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 1957

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1957 1-Month	4.24" (107.70mm)	2.91" (73.91mm)	1.33" (33.79mm)	126th Driest	Driest since: 1956	1934
May 1957 1-Month	4.24" (107.70mm)	2.91" (73.91mm)	1.33" (33.79mm)	3rd Wettest	Wettest to Date	2019
Apr–May 1957 2-Month	7.89" (200.41mm)	5.43" (137.92mm)	2.46" (62.49mm)	128th Driest	Driest since: 1956	1934
Apr–May 1957 2-Month	7.89" (200.41mm)	5.43" (137.92mm)	2.46" (62.49mm)	1st Wettest	Wettest to Date	1957
Mar–May 1957 3-Month	10.40" (264.16mm)	7.94" (201.68mm)	2.46" (62.48mm)	128th Driest	Driest since: 1956	1925
	10.40" (264.16mm)	7.94" (201.68mm)	2.46" (62.48mm)	1st Wettest	Wettest to Date	1957, 1991
	Ties: 1991
Feb–May 1957 4-Month	12.48" (316.99mm)	10.07" (255.78mm)	2.41" (61.21mm)	126th Driest	Driest since: 1956	1925
Feb–May 1957 4-Month	12.48" (316.99mm)	10.07" (255.78mm)	2.41" (61.21mm)	3rd Wettest	Wettest to Date	2019
Jan–May 1957 5-Month	14.61" (371.09mm)	12.39" (314.71mm)	2.22" (56.38mm)	121st Driest	Driest since: 1956	1934
Jan–May 1957 5-Month	14.61" (371.09mm)	12.39" (314.71mm)	2.22" (56.38mm)	8th Wettest	Wettest to Date	2019
Dec 1956–May 1957 6-Month	16.61" (421.89mm)	14.73" (374.14mm)	1.88" (47.75mm)	115th Driest	Driest since: 1956	1931
Dec 1956–May 1957 6-Month	16.61" (421.89mm)	14.73" (374.14mm)	1.88" (47.75mm)	13th Wettest	Wettest to Date	2019
Nov 1956–May 1957 7-Month	17.97" (456.44mm)	16.96" (430.78mm)	1.01" (25.66mm)	95th Driest	Driest since: 1956	1934
Nov 1956–May 1957 7-Month	17.97" (456.44mm)	16.96" (430.78mm)	1.01" (25.66mm)	33rd Wettest	Wettest since: 1953	1983
Oct 1956–May 1957 8-Month	19.97" (507.24mm)	19.13" (485.90mm)	0.84" (21.34mm)	86th Driest	Driest since: 1956	1934
Oct 1956–May 1957 8-Month	19.97" (507.24mm)	19.13" (485.90mm)	0.84" (21.34mm)	42nd Wettest	Wettest since: 1952	2019
Sep 1956–May 1957 9-Month	21.41" (543.81mm)	21.62" (549.15mm)	-0.21" (-5.34mm)	59th Driest	Driest since: 1956	1934
Sep 1956–May 1957 9-Month	21.41" (543.81mm)	21.62" (549.15mm)	-0.21" (-5.34mm)	69th Wettest	Wettest since: 1952	2019
Aug 1956–May 1957 10-Month	23.62" (599.95mm)	24.25" (615.95mm)	-0.63" (-16.00mm)	42nd Driest	Driest since: 1956	1918
	23.62" (599.95mm)	24.25" (615.95mm)	-0.63" (-16.00mm)	86th Wettest	Wettest since: 1952	2019
	Ties: 1976, 1994
Jul 1956–May 1957 11-Month	26.40" (670.56mm)	27.03" (686.56mm)	-0.63" (-16.00mm)	41st Driest	Driest since: 1956	1931
	26.40" (670.56mm)	27.03" (686.56mm)	-0.63" (-16.00mm)	87th Wettest	Wettest since: 1952	2019
	Ties: 1971
Jun 1956–May 1957 12-Month	28.61" (726.69mm)	29.95" (760.73mm)	-1.34" (-34.04mm)	36th Driest	Driest since: 1956	1934
Jun 1956–May 1957 12-Month	28.61" (726.69mm)	29.95" (760.73mm)	-1.34" (-34.04mm)	92nd Wettest	Wettest since: 1952	2019
Dec 1955–May 1957 18-Month	42.23" (1,072.64mm)	44.70" (1,135.38mm)	-2.47" (-62.74mm)	25th Driest	Driest since: 1956	1931
	42.23" (1,072.64mm)	44.70" (1,135.38mm)	-2.47" (-62.74mm)	102nd Wettest	Wettest since: 1953	2019
	Ties: 2000
Jun 1955–May 1957 24-Month	56.43" (1,433.32mm)	59.92" (1,521.97mm)	-3.49" (-88.65mm)	19th Driest	Driest since: 1956	1931
Jun 1955–May 1957 24-Month	56.43" (1,433.32mm)	59.92" (1,521.97mm)	-3.49" (-88.65mm)	108th Wettest	Wettest since: 1953	2020
Jun 1954–May 1957 36-Month	82.60" (2,098.04mm)	89.88" (2,282.95mm)	-7.28" (-184.91mm)	5th Driest	Driest since: 1956	1955
Jun 1954–May 1957 36-Month	82.60" (2,098.04mm)	89.88" (2,282.95mm)	-7.28" (-184.91mm)	121st Wettest	Wettest since: 1954	2019
Jun 1953–May 1957 48-Month	108.66" (2,759.96mm)	119.78" (3,042.41mm)	-11.12" (-282.45mm)	2nd Driest	Driest since: 1956	1956
Jun 1953–May 1957 48-Month	108.66" (2,759.96mm)	119.78" (3,042.41mm)	-11.12" (-282.45mm)	123rd Wettest	Wettest since: 1955	2019
Jun 1952–May 1957 60-Month	136.07" (3,456.18mm)	149.64" (3,800.86mm)	-13.57" (-344.68mm)	1st Driest	Driest since: 1957	1957
Jun 1952–May 1957 60-Month	136.07" (3,456.18mm)	149.64" (3,800.86mm)	-13.57" (-344.68mm)	123rd Wettest	Wettest since: 1956	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published January 2023, retrieved on January 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings