ValueRankAnomalyMean

Divisional Palmer Z-Index

September - November 1950

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Iowa (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -1.51

Rank: 20th Driest

Anomaly: -1.61

Mean: 0.10

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September - November 1950 Iowa Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Northwest	-0.57	38	-0.76	0.19
2. North Central	-0.76	39	-0.91	0.16
3. Northeast	-1.53	17	-1.64	0.11
4. West Central	-0.82	36	-0.98	0.17
5. Central	-1.96	8	-2.07	0.11
6. East Central	-2.10	13	-2.13	0.02
7. Southwest	-0.11	66	-0.17	0.06
8. South Central	-1.99	9	-2.03	0.04
9. Southeast	-2.38	5	-2.41	0.03

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 11, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping