Value Anomaly Rank Mean

Divisional Palmer Z-Index

October - December 1905

-4-3-2-11234

Wyoming (Hover over a Climate Division)

Z-Index Palmer Z-Index : --

Anomaly: --

Rank: -- Driest

Mean: --

Text Labels

Download: CSV JSON XML

*Signifies a tie

**Insufficient variability in the data record renders rank insignificant

October - December 1905 Wyoming Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. Yellowstone Drainage	-1.31	-1.38	20	0.07
2. Snake Drainage	-2.08	-1.98	9	-0.10
3. Green and Bear Drainage	-0.90	-0.84	28	-0.06
4. Big Horn	-0.63	-0.76	32	0.13
5. Powder, Little Mo and Tongue Drainages	0.46	0.26	86	0.21
6. Belle Fourche Drainage	1.69	1.36	113	0.33
7. Cheyenne Niobrara Drainage	1.01	0.76	105	0.25
8. Lower Platte	-0.20	-0.50	50	0.30
9. Wind River	-0.35	-0.43	43	0.08
10. Upper Platte	-0.07	-0.20	65	0.13

Citing This Page

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