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 2006

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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 2006 1-Month	2.57" (65.28mm)	2.35" (59.69mm)	0.22" (5.59mm)	78th Driest	Driest since: 2005	1930
	2.57" (65.28mm)	2.35" (59.69mm)	0.22" (5.59mm)	51st Wettest	Wettest since: 2002	2015
	Ties: 2019
Nov–Dec 2006 2-Month	5.03" (127.76mm)	4.58" (116.33mm)	0.45" (11.43mm)	96th Driest	Driest since: 2005	1976
Nov–Dec 2006 2-Month	5.03" (127.76mm)	4.58" (116.33mm)	0.45" (11.43mm)	33rd Wettest	Wettest since: 2004	2015
Oct–Dec 2006 3-Month	7.93" (201.42mm)	6.74" (171.20mm)	1.19" (30.22mm)	110th Driest	Driest since: 2005	1917
Oct–Dec 2006 3-Month	7.93" (201.42mm)	6.74" (171.20mm)	1.19" (30.22mm)	19th Wettest	Wettest since: 2004	2015
Sep–Dec 2006 4-Month	10.73" (272.54mm)	9.23" (234.44mm)	1.50" (38.10mm)	111th Driest	Driest since: 2005	1939
Sep–Dec 2006 4-Month	10.73" (272.54mm)	9.23" (234.44mm)	1.50" (38.10mm)	18th Wettest	Wettest since: 2004	2018
Aug–Dec 2006 5-Month	13.53" (343.66mm)	11.85" (300.99mm)	1.68" (42.67mm)	112th Driest	Driest since: 2005	1917
Aug–Dec 2006 5-Month	13.53" (343.66mm)	11.85" (300.99mm)	1.68" (42.67mm)	17th Wettest	Wettest since: 2004	2018
Jul–Dec 2006 6-Month	15.99" (406.15mm)	14.62" (371.35mm)	1.37" (34.80mm)	107th Driest	Driest since: 2005	1917
Jul–Dec 2006 6-Month	15.99" (406.15mm)	14.62" (371.35mm)	1.37" (34.80mm)	22nd Wettest	Wettest since: 2004	2018
Jun–Dec 2006 7-Month	18.55" (471.17mm)	17.55" (445.77mm)	1.00" (25.40mm)	87th Driest	Driest since: 2005	1917
Jun–Dec 2006 7-Month	18.55" (471.17mm)	17.55" (445.77mm)	1.00" (25.40mm)	42nd Wettest	Wettest since: 2004	2018
May–Dec 2006 8-Month	20.84" (529.34mm)	20.46" (519.68mm)	0.38" (9.66mm)	70th Driest	Driest since: 2005	1917
May–Dec 2006 8-Month	20.84" (529.34mm)	20.46" (519.68mm)	0.38" (9.66mm)	59th Wettest	Wettest since: 2004	2015
Apr–Dec 2006 9-Month	23.38" (593.85mm)	22.98" (583.69mm)	0.40" (10.16mm)	68th Driest	Driest since: 2005	1956
Apr–Dec 2006 9-Month	23.38" (593.85mm)	22.98" (583.69mm)	0.40" (10.16mm)	61st Wettest	Wettest since: 2004	2015
Mar–Dec 2006 10-Month	25.69" (652.53mm)	25.49" (647.45mm)	0.20" (5.08mm)	62nd Driest	Driest since: 2005	1956
Mar–Dec 2006 10-Month	25.69" (652.53mm)	25.49" (647.45mm)	0.20" (5.08mm)	67th Wettest	Wettest since: 2004	2015
Feb–Dec 2006 11-Month	27.21" (691.13mm)	27.62" (701.55mm)	-0.41" (-10.42mm)	51st Driest	Driest since: 2002	1910
Feb–Dec 2006 11-Month	27.21" (691.13mm)	27.62" (701.55mm)	-0.41" (-10.42mm)	78th Wettest	Wettest since: 2005	2018
Jan–Dec 2006 12-Month	29.82" (757.43mm)	29.94" (760.48mm)	-0.12" (-3.05mm)	54th Driest	Driest since: 2002	1910
Jan–Dec 2006 12-Month	29.82" (757.43mm)	29.94" (760.48mm)	-0.12" (-3.05mm)	75th Wettest	Wettest since: 2005	1973
Jul 2005–Dec 2006 18-Month	44.33" (1,125.98mm)	44.58" (1,132.33mm)	-0.25" (-6.35mm)	51st Driest	Driest since: 2002	1954
	44.33" (1,125.98mm)	44.58" (1,132.33mm)	-0.25" (-6.35mm)	77th Wettest	Wettest since: 2005	2019
	Ties: 1962
Jan 2005–Dec 2006 24-Month	59.90" (1,521.46mm)	59.90" (1,521.46mm)	0.00" (0.00mm)	56th Driest	Driest since: 2003	1931
Jan 2005–Dec 2006 24-Month	59.90" (1,521.46mm)	59.90" (1,521.46mm)	0.00" (0.00mm)	72nd Wettest	Wettest since: 2005	2019
Jan 2004–Dec 2006 36-Month	93.15" (2,366.01mm)	89.86" (2,282.44mm)	3.29" (83.57mm)	93rd Driest	Driest since: 2004	1956
Jan 2004–Dec 2006 36-Month	93.15" (2,366.01mm)	89.86" (2,282.44mm)	3.29" (83.57mm)	34th Wettest	Wettest since: 2005	2019
Jan 2003–Dec 2006 48-Month	123.66" (3,140.96mm)	119.78" (3,042.41mm)	3.88" (98.55mm)	93rd Driest	Driest since: 2005	1956
Jan 2003–Dec 2006 48-Month	123.66" (3,140.96mm)	119.78" (3,042.41mm)	3.88" (98.55mm)	33rd Wettest	Wettest since: 1999	2019
Jan 2002–Dec 2006 60-Month	152.71" (3,878.83mm)	149.68" (3,801.87mm)	3.03" (76.96mm)	82nd Driest	Driest since: 2005	1956
Jan 2002–Dec 2006 60-Month	152.71" (3,878.83mm)	149.68" (3,801.87mm)	3.03" (76.96mm)	43rd Wettest	Wettest since: 2000	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2023, retrieved on March 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings