ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1991

-4-3-2-11234

Montana (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Anomaly:

Rank:

Mean:

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October - December 1991 Montana Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Western	-0.93	-0.93	36	0.00
2. Southwestern	0.43	0.16	76	0.27
3. North Central	-0.16	-0.24	54	0.08
4. Central	-0.14	-0.26	49	0.12
5. South Central	0.50	0.39	80	0.10
6. Northeastern	-0.66	-0.77	19	0.11
7. Southeastern	-0.38	-0.43	41	0.06

Citing This Page

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