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 1926 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1926 1-Month	-1.30	-0.20	-1.10	39th Driest	Driest since: 1925	2013
December 1926 1-Month	-1.30	-0.20	-1.10	92nd Wettest	Wettest since: 1924	2015
Nov–Dec 1926 2-Month	0.15	-0.04	0.19	73rd Driest	Driest since: 1925	2013
Nov–Dec 1926 2-Month	0.15	-0.04	0.19	58th Wettest	Wettest since: 1920	1973
Oct–Dec 1926 3-Month	0.54	-0.11	0.65	101st Driest	Driest since: 1925	2013
Oct–Dec 1926 3-Month	0.54	-0.11	0.65	30th Wettest	Wettest since: 1924	2016
Sep–Dec 1926 4-Month	0.44	-0.05	0.49	94th Driest	Driest since: 1925	1976
Sep–Dec 1926 4-Month	0.44	-0.05	0.49	37th Wettest	Wettest since: 1924	1973
Aug–Dec 1926 5-Month	0.69	-0.07	0.76	110th Driest	Driest since: 1925	1936
Aug–Dec 1926 5-Month	0.69	-0.07	0.76	21st Wettest	Wettest since: 1924	1968
Jul–Dec 1926 6-Month	0.20	-0.07	0.27	94th Driest	Driest since: 1925	2018
Jul–Dec 1926 6-Month	0.20	-0.07	0.27	37th Wettest	Wettest since: 1924	1920
Jun–Dec 1926 7-Month	-0.14	-0.06	-0.08	68th Driest	Driest since: 1925	2018
Jun–Dec 1926 7-Month	-0.14	-0.06	-0.08	63rd Wettest	Wettest since: 1924	1920
May–Dec 1926 8-Month	0.06	-0.05	0.11	82nd Driest	Driest since: 1925	2018
	0.06	-0.05	0.11	49th Wettest	Wettest since: 1920	1968
	Ties: 1895
Apr–Dec 1926 9-Month	-0.27	-0.03	-0.24	55th Driest	Driest since: 1925	1938
Apr–Dec 1926 9-Month	-0.27	-0.03	-0.24	76th Wettest	Wettest since: 1921	1937
Mar–Dec 1926 10-Month	-0.78	-0.05	-0.73	20th Driest	Driest since: 1925	1992
Mar–Dec 1926 10-Month	-0.78	-0.05	-0.73	111th Wettest	Wettest since: 1923	1920, 1937
Feb–Dec 1926 11-Month	-0.44	-0.04	-0.40	40th Driest	Driest since: 1925	2018
Feb–Dec 1926 11-Month	-0.44	-0.04	-0.40	91st Wettest	Wettest since: 1922	1983
Jan–Dec 1926 12-Month	-0.55	-0.04	-0.51	36th Driest	Driest since: 1925	1992
Jan–Dec 1926 12-Month	-0.55	-0.04	-0.51	95th Wettest	Wettest since: 1922	1983
Jul 1925–Dec 1926 18-Month	-0.67	-0.04	-0.63	19th Driest	Driest since: 1924	1992
Jul 1925–Dec 1926 18-Month	-0.67	-0.04	-0.63	111th Wettest	Wettest since: 1925	1983, 1996
Jan 1925–Dec 1926 24-Month	-0.60	-0.04	-0.56	20th Driest	Driest since: 1925	1930
Jan 1925–Dec 1926 24-Month	-0.60	-0.04	-0.56	110th Wettest	Wettest since: 1923	1984
Jan 1924–Dec 1926 36-Month	-0.79	-0.03	-0.76	4th Driest	Driest since: 1925	1930
Jan 1924–Dec 1926 36-Month	-0.79	-0.03	-0.76	125th Wettest	Wettest since: 1924	1997
Jan 1923–Dec 1926 48-Month	-0.77	-0.04	-0.73	1st Driest	Driest to Date	1926
Jan 1923–Dec 1926 48-Month	-0.77	-0.04	-0.73	127th Wettest	Wettest since: 1925	1998
Jan 1922–Dec 1926 60-Month	-0.67	-0.04	-0.63	1st Driest	Driest to Date	1926, 1932
Jan 1922–Dec 1926 60-Month	-0.67	-0.04	-0.63	126th Wettest	Wettest since: 1925	1999

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 1926 Palmer Z-Index Rankings

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