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 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
October 2006 1-Month	2.90" (73.66mm)	2.16" (54.86mm)	0.74" (18.80mm)	113th Driest	Driest since: 2005	1952
	2.90" (73.66mm)	2.16" (54.86mm)	0.74" (18.80mm)	16th Wettest	Wettest since: 2004	2009
	Ties: 2015
Sep–Oct 2006 2-Month	5.70" (144.78mm)	4.65" (118.11mm)	1.05" (26.67mm)	114th Driest	Driest since: 2005	1952
Sep–Oct 2006 2-Month	5.70" (144.78mm)	4.65" (118.11mm)	1.05" (26.67mm)	15th Wettest	Wettest since: 2004	2018
Aug–Oct 2006 3-Month	8.50" (215.90mm)	7.27" (184.66mm)	1.23" (31.24mm)	116th Driest	Driest since: 2005	1952
Aug–Oct 2006 3-Month	8.50" (215.90mm)	7.27" (184.66mm)	1.23" (31.24mm)	13th Wettest	Wettest since: 2004	2018
Jul–Oct 2006 4-Month	10.96" (278.38mm)	10.05" (255.27mm)	0.91" (23.11mm)	101st Driest	Driest since: 2005	1952
Jul–Oct 2006 4-Month	10.96" (278.38mm)	10.05" (255.27mm)	0.91" (23.11mm)	28th Wettest	Wettest since: 2004	1941
Jun–Oct 2006 5-Month	13.52" (343.41mm)	12.97" (329.44mm)	0.55" (13.97mm)	76th Driest	Driest since: 2005	1952
Jun–Oct 2006 5-Month	13.52" (343.41mm)	12.97" (329.44mm)	0.55" (13.97mm)	53rd Wettest	Wettest since: 2004	1941
May–Oct 2006 6-Month	15.81" (401.57mm)	15.88" (403.35mm)	-0.07" (-1.78mm)	54th Driest	Driest since: 2001	1952
May–Oct 2006 6-Month	15.81" (401.57mm)	15.88" (403.35mm)	-0.07" (-1.78mm)	75th Wettest	Wettest since: 2005	1941
Apr–Oct 2006 7-Month	18.35" (466.09mm)	18.40" (467.36mm)	-0.05" (-1.27mm)	56th Driest	Driest since: 2002	1952
Apr–Oct 2006 7-Month	18.35" (466.09mm)	18.40" (467.36mm)	-0.05" (-1.27mm)	73rd Wettest	Wettest since: 2005	1941
Mar–Oct 2006 8-Month	20.66" (524.76mm)	20.91" (531.11mm)	-0.25" (-6.35mm)	48th Driest	Driest since: 2001	1956
Mar–Oct 2006 8-Month	20.66" (524.76mm)	20.91" (531.11mm)	-0.25" (-6.35mm)	81st Wettest	Wettest since: 2005	2019
Feb–Oct 2006 9-Month	22.18" (563.37mm)	23.04" (585.22mm)	-0.86" (-21.85mm)	37th Driest	Driest since: 2002	1934
Feb–Oct 2006 9-Month	22.18" (563.37mm)	23.04" (585.22mm)	-0.86" (-21.85mm)	92nd Wettest	Wettest since: 2005	2019
Jan–Oct 2006 10-Month	24.79" (629.67mm)	25.36" (644.14mm)	-0.57" (-14.47mm)	40th Driest	Driest since: 2002	1934
Jan–Oct 2006 10-Month	24.79" (629.67mm)	25.36" (644.14mm)	-0.57" (-14.47mm)	89th Wettest	Wettest since: 2005	2019
Dec 2005–Oct 2006 11-Month	27.08" (687.83mm)	27.70" (703.58mm)	-0.62" (-15.75mm)	42nd Driest	Driest since: 2002	1931
Dec 2005–Oct 2006 11-Month	27.08" (687.83mm)	27.70" (703.58mm)	-0.62" (-15.75mm)	86th Wettest	Wettest since: 2005	2019
Nov 2005–Oct 2006 12-Month	29.30" (744.22mm)	29.93" (760.22mm)	-0.63" (-16.00mm)	44th Driest	Driest since: 2002	1934
Nov 2005–Oct 2006 12-Month	29.30" (744.22mm)	29.93" (760.22mm)	-0.63" (-16.00mm)	84th Wettest	Wettest since: 2005	2019
May 2005–Oct 2006 18-Month	45.20" (1,148.08mm)	45.83" (1,164.08mm)	-0.63" (-16.00mm)	46th Driest	Driest since: 2002	1931
May 2005–Oct 2006 18-Month	45.20" (1,148.08mm)	45.83" (1,164.08mm)	-0.63" (-16.00mm)	82nd Wettest	Wettest since: 2005	2019
Nov 2004–Oct 2006 24-Month	60.23" (1,529.84mm)	59.90" (1,521.46mm)	0.33" (8.38mm)	65th Driest	Driest since: 2003	1931
Nov 2004–Oct 2006 24-Month	60.23" (1,529.84mm)	59.90" (1,521.46mm)	0.33" (8.38mm)	62nd Wettest	Wettest since: 2005	2019
Nov 2003–Oct 2006 36-Month	93.05" (2,363.47mm)	89.86" (2,282.44mm)	3.19" (81.03mm)	92nd Driest	Driest since: 2004	1956
Nov 2003–Oct 2006 36-Month	93.05" (2,363.47mm)	89.86" (2,282.44mm)	3.19" (81.03mm)	34th Wettest	Wettest since: 2005	2019
Nov 2002–Oct 2006 48-Month	123.57" (3,138.68mm)	119.78" (3,042.41mm)	3.79" (96.27mm)	95th Driest	Driest since: 2005	1956
Nov 2002–Oct 2006 48-Month	123.57" (3,138.68mm)	119.78" (3,042.41mm)	3.79" (96.27mm)	30th Wettest	Wettest since: 2000	2019
Nov 2001–Oct 2006 60-Month	152.43" (3,871.72mm)	149.66" (3,801.36mm)	2.77" (70.36mm)	79th Driest	Driest since: 2005	1934
Nov 2001–Oct 2006 60-Month	152.43" (3,871.72mm)	149.66" (3,801.36mm)	2.77" (70.36mm)	45th Wettest	Wettest since: 2001	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2023, retrieved on March 20, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings