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 1979 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1979 1-Month	-0.03	-0.20	0.17	65th Driest	Driest since: 1978	2013
December 1979 1-Month	-0.03	-0.20	0.17	66th Wettest	Wettest since: 1977	2015
Nov–Dec 1979 2-Month	-0.72	-0.04	-0.68	39th Driest	Driest since: 1978	2013
Nov–Dec 1979 2-Month	-0.72	-0.04	-0.68	92nd Wettest	Wettest since: 1977	1973
Oct–Dec 1979 3-Month	0.04	-0.11	0.15	77th Driest	Driest since: 1978	2013
Oct–Dec 1979 3-Month	0.04	-0.11	0.15	54th Wettest	Wettest since: 1977	2016
Sep–Dec 1979 4-Month	0.14	-0.05	0.19	80th Driest	Driest since: 1978	1976
	0.14	-0.05	0.19	51st Wettest	Wettest since: 1977	1973
	Ties: 1975
Aug–Dec 1979 5-Month	0.10	-0.07	0.17	84th Driest	Driest since: 1978	1936
	0.10	-0.07	0.17	47th Wettest	Wettest since: 1977	1968
	Ties: 1927
Jul–Dec 1979 6-Month	0.11	-0.07	0.18	87th Driest	Driest since: 1978	2018
Jul–Dec 1979 6-Month	0.11	-0.07	0.18	44th Wettest	Wettest since: 1977	1920
Jun–Dec 1979 7-Month	-0.05	-0.06	0.01	81st Driest	Driest since: 1976	2018
Jun–Dec 1979 7-Month	-0.05	-0.06	0.01	50th Wettest	Wettest since: 1978	1920
May–Dec 1979 8-Month	0.10	-0.05	0.15	84th Driest	Driest since: 1976	2018
May–Dec 1979 8-Month	0.10	-0.05	0.15	47th Wettest	Wettest since: 1978	1968
Apr–Dec 1979 9-Month	0.15	-0.03	0.18	87th Driest	Driest since: 1976	1938
Apr–Dec 1979 9-Month	0.15	-0.03	0.18	44th Wettest	Wettest since: 1978	1937
Mar–Dec 1979 10-Month	-0.14	-0.05	-0.09	63rd Driest	Driest since: 1976	1992
Mar–Dec 1979 10-Month	-0.14	-0.05	-0.09	68th Wettest	Wettest since: 1978	1920, 1937
Feb–Dec 1979 11-Month	0.14	-0.04	0.18	85th Driest	Driest since: 1978	2018
Feb–Dec 1979 11-Month	0.14	-0.04	0.18	46th Wettest	Wettest since: 1977	1983
Jan–Dec 1979 12-Month	-0.06	-0.04	-0.02	69th Driest	Driest since: 1976	1992
Jan–Dec 1979 12-Month	-0.06	-0.04	-0.02	62nd Wettest	Wettest since: 1978	1983
Jul 1978–Dec 1979 18-Month	-0.04	-0.04	0.00	74th Driest	Driest since: 1977	1992
Jul 1978–Dec 1979 18-Month	-0.04	-0.04	0.00	56th Wettest	Wettest since: 1978	1983, 1996
Jan 1978–Dec 1979 24-Month	-0.03	-0.04	0.01	71st Driest	Driest since: 1977	1930
	-0.03	-0.04	0.01	59th Wettest	Wettest since: 1978	1984
	Ties: 1915
Jan 1977–Dec 1979 36-Month	-0.02	-0.03	0.01	69th Driest	Driest since: 1978	1930
Jan 1977–Dec 1979 36-Month	-0.02	-0.03	0.01	60th Wettest	Wettest since: 1976	1997
Jan 1976–Dec 1979 48-Month	-0.22	-0.04	-0.18	47th Driest	Driest since: 1968	1926
	-0.22	-0.04	-0.18	81st Wettest	Wettest since: 1978	1998
	Ties: 1938
Jan 1975–Dec 1979 60-Month	-0.09	-0.04	-0.05	58th Driest	Driest since: 1970	1926, 1932
	-0.09	-0.04	-0.05	69th Wettest	Wettest since: 1978	1999
	Ties: 1945

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 1979 Palmer Z-Index Rankings

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