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, July 2012

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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
July 2012 1-Month	2.51" (63.75mm)	2.78" (70.61mm)	-0.27" (-6.86mm)	23rd Driest	Driest since: 2011	1930
	2.51" (63.75mm)	2.78" (70.61mm)	-0.27" (-6.86mm)	106th Wettest	Wettest since: 2010	1950, 1958
	Ties: 1917
Jun–Jul 2012 2-Month	4.75" (120.65mm)	5.70" (144.78mm)	-0.95" (-24.13mm)	11th Driest	Driest since: 1988	1930
Jun–Jul 2012 2-Month	4.75" (120.65mm)	5.70" (144.78mm)	-0.95" (-24.13mm)	118th Wettest	Wettest since: 2011	1928
May–Jul 2012 3-Month	7.25" (184.15mm)	8.62" (218.95mm)	-1.37" (-34.80mm)	9th Driest	Driest since: 1988	1988
May–Jul 2012 3-Month	7.25" (184.15mm)	8.62" (218.95mm)	-1.37" (-34.80mm)	120th Wettest	Wettest since: 2011	2015
Apr–Jul 2012 4-Month	9.48" (240.79mm)	11.13" (282.70mm)	-1.65" (-41.91mm)	7th Driest	Driest since: 1988	1934
Apr–Jul 2012 4-Month	9.48" (240.79mm)	11.13" (282.70mm)	-1.65" (-41.91mm)	122nd Wettest	Wettest since: 2011	2015
Mar–Jul 2012 5-Month	12.35" (313.69mm)	13.64" (346.46mm)	-1.29" (-32.77mm)	18th Driest	Driest since: 2006	1936
Mar–Jul 2012 5-Month	12.35" (313.69mm)	13.64" (346.46mm)	-1.29" (-32.77mm)	111th Wettest	Wettest since: 2011	1973
Feb–Jul 2012 6-Month	14.20" (360.68mm)	15.78" (400.81mm)	-1.58" (-40.13mm)	17th Driest	Driest since: 2006	1934
Feb–Jul 2012 6-Month	14.20" (360.68mm)	15.78" (400.81mm)	-1.58" (-40.13mm)	112th Wettest	Wettest since: 2011	2019
Jan–Jul 2012 7-Month	16.29" (413.77mm)	18.09" (459.49mm)	-1.80" (-45.72mm)	17th Driest	Driest since: 2006	1934
	16.29" (413.77mm)	18.09" (459.49mm)	-1.80" (-45.72mm)	112th Wettest	Wettest since: 2011	2019
	Ties: 2006
Dec 2011–Jul 2012 8-Month	18.55" (471.17mm)	20.44" (519.18mm)	-1.89" (-48.01mm)	18th Driest	Driest since: 2002	1931
Dec 2011–Jul 2012 8-Month	18.55" (471.17mm)	20.44" (519.18mm)	-1.89" (-48.01mm)	110th Wettest	Wettest since: 2011	2019
Nov 2011–Jul 2012 9-Month	21.02" (533.91mm)	22.66" (575.56mm)	-1.64" (-41.65mm)	26th Driest	Driest since: 2006	1934
Nov 2011–Jul 2012 9-Month	21.02" (533.91mm)	22.66" (575.56mm)	-1.64" (-41.65mm)	102nd Wettest	Wettest since: 2011	2019
Oct 2011–Jul 2012 10-Month	23.16" (588.26mm)	24.83" (630.68mm)	-1.67" (-42.42mm)	26th Driest	Driest since: 2002	1934
Oct 2011–Jul 2012 10-Month	23.16" (588.26mm)	24.83" (630.68mm)	-1.67" (-42.42mm)	102nd Wettest	Wettest since: 2011	2019
Sep 2011–Jul 2012 11-Month	25.64" (651.26mm)	27.33" (694.18mm)	-1.69" (-42.92mm)	27th Driest	Driest since: 2006	1934
Sep 2011–Jul 2012 11-Month	25.64" (651.26mm)	27.33" (694.18mm)	-1.69" (-42.92mm)	101st Wettest	Wettest since: 2011	2019
Aug 2011–Jul 2012 12-Month	27.98" (710.69mm)	29.95" (760.73mm)	-1.97" (-50.04mm)	23rd Driest	Driest since: 2002	1918
Aug 2011–Jul 2012 12-Month	27.98" (710.69mm)	29.95" (760.73mm)	-1.97" (-50.04mm)	105th Wettest	Wettest since: 2011	2019
Feb 2011–Jul 2012 18-Month	44.74" (1,136.40mm)	45.74" (1,161.80mm)	-1.00" (-25.40mm)	42nd Driest	Driest since: 2007	1931
Feb 2011–Jul 2012 18-Month	44.74" (1,136.40mm)	45.74" (1,161.80mm)	-1.00" (-25.40mm)	86th Wettest	Wettest since: 2011	2019
Aug 2010–Jul 2012 24-Month	58.32" (1,481.33mm)	59.92" (1,521.97mm)	-1.60" (-40.64mm)	40th Driest	Driest since: 2002	1918
Aug 2010–Jul 2012 24-Month	58.32" (1,481.33mm)	59.92" (1,521.97mm)	-1.60" (-40.64mm)	87th Wettest	Wettest since: 2011	2020
Aug 2009–Jul 2012 36-Month	91.99" (2,336.55mm)	89.88" (2,282.95mm)	2.11" (53.60mm)	81st Driest	Driest since: 2008	1956
Aug 2009–Jul 2012 36-Month	91.99" (2,336.55mm)	89.88" (2,282.95mm)	2.11" (53.60mm)	45th Wettest	Wettest since: 2011	2019
Aug 2008–Jul 2012 48-Month	122.76" (3,118.10mm)	119.78" (3,042.41mm)	2.98" (75.69mm)	87th Driest	Driest since: 2009	1956
Aug 2008–Jul 2012 48-Month	122.76" (3,118.10mm)	119.78" (3,042.41mm)	2.98" (75.69mm)	38th Wettest	Wettest since: 2011	2019
Aug 2007–Jul 2012 60-Month	153.16" (3,890.26mm)	149.64" (3,800.86mm)	3.52" (89.40mm)	82nd Driest	Driest since: 2009	1934
Aug 2007–Jul 2012 60-Month	153.16" (3,890.26mm)	149.64" (3,800.86mm)	3.52" (89.40mm)	42nd Wettest	Wettest since: 2011	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2023, retrieved on March 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings