3,800.86mm)	-2.11" (-53.60mm)	41st Driest	Driest since: 1919	1957
Jun 1915–May 1920 60-Month	147.53" (3,747.26mm)	149.64" (3,800.86mm)	-2.11" (-53.60mm)	83rd Wettest	Wettest since: 1917	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published May 2023, retrieved on May 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings