Value Anomaly Rank Mean

Divisional Palmer Z-Index

August - October 1977

-4-3-2-11234

Massachusetts (Hover over a Climate Division)

Z-Index Palmer Z-Index : --

Anomaly: --

Rank: -- Driest

Mean: --

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*Signifies a tie

**Insufficient variability in the data record renders rank insignificant

August - October 1977 Massachusetts Divisional Palmer Z-Index

Climate Division	Value	Anomaly	Rank 130 Years	1901-2000 Mean
1. West	2.49	2.44	123	0.05
2. Central	1.95	1.95	118	-0.01
3. Coastal	1.94	1.89	116	0.05

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Divisional Mapping, published July 2025, retrieved on July 27, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/mapping