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 1912 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1912 1-Month	-0.43	-0.20	-0.23	60th Driest	Driest since: 1911	2013
December 1912 1-Month	-0.43	-0.20	-0.23	71st Wettest	Wettest since: 1907	2015
Nov–Dec 1912 2-Month	-0.18	-0.04	-0.14	59th Driest	Driest since: 1911	2013
Nov–Dec 1912 2-Month	-0.18	-0.04	-0.14	72nd Wettest	Wettest since: 1910	1973
Oct–Dec 1912 3-Month	-0.11	-0.11	0.00	68th Driest	Driest since: 1911	2013
Oct–Dec 1912 3-Month	-0.11	-0.11	0.00	63rd Wettest	Wettest since: 1910	2016
Sep–Dec 1912 4-Month	0.53	-0.05	0.58	99th Driest	Driest since: 1911	1976
Sep–Dec 1912 4-Month	0.53	-0.05	0.58	32nd Wettest	Wettest since: 1909	1973
Aug–Dec 1912 5-Month	1.15	-0.07	1.22	120th Driest	Driest since: 1911	1936
Aug–Dec 1912 5-Month	1.15	-0.07	1.22	11th Wettest	Wettest since: 1899	1968
Jul–Dec 1912 6-Month	1.01	-0.07	1.08	121st Driest	Driest since: 1911	2018
Jul–Dec 1912 6-Month	1.01	-0.07	1.08	10th Wettest	Wettest to Date	1920
Jun–Dec 1912 7-Month	1.25	-0.06	1.31	124th Driest	Driest since: 1911	2018
Jun–Dec 1912 7-Month	1.25	-0.06	1.31	7th Wettest	Wettest to Date	1920
May–Dec 1912 8-Month	1.16	-0.05	1.21	127th Driest	Driest since: 1911	2018
May–Dec 1912 8-Month	1.16	-0.05	1.21	4th Wettest	Wettest to Date	1968
Apr–Dec 1912 9-Month	1.18	-0.03	1.21	126th Driest	Driest since: 1911	1938
Apr–Dec 1912 9-Month	1.18	-0.03	1.21	5th Wettest	Wettest since: 1896	1937
Mar–Dec 1912 10-Month	0.81	-0.05	0.86	114th Driest	Driest since: 1911	1992
Mar–Dec 1912 10-Month	0.81	-0.05	0.86	17th Wettest	Wettest since: 1899	1920, 1937
Feb–Dec 1912 11-Month	0.76	-0.04	0.80	113th Driest	Driest since: 1911	2018
Feb–Dec 1912 11-Month	0.76	-0.04	0.80	18th Wettest	Wettest since: 1902	1983
Jan–Dec 1912 12-Month	0.80	-0.04	0.84	118th Driest	Driest since: 1911	1992
Jan–Dec 1912 12-Month	0.80	-0.04	0.84	13th Wettest	Wettest since: 1902	1983
Jul 1911–Dec 1912 18-Month	0.31	-0.04	0.35	98th Driest	Driest since: 1911	1992
	0.31	-0.04	0.35	32nd Wettest	Wettest since: 1907	1983, 1996
	Ties: 1907
Jan 1911–Dec 1912 24-Month	0.10	-0.04	0.14	85th Driest	Driest since: 1911	1930
Jan 1911–Dec 1912 24-Month	0.10	-0.04	0.14	45th Wettest	Wettest since: 1907	1984
Jan 1910–Dec 1912 36-Month	-0.16	-0.03	-0.13	53rd Driest	Driest since: 1911	1930
Jan 1910–Dec 1912 36-Month	-0.16	-0.03	-0.13	76th Wettest	Wettest since: 1909	1997
Jan 1909–Dec 1912 48-Month	-0.05	-0.04	-0.01	73rd Driest	Driest since: 1911	1926
Jan 1909–Dec 1912 48-Month	-0.05	-0.04	-0.01	55th Wettest	Wettest since: 1909	1998
Jan 1908–Dec 1912 60-Month	-0.14	-0.04	-0.10	54th Driest	Driest since: 1911	1926, 1932
Jan 1908–Dec 1912 60-Month	-0.14	-0.04	-0.10	73rd Wettest	Wettest since: 1910	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 1912 Palmer Z-Index Rankings

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