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 1910 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1910 1-Month	-0.58	-0.19	-0.39	56th Driest	Driest since: 1909	1985
	-0.58	-0.19	-0.39	75th Wettest	Wettest since: 1907	1933
	Ties: 1898
Nov–Dec 1910 2-Month	0.85	-0.03	0.88	94th Driest	Driest since: 1908	1976
Nov–Dec 1910 2-Month	0.85	-0.03	0.88	37th Wettest	Wettest since: 1909	1998
Oct–Dec 1910 3-Month	1.17	-0.04	1.21	106th Driest	Driest since: 1908	2013
Oct–Dec 1910 3-Month	1.17	-0.04	1.21	25th Wettest	Wettest since: 1909	1975
Sep–Dec 1910 4-Month	0.80	-0.03	0.83	108th Driest	Driest since: 1909	1976
Sep–Dec 1910 4-Month	0.80	-0.03	0.83	23rd Wettest	Wettest since: 1906	1933
Aug–Dec 1910 5-Month	0.34	-0.05	0.39	90th Driest	Driest since: 1908	1929
Aug–Dec 1910 5-Month	0.34	-0.05	0.39	41st Wettest	Wettest since: 1909	1975
Jul–Dec 1910 6-Month	0.03	-0.08	0.11	74th Driest	Driest since: 1908	1930
Jul–Dec 1910 6-Month	0.03	-0.08	0.11	57th Wettest	Wettest since: 1909	1975
Jun–Dec 1910 7-Month	0.06	-0.06	0.12	73rd Driest	Driest since: 1908	1944
Jun–Dec 1910 7-Month	0.06	-0.06	0.12	58th Wettest	Wettest since: 1909	1997
May–Dec 1910 8-Month	-0.09	-0.04	-0.05	63rd Driest	Driest since: 1908	2023
May–Dec 1910 8-Month	-0.09	-0.04	-0.05	68th Wettest	Wettest since: 1909	1997
Apr–Dec 1910 9-Month	-0.17	-0.04	-0.13	55th Driest	Driest since: 1908	1935
Apr–Dec 1910 9-Month	-0.17	-0.04	-0.13	76th Wettest	Wettest since: 1909	1997
Mar–Dec 1910 10-Month	-0.29	-0.05	-0.24	46th Driest	Driest to Date	1992
Mar–Dec 1910 10-Month	-0.29	-0.05	-0.24	85th Wettest	Wettest since: 1909	1997
Feb–Dec 1910 11-Month	-0.26	-0.06	-0.20	55th Driest	Driest since: 1895	1992
Feb–Dec 1910 11-Month	-0.26	-0.06	-0.20	76th Wettest	Wettest since: 1909	1997
Jan–Dec 1910 12-Month	-0.20	-0.06	-0.14	55th Driest	Driest since: 1895	2019
Jan–Dec 1910 12-Month	-0.20	-0.06	-0.14	76th Wettest	Wettest since: 1909	1997
Jul 1909–Dec 1910 18-Month	0.10	-0.06	0.16	84th Driest	Driest since: 1909	2023
Jul 1909–Dec 1910 18-Month	0.10	-0.06	0.16	46th Wettest	Wettest since: 1907	1997
Jan 1909–Dec 1910 24-Month	0.01	-0.05	0.06	75th Driest	Driest since: 1908	1930
Jan 1909–Dec 1910 24-Month	0.01	-0.05	0.06	55th Wettest	Wettest since: 1909	1997
Jan 1908–Dec 1910 36-Month	0.02	-0.05	0.07	75th Driest	Driest to Date	1930
Jan 1908–Dec 1910 36-Month	0.02	-0.05	0.07	54th Wettest	Wettest since: 1909	1997
Jan 1907–Dec 1910 48-Month	-0.02	-0.05	0.03	73rd Driest	Driest to Date	1925
Jan 1907–Dec 1910 48-Month	-0.02	-0.05	0.03	55th Wettest	Wettest since: 1909	1999
Jan 1906–Dec 1910 60-Month	0.04	-0.05	0.09	76th Driest	Driest to Date	1926
Jan 1906–Dec 1910 60-Month	0.04	-0.05	0.09	51st Wettest	Wettest since: 1909	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 1910 Palmer Z-Index Rankings

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