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 1896 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1896 1-Month	0.63	-0.20	0.83	88th Driest	Driest to Date	2013
December 1896 1-Month	0.63	-0.20	0.83	43rd Wettest	Wettest since: 1895	2015
Nov–Dec 1896 2-Month	2.47	-0.04	2.51	122nd Driest	Driest since: 1895	2013
Nov–Dec 1896 2-Month	2.47	-0.04	2.51	9th Wettest	Wettest to Date	1973
Oct–Dec 1896 3-Month	1.46	-0.11	1.57	121st Driest	Driest since: 1895	2013
Oct–Dec 1896 3-Month	1.46	-0.11	1.57	10th Wettest	Wettest to Date	2016
Sep–Dec 1896 4-Month	0.82	-0.05	0.87	115th Driest	Driest since: 1895	1976
Sep–Dec 1896 4-Month	0.82	-0.05	0.87	16th Wettest	Wettest to Date	1973
Aug–Dec 1896 5-Month	0.79	-0.07	0.86	114th Driest	Driest since: 1895	1936
Aug–Dec 1896 5-Month	0.79	-0.07	0.86	17th Wettest	Wettest to Date	1968
Jul–Dec 1896 6-Month	0.47	-0.07	0.54	108th Driest	Driest since: 1895	2018
Jul–Dec 1896 6-Month	0.47	-0.07	0.54	23rd Wettest	Wettest to Date	1920
Jun–Dec 1896 7-Month	0.29	-0.06	0.35	94th Driest	Driest since: 1895	2018
Jun–Dec 1896 7-Month	0.29	-0.06	0.35	37th Wettest	Wettest to Date	1920
May–Dec 1896 8-Month	1.07	-0.05	1.12	124th Driest	Driest since: 1895	2018
May–Dec 1896 8-Month	1.07	-0.05	1.12	7th Wettest	Wettest to Date	1968
Apr–Dec 1896 9-Month	1.60	-0.03	1.63	129th Driest	Driest since: 1895	1938
Apr–Dec 1896 9-Month	1.60	-0.03	1.63	2nd Wettest	Wettest to Date	1937
Mar–Dec 1896 10-Month	1.29	-0.05	1.34	127th Driest	Driest since: 1895	1992
Mar–Dec 1896 10-Month	1.29	-0.05	1.34	4th Wettest	Wettest to Date	1920, 1937
Feb–Dec 1896 11-Month	1.07	-0.04	1.11	126th Driest	Driest since: 1895	2018
Feb–Dec 1896 11-Month	1.07	-0.04	1.11	5th Wettest	Wettest to Date	1983
Jan–Dec 1896 12-Month	1.10	-0.04	1.14	126th Driest	Driest since: 1895	1992
Jan–Dec 1896 12-Month	1.10	-0.04	1.14	5th Wettest	Wettest to Date	1983
Jul 1895–Dec 1896 18-Month	0.60	-0.04	0.64	118th Driest	Driest to Date	1992
Jul 1895–Dec 1896 18-Month	0.60	-0.04	0.64	12th Wettest	Wettest to Date	1983, 1996
Jan 1895–Dec 1896 24-Month	0.52	-0.04	0.56	122nd Driest	Driest to Date	1930
Jan 1895–Dec 1896 24-Month	0.52	-0.04	0.56	8th Wettest	Wettest to Date	1984

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 28, 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 1896 Palmer Z-Index Rankings

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