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 2010

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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 2010 1-Month	2.45" (62.23mm)	2.35" (59.69mm)	0.10" (2.54mm)	69th Driest	Driest since: 2005	1930
	2.45" (62.23mm)	2.35" (59.69mm)	0.10" (2.54mm)	60th Wettest	Wettest since: 2009	2015
	Ties: 1952
Nov–Dec 2010 2-Month	4.67" (118.62mm)	4.58" (116.33mm)	0.09" (2.29mm)	69th Driest	Driest since: 2007	1976
	4.67" (118.62mm)	4.58" (116.33mm)	0.09" (2.29mm)	60th Wettest	Wettest since: 2009	2015
	Ties: 1967
Oct–Dec 2010 3-Month	6.64" (168.66mm)	6.74" (171.20mm)	-0.10" (-2.54mm)	53rd Driest	Driest since: 1999	1917
Oct–Dec 2010 3-Month	6.64" (168.66mm)	6.74" (171.20mm)	-0.10" (-2.54mm)	76th Wettest	Wettest since: 2009	2015
Sep–Dec 2010 4-Month	9.42" (239.27mm)	9.23" (234.44mm)	0.19" (4.83mm)	66th Driest	Driest since: 2007	1939
Sep–Dec 2010 4-Month	9.42" (239.27mm)	9.23" (234.44mm)	0.19" (4.83mm)	63rd Wettest	Wettest since: 2009	2018
Aug–Dec 2010 5-Month	11.93" (303.02mm)	11.85" (300.99mm)	0.08" (2.03mm)	66th Driest	Driest since: 2007	1917
Aug–Dec 2010 5-Month	11.93" (303.02mm)	11.85" (300.99mm)	0.08" (2.03mm)	63rd Wettest	Wettest since: 2009	2018
Jul–Dec 2010 6-Month	15.25" (387.35mm)	14.62" (371.35mm)	0.63" (16.00mm)	82nd Driest	Driest since: 2007	1917
Jul–Dec 2010 6-Month	15.25" (387.35mm)	14.62" (371.35mm)	0.63" (16.00mm)	47th Wettest	Wettest since: 2009	2018
Jun–Dec 2010 7-Month	18.74" (476.00mm)	17.55" (445.77mm)	1.19" (30.23mm)	95th Driest	Driest since: 2008	1917
Jun–Dec 2010 7-Month	18.74" (476.00mm)	17.55" (445.77mm)	1.19" (30.23mm)	34th Wettest	Wettest since: 2009	2018
May–Dec 2010 8-Month	22.06" (560.32mm)	20.46" (519.68mm)	1.60" (40.64mm)	101st Driest	Driest since: 2008	1917
May–Dec 2010 8-Month	22.06" (560.32mm)	20.46" (519.68mm)	1.60" (40.64mm)	28th Wettest	Wettest since: 2009	2015
Apr–Dec 2010 9-Month	24.44" (620.78mm)	22.98" (583.69mm)	1.46" (37.09mm)	97th Driest	Driest since: 2008	1956
Apr–Dec 2010 9-Month	24.44" (620.78mm)	22.98" (583.69mm)	1.46" (37.09mm)	32nd Wettest	Wettest since: 2009	2015
Mar–Dec 2010 10-Month	26.74" (679.20mm)	25.49" (647.45mm)	1.25" (31.75mm)	92nd Driest	Driest since: 2008	1956
	26.74" (679.20mm)	25.49" (647.45mm)	1.25" (31.75mm)	37th Wettest	Wettest since: 2009	2015
	Ties: 1968
Feb–Dec 2010 11-Month	28.75" (730.25mm)	27.62" (701.55mm)	1.13" (28.70mm)	85th Driest	Driest since: 2007	1910
Feb–Dec 2010 11-Month	28.75" (730.25mm)	27.62" (701.55mm)	1.13" (28.70mm)	44th Wettest	Wettest since: 2009	2018
Jan–Dec 2010 12-Month	31.37" (796.80mm)	29.94" (760.48mm)	1.43" (36.32mm)	97th Driest	Driest since: 2008	1910
Jan–Dec 2010 12-Month	31.37" (796.80mm)	29.94" (760.48mm)	1.43" (36.32mm)	32nd Wettest	Wettest since: 2009	1973
Jul 2009–Dec 2010 18-Month	48.67" (1,236.22mm)	44.58" (1,132.33mm)	4.09" (103.89mm)	115th Driest	Driest since: 2009	1954
Jul 2009–Dec 2010 18-Month	48.67" (1,236.22mm)	44.58" (1,132.33mm)	4.09" (103.89mm)	13th Wettest	Wettest since: 1998	2019
Jan 2009–Dec 2010 24-Month	63.67" (1,617.22mm)	59.90" (1,521.46mm)	3.77" (95.76mm)	104th Driest	Driest since: 2009	1931
Jan 2009–Dec 2010 24-Month	63.67" (1,617.22mm)	59.90" (1,521.46mm)	3.77" (95.76mm)	24th Wettest	Wettest since: 2004	2019
Jan 2008–Dec 2010 36-Month	94.91" (2,410.71mm)	89.86" (2,282.44mm)	5.05" (128.27mm)	106th Driest	Driest since: 2009	1956
Jan 2008–Dec 2010 36-Month	94.91" (2,410.71mm)	89.86" (2,282.44mm)	5.05" (128.27mm)	21st Wettest	Wettest since: 1998	2019
Jan 2007–Dec 2010 48-Month	124.09" (3,151.89mm)	119.78" (3,042.41mm)	4.31" (109.48mm)	97th Driest	Driest since: 2009	1956
	124.09" (3,151.89mm)	119.78" (3,042.41mm)	4.31" (109.48mm)	29th Wettest	Wettest since: 1999	2019
	Ties: 1947
Jan 2006–Dec 2010 60-Month	153.91" (3,909.31mm)	149.68" (3,801.87mm)	4.23" (107.44mm)	90th Driest	Driest since: 2009	1956
Jan 2006–Dec 2010 60-Month	153.91" (3,909.31mm)	149.68" (3,801.87mm)	4.23" (107.44mm)	35th Wettest	Wettest since: 2000	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published February 2023, retrieved on February 8, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings