ValueRankAnomalyMean

Divisional Palmer Z-Index

November 1955 - January 1956

-4-3-2-11234

Iowa (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -3.02

Rank: Driest

Anomaly: -3.05

Mean: 0.02

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November 1955 - January 1956 Iowa Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Northwest	-2.13	5	-2.27	0.14
2. North Central	-2.22	5	-2.31	0.09
3. Northeast	-2.63	4	-2.69	0.06
4. West Central	-2.30	2	-2.41	0.10
5. Central	-2.48	2	-2.49	0.01
6. East Central	-3.05	1	-2.96	-0.08
7. Southwest	-2.61	1	-2.63	0.01
8. South Central	-2.82	1	-2.77	-0.05
9. Southeast	-2.99	2	-2.94	-0.05

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