ValueAnomalyRankMean

Divisional Palmer Z-Index

September - November 1989

-4-3-2-11234

Illinois (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Anomaly:

Rank:

Mean:

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September - November 1989 Illinois Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Northwest	0.01	-0.08	65	0.09
2. Northeast	0.78	0.75	88	0.03
3. West	-1.24	-1.25	25	0.01
4. Central	0.09	0.03	72	0.06
5. East	0.57	0.55	89	0.02
6. West Southwest	-1.11	-1.21	26	0.10
7. East Southeast	0.57	0.51	77	0.07
8. Southwest	-1.01	-1.05	30	0.04
9. Southeast	-0.64	-0.68	42	0.04

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published June 2025, retrieved on June 16, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping