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 2007 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 2007 1-Month	0.88	-0.20	1.08	92nd Driest	Driest since: 2006	2013
December 2007 1-Month	0.88	-0.20	1.08	39th Wettest	Wettest since: 2005	2015
Nov–Dec 2007 2-Month	-0.36	-0.04	-0.32	50th Driest	Driest since: 2004	2013
	-0.36	-0.04	-0.32	81st Wettest	Wettest since: 2006	1973
	Ties: 1933
Oct–Dec 2007 3-Month	0.00	-0.11	0.11	76th Driest	Driest since: 2004	2013
	0.00	-0.11	0.11	55th Wettest	Wettest since: 2006	2016
	Ties: 2003
Sep–Dec 2007 4-Month	-0.18	-0.05	-0.13	61st Driest	Driest since: 2004	1976
Sep–Dec 2007 4-Month	-0.18	-0.05	-0.13	70th Wettest	Wettest since: 2006	1973
Aug–Dec 2007 5-Month	-0.22	-0.07	-0.15	64th Driest	Driest since: 2003	1936
Aug–Dec 2007 5-Month	-0.22	-0.07	-0.15	67th Wettest	Wettest since: 2006	1968
Jul–Dec 2007 6-Month	-0.15	-0.07	-0.08	71st Driest	Driest since: 2006	2018
Jul–Dec 2007 6-Month	-0.15	-0.07	-0.08	60th Wettest	Wettest since: 2005	1920
Jun–Dec 2007 7-Month	-0.25	-0.06	-0.19	59th Driest	Driest since: 2004	2018
Jun–Dec 2007 7-Month	-0.25	-0.06	-0.19	72nd Wettest	Wettest since: 2006	1920
May–Dec 2007 8-Month	-0.44	-0.05	-0.39	43rd Driest	Driest since: 2003	2018
	-0.44	-0.05	-0.39	88th Wettest	Wettest since: 2006	1968
	Ties: 1919
Apr–Dec 2007 9-Month	-0.47	-0.03	-0.44	36th Driest	Driest since: 2003	1938
	-0.47	-0.03	-0.44	95th Wettest	Wettest since: 2006	1937
	Ties: 1922
Mar–Dec 2007 10-Month	-0.62	-0.05	-0.57	33rd Driest	Driest since: 2004	1992
Mar–Dec 2007 10-Month	-0.62	-0.05	-0.57	98th Wettest	Wettest since: 2006	1920, 1937
Feb–Dec 2007 11-Month	-0.43	-0.04	-0.39	42nd Driest	Driest since: 2004	2018
Feb–Dec 2007 11-Month	-0.43	-0.04	-0.39	89th Wettest	Wettest since: 2006	1983
Jan–Dec 2007 12-Month	-0.54	-0.04	-0.50	38th Driest	Driest since: 2004	1992
Jan–Dec 2007 12-Month	-0.54	-0.04	-0.50	93rd Wettest	Wettest since: 2006	1983
Jul 2006–Dec 2007 18-Month	-0.42	-0.04	-0.38	38th Driest	Driest since: 2004	1992
	-0.42	-0.04	-0.38	92nd Wettest	Wettest since: 2006	1983, 1996
	Ties: 1985
Jan 2006–Dec 2007 24-Month	-0.32	-0.04	-0.28	41st Driest	Driest since: 2004	1930
	-0.32	-0.04	-0.28	89th Wettest	Wettest since: 2006	1984
	Ties: 1990
Jan 2005–Dec 2007 36-Month	-0.22	-0.03	-0.19	47th Driest	Driest since: 2006	1930
	-0.22	-0.03	-0.19	82nd Wettest	Wettest since: 2006	1997
	Ties: 1934, 2006
Jan 2004–Dec 2007 48-Month	-0.30	-0.04	-0.26	37th Driest	Driest since: 2006	1926
Jan 2004–Dec 2007 48-Month	-0.30	-0.04	-0.26	91st Wettest	Wettest since: 2001	1998
Jan 2003–Dec 2007 60-Month	-0.36	-0.04	-0.32	30th Driest	Driest since: 2006	1926, 1932
	-0.36	-0.04	-0.32	97th Wettest	Wettest since: 2002	1999
	Ties: 1939

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 26, 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 2007 Palmer Z-Index Rankings

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