ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1954

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Montana (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -1.91

Anomaly: -2.04

Rank: 4th Driest

Mean: 0.13

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October - December 1954 Montana Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Western	-1.57	-1.57	24	0.00
2. Southwestern	-2.42	-2.69	4	0.27
3. North Central	-1.23	-1.30	7	0.08
4. Central	-1.56	-1.68	9	0.12
5. South Central	-2.27	-2.37	2	0.10
6. Northeastern	-0.70	-0.81	15	0.11
7. Southeastern	-1.53	-1.59	2	0.06

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published June 2025, retrieved on June 26, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping