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, September 2005

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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
September 2005 1-Month	1.94" (49.28mm)	2.49" (63.25mm)	-0.55" (-13.97mm)	14th Driest	Driest since: 1984	1956
September 2005 1-Month	1.94" (49.28mm)	2.49" (63.25mm)	-0.55" (-13.97mm)	115th Wettest	Wettest since: 2004	1986
Aug–Sep 2005 2-Month	4.93" (125.22mm)	5.11" (129.79mm)	-0.18" (-4.57mm)	47th Driest	Driest since: 2001	1956
	4.93" (125.22mm)	5.11" (129.79mm)	-0.18" (-4.57mm)	82nd Wettest	Wettest since: 2004	1977
	Ties: 1987, 1998, 2022
Jul–Sep 2005 3-Month	7.63" (193.80mm)	7.88" (200.15mm)	-0.25" (-6.35mm)	39th Driest	Driest since: 2001	1930
	7.63" (193.80mm)	7.88" (200.15mm)	-0.25" (-6.35mm)	90th Wettest	Wettest since: 2004	1915
	Ties: 1990
Jun–Sep 2005 4-Month	10.77" (273.56mm)	10.81" (274.57mm)	-0.04" (-1.01mm)	61st Driest	Driest since: 2002	1930
Jun–Sep 2005 4-Month	10.77" (273.56mm)	10.81" (274.57mm)	-0.04" (-1.01mm)	68th Wettest	Wettest since: 2004	1915
May–Sep 2005 5-Month	13.53" (343.66mm)	13.72" (348.49mm)	-0.19" (-4.83mm)	51st Driest	Driest since: 2002	1956
May–Sep 2005 5-Month	13.53" (343.66mm)	13.72" (348.49mm)	-0.19" (-4.83mm)	78th Wettest	Wettest since: 2004	1915
Apr–Sep 2005 6-Month	16.10" (408.94mm)	16.24" (412.50mm)	-0.14" (-3.56mm)	55th Driest	Driest since: 2002	1956
Apr–Sep 2005 6-Month	16.10" (408.94mm)	16.24" (412.50mm)	-0.14" (-3.56mm)	74th Wettest	Wettest since: 2004	1915
Mar–Sep 2005 7-Month	18.44" (468.38mm)	18.75" (476.25mm)	-0.31" (-7.87mm)	47th Driest	Driest since: 2002	1956
Mar–Sep 2005 7-Month	18.44" (468.38mm)	18.75" (476.25mm)	-0.31" (-7.87mm)	82nd Wettest	Wettest since: 2004	1973
Feb–Sep 2005 8-Month	20.50" (520.70mm)	20.88" (530.35mm)	-0.38" (-9.65mm)	49th Driest	Driest since: 2002	1930
Feb–Sep 2005 8-Month	20.50" (520.70mm)	20.88" (530.35mm)	-0.38" (-9.65mm)	80th Wettest	Wettest since: 2004	2019
Jan–Sep 2005 9-Month	23.20" (589.28mm)	23.20" (589.28mm)	0.00" (0.00mm)	62nd Driest	Driest since: 2002	1934
Jan–Sep 2005 9-Month	23.20" (589.28mm)	23.20" (589.28mm)	0.00" (0.00mm)	67th Wettest	Wettest since: 2004	2019
Dec 2004–Sep 2005 10-Month	25.38" (644.65mm)	25.54" (648.72mm)	-0.16" (-4.07mm)	56th Driest	Driest since: 2002	1931
	25.38" (644.65mm)	25.54" (648.72mm)	-0.16" (-4.07mm)	72nd Wettest	Wettest since: 2004	2019
	Ties: 1902
Nov 2004–Sep 2005 11-Month	28.56" (725.42mm)	27.77" (705.36mm)	0.79" (20.06mm)	78th Driest	Driest since: 2002	1934
Nov 2004–Sep 2005 11-Month	28.56" (725.42mm)	27.77" (705.36mm)	0.79" (20.06mm)	50th Wettest	Wettest since: 2004	2019
Oct 2004–Sep 2005 12-Month	31.60" (802.64mm)	29.94" (760.48mm)	1.66" (42.16mm)	93rd Driest	Driest since: 2002	1934
	31.60" (802.64mm)	29.94" (760.48mm)	1.66" (42.16mm)	35th Wettest	Wettest since: 2004	2019
	Ties: 1919
Apr 2004–Sep 2005 18-Month	50.02" (1,270.51mm)	46.20" (1,173.48mm)	3.82" (97.03mm)	113th Driest	Driest since: 2004	1931
Apr 2004–Sep 2005 18-Month	50.02" (1,270.51mm)	46.20" (1,173.48mm)	3.82" (97.03mm)	15th Wettest	Wettest since: 1998	2019
Oct 2003–Sep 2005 24-Month	63.21" (1,605.53mm)	59.92" (1,521.97mm)	3.29" (83.56mm)	101st Driest	Driest since: 2003	1918
Oct 2003–Sep 2005 24-Month	63.21" (1,605.53mm)	59.92" (1,521.97mm)	3.29" (83.56mm)	26th Wettest	Wettest since: 2004	2020
Oct 2002–Sep 2005 36-Month	94.91" (2,410.71mm)	89.87" (2,282.70mm)	5.04" (128.01mm)	107th Driest	Driest since: 2004	1956
Oct 2002–Sep 2005 36-Month	94.91" (2,410.71mm)	89.87" (2,282.70mm)	5.04" (128.01mm)	19th Wettest	Wettest since: 1999	2019
Oct 2001–Sep 2005 48-Month	122.82" (3,119.63mm)	119.78" (3,042.41mm)	3.04" (77.22mm)	88th Driest	Driest since: 2004	1956
Oct 2001–Sep 2005 48-Month	122.82" (3,119.63mm)	119.78" (3,042.41mm)	3.04" (77.22mm)	37th Wettest	Wettest since: 2000	2019
Oct 2000–Sep 2005 60-Month	151.73" (3,853.94mm)	149.66" (3,801.36mm)	2.07" (52.58mm)	73rd Driest	Driest since: 2004	1956
Oct 2000–Sep 2005 60-Month	151.73" (3,853.94mm)	149.66" (3,801.36mm)	2.07" (52.58mm)	51st Wettest	Wettest since: 2001	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published May 2023, retrieved on May 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings