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, October 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
October 2012 1-Month	2.23" (56.64mm)	2.16" (54.86mm)	0.07" (1.78mm)	68th Driest	Driest since: 2011	1952
	2.23" (56.64mm)	2.16" (54.86mm)	0.07" (1.78mm)	61st Wettest	Wettest since: 2009	2009
	Ties: 1928, 2013
Sep–Oct 2012 2-Month	4.57" (116.08mm)	4.65" (118.11mm)	-0.08" (-2.03mm)	47th Driest	Driest since: 2005	1952
	4.57" (116.08mm)	4.65" (118.11mm)	-0.08" (-2.03mm)	82nd Wettest	Wettest since: 2011	2018
	Ties: 1989
Aug–Oct 2012 3-Month	7.04" (178.82mm)	7.27" (184.66mm)	-0.23" (-5.84mm)	46th Driest	Driest since: 2011	1952
	7.04" (178.82mm)	7.27" (184.66mm)	-0.23" (-5.84mm)	83rd Wettest	Wettest since: 2010	2018
	Ties: 2020
Jul–Oct 2012 4-Month	9.55" (242.57mm)	10.05" (255.27mm)	-0.50" (-12.70mm)	37th Driest	Driest since: 2011	1952
Jul–Oct 2012 4-Month	9.55" (242.57mm)	10.05" (255.27mm)	-0.50" (-12.70mm)	92nd Wettest	Wettest since: 2010	1941
Jun–Oct 2012 5-Month	11.79" (299.47mm)	12.97" (329.44mm)	-1.18" (-29.97mm)	23rd Driest	Driest since: 1988	1952
Jun–Oct 2012 5-Month	11.79" (299.47mm)	12.97" (329.44mm)	-1.18" (-29.97mm)	106th Wettest	Wettest since: 2011	1941
May–Oct 2012 6-Month	14.29" (362.97mm)	15.88" (403.35mm)	-1.59" (-40.38mm)	19th Driest	Driest since: 1988	1952
May–Oct 2012 6-Month	14.29" (362.97mm)	15.88" (403.35mm)	-1.59" (-40.38mm)	110th Wettest	Wettest since: 2011	1941
Apr–Oct 2012 7-Month	16.52" (419.61mm)	18.40" (467.36mm)	-1.88" (-47.75mm)	17th Driest	Driest since: 1988	1952
Apr–Oct 2012 7-Month	16.52" (419.61mm)	18.40" (467.36mm)	-1.88" (-47.75mm)	112th Wettest	Wettest since: 2011	1941
Mar–Oct 2012 8-Month	19.39" (492.51mm)	20.91" (531.11mm)	-1.52" (-38.60mm)	19th Driest	Driest since: 1988	1956
Mar–Oct 2012 8-Month	19.39" (492.51mm)	20.91" (531.11mm)	-1.52" (-38.60mm)	110th Wettest	Wettest since: 2011	2019
Feb–Oct 2012 9-Month	21.24" (539.50mm)	23.04" (585.22mm)	-1.80" (-45.72mm)	17th Driest	Driest since: 1988	1934
Feb–Oct 2012 9-Month	21.24" (539.50mm)	23.04" (585.22mm)	-1.80" (-45.72mm)	112th Wettest	Wettest since: 2011	2019
Jan–Oct 2012 10-Month	23.33" (592.58mm)	25.36" (644.14mm)	-2.03" (-51.56mm)	16th Driest	Driest since: 1988	1934
Jan–Oct 2012 10-Month	23.33" (592.58mm)	25.36" (644.14mm)	-2.03" (-51.56mm)	113th Wettest	Wettest since: 2011	2019
Dec 2011–Oct 2012 11-Month	25.59" (649.99mm)	27.70" (703.58mm)	-2.11" (-53.59mm)	19th Driest	Driest since: 2000	1931
	25.59" (649.99mm)	27.70" (703.58mm)	-2.11" (-53.59mm)	109th Wettest	Wettest since: 2011	2019
	Ties: 1987
Nov 2011–Oct 2012 12-Month	28.06" (712.72mm)	29.93" (760.22mm)	-1.87" (-47.50mm)	25th Driest	Driest since: 2000	1934
Nov 2011–Oct 2012 12-Month	28.06" (712.72mm)	29.93" (760.22mm)	-1.87" (-47.50mm)	103rd Wettest	Wettest since: 2011	2019
May 2011–Oct 2012 18-Month	43.47" (1,104.14mm)	45.83" (1,164.08mm)	-2.36" (-59.94mm)	23rd Driest	Driest since: 2001	1931
	43.47" (1,104.14mm)	45.83" (1,164.08mm)	-2.36" (-59.94mm)	105th Wettest	Wettest since: 2011	2019
	Ties: 1981, 2001
Nov 2010–Oct 2012 24-Month	58.10" (1,475.74mm)	59.90" (1,521.46mm)	-1.80" (-45.72mm)	36th Driest	Driest since: 2002	1931
Nov 2010–Oct 2012 24-Month	58.10" (1,475.74mm)	59.90" (1,521.46mm)	-1.80" (-45.72mm)	91st Wettest	Wettest since: 2011	2019
Nov 2009–Oct 2012 36-Month	89.51" (2,273.55mm)	89.86" (2,282.44mm)	-0.35" (-8.89mm)	56th Driest	Driest since: 2003	1956
Nov 2009–Oct 2012 36-Month	89.51" (2,273.55mm)	89.86" (2,282.44mm)	-0.35" (-8.89mm)	70th Wettest	Wettest since: 2011	2019
Nov 2008–Oct 2012 48-Month	121.89" (3,096.01mm)	119.78" (3,042.41mm)	2.11" (53.60mm)	76th Driest	Driest since: 2008	1956
Nov 2008–Oct 2012 48-Month	121.89" (3,096.01mm)	119.78" (3,042.41mm)	2.11" (53.60mm)	49th Wettest	Wettest since: 2011	2019
Nov 2007–Oct 2012 60-Month	152.71" (3,878.83mm)	149.66" (3,801.36mm)	3.05" (77.47mm)	81st Driest	Driest since: 2006	1934
Nov 2007–Oct 2012 60-Month	152.71" (3,878.83mm)	149.66" (3,801.36mm)	3.05" (77.47mm)	43rd Wettest	Wettest since: 2011	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published January 2023, retrieved on January 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings