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.

Iowa, Climate Division 8

December 1950 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1950 1-Month	-1.82	-0.11	-1.71	11th Driest	Driest since: 1937	1910
December 1950 1-Month	-1.82	-0.11	-1.71	120th Wettest	Wettest since: 1949	2015
Nov–Dec 1950 2-Month	-1.81	-0.08	-1.73	14th Driest	Driest since: 1939	1917
Nov–Dec 1950 2-Month	-1.81	-0.08	-1.73	117th Wettest	Wettest since: 1949	2015
Oct–Dec 1950 3-Month	-2.05	-0.05	-2.00	8th Driest	Driest since: 1933	1953
Oct–Dec 1950 3-Month	-2.05	-0.05	-2.00	123rd Wettest	Wettest since: 1949	1931
Sep–Dec 1950 4-Month	-1.95	0.00	-1.95	10th Driest	Driest since: 1939	1953
Sep–Dec 1950 4-Month	-1.95	0.00	-1.95	121st Wettest	Wettest since: 1949	1931, 1941
Aug–Dec 1950 5-Month	-1.41	-0.02	-1.39	18th Driest	Driest since: 1939	1953
	-1.41	-0.02	-1.39	113th Wettest	Wettest since: 1949	1902
	Ties: 1899
Jul–Dec 1950 6-Month	-1.08	0.01	-1.09	28th Driest	Driest since: 1947	1953
Jul–Dec 1950 6-Month	-1.08	0.01	-1.09	103rd Wettest	Wettest since: 1949	1902
Jun–Dec 1950 7-Month	-0.71	0.02	-0.73	35th Driest	Driest since: 1948	1953
	-0.71	0.02	-0.73	96th Wettest	Wettest since: 1949	1902
	Ties: 1912
May–Dec 1950 8-Month	-0.40	0.04	-0.44	50th Driest	Driest since: 1949	1953
May–Dec 1950 8-Month	-0.40	0.04	-0.44	81st Wettest	Wettest since: 1947	1902
Apr–Dec 1950 9-Month	-0.36	0.05	-0.41	46th Driest	Driest since: 1949	1988
Apr–Dec 1950 9-Month	-0.36	0.05	-0.41	85th Wettest	Wettest since: 1947	2008
Mar–Dec 1950 10-Month	-0.45	0.03	-0.48	39th Driest	Driest since: 1949	1934
	-0.45	0.03	-0.48	92nd Wettest	Wettest since: 1947	1993
	Ties: 1912, 1923
Feb–Dec 1950 11-Month	-0.27	0.04	-0.31	45th Driest	Driest since: 1949	1934
Feb–Dec 1950 11-Month	-0.27	0.04	-0.31	86th Wettest	Wettest since: 1947	2008
Jan–Dec 1950 12-Month	-0.19	0.04	-0.23	49th Driest	Driest since: 1948	1956
Jan–Dec 1950 12-Month	-0.19	0.04	-0.23	82nd Wettest	Wettest since: 1949	1993
Jul 1949–Dec 1950 18-Month	-0.34	0.04	-0.38	41st Driest	Driest since: 1948	1956
Jul 1949–Dec 1950 18-Month	-0.34	0.04	-0.38	89th Wettest	Wettest since: 1949	1993
Jan 1949–Dec 1950 24-Month	-0.14	0.04	-0.18	45th Driest	Driest since: 1949	1934
Jan 1949–Dec 1950 24-Month	-0.14	0.04	-0.18	85th Wettest	Wettest since: 1948	2009
Jan 1948–Dec 1950 36-Month	-0.30	0.04	-0.34	26th Driest	Driest since: 1940	1956
Jan 1948–Dec 1950 36-Month	-0.30	0.04	-0.34	103rd Wettest	Wettest since: 1949	2010
Jan 1947–Dec 1950 48-Month	-0.12	0.04	-0.16	37th Driest	Driest since: 1942	1956
Jan 1947–Dec 1950 48-Month	-0.12	0.04	-0.16	91st Wettest	Wettest since: 1949	2010
Jan 1946–Dec 1950 60-Month	0.04	0.04	0.00	53rd Driest	Driest since: 1943	1957
Jan 1946–Dec 1950 60-Month	0.04	0.04	0.00	74th Wettest	Wettest since: 1949	2011

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

Iowa, Climate Division 8

December 1950 Palmer Z-Index Rankings

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