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Divisional Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska or Hawaii. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Massachusetts, Climate Division 1

December 1973 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1973 1-Month	6.05	-0.08	6.13	130th Driest	Driest since: 1972	1943
December 1973 1-Month	6.05	-0.08	6.13	1st Wettest	Wettest to Date	1973
Nov–Dec 1973 2-Month	2.37	-0.12	2.49	125th Driest	Driest since: 1971	1928
Nov–Dec 1973 2-Month	2.37	-0.12	2.49	6th Wettest	Wettest since: 1972	1927
Oct–Dec 1973 3-Month	1.42	-0.07	1.49	113th Driest	Driest since: 1971	1928
Oct–Dec 1973 3-Month	1.42	-0.07	1.49	18th Wettest	Wettest since: 1972	2005
Sep–Dec 1973 4-Month	0.75	-0.06	0.81	103rd Driest	Driest since: 1971	1964
Sep–Dec 1973 4-Month	0.75	-0.06	0.81	28th Wettest	Wettest since: 1972	1907
Aug–Dec 1973 5-Month	0.65	-0.01	0.66	95th Driest	Driest since: 1971	1964
Aug–Dec 1973 5-Month	0.65	-0.01	0.66	36th Wettest	Wettest since: 1972	1955
Jul–Dec 1973 6-Month	0.46	-0.01	0.47	88th Driest	Driest since: 1971	1964
Jul–Dec 1973 6-Month	0.46	-0.01	0.47	43rd Wettest	Wettest since: 1972	1975
Jun–Dec 1973 7-Month	0.60	-0.02	0.62	97th Driest	Driest since: 1971	1964
Jun–Dec 1973 7-Month	0.60	-0.02	0.62	34th Wettest	Wettest since: 1972	1975
May–Dec 1973 8-Month	0.84	-0.04	0.88	105th Driest	Driest since: 1971	1964
May–Dec 1973 8-Month	0.84	-0.04	0.88	26th Wettest	Wettest since: 1972	1975
Apr–Dec 1973 9-Month	0.91	-0.04	0.95	110th Driest	Driest since: 1971	1964
Apr–Dec 1973 9-Month	0.91	-0.04	0.95	21st Wettest	Wettest since: 1972	1996
Mar–Dec 1973 10-Month	0.73	-0.03	0.76	105th Driest	Driest since: 1971	1964
	0.73	-0.03	0.76	26th Wettest	Wettest since: 1972	2011
	Ties: 1942
Feb–Dec 1973 11-Month	0.64	-0.03	0.67	105th Driest	Driest since: 1971	1964
Feb–Dec 1973 11-Month	0.64	-0.03	0.67	26th Wettest	Wettest since: 1972	2008
Jan–Dec 1973 12-Month	0.65	-0.03	0.68	106th Driest	Driest since: 1971	1964
Jan–Dec 1973 12-Month	0.65	-0.03	0.68	25th Wettest	Wettest since: 1972	1996
Jul 1972–Dec 1973 18-Month	0.70	-0.03	0.73	112th Driest	Driest since: 1971	1965
Jul 1972–Dec 1973 18-Month	0.70	-0.03	0.73	18th Wettest	Wettest since: 1972	1996
Jan 1972–Dec 1973 24-Month	0.92	-0.03	0.95	129th Driest	Driest since: 1972	1965
Jan 1972–Dec 1973 24-Month	0.92	-0.03	0.95	1st Wettest	Wettest to Date	1973
Jan 1971–Dec 1973 36-Month	0.58	-0.03	0.61	121st Driest	Driest since: 1972	1965
Jan 1971–Dec 1973 36-Month	0.58	-0.03	0.61	8th Wettest	Wettest since: 1938	1977
Jan 1970–Dec 1973 48-Month	0.24	-0.03	0.27	98th Driest	Driest since: 1972	1965
Jan 1970–Dec 1973 48-Month	0.24	-0.03	0.27	30th Wettest	Wettest since: 1956	1975
Jan 1969–Dec 1973 60-Month	0.29	-0.03	0.32	108th Driest	Driest since: 1972	1966
Jan 1969–Dec 1973 60-Month	0.29	-0.03	0.32	19th Wettest	Wettest since: 1956	1976

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Massachusetts, Climate Division 1

December 1973 Palmer Z-Index Rankings

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