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 1968

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1968 1-Month	3.33" (84.58mm)	2.91" (73.91mm)	0.42" (10.67mm)	105th Driest	Driest since: 1967	1934
May 1968 1-Month	3.33" (84.58mm)	2.91" (73.91mm)	0.42" (10.67mm)	24th Wettest	Wettest since: 1957	2019
Apr–May 1968 2-Month	5.79" (147.07mm)	5.43" (137.92mm)	0.36" (9.15mm)	88th Driest	Driest since: 1967	1934
Apr–May 1968 2-Month	5.79" (147.07mm)	5.43" (137.92mm)	0.36" (9.15mm)	41st Wettest	Wettest since: 1957	1957
Mar–May 1968 3-Month	7.95" (201.93mm)	7.94" (201.68mm)	0.01" (0.25mm)	62nd Driest	Driest since: 1967	1925
	7.95" (201.93mm)	7.94" (201.68mm)	0.01" (0.25mm)	67th Wettest	Wettest since: 1964	1957, 1991
	Ties: 1981
Feb–May 1968 4-Month	9.43" (239.52mm)	10.07" (255.78mm)	-0.64" (-16.26mm)	33rd Driest	Driest since: 1967	1925
Feb–May 1968 4-Month	9.43" (239.52mm)	10.07" (255.78mm)	-0.64" (-16.26mm)	96th Wettest	Wettest since: 1965	2019
Jan–May 1968 5-Month	11.60" (294.64mm)	12.39" (314.71mm)	-0.79" (-20.07mm)	33rd Driest	Driest since: 1967	1934
	11.60" (294.64mm)	12.39" (314.71mm)	-0.79" (-20.07mm)	96th Wettest	Wettest since: 1965	2019
	Ties: 1901
Dec 1967–May 1968 6-Month	14.66" (372.36mm)	14.73" (374.14mm)	-0.07" (-1.78mm)	61st Driest	Driest since: 1967	1931
Dec 1967–May 1968 6-Month	14.66" (372.36mm)	14.73" (374.14mm)	-0.07" (-1.78mm)	67th Wettest	Wettest since: 1965	2019
Nov 1967–May 1968 7-Month	16.27" (413.26mm)	16.96" (430.78mm)	-0.69" (-17.52mm)	45th Driest	Driest since: 1967	1934
	16.27" (413.26mm)	16.96" (430.78mm)	-0.69" (-17.52mm)	83rd Wettest	Wettest since: 1965	1983
	Ties: 2012
Oct 1967–May 1968 8-Month	18.61" (472.69mm)	19.13" (485.90mm)	-0.52" (-13.21mm)	47th Driest	Driest since: 1967	1934
Oct 1967–May 1968 8-Month	18.61" (472.69mm)	19.13" (485.90mm)	-0.52" (-13.21mm)	81st Wettest	Wettest since: 1965	2019
Sep 1967–May 1968 9-Month	21.10" (535.94mm)	21.62" (549.15mm)	-0.52" (-13.21mm)	48th Driest	Driest since: 1967	1934
Sep 1967–May 1968 9-Month	21.10" (535.94mm)	21.62" (549.15mm)	-0.52" (-13.21mm)	80th Wettest	Wettest since: 1965	2019
Aug 1967–May 1968 10-Month	23.61" (599.69mm)	24.25" (615.95mm)	-0.64" (-16.26mm)	41st Driest	Driest since: 1967	1918
Aug 1967–May 1968 10-Month	23.61" (599.69mm)	24.25" (615.95mm)	-0.64" (-16.26mm)	87th Wettest	Wettest since: 1965	2019
Jul 1967–May 1968 11-Month	26.50" (673.10mm)	27.03" (686.56mm)	-0.53" (-13.46mm)	47th Driest	Driest since: 1967	1931
Jul 1967–May 1968 11-Month	26.50" (673.10mm)	27.03" (686.56mm)	-0.53" (-13.46mm)	81st Wettest	Wettest since: 1965	2019
Jun 1967–May 1968 12-Month	30.08" (764.03mm)	29.95" (760.73mm)	0.13" (3.30mm)	62nd Driest	Driest since: 1967	1934
	30.08" (764.03mm)	29.95" (760.73mm)	0.13" (3.30mm)	66th Wettest	Wettest since: 1962	2019
	Ties: 2007
Dec 1966–May 1968 18-Month	43.74" (1,111.00mm)	44.70" (1,135.38mm)	-0.96" (-24.38mm)	42nd Driest	Driest since: 1967	1931
Dec 1966–May 1968 18-Month	43.74" (1,111.00mm)	44.70" (1,135.38mm)	-0.96" (-24.38mm)	85th Wettest	Wettest since: 1966	2019
Jun 1966–May 1968 24-Month	57.62" (1,463.55mm)	59.92" (1,521.97mm)	-2.30" (-58.42mm)	27th Driest	Driest since: 1967	1931
	57.62" (1,463.55mm)	59.92" (1,521.97mm)	-2.30" (-58.42mm)	100th Wettest	Wettest since: 1966	2020
	Ties: 1902
Jun 1965–May 1968 36-Month	86.57" (2,198.88mm)	89.88" (2,282.95mm)	-3.31" (-84.07mm)	26th Driest	Driest since: 1967	1955
Jun 1965–May 1968 36-Month	86.57" (2,198.88mm)	89.88" (2,282.95mm)	-3.31" (-84.07mm)	100th Wettest	Wettest since: 1963	2019
Jun 1964–May 1968 48-Month	116.36" (2,955.54mm)	119.78" (3,042.41mm)	-3.42" (-86.87mm)	30th Driest	Driest since: 1967	1956
Jun 1964–May 1968 48-Month	116.36" (2,955.54mm)	119.78" (3,042.41mm)	-3.42" (-86.87mm)	95th Wettest	Wettest since: 1963	2019
Jun 1963–May 1968 60-Month	143.99" (3,657.35mm)	149.64" (3,800.86mm)	-5.65" (-143.51mm)	13th Driest	Driest since: 1967	1957
Jun 1963–May 1968 60-Month	143.99" (3,657.35mm)	149.64" (3,800.86mm)	-5.65" (-143.51mm)	111th Wettest	Wettest since: 1966	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published January 2023, retrieved on February 4, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings