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.

Washington, Climate Division 1

December 1963 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1963 1-Month	-1.15	-0.19	-0.96	39th Driest	Driest since: 1960	1985
	-1.15	-0.19	-0.96	92nd Wettest	Wettest since: 1962	1933
	Ties: 1926
Nov–Dec 1963 2-Month	0.44	-0.03	0.47	77th Driest	Driest since: 1961	1976
Nov–Dec 1963 2-Month	0.44	-0.03	0.47	54th Wettest	Wettest since: 1962	1998
Oct–Dec 1963 3-Month	0.94	-0.04	0.98	103rd Driest	Driest since: 1962	2013
Oct–Dec 1963 3-Month	0.94	-0.04	0.98	28th Wettest	Wettest since: 1955	1975
Sep–Dec 1963 4-Month	0.46	-0.03	0.49	85th Driest	Driest since: 1962	1976
Sep–Dec 1963 4-Month	0.46	-0.03	0.49	46th Wettest	Wettest since: 1959	1933
Aug–Dec 1963 5-Month	0.52	-0.05	0.57	100th Driest	Driest since: 1961	1929
Aug–Dec 1963 5-Month	0.52	-0.05	0.57	31st Wettest	Wettest since: 1962	1975
Jul–Dec 1963 6-Month	0.90	-0.08	0.98	119th Driest	Driest since: 1962	1930
Jul–Dec 1963 6-Month	0.90	-0.08	0.98	12th Wettest	Wettest since: 1955	1975
Jun–Dec 1963 7-Month	0.77	-0.06	0.83	116th Driest	Driest since: 1962	1944
	0.77	-0.06	0.83	15th Wettest	Wettest since: 1955	1997
	Ties: 1897
May–Dec 1963 8-Month	0.61	-0.04	0.65	111th Driest	Driest since: 1962	2023
May–Dec 1963 8-Month	0.61	-0.04	0.65	20th Wettest	Wettest since: 1955	1997
Apr–Dec 1963 9-Month	0.61	-0.04	0.65	113th Driest	Driest since: 1961	1935
Apr–Dec 1963 9-Month	0.61	-0.04	0.65	18th Wettest	Wettest since: 1962	1997
Mar–Dec 1963 10-Month	0.42	-0.05	0.47	99th Driest	Driest since: 1961	1992
Mar–Dec 1963 10-Month	0.42	-0.05	0.47	32nd Wettest	Wettest since: 1962	1997
Feb–Dec 1963 11-Month	0.36	-0.06	0.42	103rd Driest	Driest since: 1962	1992
	0.36	-0.06	0.42	28th Wettest	Wettest since: 1959	1997
	Ties: 1896
Jan–Dec 1963 12-Month	0.15	-0.06	0.21	86th Driest	Driest since: 1962	2019
Jan–Dec 1963 12-Month	0.15	-0.06	0.21	45th Wettest	Wettest since: 1961	1997
Jul 1962–Dec 1963 18-Month	0.29	-0.06	0.35	100th Driest	Driest since: 1962	2023
	0.29	-0.06	0.35	30th Wettest	Wettest since: 1956	1997
	Ties: 1902
Jan 1962–Dec 1963 24-Month	0.10	-0.05	0.15	80th Driest	Driest since: 1959	1930
Jan 1962–Dec 1963 24-Month	0.10	-0.05	0.15	50th Wettest	Wettest since: 1962	1997
Jan 1961–Dec 1963 36-Month	0.19	-0.05	0.24	98th Driest	Driest since: 1962	1930
Jan 1961–Dec 1963 36-Month	0.19	-0.05	0.24	31st Wettest	Wettest since: 1961	1997
Jan 1960–Dec 1963 48-Month	0.17	-0.05	0.22	95th Driest	Driest since: 1961	1925
Jan 1960–Dec 1963 48-Month	0.17	-0.05	0.22	33rd Wettest	Wettest since: 1962	1999
Jan 1959–Dec 1963 60-Month	0.22	-0.05	0.27	103rd Driest	Driest since: 1962	1926
Jan 1959–Dec 1963 60-Month	0.22	-0.05	0.27	24th Wettest	Wettest since: 1957	1903

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

Washington, Climate Division 1

December 1963 Palmer Z-Index Rankings

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