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 4

December 1980 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1980 1-Month	-1.67	0.05	-1.72	8th Driest	Driest since: 1976	1976
December 1980 1-Month	-1.67	0.05	-1.72	123rd Wettest	Wettest since: 1979	2015
Nov–Dec 1980 2-Month	-2.04	0.10	-2.14	4th Driest	Driest since: 1976	1976
Nov–Dec 1980 2-Month	-2.04	0.10	-2.14	127th Wettest	Wettest since: 1979	2015
Oct–Dec 1980 3-Month	-1.37	0.11	-1.48	16th Driest	Driest since: 1976	1955
Oct–Dec 1980 3-Month	-1.37	0.11	-1.48	115th Wettest	Wettest since: 1979	2015
Sep–Dec 1980 4-Month	-1.66	0.14	-1.80	7th Driest	Driest since: 1976	1939
Sep–Dec 1980 4-Month	-1.66	0.14	-1.80	124th Wettest	Wettest since: 1979	2015
Aug–Dec 1980 5-Month	-0.77	0.12	-0.89	30th Driest	Driest since: 1976	1976
Aug–Dec 1980 5-Month	-0.77	0.12	-0.89	101st Wettest	Wettest since: 1979	2015
Jul–Dec 1980 6-Month	-1.09	0.13	-1.22	21st Driest	Driest since: 1976	1976
Jul–Dec 1980 6-Month	-1.09	0.13	-1.22	110th Wettest	Wettest since: 1979	2015
Jun–Dec 1980 7-Month	-1.09	0.13	-1.22	19th Driest	Driest since: 1976	1976
Jun–Dec 1980 7-Month	-1.09	0.13	-1.22	112th Wettest	Wettest since: 1979	2015
May–Dec 1980 8-Month	-1.13	0.13	-1.26	16th Driest	Driest since: 1976	1936
May–Dec 1980 8-Month	-1.13	0.13	-1.26	115th Wettest	Wettest since: 1979	2015
Apr–Dec 1980 9-Month	-1.20	0.13	-1.33	13th Driest	Driest since: 1976	1934
Apr–Dec 1980 9-Month	-1.20	0.13	-1.33	118th Wettest	Wettest since: 1979	2015
Mar–Dec 1980 10-Month	-1.13	0.10	-1.23	15th Driest	Driest since: 1976	1934
Mar–Dec 1980 10-Month	-1.13	0.10	-1.23	116th Wettest	Wettest since: 1979	2015
Feb–Dec 1980 11-Month	-1.03	0.11	-1.14	16th Driest	Driest since: 1976	1934
Feb–Dec 1980 11-Month	-1.03	0.11	-1.14	115th Wettest	Wettest since: 1979	2015
Jan–Dec 1980 12-Month	-0.84	0.11	-0.95	17th Driest	Driest since: 1976	1934
	-0.84	0.11	-0.95	114th Wettest	Wettest since: 1979	2015
	Ties: 1911
Jul 1979–Dec 1980 18-Month	-0.31	0.13	-0.44	34th Driest	Driest since: 1977	1956
Jul 1979–Dec 1980 18-Month	-0.31	0.13	-0.44	96th Wettest	Wettest since: 1979	2015
Jan 1979–Dec 1980 24-Month	-0.02	0.12	-0.14	51st Driest	Driest since: 1977	1934
Jan 1979–Dec 1980 24-Month	-0.02	0.12	-0.14	79th Wettest	Wettest since: 1979	2015
Jan 1978–Dec 1980 36-Month	0.19	0.12	0.07	69th Driest	Driest since: 1978	1936
Jan 1978–Dec 1980 36-Month	0.19	0.12	0.07	60th Wettest	Wettest since: 1979	2009
Jan 1977–Dec 1980 48-Month	0.06	0.12	-0.06	52nd Driest	Driest since: 1979	1936
	0.06	0.12	-0.06	76th Wettest	Wettest since: 1975	2010
	Ties: 1970
Jan 1976–Dec 1980 60-Month	-0.23	0.11	-0.34	21st Driest	Driest since: 1978	1937
Jan 1976–Dec 1980 60-Month	-0.23	0.11	-0.34	106th Wettest	Wettest since: 1979	2018

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 4

December 1980 Palmer Z-Index Rankings

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