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, December 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
December 2012 1-Month	2.88" (73.15mm)	2.35" (59.69mm)	0.53" (13.46mm)	108th Driest	Driest since: 2011	1930
	2.88" (73.15mm)	2.35" (59.69mm)	0.53" (13.46mm)	21st Wettest	Wettest since: 2009	2015
	Ties: 1906
Nov–Dec 2012 2-Month	4.20" (106.68mm)	4.58" (116.33mm)	-0.38" (-9.65mm)	42nd Driest	Driest since: 1999	1976
	4.20" (106.68mm)	4.58" (116.33mm)	-0.38" (-9.65mm)	87th Wettest	Wettest since: 2011	2015
	Ties: 1979
Oct–Dec 2012 3-Month	6.43" (163.32mm)	6.74" (171.20mm)	-0.31" (-7.88mm)	44th Driest	Driest since: 1999	1917
Oct–Dec 2012 3-Month	6.43" (163.32mm)	6.74" (171.20mm)	-0.31" (-7.88mm)	85th Wettest	Wettest since: 2011	2015
Sep–Dec 2012 4-Month	8.77" (222.76mm)	9.23" (234.44mm)	-0.46" (-11.68mm)	45th Driest	Driest since: 1999	1939
Sep–Dec 2012 4-Month	8.77" (222.76mm)	9.23" (234.44mm)	-0.46" (-11.68mm)	84th Wettest	Wettest since: 2011	2018
Aug–Dec 2012 5-Month	11.24" (285.50mm)	11.85" (300.99mm)	-0.61" (-15.49mm)	36th Driest	Driest since: 2000	1917
Aug–Dec 2012 5-Month	11.24" (285.50mm)	11.85" (300.99mm)	-0.61" (-15.49mm)	93rd Wettest	Wettest since: 2011	2018
Jul–Dec 2012 6-Month	13.75" (349.25mm)	14.62" (371.35mm)	-0.87" (-22.10mm)	33rd Driest	Driest since: 2000	1917
Jul–Dec 2012 6-Month	13.75" (349.25mm)	14.62" (371.35mm)	-0.87" (-22.10mm)	96th Wettest	Wettest since: 2011	2018
Jun–Dec 2012 7-Month	15.99" (406.15mm)	17.55" (445.77mm)	-1.56" (-39.62mm)	21st Driest	Driest since: 1999	1917
	15.99" (406.15mm)	17.55" (445.77mm)	-1.56" (-39.62mm)	108th Wettest	Wettest since: 2011	2018
	Ties: 1938
May–Dec 2012 8-Month	18.49" (469.65mm)	20.46" (519.68mm)	-1.97" (-50.03mm)	20th Driest	Driest since: 1999	1917
	18.49" (469.65mm)	20.46" (519.68mm)	-1.97" (-50.03mm)	109th Wettest	Wettest since: 2011	2015
	Ties: 1904
Apr–Dec 2012 9-Month	20.72" (526.29mm)	22.98" (583.69mm)	-2.26" (-57.40mm)	17th Driest	Driest since: 1988	1956
Apr–Dec 2012 9-Month	20.72" (526.29mm)	22.98" (583.69mm)	-2.26" (-57.40mm)	112th Wettest	Wettest since: 2011	2015
Mar–Dec 2012 10-Month	23.59" (599.19mm)	25.49" (647.45mm)	-1.90" (-48.26mm)	21st Driest	Driest since: 1999	1956
Mar–Dec 2012 10-Month	23.59" (599.19mm)	25.49" (647.45mm)	-1.90" (-48.26mm)	108th Wettest	Wettest since: 2011	2015
Feb–Dec 2012 11-Month	25.44" (646.18mm)	27.62" (701.55mm)	-2.18" (-55.37mm)	20th Driest	Driest since: 1999	1910
Feb–Dec 2012 11-Month	25.44" (646.18mm)	27.62" (701.55mm)	-2.18" (-55.37mm)	109th Wettest	Wettest since: 2011	2018
Jan–Dec 2012 12-Month	27.53" (699.26mm)	29.94" (760.48mm)	-2.41" (-61.22mm)	19th Driest	Driest since: 1988	1910
Jan–Dec 2012 12-Month	27.53" (699.26mm)	29.94" (760.48mm)	-2.41" (-61.22mm)	110th Wettest	Wettest since: 2011	1973
Jul 2011–Dec 2012 18-Month	41.66" (1,058.16mm)	44.58" (1,132.33mm)	-2.92" (-74.17mm)	20th Driest	Driest since: 2000	1954
Jul 2011–Dec 2012 18-Month	41.66" (1,058.16mm)	44.58" (1,132.33mm)	-2.92" (-74.17mm)	108th Wettest	Wettest since: 2011	2019
Jan 2011–Dec 2012 24-Month	57.63" (1,463.80mm)	59.90" (1,521.46mm)	-2.27" (-57.66mm)	30th Driest	Driest since: 2001	1931
Jan 2011–Dec 2012 24-Month	57.63" (1,463.80mm)	59.90" (1,521.46mm)	-2.27" (-57.66mm)	98th Wettest	Wettest since: 2011	2019
Jan 2010–Dec 2012 36-Month	89.00" (2,260.60mm)	89.86" (2,282.44mm)	-0.86" (-21.84mm)	50th Driest	Driest since: 2003	1956
Jan 2010–Dec 2012 36-Month	89.00" (2,260.60mm)	89.86" (2,282.44mm)	-0.86" (-21.84mm)	77th Wettest	Wettest since: 2011	2019
Jan 2009–Dec 2012 48-Month	121.30" (3,081.02mm)	119.78" (3,042.41mm)	1.52" (38.61mm)	72nd Driest	Driest since: 2008	1956
Jan 2009–Dec 2012 48-Month	121.30" (3,081.02mm)	119.78" (3,042.41mm)	1.52" (38.61mm)	54th Wettest	Wettest since: 2011	2019
Jan 2008–Dec 2012 60-Month	152.54" (3,874.52mm)	149.68" (3,801.87mm)	2.86" (72.65mm)	79th Driest	Driest since: 2005	1956
Jan 2008–Dec 2012 60-Month	152.54" (3,874.52mm)	149.68" (3,801.87mm)	2.86" (72.65mm)	46th 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 26, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings