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 1937 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 1937 1-Month	0.72	-0.20	0.92	90th Driest	Driest since: 1935	2013
December 1937 1-Month	0.72	-0.20	0.92	41st Wettest	Wettest since: 1936	2015
Nov–Dec 1937 2-Month	1.96	-0.04	2.00	120th Driest	Driest since: 1936	2013
Nov–Dec 1937 2-Month	1.96	-0.04	2.00	11th Wettest	Wettest since: 1902	1973
Oct–Dec 1937 3-Month	1.16	-0.11	1.27	116th Driest	Driest since: 1936	2013
Oct–Dec 1937 3-Month	1.16	-0.11	1.27	15th Wettest	Wettest since: 1934	2016
Sep–Dec 1937 4-Month	0.81	-0.05	0.86	114th Driest	Driest since: 1936	1976
Sep–Dec 1937 4-Month	0.81	-0.05	0.86	17th Wettest	Wettest since: 1924	1973
Aug–Dec 1937 5-Month	0.82	-0.07	0.89	115th Driest	Driest since: 1936	1936
Aug–Dec 1937 5-Month	0.82	-0.07	0.89	16th Wettest	Wettest since: 1924	1968
Jul–Dec 1937 6-Month	0.62	-0.07	0.69	112th Driest	Driest since: 1936	2018
Jul–Dec 1937 6-Month	0.62	-0.07	0.69	19th Wettest	Wettest since: 1920	1920
Jun–Dec 1937 7-Month	1.27	-0.06	1.33	126th Driest	Driest since: 1936	2018
Jun–Dec 1937 7-Month	1.27	-0.06	1.33	5th Wettest	Wettest since: 1920	1920
May–Dec 1937 8-Month	1.11	-0.05	1.16	125th Driest	Driest since: 1936	2018
May–Dec 1937 8-Month	1.11	-0.05	1.16	6th Wettest	Wettest since: 1920	1968
Apr–Dec 1937 9-Month	1.62	-0.03	1.65	130th Driest	Driest since: 1936	1938
Apr–Dec 1937 9-Month	1.62	-0.03	1.65	1st Wettest	Wettest to Date	1937
Mar–Dec 1937 10-Month	1.36	-0.05	1.41	130th Driest	Driest since: 1936	1992
	1.36	-0.05	1.41	1st Wettest	Wettest since: 1920	1920, 1937
	Ties: 1920
Feb–Dec 1937 11-Month	1.45	-0.04	1.49	129th Driest	Driest since: 1936	2018
Feb–Dec 1937 11-Month	1.45	-0.04	1.49	2nd Wettest	Wettest to Date	1983
Jan–Dec 1937 12-Month	1.29	-0.04	1.33	128th Driest	Driest since: 1936	1992
Jan–Dec 1937 12-Month	1.29	-0.04	1.33	3rd Wettest	Wettest to Date	1983
Jul 1936–Dec 1937 18-Month	0.51	-0.04	0.55	114th Driest	Driest since: 1936	1992
Jul 1936–Dec 1937 18-Month	0.51	-0.04	0.55	16th Wettest	Wettest since: 1921	1983, 1996
Jan 1936–Dec 1937 24-Month	0.41	-0.04	0.45	113th Driest	Driest since: 1936	1930
Jan 1936–Dec 1937 24-Month	0.41	-0.04	0.45	17th Wettest	Wettest since: 1920	1984
Jan 1935–Dec 1937 36-Month	-0.11	-0.03	-0.08	58th Driest	Driest since: 1936	1930
Jan 1935–Dec 1937 36-Month	-0.11	-0.03	-0.08	71st Wettest	Wettest since: 1933	1997
Jan 1934–Dec 1937 48-Month	-0.29	-0.04	-0.25	40th Driest	Driest since: 1936	1926
Jan 1934–Dec 1937 48-Month	-0.29	-0.04	-0.25	88th Wettest	Wettest since: 1934	1998
Jan 1933–Dec 1937 60-Month	-0.12	-0.04	-0.08	55th Driest	Driest since: 1936	1926, 1932
Jan 1933–Dec 1937 60-Month	-0.12	-0.04	-0.08	72nd Wettest	Wettest since: 1923	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on April 1, 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 1937 Palmer Z-Index Rankings

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