ValueRankAnomalyMean

Divisional Palmer Z-Index

July - September 1967

-4-3-2-11234

Oregon (Hover over a Climate Division)

Z-IndexPalmer Z-Index: -1.78

Rank: 3rd Driest

Anomaly: -1.83

Mean: 0.05

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July - September 1967 Oregon Divisional Palmer Z-Index

Climate Division	Value	Rank 130 Years	Anomaly	1901-2000 Mean
1. Coastal Area	-1.98	4	-1.96	-0.02
2. Willamette Valley	-2.00	4	-2.01	0.01
3. Southwestern Valleys	-1.64	7	-1.69	0.05
4. Northern Cascades	-1.91	2	-1.94	0.04
5. High Plateau	-1.57	7	-1.68	0.11
6. North Central	-2.10	3	-2.13	0.03
7. South Central	-1.25	24	-1.40	0.15
8. Northeast	-1.63	14	-1.62	-0.01
9. Southeast	0.43	88	0.39	0.04

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 11, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping