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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.

New Hampshire, Climate Division 1

December 1977 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1977 1-Month	1.37	-0.23	1.60	105th Driest	Driest since: 1976	1896
December 1977 1-Month	1.37	-0.23	1.60	26th Wettest	Wettest since: 1973	1973
Nov–Dec 1977 2-Month	0.62	-0.33	0.95	105th Driest	Driest since: 1976	1904
Nov–Dec 1977 2-Month	0.62	-0.33	0.95	26th Wettest	Wettest since: 1973	1983
Oct–Dec 1977 3-Month	1.57	-0.23	1.80	119th Driest	Driest since: 1976	1914
Oct–Dec 1977 3-Month	1.57	-0.23	1.80	12th Wettest	Wettest since: 1973	2005
Sep–Dec 1977 4-Month	1.84	-0.15	1.99	125th Driest	Driest since: 1976	1908
Sep–Dec 1977 4-Month	1.84	-0.15	1.99	6th Wettest	Wettest since: 1954	2005
Aug–Dec 1977 5-Month	1.68	-0.12	1.80	123rd Driest	Driest since: 1976	1908
Aug–Dec 1977 5-Month	1.68	-0.12	1.80	8th Wettest	Wettest since: 1954	2005
Jul–Dec 1977 6-Month	1.00	-0.10	1.10	111th Driest	Driest since: 1975	1908
	1.00	-0.10	1.10	20th Wettest	Wettest since: 1976	2005, 2008
	Ties: 1932
Jun–Dec 1977 7-Month	1.01	-0.10	1.11	113th Driest	Driest since: 1976	1908
Jun–Dec 1977 7-Month	1.01	-0.10	1.11	18th Wettest	Wettest since: 1973	2008
May–Dec 1977 8-Month	0.45	-0.10	0.55	95th Driest	Driest since: 1975	1908
May–Dec 1977 8-Month	0.45	-0.10	0.55	36th Wettest	Wettest since: 1976	1954
Apr–Dec 1977 9-Month	0.51	-0.10	0.61	97th Driest	Driest since: 1975	2001
	0.51	-0.10	0.61	34th Wettest	Wettest since: 1976	1954
	Ties: 1972
Mar–Dec 1977 10-Month	0.59	-0.08	0.67	104th Driest	Driest since: 1975	1908
	0.59	-0.08	0.67	27th Wettest	Wettest since: 1976	1954
	Ties: 1940
Feb–Dec 1977 11-Month	0.50	-0.08	0.58	100th Driest	Driest since: 1975	1921
Feb–Dec 1977 11-Month	0.50	-0.08	0.58	31st Wettest	Wettest since: 1976	1954
Jan–Dec 1977 12-Month	0.44	-0.07	0.51	101st Driest	Driest since: 1975	1921
	0.44	-0.07	0.51	30th Wettest	Wettest since: 1976	1954
	Ties: 1938
Jul 1976–Dec 1977 18-Month	0.68	-0.08	0.76	114th Driest	Driest since: 1975	1948
Jul 1976–Dec 1977 18-Month	0.68	-0.08	0.76	16th Wettest	Wettest since: 1976	2008
Jan 1976–Dec 1977 24-Month	0.76	-0.07	0.83	121st Driest	Driest since: 1976	1949
Jan 1976–Dec 1977 24-Month	0.76	-0.07	0.83	9th Wettest	Wettest since: 1974	2006
Jan 1975–Dec 1977 36-Month	0.50	-0.08	0.58	115th Driest	Driest since: 1973	1949
Jan 1975–Dec 1977 36-Month	0.50	-0.08	0.58	14th Wettest	Wettest since: 1976	2008
Jan 1974–Dec 1977 48-Month	0.58	-0.08	0.66	119th Driest	Driest since: 1974	1911
	0.58	-0.08	0.66	9th Wettest	Wettest since: 1976	2008
	Ties: 1974
Jan 1973–Dec 1977 60-Month	0.70	-0.08	0.78	120th Driest	Driest since: 1975	1967
Jan 1973–Dec 1977 60-Month	0.70	-0.08	0.78	7th Wettest	Wettest since: 1976	2009

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

New Hampshire, Climate Division 1

December 1977 Palmer Z-Index Rankings

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