Climate at a Glance | Divisional Rankings | National Centers for Environmental Information (NCEI)

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 2018 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 2018 1-Month	-0.19	-0.23	0.04	65th Driest	Driest since: 2002	1896
	-0.19	-0.23	0.04	66th Wettest	Wettest since: 2017	1973
	Ties: 1937
Nov–Dec 2018 2-Month	1.35	-0.33	1.68	114th Driest	Driest since: 2017	1904
Nov–Dec 2018 2-Month	1.35	-0.33	1.68	17th Wettest	Wettest since: 2008	1983
Oct–Dec 2018 3-Month	1.19	-0.23	1.42	115th Driest	Driest since: 2017	1914
Oct–Dec 2018 3-Month	1.19	-0.23	1.42	16th Wettest	Wettest since: 2010	2005
Sep–Dec 2018 4-Month	0.63	-0.15	0.78	103rd Driest	Driest since: 2017	1908
Sep–Dec 2018 4-Month	0.63	-0.15	0.78	28th Wettest	Wettest since: 2010	2005
Aug–Dec 2018 5-Month	0.48	-0.12	0.60	99th Driest	Driest since: 2017	1908
Aug–Dec 2018 5-Month	0.48	-0.12	0.60	32nd Wettest	Wettest since: 2011	2005
Jul–Dec 2018 6-Month	0.46	-0.10	0.56	91st Driest	Driest since: 2017	1908
Jul–Dec 2018 6-Month	0.46	-0.10	0.56	40th Wettest	Wettest since: 2011	2005, 2008
Jun–Dec 2018 7-Month	0.21	-0.10	0.31	79th Driest	Driest since: 2016	1908
	0.21	-0.10	0.31	52nd Wettest	Wettest since: 2017	2008
	Ties: 1957, 1997
May–Dec 2018 8-Month	-0.16	-0.10	-0.06	60th Driest	Driest since: 2016	1908
	-0.16	-0.10	-0.06	71st Wettest	Wettest since: 2017	1954
	Ties: 1924, 1985
Apr–Dec 2018 9-Month	0.17	-0.10	0.27	84th Driest	Driest since: 2016	2001
Apr–Dec 2018 9-Month	0.17	-0.10	0.27	47th Wettest	Wettest since: 2017	1954
Mar–Dec 2018 10-Month	0.09	-0.08	0.17	77th Driest	Driest since: 2016	1908
Mar–Dec 2018 10-Month	0.09	-0.08	0.17	54th Wettest	Wettest since: 2017	1954
Feb–Dec 2018 11-Month	0.11	-0.08	0.19	82nd Driest	Driest since: 2016	1921
Feb–Dec 2018 11-Month	0.11	-0.08	0.19	49th Wettest	Wettest since: 2017	1954
Jan–Dec 2018 12-Month	0.25	-0.07	0.32	91st Driest	Driest since: 2016	1921
Jan–Dec 2018 12-Month	0.25	-0.07	0.32	40th Wettest	Wettest since: 2017	1954
Jul 2017–Dec 2018 18-Month	0.19	-0.08	0.27	82nd Driest	Driest since: 2017	1948
	0.19	-0.08	0.27	48th Wettest	Wettest since: 2014	2008
	Ties: 1989
Jan 2017–Dec 2018 24-Month	0.36	-0.07	0.43	100th Driest	Driest since: 2017	1949
Jan 2017–Dec 2018 24-Month	0.36	-0.07	0.43	30th Wettest	Wettest since: 2012	2006
Jan 2016–Dec 2018 36-Month	0.15	-0.08	0.23	88th Driest	Driest since: 2017	1949
	0.15	-0.08	0.23	41st Wettest	Wettest since: 2015	2008
	Ties: 1969
Jan 2015–Dec 2018 48-Month	0.14	-0.08	0.22	85th Driest	Driest since: 2016	1911
Jan 2015–Dec 2018 48-Month	0.14	-0.08	0.22	43rd Wettest	Wettest since: 2017	2008
Jan 2014–Dec 2018 60-Month	0.18	-0.08	0.26	97th Driest	Driest since: 2017	1967
	0.18	-0.08	0.26	30th Wettest	Wettest since: 2015	2009
	Ties: 1955

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 2018 Palmer Z-Index Rankings

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