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 2008

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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 2008 1-Month	2.84" (72.14mm)	2.35" (59.69mm)	0.49" (12.45mm)	105th Driest	Driest since: 2006	1930
	2.84" (72.14mm)	2.35" (59.69mm)	0.49" (12.45mm)	24th Wettest	Wettest since: 2007	2015
	Ties: 1940
Nov–Dec 2008 2-Month	4.79" (121.67mm)	4.58" (116.33mm)	0.21" (5.34mm)	81st Driest	Driest since: 2007	1976
Nov–Dec 2008 2-Month	4.79" (121.67mm)	4.58" (116.33mm)	0.21" (5.34mm)	48th Wettest	Wettest since: 2006	2015
Oct–Dec 2008 3-Month	6.97" (177.04mm)	6.74" (171.20mm)	0.23" (5.84mm)	72nd Driest	Driest since: 2005	1917
	6.97" (177.04mm)	6.74" (171.20mm)	0.23" (5.84mm)	57th Wettest	Wettest since: 2007	2015
	Ties: 1907
Sep–Dec 2008 4-Month	9.65" (245.11mm)	9.23" (234.44mm)	0.42" (10.67mm)	83rd Driest	Driest since: 2007	1939
Sep–Dec 2008 4-Month	9.65" (245.11mm)	9.23" (234.44mm)	0.42" (10.67mm)	46th Wettest	Wettest since: 2006	2018
Aug–Dec 2008 5-Month	12.70" (322.58mm)	11.85" (300.99mm)	0.85" (21.59mm)	88th Driest	Driest since: 2007	1917
Aug–Dec 2008 5-Month	12.70" (322.58mm)	11.85" (300.99mm)	0.85" (21.59mm)	41st Wettest	Wettest since: 2006	2018
Jul–Dec 2008 6-Month	15.50" (393.70mm)	14.62" (371.35mm)	0.88" (22.35mm)	89th Driest	Driest since: 2007	1917
	15.50" (393.70mm)	14.62" (371.35mm)	0.88" (22.35mm)	40th Wettest	Wettest since: 2006	2018
	Ties: 2014
Jun–Dec 2008 7-Month	18.50" (469.90mm)	17.55" (445.77mm)	0.95" (24.13mm)	85th Driest	Driest since: 2007	1917
Jun–Dec 2008 7-Month	18.50" (469.90mm)	17.55" (445.77mm)	0.95" (24.13mm)	44th Wettest	Wettest since: 2006	2018
May–Dec 2008 8-Month	21.50" (546.10mm)	20.46" (519.68mm)	1.04" (26.42mm)	85th Driest	Driest since: 2007	1917
	21.50" (546.10mm)	20.46" (519.68mm)	1.04" (26.42mm)	44th Wettest	Wettest since: 2004	2015
	Ties: 1990, 2003
Apr–Dec 2008 9-Month	24.04" (610.62mm)	22.98" (583.69mm)	1.06" (26.93mm)	87th Driest	Driest since: 2007	1956
	24.04" (610.62mm)	22.98" (583.69mm)	1.06" (26.93mm)	42nd Wettest	Wettest since: 2004	2015
	Ties: 1951, 1979
Mar–Dec 2008 10-Month	26.56" (674.62mm)	25.49" (647.45mm)	1.07" (27.17mm)	83rd Driest	Driest since: 2007	1956
Mar–Dec 2008 10-Month	26.56" (674.62mm)	25.49" (647.45mm)	1.07" (27.17mm)	46th Wettest	Wettest since: 2004	2015
Feb–Dec 2008 11-Month	29.03" (737.36mm)	27.62" (701.55mm)	1.41" (35.81mm)	90th Driest	Driest since: 2007	1910
Feb–Dec 2008 11-Month	29.03" (737.36mm)	27.62" (701.55mm)	1.41" (35.81mm)	39th Wettest	Wettest since: 2004	2018
Jan–Dec 2008 12-Month	31.24" (793.50mm)	29.94" (760.48mm)	1.30" (33.02mm)	91st Driest	Driest since: 2007	1910
Jan–Dec 2008 12-Month	31.24" (793.50mm)	29.94" (760.48mm)	1.30" (33.02mm)	38th Wettest	Wettest since: 2004	1973
Jul 2007–Dec 2008 18-Month	45.98" (1,167.89mm)	44.58" (1,132.33mm)	1.40" (35.56mm)	84th Driest	Driest since: 2007	1954
Jul 2007–Dec 2008 18-Month	45.98" (1,167.89mm)	44.58" (1,132.33mm)	1.40" (35.56mm)	44th Wettest	Wettest since: 2005	2019
Jan 2007–Dec 2008 24-Month	60.42" (1,534.67mm)	59.90" (1,521.46mm)	0.52" (13.21mm)	69th Driest	Driest since: 2007	1931
Jan 2007–Dec 2008 24-Month	60.42" (1,534.67mm)	59.90" (1,521.46mm)	0.52" (13.21mm)	59th Wettest	Wettest since: 2005	2019
Jan 2006–Dec 2008 36-Month	90.24" (2,292.10mm)	89.86" (2,282.44mm)	0.38" (9.66mm)	65th Driest	Driest since: 2007	1956
Jan 2006–Dec 2008 36-Month	90.24" (2,292.10mm)	89.86" (2,282.44mm)	0.38" (9.66mm)	62nd Wettest	Wettest since: 2006	2019
Jan 2005–Dec 2008 48-Month	120.32" (3,056.13mm)	119.78" (3,042.41mm)	0.54" (13.72mm)	61st Driest	Driest since: 2003	1956
	120.32" (3,056.13mm)	119.78" (3,042.41mm)	0.54" (13.72mm)	65th Wettest	Wettest since: 2007	2019
	Ties: 1970
Jan 2004–Dec 2008 60-Month	153.57" (3,900.68mm)	149.68" (3,801.87mm)	3.89" (98.81mm)	88th Driest	Driest since: 2007	1956
Jan 2004–Dec 2008 60-Month	153.57" (3,900.68mm)	149.68" (3,801.87mm)	3.89" (98.81mm)	37th 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 April 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings