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.

Idaho, Climate Division 2

December 2004 Palmer Z-Index Rankings

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2025)	Driest/Wettest Since	Record
December 2004 1-Month	-2.06	-0.15	-1.91	23rd Driest	Driest since: 2002	1976
December 2004 1-Month	-2.06	-0.15	-1.91	108th Wettest	Wettest since: 2003	1964
Nov–Dec 2004 2-Month	-1.72	0.02	-1.74	28th Driest	Driest since: 2002	1936, 1976
Nov–Dec 2004 2-Month	-1.72	0.02	-1.74	103rd Wettest	Wettest since: 2003	1927
Oct–Dec 2004 3-Month	-1.16	-0.01	-1.15	38th Driest	Driest since: 2002	1936
Oct–Dec 2004 3-Month	-1.16	-0.01	-1.15	93rd Wettest	Wettest since: 2003	1927
Sep–Dec 2004 4-Month	-0.76	-0.01	-0.75	39th Driest	Driest since: 2003	1936
Sep–Dec 2004 4-Month	-0.76	-0.01	-0.75	92nd Wettest	Wettest since: 2001	1927
Aug–Dec 2004 5-Month	-0.14	-0.01	-0.13	72nd Driest	Driest since: 2003	1936
Aug–Dec 2004 5-Month	-0.14	-0.01	-0.13	59th Wettest	Wettest since: 1998	1927
Jul–Dec 2004 6-Month	-0.18	0.01	-0.19	71st Driest	Driest since: 2003	1936
Jul–Dec 2004 6-Month	-0.18	0.01	-0.19	60th Wettest	Wettest since: 1998	1927
Jun–Dec 2004 7-Month	-0.30	0.01	-0.31	63rd Driest	Driest since: 2003	1936
Jun–Dec 2004 7-Month	-0.30	0.01	-0.31	68th Wettest	Wettest since: 2001	1995
May–Dec 2004 8-Month	0.34	0.02	0.32	85th Driest	Driest since: 2003	1936
May–Dec 2004 8-Month	0.34	0.02	0.32	46th Wettest	Wettest since: 1998	1927
Apr–Dec 2004 9-Month	0.13	0.02	0.11	76th Driest	Driest since: 2003	1936
Apr–Dec 2004 9-Month	0.13	0.02	0.11	55th Wettest	Wettest since: 1998	1927
Mar–Dec 2004 10-Month	-0.18	0.01	-0.19	62nd Driest	Driest since: 2003	1936
	-0.18	0.01	-0.19	69th Wettest	Wettest since: 1998	1948
	Ties: 1908
Feb–Dec 2004 11-Month	-0.22	0.01	-0.23	54th Driest	Driest since: 2003	1936
Feb–Dec 2004 11-Month	-0.22	0.01	-0.23	77th Wettest	Wettest since: 1999	1927
Jan–Dec 2004 12-Month	-0.11	0.02	-0.13	63rd Driest	Driest since: 2003	1987
Jan–Dec 2004 12-Month	-0.11	0.02	-0.13	68th Wettest	Wettest since: 1999	1927
Jul 2003–Dec 2004 18-Month	-0.52	0.02	-0.54	30th Driest	Driest since: 2003	1936
	-0.52	0.02	-0.54	100th Wettest	Wettest since: 2002	1927
	Ties: 2002
Jan 2003–Dec 2004 24-Month	-0.19	0.02	-0.21	55th Driest	Driest since: 2003	1936
	-0.19	0.02	-0.21	75th Wettest	Wettest since: 2000	1996
	Ties: 1924
Jan 2002–Dec 2004 36-Month	-0.32	0.02	-0.34	35th Driest	Driest since: 2003	1936
Jan 2002–Dec 2004 36-Month	-0.32	0.02	-0.34	94th Wettest	Wettest since: 2001	1997
Jan 2001–Dec 2004 48-Month	-0.38	0.02	-0.40	23rd Driest	Driest since: 2003	1937
	-0.38	0.02	-0.40	105th Wettest	Wettest since: 2002	1998
	Ties: 1940, 2002
Jan 2000–Dec 2004 60-Month	-0.38	0.02	-0.40	22nd Driest	Driest since: 1992	1938
	-0.38	0.02	-0.40	105th Wettest	Wettest since: 2003	1999
	Ties: 1988

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings

Climate at a Glance Divisional Rankings

Divisional Rankings

Idaho, Climate Division 2

December 2004 Palmer Z-Index Rankings

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