ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1925

-4-3-2-11234

Iowa (Hover over a Climate Division)

Z-IndexPalmer Z-Index: 0.91

Anomaly: 0.88

Rank: 36th Wettest

Mean: 0.03

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October - December 1925 Iowa Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Northwest	-0.58	-0.72	38	0.14
2. North Central	0.76	0.65	89	0.12
3. Northeast	1.35	1.27	109	0.08
4. West Central	0.22	0.10	75	0.11
5. Central	0.80	0.78	94	0.02
6. East Central	1.34	1.42	109	-0.08
7. Southwest	-0.06	-0.09	67	0.03
8. South Central	0.77	0.82	98	-0.05
9. Southeast	1.43	1.50	111	-0.07

Citing This Page

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