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 1956

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1956 1-Month	2.60" (66.04mm)	2.91" (73.91mm)	-0.31" (-7.87mm)	32nd Driest	Driest since: 1951	1934
May 1956 1-Month	2.60" (66.04mm)	2.91" (73.91mm)	-0.31" (-7.87mm)	97th Wettest	Wettest since: 1955	2019
Apr–May 1956 2-Month	4.67" (118.62mm)	5.43" (137.92mm)	-0.76" (-19.30mm)	16th Driest	Driest since: 1939	1934
Apr–May 1956 2-Month	4.67" (118.62mm)	5.43" (137.92mm)	-0.76" (-19.30mm)	113th Wettest	Wettest since: 1955	1957
Mar–May 1956 3-Month	6.49" (164.85mm)	7.94" (201.68mm)	-1.45" (-36.83mm)	8th Driest	Driest since: 1939	1925
Mar–May 1956 3-Month	6.49" (164.85mm)	7.94" (201.68mm)	-1.45" (-36.83mm)	121st Wettest	Wettest since: 1955	1957, 1991
Feb–May 1956 4-Month	9.11" (231.39mm)	10.07" (255.78mm)	-0.96" (-24.39mm)	22nd Driest	Driest since: 1954	1925
Feb–May 1956 4-Month	9.11" (231.39mm)	10.07" (255.78mm)	-0.96" (-24.39mm)	107th Wettest	Wettest since: 1955	2019
Jan–May 1956 5-Month	11.38" (289.05mm)	12.39" (314.71mm)	-1.01" (-25.66mm)	23rd Driest	Driest since: 1955	1934
Jan–May 1956 5-Month	11.38" (289.05mm)	12.39" (314.71mm)	-1.01" (-25.66mm)	106th Wettest	Wettest since: 1953	2019
Dec 1955–May 1956 6-Month	13.62" (345.95mm)	14.73" (374.14mm)	-1.11" (-28.19mm)	29th Driest	Driest since: 1955	1931
	13.62" (345.95mm)	14.73" (374.14mm)	-1.11" (-28.19mm)	99th Wettest	Wettest since: 1954	2019
	Ties: 1936
Nov 1955–May 1956 7-Month	15.54" (394.72mm)	16.96" (430.78mm)	-1.42" (-36.06mm)	21st Driest	Driest since: 1955	1934
Nov 1955–May 1956 7-Month	15.54" (394.72mm)	16.96" (430.78mm)	-1.42" (-36.06mm)	107th Wettest	Wettest since: 1954	1983
Oct 1955–May 1956 8-Month	17.58" (446.53mm)	19.13" (485.90mm)	-1.55" (-39.37mm)	23rd Driest	Driest since: 1955	1934
Oct 1955–May 1956 8-Month	17.58" (446.53mm)	19.13" (485.90mm)	-1.55" (-39.37mm)	105th Wettest	Wettest since: 1953	2019
Sep 1955–May 1956 9-Month	19.69" (500.13mm)	21.62" (549.15mm)	-1.93" (-49.02mm)	19th Driest	Driest since: 1955	1934
Sep 1955–May 1956 9-Month	19.69" (500.13mm)	21.62" (549.15mm)	-1.93" (-49.02mm)	109th Wettest	Wettest since: 1953	2019
Aug 1955–May 1956 10-Month	22.43" (569.72mm)	24.25" (615.95mm)	-1.82" (-46.23mm)	24th Driest	Driest since: 1955	1918
Aug 1955–May 1956 10-Month	22.43" (569.72mm)	24.25" (615.95mm)	-1.82" (-46.23mm)	104th Wettest	Wettest since: 1953	2019
Jul 1955–May 1956 11-Month	25.35" (643.89mm)	27.03" (686.56mm)	-1.68" (-42.67mm)	27th Driest	Driest since: 1955	1931
Jul 1955–May 1956 11-Month	25.35" (643.89mm)	27.03" (686.56mm)	-1.68" (-42.67mm)	101st Wettest	Wettest since: 1952	2019
Jun 1955–May 1956 12-Month	27.82" (706.63mm)	29.95" (760.73mm)	-2.13" (-54.10mm)	18th Driest	Driest since: 1955	1934
	27.82" (706.63mm)	29.95" (760.73mm)	-2.13" (-54.10mm)	110th Wettest	Wettest since: 1952	2019
	Ties: 1930
Dec 1954–May 1956 18-Month	41.12" (1,044.45mm)	44.70" (1,135.38mm)	-3.58" (-90.93mm)	15th Driest	Driest since: 1955	1931
Dec 1954–May 1956 18-Month	41.12" (1,044.45mm)	44.70" (1,135.38mm)	-3.58" (-90.93mm)	112th Wettest	Wettest since: 1954	2019
Jun 1954–May 1956 24-Month	53.99" (1,371.35mm)	59.92" (1,521.97mm)	-5.93" (-150.62mm)	6th Driest	Driest since: 1955	1931
	53.99" (1,371.35mm)	59.92" (1,521.97mm)	-5.93" (-150.62mm)	121st Wettest	Wettest since: 1953	2020
	Ties: 1935
Jun 1953–May 1956 36-Month	80.05" (2,033.27mm)	89.88" (2,282.95mm)	-9.83" (-249.68mm)	2nd Driest	Driest since: 1955	1955
Jun 1953–May 1956 36-Month	80.05" (2,033.27mm)	89.88" (2,282.95mm)	-9.83" (-249.68mm)	124th Wettest	Wettest since: 1954	2019
Jun 1952–May 1956 48-Month	107.46" (2,729.48mm)	119.78" (3,042.41mm)	-12.32" (-312.93mm)	1st Driest	Driest to Date	1956
Jun 1952–May 1956 48-Month	107.46" (2,729.48mm)	119.78" (3,042.41mm)	-12.32" (-312.93mm)	124th Wettest	Wettest since: 1955	2019
Jun 1951–May 1956 60-Month	139.24" (3,536.70mm)	149.64" (3,800.86mm)	-10.40" (-264.16mm)	4th Driest	Driest since: 1935	1957
Jun 1951–May 1956 60-Month	139.24" (3,536.70mm)	149.64" (3,800.86mm)	-10.40" (-264.16mm)	120th Wettest	Wettest since: 1955	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2023, retrieved on March 26, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings