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 1971

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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
April 1971 1-Month	1.86" (47.24mm)	2.52" (64.01mm)	-0.66" (-16.77mm)	8th Driest	Driest since: 1946	1987
April 1971 1-Month	1.86" (47.24mm)	2.52" (64.01mm)	-0.66" (-16.77mm)	121st Wettest	Wettest since: 1970	1957
Mar–Apr 1971 2-Month	3.94" (100.08mm)	5.03" (127.76mm)	-1.09" (-27.68mm)	6th Driest	Driest since: 1956	1910
Mar–Apr 1971 2-Month	3.94" (100.08mm)	5.03" (127.76mm)	-1.09" (-27.68mm)	123rd Wettest	Wettest since: 1970	1973
Feb–Apr 1971 3-Month	6.31" (160.27mm)	7.16" (181.86mm)	-0.85" (-21.59mm)	16th Driest	Driest since: 1968	1910
	6.31" (160.27mm)	7.16" (181.86mm)	-0.85" (-21.59mm)	113th Wettest	Wettest since: 1970	1983
	Ties: 1924, 1947
Jan–Apr 1971 4-Month	8.34" (211.84mm)	9.48" (240.79mm)	-1.14" (-28.95mm)	16th Driest	Driest since: 1968	1910
Jan–Apr 1971 4-Month	8.34" (211.84mm)	9.48" (240.79mm)	-1.14" (-28.95mm)	113th Wettest	Wettest since: 1970	1998
Dec 1970–Apr 1971 5-Month	10.56" (268.22mm)	11.82" (300.23mm)	-1.26" (-32.01mm)	17th Driest	Driest since: 1963	1931
	10.56" (268.22mm)	11.82" (300.23mm)	-1.26" (-32.01mm)	111th Wettest	Wettest since: 1970	1983
	Ties: 1926
Nov 1970–Apr 1971 6-Month	12.76" (324.10mm)	14.05" (356.87mm)	-1.29" (-32.77mm)	18th Driest	Driest since: 1967	1977
Nov 1970–Apr 1971 6-Month	12.76" (324.10mm)	14.05" (356.87mm)	-1.29" (-32.77mm)	110th Wettest	Wettest since: 1970	1983
Oct 1970–Apr 1971 7-Month	15.64" (397.26mm)	16.22" (411.99mm)	-0.58" (-14.73mm)	45th Driest	Driest since: 1968	1981
Oct 1970–Apr 1971 7-Month	15.64" (397.26mm)	16.22" (411.99mm)	-0.58" (-14.73mm)	83rd Wettest	Wettest since: 1970	1983
Sep 1970–Apr 1971 8-Month	18.70" (474.98mm)	18.71" (475.23mm)	-0.01" (-0.25mm)	65th Driest	Driest since: 1968	1918
Sep 1970–Apr 1971 8-Month	18.70" (474.98mm)	18.71" (475.23mm)	-0.01" (-0.25mm)	63rd Wettest	Wettest since: 1970	2019
Aug 1970–Apr 1971 9-Month	21.07" (535.18mm)	21.33" (541.78mm)	-0.26" (-6.60mm)	50th Driest	Driest since: 1970	1918
	21.07" (535.18mm)	21.33" (541.78mm)	-0.26" (-6.60mm)	78th Wettest	Wettest since: 1969	2019
	Ties: 1901, 2004
Jul 1970–Apr 1971 10-Month	23.48" (596.39mm)	24.12" (612.65mm)	-0.64" (-16.26mm)	44th Driest	Driest since: 1968	1931
Jul 1970–Apr 1971 10-Month	23.48" (596.39mm)	24.12" (612.65mm)	-0.64" (-16.26mm)	84th Wettest	Wettest since: 1970	2019
Jun 1970–Apr 1971 11-Month	26.25" (666.75mm)	27.04" (686.82mm)	-0.79" (-20.07mm)	41st Driest	Driest since: 1967	1931
Jun 1970–Apr 1971 11-Month	26.25" (666.75mm)	27.04" (686.82mm)	-0.79" (-20.07mm)	87th Wettest	Wettest since: 1970	2019
May 1970–Apr 1971 12-Month	28.86" (733.04mm)	29.95" (760.73mm)	-1.09" (-27.69mm)	37th Driest	Driest since: 1967	1918
May 1970–Apr 1971 12-Month	28.86" (733.04mm)	29.95" (760.73mm)	-1.09" (-27.69mm)	91st Wettest	Wettest since: 1970	2019
Nov 1969–Apr 1971 18-Month	42.57" (1,081.28mm)	44.02" (1,118.11mm)	-1.45" (-36.83mm)	35th Driest	Driest since: 1968	1931
Nov 1969–Apr 1971 18-Month	42.57" (1,081.28mm)	44.02" (1,118.11mm)	-1.45" (-36.83mm)	92nd Wettest	Wettest since: 1970	2020
May 1969–Apr 1971 24-Month	58.94" (1,497.08mm)	59.92" (1,521.97mm)	-0.98" (-24.89mm)	49th Driest	Driest since: 1968	1955
May 1969–Apr 1971 24-Month	58.94" (1,497.08mm)	59.92" (1,521.97mm)	-0.98" (-24.89mm)	78th Wettest	Wettest since: 1970	2020
May 1968–Apr 1971 36-Month	90.79" (2,306.07mm)	89.88" (2,282.95mm)	0.91" (23.12mm)	74th Driest	Driest since: 1969	1955
	90.79" (2,306.07mm)	89.88" (2,282.95mm)	0.91" (23.12mm)	52nd Wettest	Wettest since: 1970	2020
	Ties: 1962
May 1967–Apr 1971 48-Month	120.50" (3,060.70mm)	119.77" (3,042.16mm)	0.73" (18.54mm)	65th Driest	Driest since: 1970	1956
May 1967–Apr 1971 48-Month	120.50" (3,060.70mm)	119.77" (3,042.16mm)	0.73" (18.54mm)	60th Wettest	Wettest since: 1961	2019
May 1966–Apr 1971 60-Month	147.32" (3,741.93mm)	149.63" (3,800.60mm)	-2.31" (-58.67mm)	43rd Driest	Driest since: 1969	1957
May 1966–Apr 1971 60-Month	147.32" (3,741.93mm)	149.63" (3,800.60mm)	-2.31" (-58.67mm)	81st Wettest	Wettest since: 1970	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2023, retrieved on April 2, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings