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 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
October 2010 1-Month	1.97" (50.04mm)	2.16" (54.86mm)	-0.19" (-4.82mm)	41st Driest	Driest since: 2003	1952
October 2010 1-Month	1.97" (50.04mm)	2.16" (54.86mm)	-0.19" (-4.82mm)	88th Wettest	Wettest since: 2009	2009
Sep–Oct 2010 2-Month	4.75" (120.65mm)	4.65" (118.11mm)	0.10" (2.54mm)	68th Driest	Driest since: 2005	1952
Sep–Oct 2010 2-Month	4.75" (120.65mm)	4.65" (118.11mm)	0.10" (2.54mm)	61st Wettest	Wettest since: 2009	2018
Aug–Oct 2010 3-Month	7.26" (184.40mm)	7.27" (184.66mm)	-0.01" (-0.26mm)	59th Driest	Driest since: 2003	1952
	7.26" (184.40mm)	7.27" (184.66mm)	-0.01" (-0.26mm)	70th Wettest	Wettest since: 2009	2018
	Ties: 1968
Jul–Oct 2010 4-Month	10.58" (268.73mm)	10.05" (255.27mm)	0.53" (13.46mm)	83rd Driest	Driest since: 2007	1952
	10.58" (268.73mm)	10.05" (255.27mm)	0.53" (13.46mm)	46th Wettest	Wettest since: 2009	1941
	Ties: 1925
Jun–Oct 2010 5-Month	14.07" (357.38mm)	12.97" (329.44mm)	1.10" (27.94mm)	101st Driest	Driest since: 2008	1952
	14.07" (357.38mm)	12.97" (329.44mm)	1.10" (27.94mm)	28th Wettest	Wettest since: 2009	1941
	Ties: 1975
May–Oct 2010 6-Month	17.39" (441.71mm)	15.88" (403.35mm)	1.51" (38.36mm)	108th Driest	Driest since: 2008	1952
	17.39" (441.71mm)	15.88" (403.35mm)	1.51" (38.36mm)	21st Wettest	Wettest since: 2009	1941
	Ties: 1993
Apr–Oct 2010 7-Month	19.77" (502.16mm)	18.40" (467.36mm)	1.37" (34.80mm)	96th Driest	Driest since: 2008	1952
Apr–Oct 2010 7-Month	19.77" (502.16mm)	18.40" (467.36mm)	1.37" (34.80mm)	33rd Wettest	Wettest since: 2009	1941
Mar–Oct 2010 8-Month	22.07" (560.58mm)	20.91" (531.11mm)	1.16" (29.47mm)	91st Driest	Driest since: 2008	1956
Mar–Oct 2010 8-Month	22.07" (560.58mm)	20.91" (531.11mm)	1.16" (29.47mm)	38th Wettest	Wettest since: 2009	2019
Feb–Oct 2010 9-Month	24.08" (611.63mm)	23.04" (585.22mm)	1.04" (26.41mm)	84th Driest	Driest since: 2007	1934
	24.08" (611.63mm)	23.04" (585.22mm)	1.04" (26.41mm)	45th Wettest	Wettest since: 2009	2019
	Ties: 1920
Jan–Oct 2010 10-Month	26.70" (678.18mm)	25.36" (644.14mm)	1.34" (34.04mm)	96th Driest	Driest since: 2008	1934
	26.70" (678.18mm)	25.36" (644.14mm)	1.34" (34.04mm)	33rd Wettest	Wettest since: 2009	2019
	Ties: 1958
Dec 2009–Oct 2010 11-Month	29.78" (756.41mm)	27.70" (703.58mm)	2.08" (52.83mm)	105th Driest	Driest since: 2008	1931
Dec 2009–Oct 2010 11-Month	29.78" (756.41mm)	27.70" (703.58mm)	2.08" (52.83mm)	23rd Wettest	Wettest since: 2009	2019
Nov 2009–Oct 2010 12-Month	31.41" (797.81mm)	29.93" (760.22mm)	1.48" (37.59mm)	92nd Driest	Driest since: 2008	1934
Nov 2009–Oct 2010 12-Month	31.41" (797.81mm)	29.93" (760.22mm)	1.48" (37.59mm)	36th Wettest	Wettest since: 2009	2019
May 2009–Oct 2010 18-Month	50.32" (1,278.13mm)	45.83" (1,164.08mm)	4.49" (114.05mm)	119th Driest	Driest since: 2009	1931
May 2009–Oct 2010 18-Month	50.32" (1,278.13mm)	45.83" (1,164.08mm)	4.49" (114.05mm)	9th Wettest	Wettest since: 1998	2019
Nov 2008–Oct 2010 24-Month	63.79" (1,620.27mm)	59.90" (1,521.46mm)	3.89" (98.81mm)	107th Driest	Driest since: 2009	1931
	63.79" (1,620.27mm)	59.90" (1,521.46mm)	3.89" (98.81mm)	20th Wettest	Wettest since: 1999	2019
	Ties: 1999
Nov 2007–Oct 2010 36-Month	94.61" (2,403.09mm)	89.86" (2,282.44mm)	4.75" (120.65mm)	104th Driest	Driest since: 2009	1956
Nov 2007–Oct 2010 36-Month	94.61" (2,403.09mm)	89.86" (2,282.44mm)	4.75" (120.65mm)	22nd Wettest	Wettest since: 1999	2019
Nov 2006–Oct 2010 48-Month	124.45" (3,161.03mm)	119.78" (3,042.41mm)	4.67" (118.62mm)	101st Driest	Driest since: 2009	1956
Nov 2006–Oct 2010 48-Month	124.45" (3,161.03mm)	119.78" (3,042.41mm)	4.67" (118.62mm)	24th Wettest	Wettest since: 1999	2019
Nov 2005–Oct 2010 60-Month	153.75" (3,905.25mm)	149.66" (3,801.36mm)	4.09" (103.89mm)	91st Driest	Driest since: 2009	1934
Nov 2005–Oct 2010 60-Month	153.75" (3,905.25mm)	149.66" (3,801.36mm)	4.09" (103.89mm)	33rd Wettest	Wettest since: 2000	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published June 2023, retrieved on June 10, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings