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 1987

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
April 1987 1-Month	1.46" (37.08mm)	2.52" (64.01mm)	-1.06" (-26.93mm)	1st Driest	Driest since: 1987	1987
April 1987 1-Month	1.46" (37.08mm)	2.52" (64.01mm)	-1.06" (-26.93mm)	128th Wettest	Wettest since: 1986	1957
Mar–Apr 1987 2-Month	4.13" (104.90mm)	5.03" (127.76mm)	-0.90" (-22.86mm)	11th Driest	Driest since: 1971	1910
Mar–Apr 1987 2-Month	4.13" (104.90mm)	5.03" (127.76mm)	-0.90" (-22.86mm)	118th Wettest	Wettest since: 1986	1973
Feb–Apr 1987 3-Month	6.46" (164.08mm)	7.16" (181.86mm)	-0.70" (-17.78mm)	23rd Driest	Driest since: 1972	1910
Feb–Apr 1987 3-Month	6.46" (164.08mm)	7.16" (181.86mm)	-0.70" (-17.78mm)	106th Wettest	Wettest since: 1986	1983
Jan–Apr 1987 4-Month	8.63" (219.20mm)	9.47" (240.54mm)	-0.84" (-21.34mm)	26th Driest	Driest since: 1986	1910
Jan–Apr 1987 4-Month	8.63" (219.20mm)	9.47" (240.54mm)	-0.84" (-21.34mm)	103rd Wettest	Wettest since: 1984	1998
Dec 1986–Apr 1987 5-Month	10.63" (270.00mm)	11.82" (300.23mm)	-1.19" (-30.23mm)	21st Driest	Driest since: 1986	1931
Dec 1986–Apr 1987 5-Month	10.63" (270.00mm)	11.82" (300.23mm)	-1.19" (-30.23mm)	107th Wettest	Wettest since: 1984	1983
Nov 1986–Apr 1987 6-Month	13.57" (344.68mm)	14.05" (356.87mm)	-0.48" (-12.19mm)	51st Driest	Driest since: 1986	1977
	13.57" (344.68mm)	14.05" (356.87mm)	-0.48" (-12.19mm)	77th Wettest	Wettest since: 1984	1983
	Ties: 1950
Oct 1986–Apr 1987 7-Month	16.38" (416.05mm)	16.22" (411.99mm)	0.16" (4.06mm)	73rd Driest	Driest since: 1981	1981
Oct 1986–Apr 1987 7-Month	16.38" (416.05mm)	16.22" (411.99mm)	0.16" (4.06mm)	55th Wettest	Wettest since: 1986	1983
Sep 1986–Apr 1987 8-Month	19.97" (507.24mm)	18.71" (475.23mm)	1.26" (32.01mm)	99th Driest	Driest since: 1986	1918
Sep 1986–Apr 1987 8-Month	19.97" (507.24mm)	18.71" (475.23mm)	1.26" (32.01mm)	29th Wettest	Wettest since: 1984	2019
Aug 1986–Apr 1987 9-Month	22.79" (578.87mm)	21.33" (541.78mm)	1.46" (37.09mm)	102nd Driest	Driest since: 1986	1918
Aug 1986–Apr 1987 9-Month	22.79" (578.87mm)	21.33" (541.78mm)	1.46" (37.09mm)	26th Wettest	Wettest since: 1984	2019
Jul 1986–Apr 1987 10-Month	25.54" (648.72mm)	24.12" (612.65mm)	1.42" (36.07mm)	97th Driest	Driest since: 1986	1931
	25.54" (648.72mm)	24.12" (612.65mm)	1.42" (36.07mm)	31st Wettest	Wettest since: 1984	2019
	Ties: 1980
Jun 1986–Apr 1987 11-Month	28.57" (725.68mm)	27.04" (686.82mm)	1.53" (38.86mm)	97th Driest	Driest since: 1986	1931
Jun 1986–Apr 1987 11-Month	28.57" (725.68mm)	27.04" (686.82mm)	1.53" (38.86mm)	31st Wettest	Wettest since: 1984	2019
May 1986–Apr 1987 12-Month	31.52" (800.61mm)	29.95" (760.73mm)	1.57" (39.88mm)	96th Driest	Driest since: 1986	1918
	31.52" (800.61mm)	29.95" (760.73mm)	1.57" (39.88mm)	32nd Wettest	Wettest since: 1984	2019
	Ties: 1999
Nov 1985–Apr 1987 18-Month	45.01" (1,143.25mm)	44.02" (1,118.11mm)	0.99" (25.14mm)	82nd Driest	Driest since: 1986	1931
Nov 1985–Apr 1987 18-Month	45.01" (1,143.25mm)	44.02" (1,118.11mm)	0.99" (25.14mm)	45th Wettest	Wettest since: 1985	2020
May 1985–Apr 1987 24-Month	62.01" (1,575.05mm)	59.92" (1,521.97mm)	2.09" (53.08mm)	90th Driest	Driest since: 1986	1955
May 1985–Apr 1987 24-Month	62.01" (1,575.05mm)	59.92" (1,521.97mm)	2.09" (53.08mm)	37th Wettest	Wettest since: 1985	2020
May 1984–Apr 1987 36-Month	92.22" (2,342.39mm)	89.88" (2,282.95mm)	2.34" (59.44mm)	82nd Driest	Driest since: 1982	1955
May 1984–Apr 1987 36-Month	92.22" (2,342.39mm)	89.88" (2,282.95mm)	2.34" (59.44mm)	44th Wettest	Wettest since: 1986	2020
May 1983–Apr 1987 48-Month	124.48" (3,161.79mm)	119.77" (3,042.16mm)	4.71" (119.63mm)	100th Driest	Driest since: 1982	1956
May 1983–Apr 1987 48-Month	124.48" (3,161.79mm)	119.77" (3,042.16mm)	4.71" (119.63mm)	25th Wettest	Wettest since: 1986	2019
May 1982–Apr 1987 60-Month	159.90" (4,061.46mm)	149.63" (3,800.60mm)	10.27" (260.86mm)	114th Driest	Driest since: 1985	1957
May 1982–Apr 1987 60-Month	159.90" (4,061.46mm)	149.63" (3,800.60mm)	10.27" (260.86mm)	10th Wettest	Wettest since: 1986	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published January 2023, retrieved on January 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings