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 1908 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1908 1-Month	-0.89	-0.19	-0.70	46th Driest	Driest since: 1903	1985
December 1908 1-Month	-0.89	-0.19	-0.70	85th Wettest	Wettest since: 1907	1933
Nov–Dec 1908 2-Month	-0.58	-0.03	-0.55	37th Driest	Driest since: 1905	1976
Nov–Dec 1908 2-Month	-0.58	-0.03	-0.55	94th Wettest	Wettest since: 1907	1998
Oct–Dec 1908 3-Month	-0.38	-0.04	-0.34	46th Driest	Driest since: 1905	2013
	-0.38	-0.04	-0.34	85th Wettest	Wettest since: 1907	1975
	Ties: 1901
Sep–Dec 1908 4-Month	-0.90	-0.03	-0.87	26th Driest	Driest to Date	1976
Sep–Dec 1908 4-Month	-0.90	-0.03	-0.87	105th Wettest	Wettest since: 1907	1933
Aug–Dec 1908 5-Month	-0.62	-0.05	-0.57	34th Driest	Driest since: 1895	1929
Aug–Dec 1908 5-Month	-0.62	-0.05	-0.57	97th Wettest	Wettest since: 1907	1975
Jul–Dec 1908 6-Month	-0.77	-0.08	-0.69	25th Driest	Driest since: 1895	1930
	-0.77	-0.08	-0.69	106th Wettest	Wettest since: 1907	1975
	Ties: 1895
Jun–Dec 1908 7-Month	-0.80	-0.06	-0.74	25th Driest	Driest since: 1895	1944
Jun–Dec 1908 7-Month	-0.80	-0.06	-0.74	106th Wettest	Wettest since: 1907	1997
May–Dec 1908 8-Month	-0.52	-0.04	-0.48	33rd Driest	Driest to Date	2023
May–Dec 1908 8-Month	-0.52	-0.04	-0.48	98th Wettest	Wettest since: 1907	1997
Apr–Dec 1908 9-Month	-0.36	-0.04	-0.32	43rd Driest	Driest since: 1904	1935
Apr–Dec 1908 9-Month	-0.36	-0.04	-0.32	88th Wettest	Wettest since: 1907	1997
Mar–Dec 1908 10-Month	0.04	-0.05	0.09	73rd Driest	Driest since: 1907	1992
Mar–Dec 1908 10-Month	0.04	-0.05	0.09	58th Wettest	Wettest since: 1906	1997
Feb–Dec 1908 11-Month	0.07	-0.06	0.13	75th Driest	Driest since: 1907	1992
Feb–Dec 1908 11-Month	0.07	-0.06	0.13	56th Wettest	Wettest since: 1906	1997
Jan–Dec 1908 12-Month	0.05	-0.06	0.11	76th Driest	Driest since: 1907	2019
Jan–Dec 1908 12-Month	0.05	-0.06	0.11	55th Wettest	Wettest since: 1906	1997
Jul 1907–Dec 1908 18-Month	-0.01	-0.06	0.05	72nd Driest	Driest since: 1905	2023
Jul 1907–Dec 1908 18-Month	-0.01	-0.06	0.05	58th Wettest	Wettest since: 1907	1997
Jan 1907–Dec 1908 24-Month	-0.06	-0.05	-0.01	67th Driest	Driest to Date	1930
Jan 1907–Dec 1908 24-Month	-0.06	-0.05	-0.01	63rd Wettest	Wettest since: 1907	1997
Jan 1906–Dec 1908 36-Month	0.06	-0.05	0.11	84th Driest	Driest since: 1907	1930
Jan 1906–Dec 1908 36-Month	0.06	-0.05	0.11	45th Wettest	Wettest since: 1907	1997
Jan 1905–Dec 1908 48-Month	0.06	-0.05	0.11	81st Driest	Driest to Date	1925
Jan 1905–Dec 1908 48-Month	0.06	-0.05	0.11	47th Wettest	Wettest since: 1907	1999
Jan 1904–Dec 1908 60-Month	0.09	-0.05	0.14	87th Driest	Driest to Date	1926
Jan 1904–Dec 1908 60-Month	0.09	-0.05	0.14	40th Wettest	Wettest since: 1907	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 1908 Palmer Z-Index Rankings

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