ValueAnomalyRankMean

Divisional Palmer Z-Index

October - December 1903

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Idaho (Hover over a Climate Division)

Z-IndexPalmer Z-Index: 0.54

Anomaly: 0.55

Rank: 47th Wettest

Mean: -0.01

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October - December 1903 Idaho Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Panhandle	-0.74	-0.50	51	-0.24
2. North Central Prairies	1.16	1.17	106	-0.01
3. North Central Canyons	1.80	1.74	117	0.06
4. Central Mountains	0.60	0.62	95	-0.02
5. Southwestern Valleys	0.76	0.79	96	-0.03
6. Southwestern Highlands	0.15	0.14	67	0.01
7. Central Plains	-0.34	-0.40	48	0.06
8. Northeastern Valleys	2.28	2.11	125	0.17
9. Upper Snake River Plains	-0.29	-0.31	54	0.02
10. Eastern Highlands	-0.52	-0.47	52	-0.05

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published March 2025, retrieved on April 3, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping