ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 2020

-4-3-2-11234

Iowa (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Anomaly:

Rank:

Mean:

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October - December 2020 Iowa Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Northwest	-0.97	-1.11	28	0.14
2. North Central	-0.72	-0.84	36	0.12
3. Northeast	0.51	0.44	85	0.08
4. West Central	-0.76	-0.88	31	0.11
5. Central	-0.32	-0.34	53	0.02
6. East Central	1.00	1.07	101	-0.08
7. Southwest	-1.25	-1.28	21	0.03
8. South Central	0.11	0.16	67	-0.05
9. Southeast	0.36	0.43	80	-0.07

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published June 2025, retrieved on June 17, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping