Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Delaware

Precipitation Rankings, September 2011

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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 2011 1-Month	4.17" (105.92mm)	3.60" (91.44mm)	0.57" (14.48mm)	89th Driest	Driest since: 2010	1941
September 2011 1-Month	4.17" (105.92mm)	3.60" (91.44mm)	0.57" (14.48mm)	40th Wettest	Wettest since: 2009	1935
Aug–Sep 2011 2-Month	14.21" (360.93mm)	8.19" (208.03mm)	6.02" (152.90mm)	124th Driest	Driest since: 2010	2005
Aug–Sep 2011 2-Month	14.21" (360.93mm)	8.19" (208.03mm)	6.02" (152.90mm)	5th Wettest	Wettest since: 1999	1928
Jul–Sep 2011 3-Month	17.91" (454.91mm)	12.51" (317.75mm)	5.40" (137.16mm)	114th Driest	Driest since: 2010	1968
Jul–Sep 2011 3-Month	17.91" (454.91mm)	12.51" (317.75mm)	5.40" (137.16mm)	15th Wettest	Wettest since: 1989	1938
Jun–Sep 2011 4-Month	19.77" (502.16mm)	16.14" (409.96mm)	3.63" (92.20mm)	101st Driest	Driest since: 2010	1968
Jun–Sep 2011 4-Month	19.77" (502.16mm)	16.14" (409.96mm)	3.63" (92.20mm)	28th Wettest	Wettest since: 2009	1938
May–Sep 2011 5-Month	22.15" (562.61mm)	19.70" (500.38mm)	2.45" (62.23mm)	92nd Driest	Driest since: 2010	1964
May–Sep 2011 5-Month	22.15" (562.61mm)	19.70" (500.38mm)	2.45" (62.23mm)	37th Wettest	Wettest since: 2009	1989
Apr–Sep 2011 6-Month	25.45" (646.43mm)	23.18" (588.77mm)	2.27" (57.66mm)	88th Driest	Driest since: 2010	1986
Apr–Sep 2011 6-Month	25.45" (646.43mm)	23.18" (588.77mm)	2.27" (57.66mm)	41st Wettest	Wettest since: 2009	1989
Mar–Sep 2011 7-Month	29.50" (749.30mm)	27.16" (689.86mm)	2.34" (59.44mm)	91st Driest	Driest since: 2010	1986
Mar–Sep 2011 7-Month	29.50" (749.30mm)	27.16" (689.86mm)	2.34" (59.44mm)	38th Wettest	Wettest since: 2009	1989
Feb–Sep 2011 8-Month	31.86" (809.24mm)	30.20" (767.08mm)	1.66" (42.16mm)	84th Driest	Driest since: 2010	1930
Feb–Sep 2011 8-Month	31.86" (809.24mm)	30.20" (767.08mm)	1.66" (42.16mm)	45th Wettest	Wettest since: 2009	1989
Jan–Sep 2011 9-Month	35.04" (890.02mm)	33.69" (855.73mm)	1.35" (34.29mm)	80th Driest	Driest since: 2010	1930
Jan–Sep 2011 9-Month	35.04" (890.02mm)	33.69" (855.73mm)	1.35" (34.29mm)	49th Wettest	Wettest since: 2009	1989
Dec 2010–Sep 2011 10-Month	37.14" (943.36mm)	37.15" (943.61mm)	-0.01" (-0.25mm)	68th Driest	Driest since: 2008	1986
Dec 2010–Sep 2011 10-Month	37.14" (943.36mm)	37.15" (943.61mm)	-0.01" (-0.25mm)	60th Wettest	Wettest since: 2010	1958
Nov 2010–Sep 2011 11-Month	39.17" (994.92mm)	40.22" (1,021.59mm)	-1.05" (-26.67mm)	61st Driest	Driest since: 2008	1930
Nov 2010–Sep 2011 11-Month	39.17" (994.92mm)	40.22" (1,021.59mm)	-1.05" (-26.67mm)	67th Wettest	Wettest since: 2010	1958
Oct 2010–Sep 2011 12-Month	44.81" (1,138.17mm)	43.37" (1,101.60mm)	1.44" (36.57mm)	74th Driest	Driest since: 2008	1986
Oct 2010–Sep 2011 12-Month	44.81" (1,138.17mm)	43.37" (1,101.60mm)	1.44" (36.57mm)	54th Wettest	Wettest since: 2010	2003
Apr 2010–Sep 2011 18-Month	62.44" (1,585.98mm)	66.48" (1,688.59mm)	-4.04" (-102.61mm)	44th Driest	Driest since: 2008	1966
Apr 2010–Sep 2011 18-Month	62.44" (1,585.98mm)	66.48" (1,688.59mm)	-4.04" (-102.61mm)	84th Wettest	Wettest since: 2010	2010
Oct 2009–Sep 2011 24-Month	94.51" (2,400.55mm)	86.63" (2,200.40mm)	7.88" (200.15mm)	96th Driest	Driest since: 2009	1966
Oct 2009–Sep 2011 24-Month	94.51" (2,400.55mm)	86.63" (2,200.40mm)	7.88" (200.15mm)	31st Wettest	Wettest since: 2010	2004
Oct 2008–Sep 2011 36-Month	143.35" (3,641.09mm)	129.92" (3,299.97mm)	13.43" (341.12mm)	109th Driest	Driest since: 2010	1966
Oct 2008–Sep 2011 36-Month	143.35" (3,641.09mm)	129.92" (3,299.97mm)	13.43" (341.12mm)	17th Wettest	Wettest since: 2005	1935
Oct 2007–Sep 2011 48-Month	185.06" (4,700.52mm)	173.15" (4,398.01mm)	11.91" (302.51mm)	104th Driest	Driest since: 2010	1966
Oct 2007–Sep 2011 48-Month	185.06" (4,700.52mm)	173.15" (4,398.01mm)	11.91" (302.51mm)	21st Wettest	Wettest since: 2006	1936
Oct 2006–Sep 2011 60-Month	225.66" (5,731.76mm)	216.34" (5,495.04mm)	9.32" (236.72mm)	87th Driest	Driest since: 2009	1966
Oct 2006–Sep 2011 60-Month	225.66" (5,731.76mm)	216.34" (5,495.04mm)	9.32" (236.72mm)	37th Wettest	Wettest since: 2010	1937

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published May 2023, retrieved on May 31, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings