Climate at a Glance | Divisional Rankings | National Centers for Environmental Information (NCEI)

Divisional Rankings

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

South Dakota, Climate Division 8

December 2012 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 2012 1-Month	-0.20	0.18	-0.38	48th Driest	Driest since: 2011	1943
December 2012 1-Month	-0.20	0.18	-0.38	83rd Wettest	Wettest since: 2010	1951
Nov–Dec 2012 2-Month	-0.81	0.14	-0.95	21st Driest	Driest since: 2004	1912
	-0.81	0.14	-0.95	110th Wettest	Wettest since: 2011	1920, 2019
	Ties: 2004
Oct–Dec 2012 3-Month	-0.96	0.24	-1.20	14th Driest	Driest since: 1999	1938
Oct–Dec 2012 3-Month	-0.96	0.24	-1.20	117th Wettest	Wettest since: 2011	1998
Sep–Dec 2012 4-Month	-1.47	0.23	-1.70	5th Driest	Driest since: 1958	1933
Sep–Dec 2012 4-Month	-1.47	0.23	-1.70	126th Wettest	Wettest since: 2011	2019
Aug–Dec 2012 5-Month	-1.92	0.25	-2.17	1st Driest	Driest to Date	2012
Aug–Dec 2012 5-Month	-1.92	0.25	-2.17	130th Wettest	Wettest since: 2011	2019
Jul–Dec 2012 6-Month	-2.40	0.30	-2.70	1st Driest	Driest to Date	2012
Jul–Dec 2012 6-Month	-2.40	0.30	-2.70	130th Wettest	Wettest since: 2011	2019
Jun–Dec 2012 7-Month	-2.45	0.29	-2.74	1st Driest	Driest to Date	2012
Jun–Dec 2012 7-Month	-2.45	0.29	-2.74	130th Wettest	Wettest since: 2011	2019
May–Dec 2012 8-Month	-2.40	0.28	-2.68	1st Driest	Driest to Date	2012
May–Dec 2012 8-Month	-2.40	0.28	-2.68	130th Wettest	Wettest since: 2011	2019
Apr–Dec 2012 9-Month	-2.07	0.28	-2.35	2nd Driest	Driest since: 1934	1934
Apr–Dec 2012 9-Month	-2.07	0.28	-2.35	129th Wettest	Wettest since: 2011	2019
Mar–Dec 2012 10-Month	-2.27	0.23	-2.50	1st Driest	Driest to Date	2012
Mar–Dec 2012 10-Month	-2.27	0.23	-2.50	130th Wettest	Wettest since: 2011	2019
Feb–Dec 2012 11-Month	-1.90	0.22	-2.12	2nd Driest	Driest since: 1934	1934
Feb–Dec 2012 11-Month	-1.90	0.22	-2.12	129th Wettest	Wettest since: 2011	2019
Jan–Dec 2012 12-Month	-1.76	0.22	-1.98	2nd Driest	Driest since: 1934	1934
Jan–Dec 2012 12-Month	-1.76	0.22	-1.98	129th Wettest	Wettest since: 2011	2019
Jul 2011–Dec 2012 18-Month	-0.75	0.25	-1.00	17th Driest	Driest since: 2003	1934
Jul 2011–Dec 2012 18-Month	-0.75	0.25	-1.00	113th Wettest	Wettest since: 2011	2019
Jan 2011–Dec 2012 24-Month	-0.05	0.22	-0.27	51st Driest	Driest since: 2006	1934
	-0.05	0.22	-0.27	79th Wettest	Wettest since: 2011	2019
	Ties: 1897
Jan 2010–Dec 2012 36-Month	0.34	0.21	0.13	74th Driest	Driest since: 2007	1935
Jan 2010–Dec 2012 36-Month	0.34	0.21	0.13	55th Wettest	Wettest since: 2011	2020
Jan 2009–Dec 2012 48-Month	0.67	0.20	0.47	92nd Driest	Driest since: 2008	1936
Jan 2009–Dec 2012 48-Month	0.67	0.20	0.47	36th Wettest	Wettest since: 2011	1998
Jan 2008–Dec 2012 60-Month	0.77	0.19	0.58	102nd Driest	Driest since: 2009	1937
	0.77	0.19	0.58	25th Wettest	Wettest since: 2011	1999
	Ties: 1987

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

South Dakota, Climate Division 8

December 2012 Palmer Z-Index Rankings

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