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.

Oregon, Climate Division 1

December 1902 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1902 1-Month	1.85	-0.20	2.05	117th Driest	Driest since: 1901	2013
December 1902 1-Month	1.85	-0.20	2.05	14th Wettest	Wettest to Date	2015
Nov–Dec 1902 2-Month	2.49	-0.04	2.53	123rd Driest	Driest since: 1901	2013
Nov–Dec 1902 2-Month	2.49	-0.04	2.53	8th Wettest	Wettest to Date	1973
Oct–Dec 1902 3-Month	1.08	-0.11	1.19	114th Driest	Driest since: 1901	2013
Oct–Dec 1902 3-Month	1.08	-0.11	1.19	17th Wettest	Wettest since: 1896	2016
Sep–Dec 1902 4-Month	0.65	-0.05	0.70	108th Driest	Driest since: 1901	1976
Sep–Dec 1902 4-Month	0.65	-0.05	0.70	23rd Wettest	Wettest since: 1899	1973
Aug–Dec 1902 5-Month	0.38	-0.07	0.45	102nd Driest	Driest since: 1901	1936
Aug–Dec 1902 5-Month	0.38	-0.07	0.45	29th Wettest	Wettest since: 1899	1968
Jul–Dec 1902 6-Month	0.69	-0.07	0.76	114th Driest	Driest since: 1901	2018
Jul–Dec 1902 6-Month	0.69	-0.07	0.76	17th Wettest	Wettest since: 1899	1920
Jun–Dec 1902 7-Month	0.46	-0.06	0.52	103rd Driest	Driest since: 1901	2018
Jun–Dec 1902 7-Month	0.46	-0.06	0.52	28th Wettest	Wettest since: 1899	1920
May–Dec 1902 8-Month	0.53	-0.05	0.58	102nd Driest	Driest since: 1901	2018
May–Dec 1902 8-Month	0.53	-0.05	0.58	29th Wettest	Wettest since: 1900	1968
Apr–Dec 1902 9-Month	0.71	-0.03	0.74	111th Driest	Driest since: 1901	1938
Apr–Dec 1902 9-Month	0.71	-0.03	0.74	20th Wettest	Wettest since: 1899	1937
Mar–Dec 1902 10-Month	0.80	-0.05	0.85	112th Driest	Driest since: 1901	1992
Mar–Dec 1902 10-Month	0.80	-0.05	0.85	19th Wettest	Wettest since: 1899	1920, 1937
Feb–Dec 1902 11-Month	1.23	-0.04	1.27	127th Driest	Driest since: 1901	2018
Feb–Dec 1902 11-Month	1.23	-0.04	1.27	4th Wettest	Wettest to Date	1983
Jan–Dec 1902 12-Month	0.95	-0.04	0.99	122nd Driest	Driest since: 1901	1992
Jan–Dec 1902 12-Month	0.95	-0.04	0.99	9th Wettest	Wettest since: 1896	1983
Jul 1901–Dec 1902 18-Month	0.56	-0.04	0.60	115th Driest	Driest since: 1901	1992
Jul 1901–Dec 1902 18-Month	0.56	-0.04	0.60	15th Wettest	Wettest since: 1896	1983, 1996
Jan 1901–Dec 1902 24-Month	0.50	-0.04	0.54	119th Driest	Driest since: 1901	1930
Jan 1901–Dec 1902 24-Month	0.50	-0.04	0.54	11th Wettest	Wettest since: 1897	1984
Jan 1900–Dec 1902 36-Month	0.35	-0.03	0.38	115th Driest	Driest since: 1901	1930
Jan 1900–Dec 1902 36-Month	0.35	-0.03	0.38	14th Wettest	Wettest since: 1897	1997
Jan 1899–Dec 1902 48-Month	0.45	-0.04	0.49	121st Driest	Driest since: 1901	1926
Jan 1899–Dec 1902 48-Month	0.45	-0.04	0.49	7th Wettest	Wettest to Date	1998
Jan 1898–Dec 1902 60-Month	0.25	-0.04	0.29	105th Driest	Driest since: 1901	1926, 1932
Jan 1898–Dec 1902 60-Month	0.25	-0.04	0.29	22nd Wettest	Wettest since: 1900	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 26, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Oregon, Climate Division 1

December 1902 Palmer Z-Index Rankings

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