ValueAnomalyRankMean

Divisional Palmer Z-Index

September - November 1909

-4-3-2-11234

Idaho (Hover over a Climate Division)

Z-IndexPalmer Z-Index:

Anomaly:

Rank:

Mean:

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September - November 1909 Idaho Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Panhandle	1.13	1.23	111	-0.10
2. North Central Prairies	2.31	2.27	123	0.04
3. North Central Canyons	2.12	2.04	123	0.07
4. Central Mountains	1.92	1.92	124	0.01
5. Southwestern Valleys	1.04	1.07	117	-0.03
6. Southwestern Highlands	2.10	2.07	127	0.03
7. Central Plains	2.89	2.80	130	0.10
8. Northeastern Valleys	2.65	2.53	128	0.12
9. Upper Snake River Plains	2.38	2.32	127	0.06
10. Eastern Highlands	2.02	2.00	124	0.02

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published May 2025, retrieved on June 2, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping