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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 1986 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1986 1-Month	1.30	-0.08	1.38	102nd Driest	Driest since: 1985	1943
December 1986 1-Month	1.30	-0.08	1.38	29th Wettest	Wettest since: 1983	1973
Nov–Dec 1986 2-Month	1.60	-0.12	1.72	115th Driest	Driest since: 1985	1928
Nov–Dec 1986 2-Month	1.60	-0.12	1.72	16th Wettest	Wettest since: 1983	1927
Oct–Dec 1986 3-Month	0.97	-0.07	1.04	103rd Driest	Driest since: 1985	1928
Oct–Dec 1986 3-Month	0.97	-0.07	1.04	28th Wettest	Wettest since: 1983	2005
Sep–Dec 1986 4-Month	0.33	-0.06	0.39	82nd Driest	Driest since: 1985	1964
Sep–Dec 1986 4-Month	0.33	-0.06	0.39	49th Wettest	Wettest since: 1983	1907
Aug–Dec 1986 5-Month	0.43	-0.01	0.44	88th Driest	Driest since: 1984	1964
Aug–Dec 1986 5-Month	0.43	-0.01	0.44	43rd Wettest	Wettest since: 1985	1955
Jul–Dec 1986 6-Month	0.92	-0.01	0.93	105th Driest	Driest since: 1985	1964
Jul–Dec 1986 6-Month	0.92	-0.01	0.93	26th Wettest	Wettest since: 1977	1975
Jun–Dec 1986 7-Month	1.18	-0.02	1.20	112th Driest	Driest since: 1985	1964
Jun–Dec 1986 7-Month	1.18	-0.02	1.20	19th Wettest	Wettest since: 1977	1975
May–Dec 1986 8-Month	0.77	-0.04	0.81	103rd Driest	Driest since: 1985	1964
May–Dec 1986 8-Month	0.77	-0.04	0.81	28th Wettest	Wettest since: 1977	1975
Apr–Dec 1986 9-Month	0.32	-0.04	0.36	88th Driest	Driest since: 1985	1964
Apr–Dec 1986 9-Month	0.32	-0.04	0.36	43rd Wettest	Wettest since: 1983	1996
Mar–Dec 1986 10-Month	0.30	-0.03	0.33	94th Driest	Driest since: 1985	1964
Mar–Dec 1986 10-Month	0.30	-0.03	0.33	37th Wettest	Wettest since: 1983	2011
Feb–Dec 1986 11-Month	0.29	-0.03	0.32	92nd Driest	Driest since: 1985	1964
Feb–Dec 1986 11-Month	0.29	-0.03	0.32	39th Wettest	Wettest since: 1984	2008
Jan–Dec 1986 12-Month	0.37	-0.03	0.40	98th Driest	Driest since: 1985	1964
Jan–Dec 1986 12-Month	0.37	-0.03	0.40	33rd Wettest	Wettest since: 1983	1996
Jul 1985–Dec 1986 18-Month	0.37	-0.03	0.40	91st Driest	Driest since: 1985	1965
	0.37	-0.03	0.40	39th Wettest	Wettest since: 1977	1996
	Ties: 1974
Jan 1985–Dec 1986 24-Month	-0.05	-0.03	-0.02	59th Driest	Driest since: 1985	1965
Jan 1985–Dec 1986 24-Month	-0.05	-0.03	-0.02	71st Wettest	Wettest since: 1984	1973
Jan 1984–Dec 1986 36-Month	0.07	-0.03	0.10	71st Driest	Driest since: 1982	1965
Jan 1984–Dec 1986 36-Month	0.07	-0.03	0.10	58th Wettest	Wettest since: 1985	1977
Jan 1983–Dec 1986 48-Month	0.29	-0.03	0.32	107th Driest	Driest since: 1985	1965
Jan 1983–Dec 1986 48-Month	0.29	-0.03	0.32	21st Wettest	Wettest since: 1979	1975
Jan 1982–Dec 1986 60-Month	0.17	-0.03	0.20	94th Driest	Driest since: 1985	1966
Jan 1982–Dec 1986 60-Month	0.17	-0.03	0.20	33rd Wettest	Wettest since: 1979	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 1986 Palmer Z-Index Rankings

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