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 2007

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Wettest/Driest Since	Record
April 2007 1-Month	2.49" (63.25mm)	2.52" (64.01mm)	-0.03" (-0.76mm)	59th Driest	Driest since: 2002	1987
	2.49" (63.25mm)	2.52" (64.01mm)	-0.03" (-0.76mm)	71st Wettest	Wettest since: 2006	1957
	Ties: 1955, 1966, 1990
Mar–Apr 2007 2-Month	4.80" (121.92mm)	5.03" (127.76mm)	-0.23" (-5.84mm)	52nd Driest	Driest since: 2004	1910
	4.80" (121.92mm)	5.03" (127.76mm)	-0.23" (-5.84mm)	78th Wettest	Wettest since: 2006	1973
	Ties: 1978, 1996
Feb–Apr 2007 3-Month	6.56" (166.62mm)	7.16" (181.86mm)	-0.60" (-15.24mm)	28th Driest	Driest since: 2006	1910
Feb–Apr 2007 3-Month	6.56" (166.62mm)	7.16" (181.86mm)	-0.60" (-15.24mm)	102nd Wettest	Wettest since: 2005	1983
Jan–Apr 2007 4-Month	8.78" (223.01mm)	9.48" (240.79mm)	-0.70" (-17.78mm)	34th Driest	Driest since: 2002	1910
	8.78" (223.01mm)	9.48" (240.79mm)	-0.70" (-17.78mm)	96th Wettest	Wettest since: 2006	1998
	Ties: 1956
Dec 2006–Apr 2007 5-Month	11.35" (288.29mm)	11.82" (300.23mm)	-0.47" (-11.94mm)	46th Driest	Driest since: 2006	1931
Dec 2006–Apr 2007 5-Month	11.35" (288.29mm)	11.82" (300.23mm)	-0.47" (-11.94mm)	83rd Wettest	Wettest since: 2005	1983
Nov 2006–Apr 2007 6-Month	13.81" (350.77mm)	14.05" (356.87mm)	-0.24" (-6.10mm)	64th Driest	Driest since: 2006	1977
Nov 2006–Apr 2007 6-Month	13.81" (350.77mm)	14.05" (356.87mm)	-0.24" (-6.10mm)	65th Wettest	Wettest since: 2005	1983
Oct 2006–Apr 2007 7-Month	16.71" (424.43mm)	16.22" (411.99mm)	0.49" (12.44mm)	85th Driest	Driest since: 2006	1981
	16.71" (424.43mm)	16.22" (411.99mm)	0.49" (12.44mm)	44th Wettest	Wettest since: 2005	1983
	Ties: 1900, 1937
Sep 2006–Apr 2007 8-Month	19.51" (495.55mm)	18.71" (475.23mm)	0.80" (20.32mm)	90th Driest	Driest since: 2006	1918
Sep 2006–Apr 2007 8-Month	19.51" (495.55mm)	18.71" (475.23mm)	0.80" (20.32mm)	39th Wettest	Wettest since: 2005	2019
Aug 2006–Apr 2007 9-Month	22.31" (566.67mm)	21.33" (541.78mm)	0.98" (24.89mm)	93rd Driest	Driest since: 2006	1918
Aug 2006–Apr 2007 9-Month	22.31" (566.67mm)	21.33" (541.78mm)	0.98" (24.89mm)	36th Wettest	Wettest since: 2005	2019
Jul 2006–Apr 2007 10-Month	24.77" (629.16mm)	24.12" (612.65mm)	0.65" (16.51mm)	83rd Driest	Driest since: 2006	1931
Jul 2006–Apr 2007 10-Month	24.77" (629.16mm)	24.12" (612.65mm)	0.65" (16.51mm)	46th Wettest	Wettest since: 2005	2019
Jun 2006–Apr 2007 11-Month	27.33" (694.18mm)	27.04" (686.82mm)	0.29" (7.36mm)	68th Driest	Driest since: 2006	1931
Jun 2006–Apr 2007 11-Month	27.33" (694.18mm)	27.04" (686.82mm)	0.29" (7.36mm)	61st Wettest	Wettest since: 2005	2019
May 2006–Apr 2007 12-Month	29.62" (752.35mm)	29.95" (760.73mm)	-0.33" (-8.38mm)	50th Driest	Driest since: 2006	1918
	29.62" (752.35mm)	29.95" (760.73mm)	-0.33" (-8.38mm)	79th Wettest	Wettest since: 2005	2019
	Ties: 1901
Nov 2005–Apr 2007 18-Month	43.11" (1,094.99mm)	44.02" (1,118.11mm)	-0.91" (-23.12mm)	45th Driest	Driest since: 2003	1931
Nov 2005–Apr 2007 18-Month	43.11" (1,094.99mm)	44.02" (1,118.11mm)	-0.91" (-23.12mm)	83rd Wettest	Wettest since: 2006	2020
May 2005–Apr 2007 24-Month	59.01" (1,498.85mm)	59.92" (1,521.97mm)	-0.91" (-23.12mm)	50th Driest	Driest since: 2003	1955
May 2005–Apr 2007 24-Month	59.01" (1,498.85mm)	59.92" (1,521.97mm)	-0.91" (-23.12mm)	78th Wettest	Wettest since: 2006	2020
May 2004–Apr 2007 36-Month	93.00" (2,362.20mm)	89.88" (2,282.95mm)	3.12" (79.25mm)	93rd Driest	Driest since: 2004	1955
May 2004–Apr 2007 36-Month	93.00" (2,362.20mm)	89.88" (2,282.95mm)	3.12" (79.25mm)	34th Wettest	Wettest since: 2006	2020
May 2003–Apr 2007 48-Month	123.43" (3,135.12mm)	119.77" (3,042.16mm)	3.66" (92.96mm)	95th Driest	Driest since: 2005	1956
May 2003–Apr 2007 48-Month	123.43" (3,135.12mm)	119.77" (3,042.16mm)	3.66" (92.96mm)	31st Wettest	Wettest since: 2006	2019
May 2002–Apr 2007 60-Month	153.31" (3,894.07mm)	149.63" (3,800.60mm)	3.68" (93.47mm)	83rd Driest	Driest since: 2006	1957
May 2002–Apr 2007 60-Month	153.31" (3,894.07mm)	149.63" (3,800.60mm)	3.68" (93.47mm)	42nd Wettest	Wettest since: 2001	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published May 2023, retrieved on May 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings